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.
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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.
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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.
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Artificial photosynthesis for solar water-splitting
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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
Excited State Electron Transfer from Ru(II) Polypyridyl Complexes Anchored to Nanocrystalline TiO2 through Rigid-Rod Linkers
Dong Wang,Richard Mendelsohn,Elena Galoppini,Paul G. Hoertz,Rachael A. Carlisle,Gerald J. Meyer +5 more
TL;DR: In this paper, rigid-rod linkers varying in length were used to bind Ru(II) polypyridyl complexes to the surface of TiO2 (anatase) and of ZrO2 nanoparticle thin films.
Journal ArticleDOI
Evidence for multiple-state emission from ruthenium(II) complexes
TL;DR: In this article, the lifetime of decay and the quantum yield of luminescence for tris(2,2′-bipyridine)ruthenium(II) cation were measured for each individual level and group theoretical symmetry assignments were made on the basis of a proposed electronic coupling model.
Journal ArticleDOI
Using spectroscopy to probe the band energetics of transparent nanocrystalline semiconductor films
TL;DR: In this article, the flatband potential of a photoelectrochemical cell based on polycrystalline semiconductor films is derived from the measured relationship between free electron absorbance or the Burstein shift, and the applied potential at different pHs.
Journal ArticleDOI
Determination of exciton hopping rates in ruthenium(II) tris(bipyridine) complexes by picosecond polarized absorption spectroscopy
TL;DR: In this paper, the depolarization ratio exhibits a biexponential decay, consisting of 75 ps and 2.4 ns components, and the two components of the decay are assigned to exciton hopping and to rotational diffusion.
Journal ArticleDOI
Synthesis and electron transfer studies of ruthenium-terpyridine-based dyads attached to nanostructured TiO2.
Henriette Wolpher,Subrata Sinha,Jingxi Pan,Anh Johansson,Maria J. Lundqvist,Petter Persson,Reiner Lomoth,Jonas Bergquist,Licheng Sun,Villy Sundström,Björn Åkermark,Tomáš Polívka +11 more
TL;DR: A series of bis(terpyridine)RuII complexes have been prepared, where one of the terpyridines is functionalized in the 4'-position by a phosphonic or carboxylic acid group for attachment to TiO2, followed by secondary electron transfer from the donor to the photogenerated RuIII.