东南大学学报（自然科学版）2012，Vol.42Issue(4)：680-684,5.DOI:10.3969/j.issn.1001-0505.2012.04.020
超声波强化均匀沉淀法制备纳米TiO2
Preparation of nano-TiO2 by homogeneous precipitation intensified with ultrasound
摘要
Abstract
In order to improve the dispersion of nano-TiO2 and to reduce the particle size, nano-TiO2 were synthesized by homogeneous precipitation intensified with ultrasound. Industrial grade TiOSO4 was used as raw material to synthesize nano-TiO2 by homogeneous precipitation. The effect of ultrasound on the fabrication of nano-TiO2 was studied by comparison tests. The characterization of nano-TiO2 was investigated by the BET surface area and porosity analysis, scanning electron microscope, transmission electron microscope, and X-ray diffraction analysis. The results show that the role of ultrasound can reduce the particle size significantly. Also it can increase the surface area, pore volume and pore size of nano-TiO2, and improve the dispersion properties and particle size distribution. Anatase nano-TiO2 can be obtained directly by the homogeneous precipitation process without specific calcine steps. And ultrasonic treatment does not change anatase crystal of the nano-TiO2 samples.关键词
SCR催化剂/超声波/均匀沉淀/纳米TiO2Key words
selective catalytic reduction (SCR) catalyst/ ultrasound/ homogeneous precipitation/ nano-TiO2分类
资源环境引用本文复制引用
张茜芸,仲兆平,姚杰..超声波强化均匀沉淀法制备纳米TiO2[J].东南大学学报（自然科学版）,2012,42(4):680-684,5.基金项目
国家高技术研究发展计划(863计划)资助项目(2008AA05Z303)、江苏省科技支撑计划资助项目(BE2010184)、江苏省环保科研课题资助项目(201031). （863计划）
