Light-driven chemistry for a sustainable future
Discussion meeting organised by Professor Anatoly Zayats, Professor Stefan Maier, Sir Richard Catlow FRS, Professor Graham Hutchings CBE FRS.
Increasing demands on clean energy and a sustainable environment require a paradigm shift in catalysis and chemical industries to reduce energy consumption and the use of rare materials. Photonics offers new emerging solutions to control chemical processes with light. This meeting will bring together researchers across the disciplines of chemistry and optical physics to chart emerging routes for light-driven catalysis.
Poster session
There will be a poster session from 5pm on Monday 1 June 2026. If you would like to present a poster, please , abstract (up to 200 words), author list, and the name of the proposed presenter and institution no later than Friday 1 May 2026. Acceptances may be made on a rolling basis so we recommend submitting as soon as possible in case the session becomes full. Submissions made within one month of the meeting may not be included in the programme booklet.
Attending the event
This event is intended for researchers in relevant fields.
- Free to attend
- Both virtual and in-person attendance is available.
- Lunch is available on both days of the meeting for an optional £25 per day. There are plenty of places to eat nearby if you would prefer to purchase food offsite. Participants are welcome to bring their own lunch to the meeting
Please note that scientific meetings hosted by the Royal Society do not necessarily represent a Royal Society position or signify an endorsement of the speakers or content presented.
Enquiries: Scientific Programmes team.
Organisers
Schedule
Chair
Dr Aliaksandra Rakovich
King’s College London, UK
Dr Aliaksandra Rakovich
King’s College London, UK
| 09:00-09:05 |
Welcome by the Royal Society and lead organiser
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| 09:05-09:30 |
New chemistry with cavity quantum electrodynamics
Recent demonstrations of strong coupling cavity QED with molecular vibrations in infrared resonators have opened exciting opportunities for exploring novel chemical reactivities that benefit from quantum correlations with the electromagnetic vacuum at room temperature [1]. In this talk, I describe the first open quantum system model that links the modification of intracavity chemical reactivity of molecular ensembles in strong coupling with non-canonical thermalisation due to vacuum field fluctuations [2]. We also discuss new types of single-molecule chemistry in the fully-quantum regime of light and matter to explore in next-generation nanoreactors [3-5]. The quantum mechanical nature of single-molecule dissociation in infrared nanocavities under strong and ultra-strong coupling is emphasised, showing that the combined influence of Bloch-Siegert shifts, wavepacket spreading, nuclear anharmonicity and vacuum field polarisation via permanent dipoles, significantly increases the molecular dissociation rate relative to free space [6], for experimentally relevant scenarios [7,8]. Our work provides key conceptual and numerical tools for understanding the new possibilities that cavity QED physics can bring to chemical science. Professor Felipe Herrera
Professor Felipe HerreraProfessor Felipe Herrera received his PhD in 2012 from the University of British Columbia for research on quantum control with cold molecules. As a postdoctoral researcher at Harvard University he worked on strong light-matter coupling with organic molecules in optical microcavities. In 2014 he became faculty in the Department of Physics at Universidad de Santiago de Chile, where he currently holds an Associate Professor position. In 2016, Professor Herrera developed the first theory of electron transfer chemical reactions in optical cavities and continues to develop physical theories for condensed-phase chemical reactions in optical and infrared cavities. Since 2017, he has made pioneering contributions on quantum light generation with metal-organic frameworks for applied optics. For his research contributions, Professor Herrera has received numerous honors, including the Royal Society Wolfson Visiting Fellowship. |
| 09:30-09:45 |
Discussion
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| 09:45-10:15 |
Shaping chemical reactivity with the quantum vacuum
Polaritonic chemistry — the control of chemical reactivity through strong collective light-matter coupling in optical cavities — has produced striking experimental results, including site- and bond-selective reactivity, whose theoretical origin remains unresolved. The core challenge is a first-principles framework that captures the full correlated electron-photon problem without phenomenological assumptions. Quantum electrodynamical density functional theory (QEDFT), grounded in the Pauli-Fierz Hamiltonian and extending time-dependent DFT to quantized cavity fields, meets this challenge: it provides a stable, computationally tractable ab initio foundation for cavity-modified ground states, chemical reactivity, and quantum phase transitions — including the striking "dark" regime in which vacuum fluctuations alone, without any photon excitation, drive spontaneous symmetry breaking and emergent phases of matter. We present two results that sharpen this picture considerably. First, genuine ground-state quantum phase transitions induced purely by quantum vacuum fluctuations establish cavity coupling as a fundamentally new axis for quantum materials design — the program we term cavity materials engineering. Second, and more unexpectedly, the dressed electronic structure under collective vibrational strong coupling maps exactly onto the Sherrington-Kirkpatrick spin glass model: frustration, disorder, and stochastic resonance emerge naturally from the cavity-matter Hamiltonian, providing a sharp microscopic mechanism for collectively induced local chemical transformations and extending spin glass physics into an entirely new domain. Together, these advances deliver a predictive, mechanism-based theory of polaritonic chemistry and open a rigorous path toward designing quantum materials and controlling chemical reactivity through the quantum vacuum.
