isomorphous substitution

March 12, 2018 - Congratulations Yuchan Dong, Kulbir Ghuman, and Co-Authors on your Advanced Science Paper Entitled Tailoring Surface Frustrated Lewis Pairs of In2O3-x(OH)y for Gas-Phase Heterogeneous CO2 Hydrogenation by Isomorphous Substitution of In3+ with Bi3+.The excited state acidity and basicity of the surface frustrated Lewis pair, in oxygen vacancy and hydroxide defect-laden BizIn2-zO3-xOHy, can be chemically tailored, by controlling the level of isomorphous substitution of Bi(III) for In(III) in the Bixbyite crystal lattice. This makes it possible to optimize the catalytic performance of the solar powered reverse water gas shift reaction, CO2 + H2 → CO + H2O.

January 6, 2018 - Well done Ab and co-authors Kulbir K. Ghuman, Paul G. O’Brien, Mohamad Hmadeh and Amit Sandhel on your solar fuels paper published in Advanced Energy Materials, January 2018. In this work you demonstrate a highly efficient ambient temperature ‘Solar Sabatier’ process whereby CO2 hydrogenation to form CH4 is efficiently catalyzed, by nanostructured RuO2 on a silicon photonic crystal support, at the remarkably high rate of 4.4 mmol gcat-1h-1. The origin of the exceptional rate of this Solar Sabatier reaction stems from a combination of the large surface area coupled with the unique light-trapping, broadband optical absorption and photothermal properties of the silicon photonic crystal support that enhances the conversion rate of the solar powered RuO2 catalysed Sabatier reaction, CO2 + 4H2 → CH4 + 2H2O.


December 27, 2017 - The U of T Solar Fuels Team has been selected as one of 20 semi-finalists from 160 applicant’s world wide, in the Ontario Center of Excellence Solutions 2030 Challenge Phase 1 competition, to find technological solutions to the greenhouse gas emissions problem in Ontario. The strategy proposed by the solar fuels team focuses on the development of light-powered processes for the conversion of CO2 to synthetic fuels, via gas-phase heterogeneous hydrogenation photocatalysis. This goal of the project is to transition a laboratory CO2-to-fuels prototype to a scaled-up CO2-to-fuels demonstration unit. Eight winning teams from Phase 1 will receive up to $250,000 in Phase 2 with 10 months to reduce their proposed solution to practice. The winning team in Phase 2 will be eligible for up to $3,000,000 Phase 3 funding to bring their transformative technology to market. The mandate of the Solutions 2030 Challenge is for winning teams and industry to collaborate and envision a path forward to tackle climate change in Ontario and around the world.

October 30, 2017 - Opalux and De La Rue Announce Partnership. Background: Andre Arsenault, Herman Miguez, Ian Manners and Geoffrey Ozin co-invented photonic color technology, in the Chemistry Department, University of Toronto. In 2006. Together they co-founded Opalux in order to develop the technology for a range of new and exciting applications.

October 27, 2017 - Tailoring CO2 Reduction with Doped Silicon Nanocrystals: Congratulations Annabelle, Wei and Chenxi as well as Ab, Yuchan and Ziqi on your Advanced Sustainable Systems paper entitled Tailoring CO2 Reduction with Doped Silicon Nanocrystals! The article can be read on the Advanced Sustainable Systems website.

Septsember 6, 2017 - One-Pot Solar Fuels: In the inaugural issue of Joule, Geoff provided a commentary on Prof. Steinfeld’s work on CO2 reduction. Their current photo-thermal reactor design implementing a CeO2 catalyst is described with insight into the chemistry of how the originally multistep process has been reduced into a single step process. The full article can be read on the Joule website.

August 15, 2017 - 50 Years of Materials Research and Still Searching: In celebration of Geoff’s 74th birthday, a vignette of his past 50 years of scientific contributions is featured here.

June 16, 2017 - Concordia’s Science Odyssey was kick-started with a lecture from Geoff entitled “Jar of Fears: Do We Want to Fight CO2 or Embrace It?” The video can be watched here.

May 15, 2017 - Congratulations Hong Wang on his VIP Angewandte Chemie Paper! The conceptual advance described in this paper is a novel strategy for the manufacture of metal-free, hierarchically structured, nitrogen-doped, nanoporous carbon-carbon nanotube composite membranes that can be utilized as a gas diffusion electrode for the large scale electrochemical reduction of CO2-to-formate.

