Abstract
Photocatalysis is an advanced oxidation process for decomposing organic pollutants in water and air. Titanium dioxide (TiO2) is a best semiconductor for photocatalysis due to its strong oxidizing power under UV illumination and chemical stability. This chapter investigates a pilot project undertaken by Architectural Services Department of the HKSAR Government on the application of titanium dioxide where the internal wall surfaces of a newly completed refuse collection point (RCP) were coated with titanium dioxide. The indoor air quality (lAQ) of this RCP was then measured and the results were compared to the indoor air quality of another RCP of similar construction and locality but without titanium dioxide wall coating. The chapter finally compares the measured lAQ data of the two RCPs and the data, and focuses on the application of titanium dioxide in the construction industry.
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