Journal ArticleDOI
Low temperature preparation and visible light photocatalytic activity of mesoporous carbon-doped crystalline TiO2
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In this paper, a carbon-doped TiO2 photocatalyst was obtained by using glucose as a carbon source and was characterized by XRD, XPS, TEM, nitrogen adsorption, and UV-vis diffuse reflectance spectroscopy.Abstract:
A visible-light-active TiO2 photocatalyst was prepared through carbon doping by using glucose as carbon source. Different from the previous carbon-doped TiO2 prepared at high temperature, our preparation was performed by a hydrothermal method at temperature as low as 160 °C. The resulting photocatalyst was characterized by XRD, XPS, TEM, nitrogen adsorption, and UV–vis diffuse reflectance spectroscopy. The characterizations found that the photocatalyst possessed a homogeneous pore diameter about 8 nm and a high surface area of 126 m2/g. Comparing to undoped TiO2, the carbon-doped TiO2 showed obvious absorption in the 400–450 nm range with a red shift in the band gap transition. It was found that the resulting carbon-doped TiO2 exhibits significantly higher photocatalytic activity than the undoped counterpart and Degussa P25 on the degradation of rhodamine B (RhB) in water under visible light irradiation (λ > 420 nm). This method can be easily scaled up for industrial production of visible-light driven photocatalyst for pollutants removal because of its convenience and energy-saving.read more
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Synthesis of sulfur-doped TiO2 by solvothermal method and its visible-light photocatalytic activity
TL;DR: In this article, X-ray diffraction (XRD) patterns revealed that anatase was the predominant phase and some TiS 2 peaks were also observed when the sample was maintained at 180°C for 6.5h.
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Formation and photovoltaic performance of few-layered graphene-decorated TiO2 nanocrystals used in dye-sensitized solar cells.
Yueli Liu,Yuqing Cheng,Wei Shu,Zhuoyin Peng,Keqiang Chen,Jing Zhou,Wen Chen,Galina S. Zakharova +7 more
TL;DR: It is found that the good interface combination between few-layered graphene and TiO2 nanocrystals may improve the electric conductivity and lifetime of photoinduced electrons in DSSCs.
Journal ArticleDOI
One-step and large scale synthesis of non-metal doped TiO2 submicrospheres and their photocatalytic activity
TL;DR: In this paper, a simple and one-step method for the synthesis of C-doped TiO 2 submicrospheres has been developed via hydrolysis of titanium tetraisopropoxide in pure methanol followed by calcination under air at 500°C.
Journal ArticleDOI
Carbon-modified bismuth titanate nanorods with enhanced visible-light-driven photocatalytic property
TL;DR: In this paper, a carbon-modified bismuth titanate (C-Bi12TiO20) nanorods as visible-light-driven photocatalysts were synthesized via a facile hydrothermal process in the presence of glucose followed by the calcinations in Ar gas at 500 °C.
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Preparation, characterization, and photocatalytic activity of three-dimensionally ordered macroporous hybrid monosubstituted polyoxometalate K5[Co(H2O)PW11O39] amine functionalized titanium catalysts
TL;DR: In this paper, an amine-functionalized three-dimensional ordered macroporous (3DOM) titanium (Ti) catalyst modified using transition metal-monosubstituted polyoxometalate (POM, K 5 [Co(H 2 O)PW 11 O 39 ]) was fabricated by self-assembly method.
References
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Reporting physisorption data for gas/solid systems with special reference to the determination of surface area and porosity (Recommendations 1984)
TL;DR: Mise au point comportant des definitions generales et la terminologie, la methodologie utilisee, les procedes experimentaux, les interpretations des donnees d'adsorption, les determinations de l'aire superficielle, and les donnes sur la mesoporosite et la microporosite.
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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.
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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.
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The Role of Metal Ion Dopants in Quantum-Sized TiO2: Correlation between Photoreactivity and Charge Carrier Recombination Dynamics
TL;DR: In this article, the presence of metal ion dopants in the TiO_2 crystalline matrix significantly influences photoreactivity, charge carrier recombination rates, and interfacial electron-transfer rates.
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Colloidal carbon spheres and their core/shell structures with noble-metal nanoparticles.
Xiaoming Sun,Yadong Li +1 more
TL;DR: Only amorphous silica and some colloidal polymer spheres can be routinely prepared with satisfactorily narrow size distributions, and surface modification almost unavoidable before use as supports or templates.