Professor Angel RubioMax Plank Institute for Structure and Dynamics of Matter, Germany
Professor Angel RubioMax Plank Institute for Structure and Dynamics of Matter, Germany Angel Rubio, born on 27 September 1965 in Oviedo, Spain, is the Director of the Theory Department of the Max Planck Institute for the Structure and Dynamics of Matter. He is also Distinguished Research Scientist at the Simons Foundation Flatiron Institute (NY, USA) and Professor/Chair for condensed matter physics at the University of the Basque Country in Donostia-San Sebastián, Spain. He received his PhD in Physics in 1991 from the University of Valladolid. He worked as post-doctoral researcher at University of California at Berkeley (1992-94). He is External Scientific Member of the Fritz Haber Institute in Berlin and Full Professor at the University of Hamburg (2016). He is acknowledged as a pioneer and leader in the area of computational materials physics, one of the founders of modern 'theoretical spectroscopy', and the originator of the widely used ab initio open-source project Octopus. Recently his research has focussed on the prediction and characterisation of new non-equilibrium states of matter. His work has been recognised by several awards, including the 2018 Max Born medal and prize, 2016 Medal of the Spanish Royal Physical Society, the 2014 Premio Rey Jaime I for basic research, the 2006 DuPont Prize in nanotechnology, the 2005 Friedrich Wilhelm Bessel Research Award of the Humboldt Foundation, and two European Research Council advanced grants (2011 and 2016). Rubio is Fellow of the American Physical Society and the American Association for the Advancement of Science, member of the Academia Europaea, and a foreign associate member of the National Academy of Sciences. |
| 10:15-10:30 |
Discussion
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| 10:30-11:00 |
Break
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| 11:00-11:30 |
Antenna-Reactors for Plasmonic Photocatalysis
Metallic nanoparticles, used since antiquity to impart vibrant color into materials, known in the 19th century as “Faraday’s colloid” and in the 21st as the thin red line of COVID antigen tests, are a central tool in the nanoscale manipulation of light. When excited by light, metallic nanoparticles undergo a coherent oscillation of their conduction electrons- known as a plasmon- responsible for their strong light-matter interactions, as “optical antennas”. Light excitation gives rise to the generation of nonequilibrium, “hot” electrons that can drive chemical reactions on the nanoparticle surface. By coupling these optical antennas with ultrasmall catalyst particles on their surfaces, one can transform traditionally thermocatalytic chemical reactions into photodriven reactions that proceed under surprisingly mild, low temperature, and ambient pressure, conditions. This new type of light-based catalyst can be utilised for remediating greenhouse gases, converting them to useful molecules for industry, or into benign chemicals for a cleaner planet.
