【作者】 杨合； 薛向欣； 刘卯； 董学文； 左良；

【Author】 YANG He, XUE Xiang-xin, LIU Mao, DONG Xue-wen, ZUO Liang (School of Materials and Metallurgy, Northeastern Univeisity, Shenyang 110004, China)

【机构】 东北大学材料与冶金学院；

【摘要】 半导体光催化氧化技术是一种新型的现代化水处理技术。对多种有机物有明显的降解效果,具有广泛的前景,近年来,半导体光催化氧化已成为光化学领域和环保领域中的研究热点之一。实验研究了处理后的几种含钛物料对水溶液中染料亚甲基蓝降解的过程,讨论了其光催化活性与其TiO2含量,溶液的PH值、氧化剂加入及外加电场的关系。结果表明:五种含钛物料均具有光催化活性,光催化活性与其TiO2含量有关;降解染料亚甲基蓝时与溶液PH有关,PH=10时光催化效果最好;氧化剂加入、外加电场可提高光催化反应速度。更多还原

【Abstract】 The technique of photocatalytic oxidation which utilizes a semiconductor as catalyst is a new kind of water treatment process with great potential application in water treatment for its good ability to utilize natural resource ,solar energy ,and its outstanding effect on degradation of organic substances. It has now become one of the popular research subjects in the field of photochemistry and environment protection. An experiment have been studyed that the process of photocatalytic degradation of methylene blue in anaqueous solution with the different kind of materials containing TiO2 treaded by different method. The effects of TiO2 composition, pH volume, amount H2O2 and electric voltage were studied. The results indicate that all of them have photocatalytic activity. And it is influenced by TiO2 composition, pH volume, amount H2O2 and electric voltage . The effect is best when the PH equal 10. The speed of photocatalysis will be increase through adding oxidant, adding electric voltage.更多还原