| 英文摘要 |
Heterogeneous semiconductor photocatalysis reveals an emerging demand of environmental catalysis with significant potential to detoxify noxious organic pollutants in an effective manner. A variety of semiconductor materials have been investigated for the usage due to the growing interest in the development of inexpensive and efficient methodologies to reduce environmental problems. TiO2 is the most popular semiconductor photocatalyst been investigated because of its stability, nontoxicity, availability, and cost-effectiveness, as well as its ability to degrade a variety of harmful pollutants such as VOCs and organic substance in water. However, the main obstacles for the application of photocatalyst such as coating technology and adhesion problem were not solved yet, especially for its extending practice for general customers.
The objective of this research was to develop a simple and innovate processing method for photocatalyst technology and to investigate the reaction behavior of the photooxidation of both gas-phase volatile organic compounds and liquid-phase organic compound in the presence of titanium dioxide. The coverage and surface properties TiO2 layer ocated on different substrates by various coating technologies will be examined. Various substrates such as stainless steel, PMMA sheet, ceramic and glass were used in this experiment and excellent coating appearance for all materials could be achieved via unique modification of titanium dioxide. The research also includes the investigation relating to the effect of photocatalyst and base substrate on UV photocatalysis. Experimental result has been shown to be feasible to decompose gas-phase and liquid-phase organic compounds.
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