半导体光催化降解气态三氯甲烷的研究

Semiconductor Photocatalytic Degradation of Gaseous Trichloromethane

以15W主波长为254um的紫外杀菌灯为光源,锐钛型二氧化钛为催化剂,能够使气态三氯甲烷发生半导体光催化降解反应。空气流量和光强对反应有较大影响。反应产物中氯离子和氢离子浓度基本相等。

Photocatalytic degradation of trichloromethane in gaseous phase has been studied by using anatase titanium dioxide powder as catalyst. The photoreactor was illuminated with a 15W (main wave length 254nm) UV lamp. The results indicated that semiconductor photocatalysis could be an effective process for degradation of gaseous trichloromethane. Air flow and light intensity did affect the degradation rate. The aqueous solution products were proved to contain chloride and hydrogen ions with approximately equal concentration.