Journal ArticleDOI
Carbon coating of anatase-type TiO2 and photoactivity
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TLDR
Carbon coating of photocatalytic anatase-type TiO2 powders was successfully carried out by heating a powder mixture of poly(vinyl alcohol) and TiO 2 under N2 gas flow at temperatures above 700 °C.Abstract:
Carbon coating of photocatalytic anatase-type TiO2 powders was successfully carried out by heating a powder mixture of poly(vinyl alcohol) and TiO2 under N2 gas flow at temperatures above 700 °C. All particles of TiO2 were covered by a carbon layer and looked black. For methylene blue (MB) in aqueous solution, carbon-coated anatase powders thus prepared showed marked adsorption and decomposition under UV irradiation and were confirmed to keep almost the same photoactivity as that without any carbon coating. Carbon coating of anatase-type TiO2 was found to give different merits for photoactive performance; suppression of phase transformation from anatase to rutile at high temperatures, quick adsorption of MB into the carbon layer, decomposition of adsorbed MB by TiO2 and prevention of the interaction of TiO2 with binder resin. Repeated cycles of adsorption and decomposition of
methylene blue in aqueous solution were experimentally confirmed.read more
Citations
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Journal ArticleDOI
Photoinduced reactivity of titanium dioxide
TL;DR: In this paper, photo-induced superhydrophilicity was used on the surface of a wide-band gap semiconductor like titanium dioxide (TiO 2 ) for photocatalytic activity towards environmentally hazardous compounds.
Journal ArticleDOI
Surface modification of TiO2 photocatalyst for environmental applications
TL;DR: In this paper, a review of surface-modified TiO2 photocatalysis based on photo-induced interfacial charge transfer has been conducted, which is mainly focused on environmental remediation, and various surface modifiers are classified according to the kind of surface modifiers and their effects on photocatalytic reaction mechanism and kinetics are discussed in detail.
Journal ArticleDOI
A survey of photocatalytic materials for environmental remediation.
TL;DR: This review illustrates the efforts in the search of alternative photocatalysts that are not based on TiO(2), with some exceptions concerning particularly innovative modifications as nanoassembled TiO-based composites with active carbon, graphite and fullerene.
Journal ArticleDOI
Efficient TiO2 Photocatalysts from Surface Hybridization of TiO2 Particles with Graphite-like Carbon
Liwu Zhang,Hongbo Fu,Yongfa Zhu +2 more
TL;DR: In this paper, photoelectrochemical measurements confirm an electronic interaction between TiO2 and graphite-like carbon, and the mechanism of the enhanced photocatalytic activity under UV irradiation is based on the high migration efficiency of photoinduced electrons at the graphitelike carbon/TiO2 interface.
Journal ArticleDOI
Photocatalytic Activity Improvement and Application of UV-TiO2 Photocatalysis in Textile Wastewater Treatment: A Review
TL;DR: In this paper, the authors present a comprehensive and fundamental assessment of the photocatalytic activity for the removal of organic dyes and phenolic compounds from textile wastewater, which has been widely studied and is being commercialized in many developing countries in the world.
References
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Journal ArticleDOI
Environmental Applications of Semiconductor Photocatalysis
TL;DR: The slow pace of hazardous waste remediation at military installations around the world is causing a serious delay in conversion of many of these facilities to civilian uses as discussed by the authors, which is a serious problem.
Journal ArticleDOI
Bactericidal and Detoxification Effects of TiO2 Thin Film Photocatalysts
TL;DR: In this paper, a thin transparent titanium dioxide (TiO2) film was used for the degradation of E. coli cells, which is a pyrogenic constituent of Escherichia coli (E. coli).
Journal ArticleDOI
Kinetics of photocatalytic reactions under extremely low-intensity uv illumination on titanium dioxide thin films
TL;DR: In this article, the photocatalytic decomposition efficiency of gaseous 2-propanol was studied using a titanium dioxide thin film under very weak UV light; the incident UV light intensity was 36 nW−45 μW·cm-2.
Journal ArticleDOI
Characterization and photocatalytic activity in aqueous medium of TiO2 and Ag-TiO2 coatings on quartz
J.-M. Herrmann,Halima Tahiri,Y. Ait-Ichou,G. Lassaletta,Agustín R. González-Elipe,Asunción Fernández +5 more
TL;DR: In this paper, a dip-coating procedure on a quartz substrate was used to support the catalysts of Ag-TiO2 and TiO2 catalysts for photocatalytic degradation of malic acid.
Journal ArticleDOI
Effect of rutile phase on the photocatalytic properties of nanocrystalline titania during the degradation of p-coumaric acid
Revathi Bacsa,J. Kiwi +1 more
TL;DR: In this paper, nanocrystalline titania catalysts with high surface area (68-100m 2 /g) with varying amounts of anatase and rutile phases were tested during the photocatalyzed degradation of p -coumaric acid.