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Citation: Zhou Li-Qun, Liu Shi-Zhong, Yu Guo-Feng, Sun Ju-Tang. Preparation and Formation Mechanism of the (NH₄)₃PMo₆W₆O₄₀ Nanoparticles by Solid State Reaction at Room Temperature[J]. Acta Physico-Chimica Sinica, ;2003, 19(08): 733-736. doi: 10.3866/PKU.WHXB20030812 shu

Preparation and Formation Mechanism of the (NH₄)₃PMo₆W₆O₄₀ Nanoparticles by Solid State Reaction at Room Temperature

1.
Faculty of Chemistry and Material Science, Hubei University, Wuhan　430062; 1Department of Chemistry, Xiaogan College, Xiaogan　432100; 2College of Chemistry and Molecular Science, Wuhan University, Wuhan　430072

Received Date: 21 January 2003
Available Online: 15 August 2003

(NH4)3PMo6W6O40 nanoparticles were synthesized by the solid state reaction of H3PMo6W6O40•23H2O with (NH4)2C2O4•H2O at room temperature. Its structure, particle size and appearance were characterized with elemental analysis, IR, UV-Vis, XRD, TEM, TG-DTA and BET techniques. The results show that (NH4)3PMo6W6O40 nanoparticles are found to exhibit Keggin structure, have a surface area of 167.6 m2•g－1, below 465 ℃, the nanoparticles have a higher thermal stability, the mean grain size is of the value of 10 nm. In this solid state reaction, grinding and reaction thermal energy can accelerate the speed of reactant diffusion and product nucleation and decrease the particle′s size, water of crystallization of reactants and product H2C2O4•2H2O play a key role of forming the small size (NH4)3PMo6W6O40 nanoparticles.
- (NH₄)₃PMo₆W₆O₄₀;Nanoparticles;Solid state reaction at room temperature;Mechanism
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Preparation and Formation Mechanism of the (NH4)3PMo6W6O40 Nanoparticles by Solid State Reaction at Room Temperature

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通讯作者: 陈斌, bchen63@163.com

Preparation and Formation Mechanism of the (NH₄)₃PMo₆W₆O₄₀ Nanoparticles by Solid State Reaction at Room Temperature