西南石油大学学报(自然科学版) ›› 2003, Vol. 25 ›› Issue (3): 66-68.DOI: 10.3863/j.issn.1000-2634.2003.03.019

• 油气化学工程与化工 • 上一篇    下一篇

光催化氧化降解染料中电子转移体的选择

丰敏 陈集 饶小桐 牟丹 罗建生
  

  1. 西南石油学院化学化工学院,四川 南充 637001
  • 收稿日期:2002-07-20 修回日期:1900-01-01 出版日期:2003-06-20 发布日期:2003-06-20
  • 通讯作者: 丰敏

SELECTION OF ELECTRON-TRANSMITTER IN DYE DEGRADING BY PHOTO-CATALYTIC OXIDATION

FENG Min CHEN Ji RAO Xiao-tong et al
  

  1. Southwest Petroleum Institute, Nanchong Sichuan 637001, China
  • Received:2002-07-20 Revised:1900-01-01 Online:2003-06-20 Published:2003-06-20
  • Contact: FENG Min

摘要: 利用两种不同的催化剂,进行了不同光源和不同电子转移体时光催化氧化降解甲基橙和工业染料的实验。用O2作为电子转移体时,催化剂降解效果很低;但以H2O2作为电子转移体时,催化剂在太阳光照射下仅需20 min左右就可使甲基橙的降解效果达90%,对浓度为100 mg/L的实际工业染料,可达50%~60%的COD去除率和接近完全脱色的效果。通过实验结果得出:电子转移体对电子的有效转移对光催化氧化过程的重要性,并评价出H2O2是比O2更有效的电子转移体。

关键词: 催化剂, 光催化氧化, 电子转移体, 染料

Abstract: Two kinds of catalysts have been used to degrade methylorange and dyes under the different light-lamp and with different electron-transmitter. The catalysts have low activity when the transmitter is O2, while the catalysts show high activity when the transmitter is H2O2. After 20 minutes reaction under sun-light, the degradation of methyl-orange can reach 90% and
the COD remove ratio of the dye can reach 50%~60% and it has little color. Results have showed that the electron-transmitter is one important factor for the process of effective photocatalytic oxidation and H2O2 is more effective than O2 as electron-transmitter.

Key words: catalysts, photo-catalytic oxidation, electrontransmitter, dye

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