Heterogeneous Photocatalysis: Recent Advances and Applications

来自 EBSCO

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541

作者：

AO Ibhadon，P Fitzpatrick

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摘要：

Semiconductor heterogeneous photocatalysis, the subject of this review, is a versatile, low-cost and environmentally benign treatment technology for a host of pollutants. These may be of biological, organic and inorganic in origin within water and air. The efficient and successful application of photocatalysis demands that the pollutant, the catalyst and source of illumination are in close proximity or contact with each other. The ability of advanced oxidation technology to remove low levels of persistent organic pollutants as well as microorganisms in water has been widely demonstrated and, progressively, the technology is now being commercialized in many areas of the world including developing nations. This review considers recent developments in the research and application of heterogeneous semiconductor photocatalysis for the treatment of low-level concentrations of pollutants in water and air using titanium dioxide as a "model" semiconductor. The review considers charge transport characteristics on the semiconductor surface, photocatalyst reactor design and organic degradation mechanistic pathways. The effects of photoreactor operating parameters on the photocatalytic process are discussed in addition to mineralization and disinfection kinetics.

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关键词：

Bibliography, General or Review/ air pollution control catalysis chemical engineering design for environment microorganisms photochemistry titanium compounds water pollution/ semiconductor heterogeneous photocatalysis environmentally benign treatment technology pollutant treatment biological pollutant organic pollutant inorganic pollutant water pollution air pollution photocatalysis demand oxidation technology microorganism titanium dioxide semiconductor surface photocatalyst reactor design organic degradation mechanistic pathway mineralization kinetics disinfection kinetics/ A8675C Pollution removal at source A8250 Photochemistry and radiation chemistry A8265J Heterogeneous catalysis at surfaces and other surface reactions A8670E Water (environmental science) A8670G Atmosphere (environmental science) E0230 Environmental issues E1400 Design E1710 Engineering materials E3626 Chemical industry