Rhombic hollow dodecahedron potassium phosphate noncrystal and synthesis method thereof

A rhomboid dodecahedron and nanocrystal technology, which is applied in the field of preparation of visible light catalytic materials, can solve the problems of complex preparation methods and high raw material costs, and achieve the effect of effectively degrading dye pollutants

Inactive Publication Date: 2017-05-24
YANGZHOU UNIV
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Problems solved by technology

Patent CN200910306562.8 introduces a visible light catalyst silver phosphate and its preparation method, but the preparation method of this ma...

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  • Rhombic hollow dodecahedron potassium phosphate noncrystal and synthesis method thereof
  • Rhombic hollow dodecahedron potassium phosphate noncrystal and synthesis method thereof
  • Rhombic hollow dodecahedron potassium phosphate noncrystal and synthesis method thereof

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Embodiment Construction

[0026] 1. Preparation of rhombohedral hollow dodecahedral potassium phosphate nanocrystals.

[0027] (1) Weigh 150mg of KNO 3 , K 2 SO 4 Or KCl and 120~300mg of H 3 o 40 PW 12 ·xH 2 O, add deionized water and place it in a polytetrafluoroethylene reactor, and stir evenly.

[0028] (2) Seal the above reaction kettle, add a stainless steel reaction kettle shell, and place it in an oven at 120-180°C for 5-20 hours.

[0029] (3) The obtained precipitate was washed several times with deionized water and absolute ethanol, and then dried naturally at room temperature to obtain about 300 mg rhombohedral hollow dodecahedral potassium phosphate nanocrystals.

[0030] figure 1 The X-ray powder diffraction pattern of the obtained rhombohedral hollow dodecahedral potassium phosphate nanocrystals is shown. From figure 1 It can be seen that the characteristic peaks in the spectrum almost completely match the characteristic peaks of the standard potassium phosphotungstate crystal, w...

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Abstract

The invention provides a rhombic hollow dodecahedron potassium phosphate noncrystal and a synthesis method thereof and belongs to the technical field of preparation of visible light catalysis materials. The synthesis method comprises the following steps: mixing sylvite with phospho-wolframic acid to perform a hydrothermal reaction by virtue of taking de-ionized water as a solvent; and taking a precipitate, washing the precipitate with the de-ionized water and absolute ethyl alcohol, and drying the washed precipitate, thereby obtaining the rhombic hollow dodecahedron potassium phosphate noncrystal. By use of a simple and convenient method, rhombic hollow dodecahedron potassium phosphate nancrystal is synthetized by one step under mild conditions, so that uniform-appearance hollow rhombic dodecahedron nanocrystal is obtained. The nanocrystal has a unique hollow rhombic dodecahedral special structure; by virtue of nano pores, the capability of effectively degrading dye pollutants is displayed; after being irradiated by visible light for 90 minutes, the rhombic hollow dodecahedron potassium phosphate noncrystal has the capability of effectively degrading dye pollutants and nearly completely degrading RhB, and can be repeatedly used for multiple use.

Description

technical field [0001] The invention belongs to the technical field of preparation of visible light catalytic materials. Background technique [0002] In recent years, controllable synthesis of inorganic materials has attracted extensive attention because their unique shape and size determine their properties. Therefore, chemical synthesis is widely used in directional synthesis and self-assembly of advanced micro-nano structures, such as: biomimetic technology or the use of specific surfactants to assist in the controllable synthesis of micro-nano materials. Although the existing synthetic methods have synthesized many excellent morphologies, the formation mechanisms of many micro- and nanomaterials are still lacking in-depth understanding and discussion. [0003] Polyoxometalates (POMs) metal-oxyanion clusters and complexes. POMs combined with appropriate counter cations usually form solid-state materials, and these solid-state materials have certain applications in diff...

Claims

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Application Information

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IPC IPC(8): C01B25/30B82Y40/00B01J27/18
CPCC01B25/30B01J27/1806B01J35/023B01J35/026C01P2002/72C01P2004/03C01P2004/04C01P2004/62
Inventor 庞欢李欣冉肖潇魏积蕾邵瑾莹
Owner YANGZHOU UNIV
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