Research on Degradation of Aqueous Cr（Ⅵ） and Formaldehyde Simultaneously by TiO2-Zeolite Photocatalytic Materials-中国粉体技术

Journal Online 2015 Vol.21

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Research on Degradation of Aqueous Cr（Ⅵ） and Formaldehyde Simultaneously by TiO2-Zeolite Photocatalytic Materials

HU Xiaolong， SUN Qing， XU Chunhong， ZHENG Shuilin

（School of Chemical and Environmental Engineering， China University of Mining and Technology （Beijing）， Beijing 100083， China）

Abstract： The nano-meter TiO₂ -zeolite composite photocatalytic materials were prepared by the method of hydrolysis precipitation, using TiCl₄as the precursor and zeolite as the carrier. The structure and morphology of the composite materials were characterized by XRD and SEM. The experiments for degradation of aqueous Cr(Ⅵ) and formaldehyde by zeolite coated with TiO₂ were investigated. The results show that the degradation efficiencies of Cr(Ⅵ) and formaldehyde in the coexisting system are higher than those of in single system. There exists coordination degeneration function between Cr（Ⅵ） and formaldehyde.

Keywords: zeolite; nano-meter TiO₂; Cr ion; formaldehyde; degradation

中图分类号：TB332 文献标志码：A

文章编号：1008-5548（2015）05-0069-03

DOI：10.13732/j.issn.1008-5548.2015.05.015

收稿日期：2014-10-20，修回日期：2014-11-03，在线出版时间：2015-10-21。

第一作者简介：胡小龙（1989—），男，硕士研究生，研究方向为非金属矿物材料。 E-mail： 1240023234@qq.com。

通信作者简介：郑水林（1956—），男，教授，博士生导师，研究方向为非金属矿深加工与非金属矿物材料、粉体加工技术。 E-mail：shuilinzh@sina.com。