Professor Naomi HalasRice University, US
Professor Naomi HalasRice University, US Naomi J Halas is a University Professor and the Stanley C Moore Professor of Electrical and Computer Engineering at Rice University. She was the first person to introduce structural control into the synthesis of metal nanoparticles to control their optical properties. She is the author of over 400 refereed publications, has more than 30 issued patents, and has presented more than 650 invited talks. She co-founded Syzygy Plasmonics, a company currently deploying light-based chemical reactors based on photocatalyst particles originally invented in her laboratory. She is a member of the US National Academy of Sciences, the National Academy of Engineering, the American Academy of Arts and Sciences, the Royal Danish Academy of Sciences and Letters, and the Royal Society of Chemistry (UK). |
| 11:30-11:45 |
Discussion
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| 11:45-12:15 |
Alchemical glazing of single atomic metallic layers for enhanced plasmonic catalysis
Plasmonic nanocavities offer exceptional confinement of light, making them promising for photocatalytic applications. However, optimal plasmonic metals are often unsuitable catalysts. Here we integrate ultrathin Pd ant Pt metal films from sub- to few- atomic monolayers inside plasmonic nanocavities using underpotential deposition. Despite their bulk metals having poor plasmonic properties in the visible region, minimal loss in optical field enhancement is delivered along with chemical enhancement. Such synergistic effects significantly enhance photocatalytic activity of the plasmonic nanocavities as well as photostability by suppressing surface atom migration. We also show how this enables real-time observation of electrocatalytic reactions down to the single molecule scale, improving understanding of real-world in-situ processes. This atomic alchemical-glazing approach is general for a range of catalytic metals that bridge plasmonic and chemical catalysis, yielding broad applications in photocatalysis for optimal chemical transformation.
Professor Jeremy Baumberg FRSUniversity of Cambridge, UK
Professor Jeremy Baumberg FRSUniversity of Cambridge, UK Professor Jeremy J Baumberg FRS is the Harald Aspden Professor of Fundamental Physics at the University of Cambridge, directing a key UK NanoPhotonics Centre. He develops optical materials structured on the nanoscale, with strong experience at Hitachi, IBM, and his spin-offs combining academic insight with innovation. With over 57000 citations (h-119), he is a leading innovator in Nano, leading to awards including the IoP Faraday gold Medal (2017) and Royal Society Rumford Medal (2014). He is currently chair of the UK EPSRC Council and advisor to ARIA. His recent popular science book is “The Secret Life of Science: How Science Really Works and Why it Matters”, see np.phy.cam.ac.uk. |
| 12:15-12:30 |
Discussion
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| 13:30-14:00 |
Computer modelling of catalytic materials for light-driven CO2 conversion and hydrogen generation
Professor Nora de LeeuwUniversity of Leeds, UK
Professor Nora de LeeuwUniversity of Leeds, UK Nora de Leeuw is Professor of Computational Chemistry at the University of Leeds, where she also serves as Executive Dean of the Faculty of Engineering and Physical Sciences. With a PhD in Computational Chemistry from the University of Bath, she has held academic appointments at Cardiff University, where she was Pro-Vice Chancellor International; University College London, where she also led an EPSRC Centre for Doctoral Training; the University of Reading and Birkbeck College London, where she held an EPSRC Advanced Research Fellowship. Nora has been awarded a Royal Society Wolfson Merit Award, an AWE William Penney Fellowship, and a Royal Society Industry Fellowship. She is a Fellow of the Royal Society of Chemistry, elected Fellow of the Learned Society of Wales and elected Member of Academia Europaea. |
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| 14:00-14:15 |
Discussion
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| 14:15-14:45 |
Computational prediction of new transparent conducting oxides for band alignment matching in PEC and PV applications
Dr David ScanlonUniversity of Birmingham, UK Dr David ScanlonUniversity of Birmingham, UK David O Scanlon is a Reader in Computational, Inorganic and Materials Chemistry at University College London (UCL). He was awarded his PhD in Chemistry from Trinity College Dublin in 2011, and moved later that year to take up a Ramsay Fellowship in the Department of Chemistry at UCL. He leads a group focused on computationally driven materials design at UCL, especially within the remit of solid state materials for renewable energy applications. |
| 14:45-15:00 |
Discussion
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| 15:00-15:30 |
Break
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| 15:30-16:00 |
