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Role of the reduction site in the fluorinated or sulfated TiO2 photocatalytic process |
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| Authors: | YANG Shi-ying HU Hong CHEN You-yuan ZHENG Jian-guo and CUI Ying-jie |
| Institution: | 1. Key Lab of Marine Environmental Science and Ecology, Ministry of Education, Ocean University of China,Qingdao 266100, China;College of Environmental Science and Engineering, Ocean University of China, Qingdao 266100, China. 2. College of Environmental Science and Engineering, Ocean University of China, Qingdao 266100, China. |
| Abstract: | In this article, the effects of TiO2 surface fluorination and sulfation, on the active oxygen species formed at the reduction site in the recombination of photogenerated electrons and holes, thus enhancing the photocatalytic rate. In the sulfated system, photocatalysis proceeded with a more complicated mechanism. These results added support to the view of fluoride-induced enhancement and sulfide's nonappreciable inhibition effect. |
| Keywords: | TiO2 photocatalysis superoxide radicals surface modification initial mechanism process photocatalytic fluorinated site reduction inhibition effect results support view enhancement sulfide photocatalysis complicated mechanism system rate active oxygen species recombination effects surface |
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