Journal ArticleDOI
Photodriven heterogeneous charge transfer with transition-metal compounds anchored to TiO2 semiconductor surfaces
Shane Ardo,Gerald J. Meyer +1 more
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A critical review of light-driven interfacial charge-transfer reactions of transition-metal compounds anchored to mesoporous, nanocrystalline TiO2 (anatase) thin films is described.Abstract:
A critical review of light-driven interfacial charge-transfer reactions of transition-metal compounds anchored to mesoporous, nanocrystalline TiO2 (anatase) thin films is described. The review highlights molecular insights into metal-to-ligand charge transfer (MLCT) excited states, mechanisms of interfacial charge separation, inter- and intra-molecular electron transfer, and interfacial charge-recombination processes that have been garnered through various spectroscopic and electrochemical techniques. The relevance of these processes to optimization of solar-energy-conversion efficiencies is discussed (483 references).read more
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Dye-Sensitized Solar Cells
TL;DR: Dye-sensitized solar cells (DSCs) offer the possibilities to design solar cells with a large flexibility in shape, color, and transparency as mentioned in this paper, and many DSC research groups have been established around the world.
Journal ArticleDOI
Graphitic Carbon Nitride (g-C3N4)-Based Photocatalysts for Artificial Photosynthesis and Environmental Remediation: Are We a Step Closer To Achieving Sustainability?
TL;DR: It is anticipated that this review can stimulate a new research doorway to facilitate the next generation of g-C3N4-based photocatalysts with ameliorated performances by harnessing the outstanding structural, electronic, and optical properties for the development of a sustainable future without environmental detriment.
Journal ArticleDOI
Semiconductor-mediated photodegradation of pollutants under visible-light irradiation
TL;DR: In this tutorial review, the unique mechanistic characteristics, the constitution of photodegradation systems and their performance are described and the involved radical reactions during the degradation are discussed.
Journal ArticleDOI
Artificial photosynthesis for solar water-splitting
TL;DR: In this paper, a vision for a future sustainable hydrogen fuel community based on artificial photosynthesis is outlined and current progress towards artificial photosynthetic devices is reviewed, with particular focus on visible light active nanostructures.
Journal ArticleDOI
Spatial separation of photogenerated electrons and holes among {010} and {110} crystal facets of BiVO4
Rengui Li,Fuxiang Zhang,Donge Wang,Jingxiu Yang,Jingxiu Yang,Mingrun Li,Jian Zhu,Jian Zhu,Xin Zhou,Hongxian Han,Can Li +10 more
TL;DR: The results show that the photogenrated electrons and holes can be separated between the different facets of semiconductor crystals, which may be useful in semiconductor physics and chemistry to construct highly efficient solar energy conversion systems.
References
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Journal ArticleDOI
Effect of Annealing Temperature on Back Electron Transfer and Distribution of Deep Trap Sites in Dye-Sensitized TiO2, Studied by Time-Resolved Infrared Spectroscopy
Kan Takeshita and,Yutaka Sasaki,Masahiro Kobashi,and Yuki Tanaka,Shuichi Maeda,Akira Yamakata,and Taka-aki Ishibashi,Hiroshi Onishi +7 more
TL;DR: In this article, the effect of annealing temperature on electron dynamics in Ru complex-sensitized TiO2 films was studied by highly sensitive measurement of transient IR absorption.
Journal ArticleDOI
The One-Electron Outer-Sphere Oxidation of Iodide and of Thiocyanide Ions by Transition Metal Complexes: Linear Free-Energy Relationships
TL;DR: The title reactions involve parallel and consecutive one-electron oxidations giving I, I2- and SCN, (SCN)2- as radical intermediates as discussed by the authors.
Journal ArticleDOI
Tuning open circuit photovoltages with tripodal sensitizers.
TL;DR: Control of the sensitizer-TiO2 orientation is important for efficient power optimization in regenerative solar cells with LiI/0.005 M I2 dichloromethane electrolyte.
Journal ArticleDOI
Conduction band mediated electron transfer across nanocrystalline TiO2 surfaces.
TL;DR: Electrochemical measurements show that the compounds first reduction occurs prior to or commensurate with the reduction of the TiO2 electrode, andarent diffusion constants, Dapp, abstracted from chronoabsorption data measured in acetonitrile were found to be dependent on the applied potential and the electrolyte used.
Journal ArticleDOI
Inhomogeneity of electron injection rates in dye-sensitized TiO2: comparison of the mesoporous film and single nanoparticle behavior.
TL;DR: Time-correlated single photon counting microscopy was used to compare the emission behavior of dye-sensitized mesoporous films of TiO2 with that of individual anatase nanoparticles that had undergone extensive dialysis, and unusual collective emission bursts were observed in some of the measurements on sensitized nanoparticles.