Theory of hot-electron chemistry
Professor Francesca BalettoUniversità degli Studi di Milano, Italy Professor Francesca BalettoUniversità degli Studi di Milano, Italy Since September 2021, Francesca Baletto (FB) has been an Associate Professor in Physics at the Physics Department "Aldo Pontremoli" at the Università degli Studi di Milano (Unimi). Before moving to Milan, FB held a Readership at the Physics Department at King's College London (KCL) between 2018 and 2021. Between 2007 and 2018, FB was a Lecturer, then promoted to Senior Lecturer at KCL. As a research assistant, FB was in the QuasiAmore group led by Professor Marzari at DMSE-MIT, and between 2003 and 2006, she was awarded a UNESCO fellowship at the ICTP. FB is a mum of two boys (career breaks in 2011 and in 2013-2014). FB is the group leader of the Psi-K Working B1 on “Multiscale and reduced scaling methods”. Between 2017 and 2021, she served as an elected member of the Royal Society of Chemistry Theoretical Chemistry Group and as an active member of the Thomas Young Centre and the MMM-HUB during her time at KCL. FB was awarded a few EPSRC, EU and Italian grants. Her main research line is the modelling of nanoparticles as (photo)catalysts. |
| 16:00-16:15 |
Discussion
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| 16:15-17:00 |
Poster flash talk session
Professor Stefan MaierImperial College London, UK
Professor Stefan MaierImperial College London, UK Stefan Maier is Head of School Physics and Astronomy at Monash University, and the Lee Lucas Chair in Experimental Physics at Imperial College London. His research covers nanophotonics, plasmonics, and metamaterials. He is the recipient of the Sackler Prize in the Physical Sciences, and a fellow of Optica, the Institute of Physics, and the Australian Institute of Physics. |
| 17:00-18:30 |
Poster session and drinks reception
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| 18:30-00:00 |
Close
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Chair
Professor Fang Xie
Imperial College London, UK
Professor Fang Xie
Imperial College London, UK
| 09:00-09:30 |
Nanophotonics for sustainable technologies and green energy
Professor Alexandra BoltassevaPurdue University, US
Professor Alexandra BoltassevaPurdue University, US Alexandra Boltasseva is a Ron and Dotty Garvin Tonjes Distinguished Professor of Electrical and Computer Engineering at Purdue University, USA. She received her PhD in electrical engineering at Technical University of Denmark, DTU in 2004. Boltasseva specializes in nanophotonics, quantum photonics, and optical materials. She is the 2023 recipient of the R.W. Wood Prize (Optica, formerly Optical Society of America), 2022 Guggenheim Fellow, 2018 Blavatnik National Award for Young Scientists Finalist and received the 2013 Institute for Electrical and Electronics Engineers (IEEE) Photonics Society Young Investigator Award, 2013 Materials Research Society (MRS) Outstanding Young Investigator Award, the 2011 MIT Technology Review Top Young Innovator (TR35), the 2009 Young Researcher Award in Advanced Optical Technologies from the University of Erlangen-Nuremberg, Germany, and the Young Elite-Researcher Award from the Danish Council for Independent Research (2008). She is a Fellow of the National Academy of Inventors (NAI), MRS, IEEE, Optica, and SPIE. |
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| 09:30-09:45 |
Discussion
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| 09:45-10:15 |
Quantum coherence-enhanced hot-electron injection and water oxidation in plasmon–nanocavity hybrid systems
We have demonstrated that photoelectrochemical water oxidation is markedly enhanced in a plasmonic photoanode operating under modal strong coupling between a Fabry–Pérot nanocavity mode and a localised surface plasmon resonance mode. The hybrid structure, consisting of a TiO2 thin film on a gold mirror with surface gold nanostructures, exhibits stronger and broader optical absorption than comparable systems without nanocavity coupling, together with significantly improved oxidation activity. Our previous studies indicate that this enhancement originates from quantum coherence among spatially distributed plasmonic nanostructures mediated by the nanocavity field. To further investigate the influence of quantum coherence on electron transfer, we introduced controlled numbers of gold nanostructures with different geometries within the optical coherence area using semiconductor nanofabrication techniques. This enabled us to examine how perturbations of the coherence network affect hot-electron injection into TiO2. We also carried out temperature-dependent kinetic studies to evaluate activation energies and frequency factors associated with charge transfer and water oxidation intermediate formation. These findings provide insight into how quantum coherence enhances reaction efficiency and promotes water oxidation, offering design principles for plasmonic photocatalysts.
