EDTA对纳米二氧化钛结构及光催化性能的影响  

Influences of EDTA on the Structure and Photocatalytic Activity of Nanometer Titania

作　　者：李纪标[1] 杨懿颖[2] 阎文静[3] 张艳峰[2] 魏雨[2] 

机构地区：[1]河北师范大学实验中心,河北石家庄050016 [2]河北师范大学化学与材料科学学院,河北石家庄050016 [3]河北化工医药职业技术学院化学与环境工程系,河北石家庄050026

出　　处：《河北师范大学学报（自然科学版）》2011年第5期479-482,共4页Journal of Hebei Normal University：Natural Science

基　　金：河北省自然科学基金(2010000360);河北师范大学科研基金(L2009Y11)

摘　　要：以TiCl4为原料、EDTA为添加剂,利用低温陈化法制备了纳米二氧化钛.分别利用X射线衍射、透射电子显微镜、紫外可见光谱对产物进行了表征.以甲基橙为模拟污染物测定了产物的光催化性能.实验结果表明:掺杂EDTA有利于锐钛型TiO2的生成,混合晶型TiO2的光催化性能优于纯锐钛矿相.Nanosized titania powders were prepared by aging at low temperature using TiCl4 as precursors and EDTA as doped sources.The samples were characterized by XRD,TEM and UV-vis.Their photocatalytic activity was investigated by the degradation of methyl orange.The experimental results show that the anatase nanosized titania powders were generated more easily by doped EDTA.Photocatalytic activity of the mix-crystals of rutile and anatase nanosized titania powders was highest and better than photocatalytic activity of anatase nanosized tiania powders.

关 键 词：纳米二氧化钛 光催化 甲基橙 低温陈化法 

分 类 号：O611.4[理学—无机化学] O614.4[理学—化学]