【作者】 刘战辉； 张宇； 李昌安； 顾宁； 付德刚；

【Author】 Liu Zhanhui Zhang Yu Li Changan Gu Ning Fu Degang(Key Laboratory of Molecular and Biomolecular Electronics Ministry of Education, Southeast University, Nanjing 210096, China)

【机构】 东南大学分子与生物分子电子学教育部重点实验室；

【摘要】 本文采用溶胶-凝胶法制备了12-磷钨酸复合的TiO2纳米粒子。利用投射电子显微镜(TEM)、紫外-可见吸收光谱(UV/Vis)和傅立叶转换红外光谱(FT-IR)对复合TiO2纳米粒子的形貌、结构和粒径进行了表征。结果表明制备的复合TiO2纳米粒子为近球形,粒径为12-15 nm,表现出量子尺寸效应,12-磷钨酸阴离子保持原有的Keggin结构。对复合TiO2纳米粒子的结构研究表明,复合纳米粒子具有一种类强电解质结构。更多还原

【Abstract】 TiO2 composite nanoparticles were prepared by sol-gel method using tungstophosphate acid as a catalyzer. The morphology, structure and particle sizes of the nanopatticles were characterized by TEM, UV/Vis and FT -IR. The results show that the TiO2 nanoparticles are anatase, the sizes are in the range of 12 - 15 nm and the shape is spherical. The composite nanoparticle proved a salt - likes tructure. The counter anions(PW12O403-)adsorb around the positively charged TiO2 particle as the balance charge. The tungstophosphate ions are kept Keggin structure.更多还原