20 results found
Godin R, Ma X, Gonzalez-Carrero S, et al., 2018, Tuning Charge Carrier Dynamics and Surface Passivation in Organolead Halide Perovskites with Capping Ligands and Metal Oxide Interfaces, ADVANCED OPTICAL MATERIALS, Vol: 6, ISSN: 2195-1071
Godin R, Kafizas A, Durrant JR, 2017, Electron transfer dynamics in fuel producing photosystems, Current Opinion in Electrochemistry, Vol: 2, Pages: 136-143, ISSN: 2451-9103
An often overlooked aspect of solar fuel production is the inherent mismatch between bulk charge carrier lifetimes and rates of charge transfer reactions. Considering water oxidation, interfacial charge transfer occurs on the millisecond to second timescales while bulk charge carrier lifetimes of metal oxides are typically in the fast picosecond–nanosecond regime. For charge transfer to efficiently compete with charge recombination, strategies that substantially increase the charge carrier lifetime need to be applied. In this chapter, we discuss the magnitude of the kinetic mismatch, overview common effective charge separation strategies that address this mismatch and highlight recent developments in our understanding of these processes. We also touch upon recent advances in determining the chemical nature of key reaction intermediates.
Godin R, Wang Y, Zwijnenburg MA, et al., 2017, Time-Resolved Spectroscopic Investigation of Charge Trapping in Carbon Nitrides Photocatalysts for Hydrogen Generation, JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, Vol: 139, Pages: 5216-5224, ISSN: 0002-7863
Hariri AA, Hamblin GD, Hardwick JS, et al., 2017, Stoichiometry and Dispersity of DNA Nanostructures Using Photobleaching Pair-Correlation Analysis, BIOCONJUGATE CHEMISTRY, Vol: 28, Pages: 2340-2349, ISSN: 1043-1802
Kafizas A, Godin R, Durrant JR, 2017, Charge Carrier Dynamics in Metal Oxide Photoelectrodes for Water Oxidation, Semiconductors and Semimetals, Pages: 3-46
© 2017 Elsevier Inc. Since the first demonstration by Fujishima and Honda of photoelectrochemical water splitting, this route to renewable hydrogen fuel has been pursued with great endeavor. The oxidation of water has been identified as the kinetic “bottleneck” limiting the overall reaction efficiency, thus there is a pressing need to develop more active photocatalysts that can drive this reaction. Some of the most promising materials that can oxidize water are metal oxide semiconductors. The most popular metal oxide photoanodes for water oxidation are TiO 2 , α-Fe 2 O 3 , BiVO 4 and WO 3 , but even state-of-the-art examples show photocatalytic currents far shy of their theoretical maximum. Numerous strategies have been developed to improve their activity, which include nanostructuring, the use of surface cocatalysts, pacifying surface states, and forming heterojunction architectures. This review focuses on the use of TiO 2 , α-Fe 2 O 3 , BiVO 4 and WO 3 as photoanodes for water oxidation and studies that probe charge carrier dynamics. Emphasis is placed on evaluation of electrodes under operating conditions. During this review, we will discuss each metal oxide in turn and use these studies of charge carrier dynamics to build an inclusive and complimentary picture of the processes that occur during water oxidation. There will be a general view on how changes in material structure impact charge carrier dynamics and the kinetics of water oxidation.
