【作者】 李志杰； 侯博； 徐耀； 吴东； 孙予罕；

【Author】 LI Zhi-jie, HOU Bo, XUYao, WU Dong, SUN Yu-han( State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan, Shanxi 030001, China; Graduate School of The Chinese Academy of Sciences, Beijing 100039, China)

【机构】 中国科学院山西煤炭化学研究所煤转化国家重点实验室；

【摘要】 采用溶胶-凝胶法制备二氧化钛纳米颗粒,然后进行了氧化铝包膜.对样品进行了TEM,XRD,XPS,ICP和BET表面积表征,结果表明二氧化钛纳米颗粒大小的40 nm左右,表现出良好的分散性.氧化铝有效的包膜在二氧化钛表面,并且在氧化硅和氧化铝之间通过Ti-O-Al键合.氧化铝包膜有效的降低了二氧化钛颗粒的光催化活性.更多还原

【Abstract】 Titanium dioxide nanoparticles were prepared by sol-gel method, which were coated by Al2O3. The structure, morphology and surface element composition of samples were characterized by XRD, TEM, XPS, ICP and N2 physisorption techniques, respectively. The results showed that the particle size of TiO2 nanoparticles was around 40 nm and A12O3 could be effectively coated on its surface with Ti-O-Al bonds formed on the TiO2 particle surface. The Al2O3-coated TiO2 nanoparticles had good dispersibility compared with the uncoated TiO2 nanoparticles. The coating of Al2O3 could effectively suppress the photocatalytic activity of TiO2 nanoparticles.更多还原