May 11, 2017 - On May 9th and 10th, U of T’s Solar Fuels Cluster hosted the international “CO2 Solutions to Climate Change” Symposium, bringing together the world’s top scientists and engineers, all of whom are developing creative solutions to transform CO2 into useful chemicals, materials, and fuels. A variety of cutting-edge chemical, biological, computational, and materials-based strategies were presented. Science and engineering researchers, engineers and policy makers from the United States, China, Japan, the UK, and Germany laid out the full spectrum of scientific, economic and political challenges that must addressed to successfully shift towards the CO2 energy economy.

March 26, 2017 - Chinese students from Ozin group, Chenxi Qian and Wei Sun were awarded highest honor by the Chinese government at the Chinese Consulate General Toronto. Geoff praised his students and gave a speech about his views on Chinese students.

February 29, 2017 - Slow photons back in the fast lane break new ground for all solar related applications in the future. This review article, published in Advanced Materials, provides a comprehensive overview of pioneering research, present day activities and future directions aimed at enhancing the harvesting of sunlight by exploiting the unique properties of slow photons in photonic crystal materials.

January 17, 2017 - Geoff is featured in Advanced Science News as the top cited author in the new journal Advanced Science.


October 28, 2016 - Photo-desalination: There is more than One Way of Winning the Battle against Climate Change. Congratulations to Miaomiao and Jia on their AEM paper! In this paper we demonstrated that the high solar thermal conversion efficiency, low cost, low-toxicity, and good chemical stability make black TiOx (x < 2) nanoparticles a potentially useful material for converting solar energy to the thermal energy for evaporation of seawater or brackish water in remote and rural areas where access to a centralized drinking water supply is unavailable.

photocatalytic properties of all four polymorphs of nanostructured iron oxyhydroxides

October 26, 2016 - Congratulations to Ab, Mo and Paul on the publication of their latest paper in ChemNanoCat entitled “photocatalytic properties of all four polymorphs of nanostructured iron oxyhydroxides”.

October 7, 2016 - Laura has been featured by ACCN for her work promoting green chemistry at UofT. Reyes was one of 12 students who formed the Green Chemistry Initiative (GCI) in 2012, and has also oriented her PhD studies towards green chemistry, investigating the surface interactions of carbon dioxide and hydrogen on metal oxide nanomaterials for applications in photocatalytic CO2 reduction.

Edith M. Flanigen Honeywell UOP Invitational Lecture

October 4, 2016 - Join the war on Climate Change: "TRANSFORMATIVE RESEARCH TO COMBAT CLIMATE CHANGE CHALLENGE WORKSHOP" scheduled on 12th October, 2016, with opening remarks by Glen Murray, Minister of the Environment and Climate Change.

September 16, 2016 - Geoff is awarded the opportunity to deliver the Fifth Annual Edith M. Flanigen Honeywell UOP Invitational Lecture in Materials Science Series, honoring his years of dedication and contributions to the field of chemistry. Previous winners are Galen D. Stucky, Mark E. Davis, Lynne McCusker and Avelino Corma.

Top Highly Cited in 2016

July 25, 2016 - Geoff brings up the growing CO2 problem facing us in his latest opinion piece on MaterialsViews. A breakdown of the possible short, medium, and long term solutions is presented here. The full article can be read on the Materials Views website.

July 25, 2016 - Advanced Science has received its first impact factor: 6.00. A bit of history: the front cover of the first issue back in 2014 came from our group. Coincidentally 31 years ago when Advanced Materials launched its first changable graphic-based front cover, the cover story was from our group, too. Our group cover gallery can be accessed here.

July 25, 2016 - Kulbir's perspective article titled "Surface Analogs of Molecular Frustrated Lewis Pairs in Heterogeneous CO2 Hydrogenation Catalysis" accepted by ACS Catalysis. Congratulations, Kulbir! The article discusses whether or not thinking about surface acidity and basicity in terms of FLPs is something new or something old, something useful and serves a practical purpose or something uninformative and unhelpful.

July 14, 2016 - Geoff Ozin is listed in the "2016 List of Most Cited Researchers in Materials Science and Engineering by Elsevier Scopus Data". The full list can be found on the MSES website.