Professor Hiroaki MisawaOkayama University, Japan
Professor Hiroaki MisawaOkayama University, Japan Hiroaki Misawa has been serving as a Special Appointment Professor at the Research Institute for Interdisciplinary Science, Okayama University, since January 2024. He is also an Emeritus Professor and Extraordinary Professor at the Research Institute for Electronic Science, Hokkaido University. He began his academic career as an assistant professor at the University of Tsukuba in 1985, following the completion of his PhD in Chemistry at the same university and a postdoctoral appointment at the University of Texas at Dallas. In 1995, he was appointed Professor in the Department of Engineering at the University of Tokushima. He later joined Hokkaido University in 2003 as the a Professor at Research Institute for Electronic Science. He has also served as a lifetime Chair Professor at National Yang Ming Chiao Tung University in Taiwan. He has led major national research programs, including CREST, and has served as Principal Investigator for several prestigious MEXT-funded projects, including multiple Grants-in-Aid for Scientific Research (S), as well as projects in Priority Areas and Specially Promoted Research. He received the Commendation for Science and Technology by the Minister of Education, Culture, Sports, Science and Technology, Prizes for Science and Technology (Research Category) in 2015 and CSJ Award from the Chemical Society of Japan in 2016. His current research interests include nanomaterials chemistry, nanotechnology, ultra-fast processes in materials, light-matter interaction, photochemistry, photonic crystals, and plasmonics. He has authored more than 380 research papers. He is the Editor-in-Chief of the Journal of Photochemistry and Photobiology C: Photochemistry Reviews and serves as the advisor of many research projects and academic committees. |
| 10:15-10:30 |
Discussion
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| 10:30-11:00 |
Break
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| 11:00-11:30 |
Converting methane to fuels with atomically-optimized plasmon catalysts (online)
Professor Jennifer DionneStanford University, US
Professor Jennifer DionneStanford University, US Jennifer Dionne is an associate professor of Materials Science and Engineering at Stanford, and an affiliate faculty of the Stanford Neurosciences Institute, TomKat Center for Sustainable Energy, and Bio-X. Jen received her PhD in Applied Physics at the California Institute of Technology, advised by Harry Atwater, and BS degrees in Physics and Systems & Electrical Engineering from Washington University in St. Louis. Prior to joining Stanford, she served as a postdoctoral researcher in Chemistry at Berkeley, advised by Paul Alivisatos. Jen’s research develops new nanophotonic materials and microscopies to observe chemical and biological processes as they unfold with nanometer scale resolution. She then uses these observations to help improve energy-relevant processes (such as photocatalysis and energy storage) and medical diagnostics. Her work has been recognised with a Moore Inventor Fellowship (2017), the Materials Research Society Young Investigator Award (2017), Adolph Lomb Medal (2016), and Sloan Foundation Fellowship (2015), and was featured on Oprah’s list of '50 Things that will make you say ‘Wow’!'. She currently serves as director of the DOE-funded Photonics at Thermodynamic Limits Energy Frontier Research Center and faculty co-director of Stanford’s Photonics Research Center. |
| 11:30-11:45 |
Discussion
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| 11:45-12:15 |
Solar chemistry for low temperature NOx reduction
Professor Andy BealeUniversity College London, UK Professor Andy BealeUniversity College London, UK Andrew M Beale is an EPSRC Early career Fellow and Professor of Inorganic Chemistry at UCL based at the Research Complex at Harwell, Rutherford Appleton Laboratories in Harwell, Didcot. He is also co-director of the spin-off company Finden Ltd. Current research interests fall mainly into the category of catalysis and solid-state chemistry particularly studied under dynamic or operando conditions. Specific areas of interest include the development of novel imaging techniques (‘multimodal’) for the study of single catalyst bodies/grains under real reaction conditions, determining the nature of the active site and reaction mechanism in catalysts for NOx abatement, methane activation/upgrading, unravelling the self-assembly mechanism of the microporous materials and the characterisation of catalytically active supported nanoparticles. |
| 12:15-12:30 |
Discussion
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Chair
Professor Christopher Hardacre
Queen's University Belfast, UK
Professor Christopher Hardacre
Queen's University Belfast, UK
Chris Hardacre is currently Head of the School of Chemistry and Chemical Engineering in Queen’s University, Belfast. He obtained a PhD from Cambridge University in 1994 and was an SERC research and a junior research fellow at Emmanuel College, Cambridge. He moved to Queen’s in 1995 as a lecturer in Physical Chemistry and in 2003, he was appointed as Professor of Physical Chemistry and became Director of Research of the Centre for the Theory and Application for Catalysis (CenTACat). In 2004 he was awarded a USAF, Window on Science visiting research fellowship. Through his work in ionic liquids research, he was awarded the Royal Society of Chemistry Encouraging Innovation Award with Merck Chemicals Ltd and was part of the team to win the Queen’s Anniversary Prize for Further and Higher Education. In 2008 he was awarded the US R and D 100 award for the development of spatially resolved measurements in catalytic monoliths with Alex Goguet (QUB) and colleagues from the Oak Ridge National Lab and in 2013 was the inaugural winner of the IChemE’s Andrew Medal for catalysis. He is a Co-PI for the UK Catalysis Hub and has research interests in the use of kinetic and spectroscopic techniques to determine gas phase and liquid phase heterogeneously catalysed reaction mechanisms for emission control catalysis, liquid phase hydrogenations and the conversion of biomass to fine chemicals. He published over 330 papers and 8 patents and has an H-index of 52l.
