TiO2/Fe-TiO2复合材料的制备及其对甲醛降解性能的

关键字：TiO2,Fe-TiO2,复合材料,的,制备,及其,对,甲醛

（1.河南建筑材料研究设计院有限责任公司，河南 郑州  450002；2.天津城建大学，天津  300384）
 

    摘要：采用水热合成法制备纯TiO2和Fe-TiO2光催化材料，然后将n型TiO2半导体与p型Fe-TiO2半导体复合，制备出具有p-n结的TiO2/Fe-TiO2复合光催化材料。实验表明，当铁掺杂量为0.5%（Fe/Ti摩尔比），制备的TiO2/Fe-TiO2光催化材料对甲醛降解性能最佳，其禁带宽度为3.02 eV，在甲醛浓度为0.08 mg/m3的环境条件下进行测试，紫外光照射3 h对甲醛气体的降解率达到30.3%。

    关键词：TiO2；TiO2/Fe-TiO2；光催化剂；降解甲醛性能

    中图分类号：TU599；TU834.3+9        文献标识码：A        文章编号：1001-702X（2018）06-0067-04

 

Preparation of TiO2/Fe-TiO2 composites and performances of degradation for formaldehyde

ZHANG Maoliang1，YANG Yanjuan1，BAI Zhaojun1，WAN Xindi1，WANG Jinhua1，LI Jianwei1，

LI Xiaonan1，YANG Ningning2

（1.Henan Building Materials Research and Design Institute Co. Ltd.，Zhengzhou 450002，China；

2.Tianjin Chengjian University，Tianjin 300384，China）

  Abstract：TiO2 and Fe-TiO2 photo-catalyst material were made by using hydro-thermal synthetic technique，p-n junction photo-catalyst of TiO2/Fe-TiO2 were prepared by compounding n-type TiO2 respectively with Fe-TiO2 semiconductor. It is shown that when iron ratio is 0.5%（Fe/Ti molar ratio），TiO2/Fe-TiO2 photocatalyst material achieves the best formaldehyde degradation performance and its energy gap is 3.02 eV. What's more，when formaldehyde concentration is 0.08 mg/m3，the degradation rate of formaldehyde gas that has been irradiated by ultraviolet for 3 hours is 30.3%.

    Key words：TiO2，TiO2/Fe-TiO2，photo-catalyst，formaldehyde degradation performance