N、S共掺杂型二氧化钛光催化降解有机污染物的性能研究  

Photo Catalytic Activity for Degradation of Organic Dye of N,S-codoped TiO2 Nanoparticles

作　　者：吕英英[1,2] 顾晓天[1] 周家宏[1] 黄鹤勇[1,2] 冯玉英[1] 

机构地区：[1]南京师范大学分析测试中心,江苏省生物功能材料重点实验室,江苏南京210097 [2]南京师范大学化学与环境科学学院,江苏南京210097

出　　处：《南京师大学报（自然科学版）》2008年第4期69-73,共5页Journal of Nanjing Normal University(Natural Science Edition)

基　　金：国家自然科学基金(20603018);江苏省科技发展计划(BM2007132)资助项目

摘　　要：用自制N、S共掺杂的TiO2纳米粉体降解亚甲基兰溶液,同未掺杂、单掺N或单掺S的TiO2纳米粉体做了比较,系统地研究了影响TiO2降解亚甲基兰溶液的因素.结果显示,无论是太阳光还是紫外光照射下,N、S共掺杂的TiO2纳米粉体具有比其它三种光催化剂更好的催化效果,并且发现在煅烧温度为450℃、亚甲基兰溶液的pH值为中性条件下,N、S共掺杂的TiO2纳米粉体降解效果达到最佳.The organic contaminant, methylene blue （MB） was degradated by N, S-codoped TiO2 nano-particles under mercury lamp or solar light irradiation, whose degradation rate was compared with undoped, N-doped, and S-doped TiO2. As a result, N, S-codoped TiO2 photocatalyst showed marked synergic effect and better photocatalytic activity than other three kinds of photocatalyst. And the photocatalytic activity of N, S-codoped TiO2 nano-particle was evaluated systematically including the different pH values of methylene blue solution and the different calcined temperature of photocatalyst. It was found that when the pH value of methylene blue solution was 7 and the calcined temperature of photocatalyst was 450℃, N, S-codoped TiO2 owned optimal degradation rate.

关 键 词：掺杂 光降解 亚甲基兰 太阳光 

分 类 号：TB383[一般工业技术—材料科学与工程]