摘要
以Ti(SO4)2为前驱物,尿素为沉淀剂,对甲苯磺酰肼为掺杂剂,采用水热沉淀法结合固相反应法制得了锐钛矿相掺氮纳米TiO2粉体。采用XRD对制备的掺氮氧化钛结构进行了表征,以亚甲基蓝为模拟污染物,考察了不同煅烧温度制备的光催化剂在可见光照射下的光催化性能。结果表明,煅烧温度高于120℃时氮可掺进TiO2晶体中,且温度越高,掺氮量越高;煅烧温度为180℃时,氮掺杂TiO2粉体可见光催化活性最强,在波长不低于400nm的可见光作用下,对亚甲基蓝的4h降解率达48.5%。
N-doped TiO2 with anatase crystal structure was prepared by hydrothermal and solid state reaction, using Ti （SO4）2 as precursor, urea as precipitator and P-toluenesulfonylhydrazide as dopant source of Nitrogen. The crystal structure of photocatalysts was characterized by XRD. The photocatalytic degradation of methylence blue was used as model reaction to evaluate the visible light activity of nitrogen-doped TiO2 samples prepared at different calcining temperatures. The results indicate that the nitrogen atom was doped into TiO2 when the calcining temperature was above 120℃, and the doped content of N increased slightly with the calcining temperature increasing. When calcining temperature was 180℃, the sample had the best photocatalytic activity for degradation of methylence blue under visible light of wavelength above 400 nm, and photocatalytic results show that 48.5% methylence blue degraded after 4h reaction.
出处
《中国陶瓷工业》
CAS
2008年第6期1-4,共4页
China Ceramic Industry
关键词
对甲苯磺酰肼
氮掺杂
氧化钛
光催化
p-toluenesulfonylhydrazide, N-doped, TiO2, photocatalysis, visible light
