Preparation of Polyoxometalate Nanoparticles with Keggin Structure by Solid-state Reaction at Room Temperature

Abstract

Abstract: The polyoxometalate particles with Keggin structure, (NH₄)₃PMo₁₂O₄₀ ·9H₂O(1) and (NH₄)₃PW₁₂O₄₀ ·7H₂O(2), were prepared firstly by solid state reaction at room temperature. Their structure, particle sizes and appearances were characterized with elemental analyses, IR, XRD and TEM techniques. The size distribution of nanoparticle 1 is in the range of 5—14 nm, the mean size is 9 nm, and the size distribution of nanoparticle 2 is in the range of 3—12 nm, the mean size is 6 nm. It was found that the product H₂C₂O₄·2H₂O plays a critical role in preventing the nanoparticles from aggregating to large particles.

Key words: Nanoparticles, Molybdophosphate, Tungstophosphate, Solid state reaction

CLC Number:

O611.4

TrendMD:

YOU Wan-Sheng, WANG Yi-Bo, WANG En-Bo, XU Lin, HU Chang-Wen, XIN Xin, Quan, LI Feng. Preparation of Polyoxometalate Nanoparticles with Keggin Structure by Solid-state Reaction at Room Temperature[J]. Chem. J. Chinese Universities, 2000, 21(11): 1636.

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Preparation of Polyoxometalate Nanoparticles with Keggin Structure by Solid-state Reaction at Room Temperature

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