摘要
本文以甘油为结构导向剂,运用水热合成法制备了介孔二氧化钛粉体(MT),采用抽提和焙烧两种方法除去结构导向剂。分别对合成的样品、P25和商品TiO2粉末(PT)进行了XRD、TEM、TGA、N2等温吸附—脱附等实验表征,根据TGA计算了样品的表面羟基密度。研究了样品光催化降解甲基橙效率与其表面性质的关系。结果表明,经焙烧除去结构导向剂的样品的比表面最高,达285.3m2.g-1,孔径4nm^6nm,具有良好的光催化降解甲基橙性能。
The mesoporous TiO2 power was synthesized using a nonsurfactant glycerol as a structure - directing agent by hydrothermal methods. The obtained products, P25 and TiO2 commodity of product were characterized by XRD ,TEM ,TGA,N2 adsorption method. The density of surface hydroxyl of titania powers was calculated using the TGA weight loss and the surface area. We also studied the relationship between the density of surface hydroxyl and its photo catalytic activity in the degradation of methyl orange. It was found that the surface area of MT2 was highest, ca. 285.3m2·g^-1 and the pore diameter was 4nm - 6nm Its photo catalytic activity was good.
出处
《化学研究与应用》
CAS
CSCD
北大核心
2005年第5期592-595,共4页
Chemical Research and Application
基金
江苏省自然科学基金(BK2002100)资助项目
江苏省教委自然科学基金(03KJD150051)资助项目
关键词
介孔TIO2
表面羟基密度
表征
光催化降解
mesoporous TiO2
density of surface hydroxyl
characterization
photo - catalytic degradation