| 13:30-14:00 |
CH4 upgrading by photon-phonon co-driven catalysis
Small and inert molecules (eg CO2 and CH4) upgrading by solar energy is regarded as a pivotal approach to achieve carbon neutrality in chemical synthesis. Typically, we found that surface junctions can substantially facilitate charge transfer and separation generated by solar energy, which has been demonstrated by carbon quantum dots/C3N4 for an unprecedented CO2 conversion, leading to CO2 to methanol with a 100% selectivity [1]. More importantly, we discovered that coupling photons with phonons to co-drive catalytic reactions is significantly more efficient and selective compared to solely relying on photocatalysis, which has been demonstrated in a few scenarios, including methane conversion to formaldehyde on Ru/ZnO [2], to C2H6 over Au loaded TiO2 [3] etc, and very recently to ethanol on an intramolecular junction [4], all with extremely high conversion and selectivity. References
Professor Junwang TangTsinghua University, China
Professor Junwang TangTsinghua University, China Professor Junwang (John) Tang is a member of the Academia of Europaea, Fellow of the European Academy of Sciences, Fellow of RSC, Fellow of IMMM and Honorary Fellow of CCS. He is currently the Director of Industrial Catalysis Center and Carbon Neutrality Chair Professor of Materials Chemistry and Catalysis at Tsinghua University, China and Visiting Professor at University College London, UK. Tang has pioneered in coupling photons with phonons for small molecule activation to produce zero-carbon fuels (eg H2O to H2, N2 to NH3) and green chemicals (CO2 to alcohols and CH4 to long chain hydrocarbons) as well as microwave catalysis (e.g. chemical plastic recycling), together with the investigation of the underlying charge dynamics and kinetics by state-of-the-art spectroscopies. He is also the Editor / Associate Editor of 5 journals, including Appl Catal B, EES Solar etc. |
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| 14:00-14:15 |
Discussion
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| 14:15-14:45 |
Barriers to change in chemical manufacturing
Dr Susannah ScottUniversity of California, US
Dr Susannah ScottUniversity of California, US Susannah Scott is a Distinguished Professor in Chemical Engineering and in Chemistry & Biochemistry at the University of California, Santa Barbara. She earned her PhD in Inorganic Chemistry from Iowa State University and conducted postdoctoral research at the Institut de recherches sur la catalyse in Lyon, France. In 1994, she joined the faculty of the University of Ottawa, Canada, where she was named a Canada Research Chair. In 2003, she moved to Santa Barbara, where she currently holds the Mellichamp Chair in Sustainable Catalysis. Recently, she delivered the Ipatieff Lecture at Northwestern, the Grace Hopper Lecture at the University of Pennsylvania, the Kurt Wohl Memorial Lecture at the University of Delaware, the Boulder Scientific Lecture at the Colorado State University, the Eastman Foundation Lectures at the University of California, Berkeley, and the Irving Wender Lecture at the Pennsylvania State University. In 2022, she chaired the Gordon Research Conference on Catalysis. Her research interests focus on the design of catalysts for the conversion of conventional and unconventional carbon-based feedstocks. |
| 14:45-15:00 |
Discussion
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| 15:00-15:30 |
Break
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| 15:30-15:45 |
Visible light promotion of copper catalyst towards acceptorless dehydrogenation reactions
Harnessing light to modulate catalytic behaviour offers new opportunities to design sustainable oxidation processes at mild conditions. Copper based catalysts represent an attractive, earth abundant alternative to traditional noble metals for acceptorless dehydrogenation reactions, but their practical application is limited by surface oxidation and requirement for pre-reduction to access the active metallic phase. This work investigates how visible light illumination modulates catalytic performance and structure towards acceptorless dehydrogenation reactions to produce ketones and molecular H2 as a by-product. Visible light illumination of Cu/TiO₂ systems prepared by a colloidal deposition route induces marked enhancements in catalytic performance, with higher reaction rates and