文献类型：期刊文献

中文题名：氢氧焰燃烧合成纳米二氧化钛颗粒及其分散行为

英文题名：Dispersion Behavior of TiO_2 Nano-particles Synthesized by H_2-O_2 Combustion Flame

作者：王慧婷[1];胡彦杰[1];张玲[1];李春忠[1]

机构：[1]华东理工大学材料科学与工程学院,上海200237

年份：2010

卷号：16

期号：4

起止页码：43

中文期刊名：中国粉体技术

外文期刊名：China Powder Science and Technology

收录：CSTPCD;;北大核心:【北大核心2008】；

基金：国家自然科学基金项目;编号:20706015;50703009;上海科技启明星计划项目;编号:07QA14014;上海市纳米专项;编号:0852nm02000;0952nm02000;上海市曙光学者跟踪计划项目;编号:08GG09;上海市优秀学科带头人计划项目;编号:08XD1401500;上海市重点实验室专项;编号09DZ0202000

语种：中文

中文关键词：纳米二氧化钛;气相燃烧;分散;水性体系

外文关键词：TiO2 nano-particle; flame combustion; dispersion; aqueous solution system

摘要：采用氢氧焰燃烧法合成分散均匀、团聚程度低的纳米TiO2颗粒,采用离子型共聚物改性剂处理制备分散稳定、黏度低的纳米TiO2水性分散体系,借助X射线衍射、比表面积、红外光谱、透射电镜和zeta电位分析等手段,研究纳米TiO2颗粒的晶相、形貌、粒径分布及表面电荷。结果表明:燃烧嘴中心环氢气含量、分散剂用量及pH值对纳米TiO2团聚程度影响较大,当氢气流量控制在1.52 m3/h、水性体系分散剂的质量分数为7.5%、pH控制在8时,纳米TiO2分散性能最佳。
TiO2 nano-particles with low-aggregation were synthesized by H2-O2 combustion flame. A well-dispersed aqueous solution system with low-viscosity was obtained by treating TiO2 nano-particles with ionic copolymer. XRD, specific area, FTIR, TEM, laser particle sizer and zeta potential were utilized to study the crystalline phase, morphology, size distribution and surface charge of TiO2 nano-particles. It was concluded that the hydrogen content of central burner, the mass fraction of dispersant and pH value had great, effect on the degree of aggregation of particles. Under the condition of hydrogen content of 1.52 m^3/h, mass fi＇action of dispersant of 7.5% and the pH value controlled at 8.0, TiO2 nano-particles with the optimal dispersion were obtained.