| pH值与温度对WO_3纳米粉体制备的影响 |
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| 引用本文： | 王新刚,张怀龙,时斌,李文静,刘丽丽.pH值与温度对WO_3纳米粉体制备的影响[J].中国钨业,2014(2):19-23. |
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| 作者姓名： | 王新刚 张怀龙 时斌 李文静 刘丽丽 |
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| 作者单位： | 长安大学材料科学与工程学院,陕西西安710061 |
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| 基金项目： | 国家自然科学基金资助（51177006） |
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| 摘 要： | 以偏钨酸铵(AMT)、柠檬酸(CA)、乙二醇(EG)为原料,用溶胶-凝胶法制备了纳米WO3粉体。通过热重-差热分析(TG-DSC)、X射线衍射(XRD)、场发射扫描电子显微镜(SEM)、透射电子显微镜(TEM)、红外分析仪(FTIR)、比表面积测试(BET)等分析测试手段对粉体的结构、颗粒形貌和粒径进行表征,重点研究了pH值以及焙烧温度对粒径及形貌的影响。结果表明:当pH=1时,所制备出的WO3粉体呈多面体或球状,颗粒间的团聚较弱,在600℃烧结制备出的WO3粉体颗粒大小均匀,其平均粒径为40 nm左右。
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| 关 键 词： | 三氧化钨 偏钨酸铵 溶胶凝胶 螯合反应 |
Effects of pH Value and Temperature on Producing WO 3 Nano-Powders |
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| WANG Xin-gang,ZHANG Huai-long,SHI Bin,LI Wen-jing,LIU Li-li.Effects of pH Value and Temperature on Producing WO 3 Nano-Powders[J].China Tungsten Industry,2014(2):19-23. |
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| Authors: | WANG Xin-gang ZHANG Huai-long SHI Bin LI Wen-jing LIU Li-li |
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| Affiliation: | (School of Materials Science ＆ Engineering, Chang＇an Univerisity, Xi＇an 710061, Shaanxi, China) |
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| Abstract: | The tungsten trioxide was prepared by the sol-gel method with Ammonium metatungstate ,citric acid and glycol as raw materials. The phase composition, morphology and particle size of powders were analyzed by TG-DSC, XRD, FT-IR, SEM, TEM and BET. The effects of pH value and temperature on the particle size and morphology were mainly studied. The results show that the particle of WO 3 powder are polyhedron or spherical with weak aggolomerate between particles when the pH of sol solution is 1. After sintered at 600 ℃, the particle size of WO3 powder with average size of 40 nm is uniform. |
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| Keywords: | tungsten trioxide AMT sol-gel chelation reaction |
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