Jia Jia

July 13, 2016 - Geoff Ozin describes the grouwing CO2 problem from the perspective of the chemical industry in his new Materials Views editorial CO2 Conundrum .

July 06, 2016 - Jia Jia and Paul G. O'Brien's work on the reverse water gas shift (RWGS) reaction driven by Nb2O5 nanorod-supported Pd nanocrystals was published in Advanced Science. This work represents a significant enhancement in our understanding of the underlying mechanism of photothermally driven CO2 reduction and will help guide the way toward the development of highly efficient catalysts that exploit the full solar spectrum to convert gas-phase CO2 to valuable chemicals and fuels. The full article can be found on the Adv. Sci. website.

June 16, 2016 - In a review authored by Wei Sun, Chenxi Qian, and Kenneth Chen of our Silicon team, recent studies in the literature on size dependent properties of mono-disperse Silicon nanocrystals is summarized. The full article can be found on the ChemNanoMat website.

June 15, 2016 - Laura’s investigation on the effect catalyst precursors play in the photocatalytic activity of In2O3 is described in her recent Chemistry of Materials paper. It was observed that the active form, a defected In2O3-x(OH)y is formed upon thermal decomposition of In(OH)3, whereas In(NO3)3 decomposition results in a more stoichiometric but less active In2O3. This study further sheds light on the importance of surface defects in heterogeneous photocatalysis. The full article can be found on the Chemistry of Materials website.

June 6, 2016 - Our paper titled "Kinetics versus Charge Separation: Improving the Activity of Stoichiometric and Non-Stoichiometric Hematite Photoanodes Using a Molecular Iridium Water Oxidation Catalyst" was published in J. Phys. Chem. C. Congratulations to Jon Moir! The full article can be found on the ACS website with a subscription.

May 23, 2016 - An innovative strategy is described for synthesizing a new class of porous near infrared photoluminescent organic-inorganic hybrid materials by chemically incorporating hydrogen-terminated silicon nanocrystals into porous polyhedral oligomeric silsesquioxanes (POSS) frameworks while maintaining the integrity of both the POSS cages and silicon nanocrystals intact, an advance that bodes well for applications in the fields of advanced materials, gas adsorption media, and biomedicine. Congratulations to Dongzhi Chen! The full article can be found on the Wiley website with a subscription.

May 12, 2016 - Study on In2O3-x(OH)y Nanocrystal Superstructures for Photocatalysis of CO2 Reduction Published in ACS Nano. Congratulations to Le He! The full article can be found on ACS website with a subscription.

April 25, 2016 - The latest issue of C&EN features our group's work with frustrated lewis pairs on the surface of In2O3 and how it enhances activity for the reverse water-gas shift reaction. The full article can be found on C&EN's website with a subscription.

April 8, 2016 - In a new Material Views editorial titled "Titania mania - peering into the heart of photocatalysis", Geoff wrotes about a study using 4D ultra-fast electron diffraction to observe how the structure of a photocatalysis changes in the excited state and the implication this technique can have in the field of photocatalysis. The full article can be found here.

March 30, 2016 - The research of the Solar Fuels Cluster on fixing CO2 as chemicals and fuels is a feature article in the March 2016 issue of the UofT Magazine. The full article can be found here. The March issue of UofTMagazine can be found on the UofTMagazine website.

February 10, 2016 - Geoff Ozin discusses strategies for "fixing" CO2 in a Materials Views editorial.

February 1, 2016 - In a new C&EN Perspective, Geoff Ozin reflects on on the birth and growth of nanochemistry.


December 15, 2015 - Geoff Ozin discusses the UofT Solar Fuels Cluster in a special editorial for Materials Views.

November 26, 2015 - The University of Toronto Solar Fuels Cluster has been highlighted in a feature article by UofT News.

May 5, 2015 - Geoff Ozin was awarded the 2015 Royal Society of Chemistry Centenary Prize for his work in defining, enabling and popularising a chemical approach to nanomaterials for innovative nanotechnology in advanced materials and biomedical science. Geoff delivered Centenary Lectures at Cambridge University and Imperial College London University on 'Solar Powered CO2 to Fuel'.

Solar Fuels From The Sun

Not Fossil Fuels From The Earth