微型反应器法纳米WO_3粉体的合成及表征  

Synthesis and Characterization of WO_3 Nano-Powder Based on Micro-Reactor in Microemuision System

作　　者：侯长军[1] 刁显珍[1] 唐一科[2] 霍丹群[3] 韦立凡[4] 

机构地区：[1]重庆大学光电技术系统教育部重点实验室,四川重庆400030 [2]重庆大学机械传动国家重点实验室,四川重庆400030 [3]重庆大学生物工程学院,四川重庆400030 [4]中国工程物理研究院结构力学研究所,四川绵阳621000

出　　处：《稀有金属材料与工程》2007年第A03期60-63,共4页Rare Metal Materials and Engineering

基　　金：国家"863"计划资助项目(2006AA04z349);重庆市自然科学基金(2006BB7005)

摘　　要：采用微型反应器法,以十六烷基三甲基溴化铵(CTAB)/正丁醇/正辛烷/水构成微乳体系、以钨酸钠和浓盐酸为原料,合成了粒径大小为25～50 nm的WO_3粉体,用X射线衍射仪、透射电子显微镜对WO_3粉体的性能进行了表征。实验结果表明:微乳液体系中含水量大小、煅烧温度和反应物种类都会影响WO_3粉体的粒径、形貌和物相结构;随着含水量的增加,煅烧温度的升高,WO_3粉体的粒径都逐渐增大,形貌也发生了变化;以钨酸铵为反应物合成的WO_3粉体颗粒粒径更小。WO3 nano-powder was synthesized by micro-reactor method in CTAB/n-butyl alcohol/n- octane/H2O microemulsion system using sodium tungstate and hydrochloric acid as reactants. Structure and properties of WO3 nano-powder were characterized by X-ray diffractometer, transmissive electron microscopy and UV-VIS. It is shown that the particle sizes, topography of the particles and phase structures of WO3 nano-powder are changed with moisture content in the microemulsion system, calcination temperatures and different reactants. The sizes of WO3 nano-powder increase with moisture content in the microemulsion system and calcination temperatures increasing. The sizes of WO3 particles obtained from ammonium tungstate as reactant are smaller than that with sodium tungstate as reactant.

关 键 词：微型反应器 微乳液 WO3 纳米粉体 

分 类 号：TB383.3[一般工业技术—材料科学与工程]