期刊论文

中文

应用化工

1671-3206

2009

38

1

32-34

10.16581/j.cnki.issn1671-3206.2009.01.041

湖南省自然科学基金项目资助（06JJ4011）； 衡阳市科技局项目资助（2007KS03）；

本校为第一机构

采用共沉淀-浸渍法制备掺杂S的TiO_2光催化剂,利用XRD,TEM,UV-Vis-DRs,XPS等方法对其结构、元素组成和光谱学特征进行研究,以亚甲基蓝(MB)的光催化降解反应为模型,探讨高效利用可见光降解亚甲基蓝的反应体系.实验结果表明,S掺杂最佳热处理温度为500 ℃.掺杂光催化剂晶型仍为锐钛矿型,其粒径变小,比表面积增大,热稳定性增加,对可见光的吸收增强.超声波对光催化降解反应有协同作用,S/TiO_2在可见光下对亚甲基蓝的降解率明显高于纯TiO_2.

S Doped TiO2 nanoparticles were successfully synthesized by coprecipitation-impregnation method. The characteristics of spectroscopy, elemental composition and crystal structure were investigated by XPS, UV-Vis-DRs,TEM and XRD. Using the reaction of photocatalytic degradation of methylene blue （MB） as a model reaction, its reaction system was investigated utilizing visible light effectively. Experimental results indicate that the optimized heat treatment temperature of S doping is 500 ℃. Compared to TiO2, the crystal form of the S doped TiO2...