摘要
以太阳光为光源、活性染料活性红为主要研究对象 ,研究了用光化学催化降解有机物的新方法及其催化机理 .研究结果表明 :光可激发H2 O2 的氧化反应 ,加快活性染料的氧化褪色速度 ;TiO2 粉末的光催化作用也较显著 ;一种廉价、无毒催化剂 (CHY)具有很强的光催化性能 ,在同等光照和pH值条件下 ,该催化剂对染料的褪色速度为H2 O2 的 3倍 ,TiO2 的 15倍 ,且与H2 O2 或 (和 )TiO2 具有协同作用 ,使染料的光解褪色速度进一步加快 .高效光催化剂CHY的发现为工业上合理利用太阳能 ,实现光化学降解有机污染的产业化提供了一条可行的新途径 .
The degradation of active dyes by photocatalysis using solar energy was investigated. The results show that the oxidation of H_2O_2 can be activized by solar energy and therefore the degradation rate of active dyes is speeded. The photocatalysis is obvious for the degradation of active dyes with TiO_2 powder. Particularly, a cheap, nontoxic and very efficient catalyst(CHY) is found. Its catalytic rate is 15, 3 times faster than that of the very popular TiO_2 and H_2O_2, respectively. In addtion, CHY has synergetic effect with TiO_2 and H_2O_2. Because it is cheap, nontoxic and without the trouble for recovery, it is possible to combine CHY with other calalysts in a more effectctive and reasonable way to treat various organic effluents.
出处
《中南工业大学学报》
CSCD
北大核心
2002年第5期480-483,共4页
Journal of Central South University of Technology(Natural Science)
