Journal ArticleDOI
Steady hydrogen evolution from water on Eosin Y-fixed TiO2 photocatalyst using a silane-coupling reagent under visible light irradiation
TLDR
In this article, a chemical fixation of xanthene dyes on platinized TiO 2 particles via silane-coupling reagent was attempted in order to construct a stable dye-sensitized photocatalyst system in water.Abstract:
A chemical fixation of xanthene dyes on platinized TiO 2 particles via silane-coupling reagent was attempted in order to construct a stable dye-sensitized photocatalyst system in water. The Eosin Y fixed Pt-TiO 2 (E.Y-TiO 2 ) exhibited steady H 2 production from aqueous triethanolamine solution (TEOA aq.) under visible light irradiation for long time, and the H 2 evolution reproduced even after the exchange of TEOA aq., while the H 2 evolution from the mixture of Eosin Y (E.Y) and Pt-TiO 2 ceased in 10 h. The turnover number of the dye molecule fixed on TiO 2 surface reached more than 10,000, and the quantum yield of the E.Y-TiO 2 at 520 nm was determined to be about 10%.read more
Citations
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Semiconductor-based Photocatalytic Hydrogen Generation
TL;DR: Approaches to Modifying the Electronic Band Structure for Visible-Light Harvesting and its Applications d0 Metal Oxide Photocatalysts 6518 4.4.1.
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Titanium dioxide-based nanomaterials for photocatalytic fuel generations.
TL;DR: Generations Yi Ma,† Xiuli Wang,† Yushuai Jia,† Xiaobo Chen,‡ Hongxian Han,*,† and Can Li*,†
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Weyl Semimetals as Hydrogen Evolution Catalysts
Catherine R. Rajamathi,Uttam Gupta,Nitesh Kumar,Hao Yang,Yan Sun,Vicky Süß,Chandra Shekhar,Marcus Schmidt,Horst Blumtritt,Peter Werner,Binghai Yan,Stuart S. P. Parkin,Claudia Felser,C. N. R. Rao +13 more
TL;DR: The study shows that the combination of robust topological surface states and large room temperature carrier mobility, both of which originate from bulk Dirac bands of the Weyl semimetal, is a recipe for high activity HER catalysts.
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Visible light induced photocatalytic degradation of organic pollutants
TL;DR: In this paper, the role of Fe(II)/Fe(III) species in the sensitization process of various substrates helping it in the process to photocatalytic degradation reactions of organic pollutants has been highlighted.
Journal ArticleDOI
Recent progress on photocatalytic and photoelectrochemical water splitting under visible light irradiation
TL;DR: A review of recent progress in this field can be found in this article by focusing on strategies that utilize visible light, such as two-step photoexcitation systems that were inspired by photosynthesis in nature, band engineering for producing novel photocatalysts that have both a high visible light absorption and suitable energy levels for water splitting, the development of new cocatalyst for efficient H 2 or O 2 production, fabrication of efficient photoelectrodes based on visible-light-responsive semiconductors, and the construction of tandem-type PEC water-splitting systems
References
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Journal ArticleDOI
Photodecomposition of water over Pt/TiO2 catalysts
S. Sato,J. M. White +1 more
TL;DR: In this article, the authors demonstrate that the decomposition of water is catalytic at 23°C when a platinized, powdered titanium dioxide catalyst, illuminated with band-gap radiation, is used.
Journal ArticleDOI
New tantalate photocatalysts for water decomposition into H2 and O2
Hideki Kato,Akihiko Kudo +1 more
TL;DR: In this article, the photocatalytic properties of various tantalates were investigated for the decomposition of distilled water into H2 and O2 without co-catalysts.
Journal ArticleDOI
Photocatalytic decomposition of water over NiOK4Nb6O17 catalyst
TL;DR: In this paper, a photocatalytic decomposition of H2O to form H2 and O2 over NiOK4Nb6O17 powder (1-10 μm, band gap = 3.3 eV), which is an ion-exchangeable layered compound, proceeds steadily more than 50 h under the bandgap irradiation.
Journal ArticleDOI
Importance of binding states between photosensitizing molecules and the TiO2 surface for efficiency in a dye-sensitized solar cell
Kei Murakoshi,Gentaro Kano,Yuji Wada,Shozo Yanagida,Hiromitsu Miyazaki,Masamitsu Matsumoto,Sadao Murasawa +6 more
TL;DR: In this paper, a dye-sensitized TiO2 solar cell was constructed using a ruthenium complex, cis-di(thiocyanato)-N,N′-bis(2,2′-bipyridyl-4,4′-dicar☐ylic acid)-ruthenIUM (II), as a photosensitizing molecule (dye) on TiO 2 nanocrystallite films to determine the interfacial binding effect on photoenergy conversion efficiency.
Journal ArticleDOI
Electrochemical techniques for the study of photosensitization
TL;DR: In this paper, the conditions for suitable experimental arrangements are characterized and examples show spectral sensitization of photocurrents due to electron or hole injection into inorganic or organic solids.
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