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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Optical–thermal properties of reduced TiO2 microspheres prepared by flame spraying
TL;DR: In this paper, the reduced TiO 2 microspheres with a diameter of 20-30μm were prepared by flame spraying and compared with the raw material, the resulting microsphere with black color exhibited a narrow bandgap of 2.32-eV and excellent optical-thermal properties.
Journal ArticleDOI
Distribution and concentration of surface oxygen vacancy of TiO2 and its photocatalytic activity
Tianqi Cao,Tianyu Xia,Liang Zhou,Guoqiang Li,Xing Chen,He Tian,Jiali Zhao,Jiaou Wang,Weifeng Zhang,Shunfang Li,Sheng Meng,Haizhong Guo,Haizhong Guo +12 more
Journal ArticleDOI
Enhancement of Photo-Oxidation Activities Depending on Structural Distortion of Fe-Doped TiO2 Nanoparticles
TL;DR: The reduction of the bandgap to the visible range was investigated with reference to the surface distortion of anatase TiO2 nanoparticles induced by varying Fe doping concentrations to design a high-performance photocatalytic system withTiO2.
Journal ArticleDOI
Reducible oxide and allotropic transition induced by hydrogen annealing: synthesis routes of TiO2 thin films to tailor optical response
TL;DR: In this article, the optical properties of hydrogenated TiO2 thin films deposited by the ion beam sputtering method are reported by reducing the oxide by hydrogenation in situ (during deposition) and ex situ (by means of posterior thermal annealing) to improve photoactivity for solar energy conversion and catalytic applications.
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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