碳吸附沉淀法Y2O3纳米粉体的制备及其光催化性能的研究
Study on Preparation and Photocatalytic Properties of Y2O3 Nano-powders Supported on Activated Carbon
孙孟佳 1介瑞华 1郭贵宝 1刘少波 1马海腾1
作者信息
- 1. 内蒙古科技大学化学与化工学院,包头014010
- 折叠
摘要
利用碳吸附沉淀法合成Y2O3纳米粉体.采用TG-DTA、XRD、TEM、BET、UV-Vis和粒度分析等测试方法分别对粉体进行了表征.结果表明,750℃下焙烧的Y2O3粉体具有良好的分散状态,晶粒度为16.7 nm,颗粒范围为34～45 nm,比表面积为75.7 m2/g.与氨水直接沉淀制得的Y2O3粉体相比,碳吸附沉淀法制备的Y2O3粉体在紫外光下有良好的光催化活性,80 min内对甲基橙的降解率达78％.
Abstract
Y2O3 nano-powders were synthesized on activated carbon. The obtained materials were characterized by thermo gravimetric-differential thermal analysis ( TG-DTA ) , X-ray diffraction ( XRD) , transmission electron microscopy (TEM) , ultraviolet-visible absorption spectrometry ( UV-Vis) , BET and particle size analysis, respectively. The results showed that Y2O3 calcined at 750 t had optimal dispersion behavior. The crystal size was 16. 7 nm. The particle size was about 35-45 nm and the surface area was 75. 7 mVg. Photocatalytic activity was tested and compared with that of Y2O3 directly deposited by ammonia on the degradation of methyl orange under UV light. Y2O3 synthesized on activated carbon was found to be more active that the degradation of methyl orange could reach 78% in 80 min.
关键词
碳吸附/氧化钇/纳米粉体/光催化Key words
carbon absorption/yttrium oxide/nano-powders/photocatalysis引用本文复制引用
基金项目
内蒙古自治区攻关计划项目(20081505)
内蒙古科技大学产学研合作培育基金资助项目(PY-201110)
出版年
2012
国家科技期刊平台
NSTL
维普
万方数据