化工进展 ›› 2016, Vol. 35 ›› Issue (05): 1519-1523.DOI: 10.16085/j.issn.1000-6613.2016.05.038

• 资源与环境化工 • 上一篇    下一篇

纳米TiO2/沸石复合材料光催化降解苯酚的性能

胡小龙, 孙青, 徐春宏, 郑水林   

  1. 中国矿业大学(北京)化学与环境工程学院, 北京 100083
  • 收稿日期:2015-08-18 修回日期:2015-10-17 出版日期:2016-05-05 发布日期:2016-05-05
  • 通讯作者: 郑水林,教授,博士生导师,研究方向为资源综合利用与非金属矿深加工、粉体加工与矿物材料制备技术。E-mail shuilinzh@sina.com。
  • 作者简介:胡小龙(1989-),男,硕士研究生,研究方向为非金属矿物材料。E-mail 13126830223@163.com。

Photocatalytic degradation of phenol with nano-TiO2/zeolite composite material

HU Xiaolong, SUN Qing, XU Chunhong, ZHENG Shuilin   

  1. School of Chemical and Environment Engineering, China University of Mining and Technology-Beijing, Beijing 100083, China
  • Received:2015-08-18 Revised:2015-10-17 Online:2016-05-05 Published:2016-05-05

摘要: 苯酚是一种较难处理的有毒有机污染物。本文以TiOSO4为钛源,尿素为沉淀剂,沸石为载体,采用均匀沉淀法制备了纳米TiO2/沸石复合材料,并以苯酚作为降解对象,研究了不同TiO2负载量、煅烧温度以及重复使用对纳米TiO2/沸石复合材料的光催化降解苯酚性能的影响。结果表明:TiO2负载量为30%、煅烧晶化温度为650℃时,经300W高压汞灯照射3.5h,纳米TiO2/沸石复合材料对20mg/L苯酚溶液的光催化降解率达到91.6%;重复使用5次仍对苯酚溶液具有85%的光催化降解率。

关键词: 沸石, 纳米二氧化钛, 苯酚, 催化作用

Abstract: Phenol is a toxic organic pollutants and difficult to treat. Using TiOSO4 as titanium source, urea as the precipitator, and zeolite as the carrier, we had prepared the nano-TiO2/zeolite material by homogeneous precipitation method. The effect of TiO2 loading amount, calcination temperature and the reusabiity on photocatalytic degradation of phenol were investigated by taking phenol as the degradation target. The results showed that the nano-TiO2/zeolite material with 30% TiO2 loaded, and calcined at 650℃ exhibited the best photocatalytic performance. The degradation efficiency of nano-TiO2/zeolite material towards phenol (20mg/L) was 91.6% when irradiated for 3.5h under 300W high pressure mercury lamp and the catalyst after five cycles still demonstrated excellent photocatalytic performance of 85 % of the photocatalytic degradation rate of phenol.

Key words: zeolite, nano-TiO2, phenol, catalysis

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