Journal ArticleDOI
Self-Doped Ti3+ Enhanced Photocatalyst for Hydrogen Production under Visible Light
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TLDR
The UV-vis spectra show that the Ti(3+) here extends the photoresponse of TiO(2) from the UV to the visible light region, which leads to high visible-light photocatalytic activity for the generation of hydrogen gas from water.Abstract:
Through a facile one-step combustion method, partially reduced TiO2 has been synthesized. Electron paramagnetic resonance (EPR) spectra confirm the presence of Ti3+ in the bulk of an as-prepared sample. The UV−vis spectra show that the Ti3+ here extends the photoresponse of TiO2 from the UV to the visible light region, which leads to high visible-light photocatalytic activity for the generation of hydrogen gas from water. It is worth noting that the Ti3+ sites in the sample are highly stable in air or water under irradiation and the photocatalyst can be repeatedly used without degradation in the activity.read more
Citations
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Exploitation of the synergistic effect between surface and bulk defects in ultra-small N-doped titanium suboxides for enhancing photocatalytic hydrogen evolution
TL;DR: In this article, a double-faced role of surface and bulk defects in engineering the band gap and charge carrier transfer-separation rate of ultra-small N-doped titanium suboxides with abundant surface bonds is proposed.
Journal ArticleDOI
One-pot hydrothermal synthesis of zeolite/sodium tantalate composite and its photodegradation of methyl orange
TL;DR: In this paper, the sodalite/NaTaOO-sub 3 composite was prepared by a one-pot hydrothermal synthesis method, and the resulting composites have similar morphology as the pure sodalites.
Journal ArticleDOI
TiO2 Polarons in the Time Domain: Implications for Photocatalysis
Alex J Tanner,Geoff Thornton +1 more
TL;DR: Recent advances in TiO2 photochemistry are discussed, with a particular focus on two-photon photoemission spectroscopy and density functional theory (DFT), and the implications for photocatalysis are discussed.
Journal ArticleDOI
Versatile Syntheses of Mesoporous Crystalline TiO2 Materials from Mono-micelle Assembly.
TL;DR: In this article , the mesoporous TiO 2 structures with novel mesoscopic and microscopic configurations are proposed to offer ample opportunities for various applications, including catalysis, biomedicine, and energy storage and conversion.
Journal ArticleDOI
The roles of surface oxygen vacancy over Mg4Ta2O9-x photocatalyst in enhancing visible-light photocatalytic hydrogen evolution performance
TL;DR: In this paper, the authors introduced surface oxygen vacancies into Mg 4 Ta 2 O 9 and constructed a narrow band gap photocatalyst by a simple low temperature reduction method, which significantly extended the light absorption range of wideband gap semiconductor oxides.
References
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Journal ArticleDOI
Visible-Light Photocatalysis in Nitrogen-Doped Titanium Oxides
TL;DR: Film and powders of TiO2-x Nx have revealed an improvement over titanium dioxide (TiO2) under visible light in optical absorption and photocatalytic activity such as photodegradations of methylene blue and gaseous acetaldehyde and hydrophilicity of the film surface.
Journal ArticleDOI
Efficient photochemical water splitting by a chemically modified n-TiO2.
TL;DR: A chemically modified n-type TiO2 is synthesized by controlled combustion of Ti metal in a natural gas flame and performs water splitting with a total conversion efficiency of 11% and a maximum photoconversion efficiency of 8.35% when illuminated at 40 milliwatts per square centimeter.
Journal ArticleDOI
Inorganic Materials as Catalysts for Photochemical Splitting of Water
TL;DR: A review of the known inorganic catalysts with a focus on structure-activity relationships is given in this article, where the first water splitting system based on TiO2 and Pt was proposed by Fujishima and Honda in 1972.
Journal ArticleDOI
Surface Science Studies of the Photoactivation of TiO2New Photochemical Processes
Tracy L. Thompson,John T. Yates +1 more
Journal ArticleDOI
Infrared Absorption of Reduced Rutile Ti O 2 Single Crystals
TL;DR: In this paper, the infrared absorption of a series of plane parallel plates having electrical resistivities ranging from 3 to 0.01 ohm-m has been examined and it is postulated that the electrical conductivity arises from the ionization of either one or two trapped electrons from each oxygen vacancy.
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