significantly shortened induction periods compared to purely thermally driven operation. These effects suggest that light accelerates the reduction of surface copper oxides and promotes the formation of active Cu⁰ sites which is supported by NAP-XPS measurements. Kinetic analysis demonstrates a substantial decrease in “apparent” activation energy under light assisted conditions allowing higher reaction rates to be achieved with lower thermal energy input while maintaining high selectivity. The results not only reveal how localised surface plasmon effects of Cu nanoparticles can be exploited to activate base metal catalysts at lower temperatures and show that tuning catalyst–light interactions can optimise selectivity and efficiency. By connecting photophysical processes with catalytic turnover, this work highlights the potential of light powered approaches to expand the chemical space accessible to earth abundant materials and reduce the carbon and energy intensity of oxidation chemistry. Dr Simon FreakleyUniversity of Bath, UK Dr Simon FreakleyUniversity of Bath, UK |
| 15:45-16:00 |
Driving Plasmon photocatalysis with Au Small Nanoparticles
Plasmonic materials, such as Au, Ag, and Cu, exhibit unique optical properties resulting from the collective oscillation of conduction electrons under light excitation, a phenomenon known as localized surface plasmon resonance (LSPR). This effect leads to a strong light absorption, enhanced electromagnetic fields, and efficient light-matter interactions at the nanoscale. Owing to these characteristics, plasmonic materials have been widely investigated for applications in sensing, photothermal therapy, solar energy harvesting, and photocatalysis. Among these applications, plasmon-assisted photocatalysis has emerged as a promising strategy for improving the efficiency of light-driven chemical reactions, overcoming the limitations of conventional semiconductor photocatalysts. The photocatalytic performance of plasmonic systems is strongly influenced by nanoparticle size. Variations in size affect plasmon resonance, light absorption, and charge carrier generation pathways with larger nanoparticle > 10 nm exhibiting a strong plasmonic response signal. Here, we demonstrate that ultrasmall plasmonic nanoparticles with sizes in the 3-5 nm range can effectively promote plasmon-mediated photocatalytic processes, highlighting the critical role of nanoscale size control in optimising photocatalytic performance.
Dr Ouardia AkdimCardiff University, UK
Dr Ouardia AkdimCardiff University, UK Dr Ouardia Akdim completed her PhD at IRCELyon-CNRS France, in heterogeneous catalysis and process engineering, she then spent six years as a postdoctoral researcher across multiple institutions, including the European Institute of Membranes in Montpellier, France and the Cardiff Catalysis Institute (CCI). From 2016, she spent seven years in industry, where she worked on surface disinfection technologies and electrochemical processes while maintaining an affiliation with the CCI, where she served as a consultant, enabling her to bridge fundamental research with industrial applications. In 2023, she was appointed by Pr Graham Hutchings to build and lead the photocatalysis and electrocatalysis research teams. |
| 16:00-16:15 |
Discussion
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| 16:15-17:00 |
Panel discussion: Overview and future directions
Professor Anatoly ZayatsKing's College London, UK
Professor Anatoly ZayatsKing's College London, UK Professor Anatoly V Zayats is the head of the Photonics & Nanotechnology at the Department of Physics, King’s College London, where he also leads Nano-optics and Near-field Spectroscopy Laboratory. He is a Co-Director of the London Centre for Nanotechnology and the London Institute of Advanced Light Technologies. His current research interests are in the areas of nanophotonics, plasmonics, metamaterials, plasmocatalysis, nonlinear and ultrafast optics and spectroscopy, photonic spin-orbit interactions, and optical properties of surfaces, thin films, semiconductors and low-dimensional structures. He is a founding Editor-in-Chief of Advanced Photonics journal. He is a Fellow of the Institute of Physics, the Optical Society of America, SPIE, the Royal Society of Chemistry and elected Member of Academia Europaea. |
| 17:00-17:00 |
Close
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