摘要
采用溶胶 凝胶法制备了掺杂铁的TiO2 粉末 ,并用XRD、SEM、UV Vis漫反射光谱等技术手段考察了掺入铁TiO2 粒子形态的变化 ,以及掺杂与否对氧化降解NO-2 的影响 .研究结果表明 ,铁的掺入可影响TiO2 的结构相变及粒子大小 ,并且发现掺杂后TiO2 对NO-2 的氧化活性显著提高 ,在掺杂量 3 0 %时具有最佳活性 .
The iron\|doped titania catalysts were prepared by sol\|gel method, and characterized by XRD, UV\|Vis diffuse reflection spectra. Their photocatalytic activities were tested by degradation of nitrite.The results indicated that the iron\|doped samples cause changes in crystalline phase and particle sizes of the titania. Samples containing low amount of iron (3 0%) were more effective for nitrite oxidation than pure TiO\-2.
出处
《中山大学学报（自然科学版）》
CAS
CSCD
北大核心
2000年第5期44-48,共5页
Acta Scientiarum Naturalium Universitatis Sunyatseni
基金
国家教育部博士点科研基金资助项目!(970 5580 7)
关键词
铁
掺杂
溶胶-凝胶法
光降解
二氧化钛
亚硝酸根
TiO\-2
iron\|doped titania
sol\|gel method
photocatalysis
nitrite oxidation
