应用化学 ›› 1995, Vol. 0 ›› Issue (6): 29-32.

• 研究论文 • 上一篇    下一篇

水溶性染料在PbTiO3体系中的光催化降解

王俊珍, 古凤才, 颜秀茹, 王建苹, 曾淑兰   

  1. 天津大学化学系, 天津 300072
  • 收稿日期:1995-02-06 修回日期:1995-07-22 出版日期:1995-12-10 发布日期:1995-12-10
  • 基金资助:
    国家自然科学基金及天津市21世纪青年科学基金资助项目

Photodegtgradation of Water-Soluble Dyes in PbTiO3 System

Wang Junzhen, Gu Fengcai, Yan Xiuru, Wang Jianping, Zeng Shulan   

  1. Department of Chemistry, Tianjin University, Tianjin 300072
  • Received:1995-02-06 Revised:1995-07-22 Published:1995-12-10 Online:1995-12-10

摘要: 以PbTiO3为光催化剂,对多种水溶性染料的光催化降解反应进行了研究,结果表明:光降解脱色效率与染料溶液的pH值、光照时间、光源种类及催化剂用量等因素有关.染料溶液浓度为10mg/L,pH=6,催化剂用量为100mg/50mL,直接以太阳光作光源,光照1h以后,脱色率达90%以上,有机染料中硫和氮元素转化为SO42-和NO3-的生成率分别为85%和65%.

关键词: 水溶性染料, 光催化降解, PbTiO3, 能带隙

Abstract: The photocatalytic destruction and decolorization of several water-soluble dyesunder natural sun light and 450W high pressure Hg-lamp irradiation in the presence of photo-catalyst Pb TiO3 were studied.The experiments show that the efficiency of decolorization isrelated to the pH value of dye solution,irradiation time,as well as the intensity of irradiation.After irradiation with sun light for 1h,the decolorizing efficiency was up to 90% whenthe concentration of dyes was 10mg/L and the amount of catalyst was 100mg in 50mL dyesolution.

Key words: water-soluble dye, photocatalytic destruction, PbTiO3, band gap