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钼钨磷混配杂多酸铵纳米微粒的固相合成与表征

Solid State Synthesis and Characteristies of （NH₄）₃PW₆Mo₆O₄₀·8H₂O Nanoparticle

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【Author】 SHI Xiao-bo~(1,2),WANG Guo-ping~3,LI Chun-gen~1,WANG De-xian~1 (1.Insititute of Chemistry,Jiangxi Normal University,Nanchang 330027,China;2.Department of Chemistry,Zhanjiang Normal College,Zhanjiang 524048,China;3. School of Materials Science and Engineering,Hefei University of Technology,Hefei 230009,China)

【机构】江西师范大学化学学院；合肥工业大学材料科学与工程学院；江西师范大学化学学院江西南昌330027；湛江师范学院化学系；广东湛江　524048；安徽合肥230009；江西南昌330027；江西南昌330027；

【摘要】采用室温固相反应法合成了钼钨磷混配杂多酸铵(NH4)3PW6Mo6O40·8H2O产物,用元素分析确定了分子组成,其结构、性质、颗粒大小、表面形状分别用红外光谱、X-射线粉末衍射、透射电镜、热分析和比表面积测试等手段进行了研究.结果表明:产物为Keggin结构的纳米粒子,平均粒径为12nm,比表面积为134.2m2·g-1,形成纳米微粒后,杂多阴离子的热稳定性有所下降.更多还原

【Abstract】 The polyoxometate particle （NH₄）₃PW₆Mo₆O₄₀·8H₂O were synthesized by solid-state reaction at room temperature. Their structure, particle size, thermal properties and surface nature were characterized with elemental analyses, IR, XRD, TEM, TG-DTA and BET techniques. The results show that the polyoxometate particle （NH₄）₃PW₆Mo₆O₄₀ are found to exhibit Keggin structure, have a surface area of 134.2 m²·g^-1, the mean grain size is 12 nm,the stability of the hetoropoly anion decreased when nanoparticles were formed.更多还原