摘要
用XRD技术研究了不同温度时煅烧二氧化钛(C_(25))纳米微粒的结构特性,并研究了罗丹明B溶液的悬浮体系二氧化钛光催化降解活性.分析了晶粒尺寸、晶相组分和溶液pH值等诸多因素对二氧化钛光催化活性的影响.结果表明,晶相组分、晶粒尺寸和溶液的pH值在一定程度上决定了二氧化钛悬浮体系的光催化效能.发现在煅烧温度为400℃,pH为6.0,光照2 h时催化效果达93.48%.
The photocatalytic activity of Rhodamine-B in TiO_2 suspension systems is studied. The structure of the TiO_2 particles calcinated at different temperatures is characterized by XRD. And we analysed the influence of the grain size of crystaline, the composition of crystaline of different type of TiO_2 and pH values of the Rhdamine-B solution on TiO_2 photocatalytic activation. The result showed that at calcining temperature 400℃, pH=6.0,after 2 hours irradiation, the photocatalytic degradation efficiency is 93.48%.
出处
《延边大学学报(自然科学版)》
CAS
2003年第3期189-193,共5页
Journal of Yanbian University(Natural Science Edition)