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《CHINESE JOURNAL OF CATALYSIS》 1999-03
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KINETIC STUDIES ON PHOTOCATALYTIC DEGRADATION OF PHENOL BY NANOMATERIAL TITANIUM DIOXIDE

Sun Fuxia 1, Wu Ming 1, Wang Hong 2, Wang Fudong 1, Gu Wanzhen 1 (1 Dalian Institute of Chemical Physics, The Chinese Academy of Sciences, Dalian 116023; 2 Department of Chemistry, Dalian University, Dalian 116622)  
The photocatalytic degradation of phenol with different initial concentration by titanium dioxide suspension has been investigated under irradiation of 125 W high pressure mercury lamp. The photocatalytic reaction was also examined under different pH values. The experimental results indicated that the apparent rate constant K of the photocatalytic degradation of phenol was related to the initial concentration and the pH value of the phenol solution. The apparent rate constant K linearly increased with increasing the initial phenol concentration and with increasing the pH value up to 9. Based on the experimental results, a zero order kinetic model was proposed, being different from that reported in literatures.
【Fund】: 中国科学院重大项目
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