Martindale BCM, Hutton GAM, Caputo CA, et al., 2017, Enhancing Light Absorption and Charge Transfer Efficiency in Carbon Dots through Graphitization and Core Nitrogen Doping, ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, Vol: 56, Pages: 6459-6463, ISSN: 1433-7851
Pont S, Bryant D, Lin C-T, et al., 2017, Tuning CH3NH3Pb(I1-xBrx)(3) perovskite oxygen stability in thin films and solar cells, JOURNAL OF MATERIALS CHEMISTRY A, Vol: 5, Pages: 9553-9560, ISSN: 2050-7488
Warnan J, Willkomm J, Ng JN, et al., 2017, Solar H-2 evolution in water with modified diketopyrrolopyrrole dyes immobilised on molecular Co and Ni catalyst-TiO2 hybrids, CHEMICAL SCIENCE, Vol: 8, Pages: 3070-3079, ISSN: 2041-6520
Belzile M-N, Godin R, Durantini AM, et al., 2016, Monitoring Chemical and Biological Electron Transfer Reactions with a Fluorogenic Vitamin K Analogue Probe, JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, Vol: 138, Pages: 16388-16397, ISSN: 0002-7863
Godin R, Cosa G, 2016, Counting Single Redox Turnovers: Fluorogenic Antioxidant Conversion and Mass Transport Visualization via Single Molecule Spectroelectrochemistry, Journal of Physical Chemistry C, Vol: 120, Pages: 15349-15353, ISSN: 1932-7447
Greene LE, Godin R, Cosa G, 2016, Fluorogenic Ubiquinone Analogue for Monitoring Chemical and Biological Redox Processes, JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, Vol: 138, Pages: 11327-11334, ISSN: 0002-7863
Kasap H, Caputo CA, Martindale BCM, et al., 2016, Solar-Driven Reduction of Aqueous Protons Coupled to Selective Alcohol Oxidation with a Carbon Nitride-Molecular Ni Catalyst System, JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, Vol: 138, Pages: 9183-9192, ISSN: 0002-7863
Godin R, Palacios RE, Cosa G, 2015, Heterogeneous Charge Mobility in Individual Conjugated Polyelectrolyte Nanoparticles Revealed by Two-Color Single Particle Spectroelectrochemistry Studies, JOURNAL OF PHYSICAL CHEMISTRY C, Vol: 119, Pages: 12875-12886, ISSN: 1932-7447
Godin R, Sherman BD, Bergkamp JJ, et al., 2015, Charge-Transfer Dynamics of Fluorescent Dye-Sensitized Electrodes under Applied Biases, JOURNAL OF PHYSICAL CHEMISTRY LETTERS, Vol: 6, Pages: 2688-2693, ISSN: 1948-7185
Godin R, Liu H-W, Cosa G, 2014, Ambient condition oxidation in individual liposomes observed at the single molecule level, CHEMICAL SCIENCE, Vol: 5, Pages: 2525-2529, ISSN: 2041-6520
Godin R, Liu H-W, Smith L, et al., 2014, Dye Lipophilicity and Retention in Lipid Membranes: Implications for Single-Molecule Spectroscopy, LANGMUIR, Vol: 30, Pages: 11138-11146, ISSN: 0743-7463
Krumova K, Greene LE, Godin R, et al., 2014, Development of fluorogenic antioxidants to monitor reactive oxygen species in the lipid membrane of live cells, Microscopy and Microanalysis, Vol: 20, Pages: 1356-1357, ISSN: 1431-9276
Hernandez LI, Godin R, Bergkamp JJ, et al., 2013, Spectral Characteristics and Photosensitization of TiO2 Nanoparticles in Reverse Micelles by Perylenes, JOURNAL OF PHYSICAL CHEMISTRY B, Vol: 117, Pages: 4568-4581, ISSN: 1520-6106
Borozenko O, Godin R, Lau KL, et al., 2011, Monitoring in Real-Time the Degrafting of Covalently Attached Fluorescent Polymer Brushes Grafted to Silica Substrates-Effects of pH and Salt, MACROMOLECULES, Vol: 44, Pages: 8177-8184, ISSN: 0024-9297
Maurel V, Laferriere M, Billone P, et al., 2006, Free radical sensor based on CdSe quantum dots with added 4-amino-2,2,6,6-tetramethylpiperidine oxide functionality, JOURNAL OF PHYSICAL CHEMISTRY B, Vol: 110, Pages: 16353-16358, ISSN: 1520-6106
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