化工新型材料

化工新型材料 ›› 2019, Vol. 47 ›› Issue (5) : 190-192.

科学研究

陶瓷负载TiO₂复合材料的制备及光催化降解废水中苯酚的研究

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Degradation of phenol in wastewater photocatalyzed by ceramic supported TiO₂

Hu Xiuhong³, Zhang Tinghui², Wang Xiang^1,3, Cai Lingyun¹, Li Dang¹

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文章历史 +

Received
2018-11-21
Issue Date	Revised Date
2019-06-17	2018-11-21

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摘要

以钛酸丁酯为原料,制备出TiO₂光催化材料。以苯酚废水为模拟目标降解物,考察了苯酚初始质量浓度、初始pH和不同光照强度等因素对废水中苯酚降解率的影响。结果表明:陶瓷负载TiO₂制得的光催化剂在300W汞灯照射下,当苯酚初始质量浓度为50mg/L,初始pH=7,光照距离为11cm时,对苯酚的降解率较高,pH=7时有利于反应的进行,处理效果较好。反应机理为TiO₂受光照射后,产生光生电子-空穴对,使苯酚得到还原。

Abstract

Nanometer TiO₂ photocatalytic material was prepared by a sol-gel method using tetrabutyl titanate.The effect of initial concentration,initial pH and different light intensity on phenol degradation rate of wastewater was investigated by using phenol wastewater as the target of degradation.The experimental results showed that when the initial concentration of solution was 50mg/L,the initial pH was 7,and the illumination distance was 11cm,the degradation rate of phenol was higher when 300W mercury lamp irradiation.The reaction mechanism was that after TiO₂ was irradiated by light,photoelectron-hole pairs were generated so that phenol can be reduced.

关键词

陶瓷负载 / TiO₂ / 光催化 / 废水

Key words

ceramic supporting / TiO₂ / photocatalysis / wastewater

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陶瓷负载TiO₂复合材料的制备及光催化降解废水中苯酚的研究[J]. 化工新型材料, 2019, 47(5): 190-192 DOI:

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