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Method for preparing cobalt-molybdenum phosphide nano material of hexagonal phase structure

A technology of cobalt molybdenum phosphide and nanomaterials, applied in chemical instruments and methods, phosphides, phosphorus compounds, etc., can solve the problems of product uniformity and low repeatability, and achieve high photocatalytic performance and high experimental repeatability. , the effect of easily controllable reaction conditions

Inactive Publication Date: 2016-03-09
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at this stage, most of the nano-scale CoMoP materials are prepared using the impregnation method, and the uniformity and repeatability of the prepared products are not high. Therefore, how to develop new methods for preparing CoMoP has attracted increasing attention.

Method used

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  • Method for preparing cobalt-molybdenum phosphide nano material of hexagonal phase structure
  • Method for preparing cobalt-molybdenum phosphide nano material of hexagonal phase structure
  • Method for preparing cobalt-molybdenum phosphide nano material of hexagonal phase structure

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Embodiment 1

[0028] A preparation method of cobalt molybdenum phosphide nanomaterial with hexagonal phase structure, comprising the following steps:

[0029] 1) Add 34mL ethylene glycol to 50mL polytetrafluoroethylene liner, then add 0.4365g cobalt nitrate hexahydrate (Co(NO 3 ) 2 ·6H 2 O) and 0.3707g ammonium molybdate tetrahydrate ((NH 4 ) 6 Mo 7 o 24 4H 2 0), then the polytetrafluoroethylene liner is placed on a magnetic stirrer and stirred until the solution is uniform;

[0030] 2) Add 1mL of acetic acid to the PTFE liner and stir until completely dissolved;

[0031] 3) Add 0.1865g of elemental white phosphorus to the polytetrafluoroethylene lining, then seal the polytetrafluoroethylene lining into the reaction kettle, and heat it from room temperature to 200°C under airtight conditions for 18 hours;

[0032] 4) After the reaction is completed, the resulting black precipitate is transferred to a centrifuge tube, washed successively with benzene, water, and absolute ethanol and ...

Embodiment 2

[0034] Embodiment 2: change embodiment 1 step 2) acetic acid into formic acid, other conditions are constant, hexagonal phase structure cobalt molybdenum phosphide (CoMoP) is 88% and 82% to the degradation rate of material sangrin T, basic fuchsin .

Embodiment 3

[0035] Embodiment 3: change embodiment 1 step 2) acetic acid into propionic acid, other conditions are constant, hexagonal phase structure cobalt molybdenum phosphide (CoMoP) is 89% and 80% to the degradation rate of material sangrin T, basic fuchsin %.

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Abstract

The invention discloses a method for preparing a cobalt-molybdenum phosphide nano material of the hexagonal phase structure. The method includes the steps that ethylene glycol is added into a polytetrafluoroethylene lining, then soluble cobalt salt and soluble molybdenum salt are added, and afterwards, the polytetrafluoroethylene lining is placed on a magnetic stirrer to be stirred till liquor is uniform; then organic acid is added into the polytetrafluoroethylene lining to be stirred till the organic acid is completely and evenly dissolved; afterwards, elemental phosphorus is added into the polytetrafluoroethylene lining, then the polytetrafluoroethylene lining is sealed in a reaction kettle to begin to be heated to 100-200 DEG C from an indoor temperature under the sealed condition, and the heating process continues for 1-24 hours; after reacting is completed, obtained black precipitate is transferred to a centrifuge tube, and washed by benzene, water and absolute ethyl alcohol in sequence and centrifuged; the washed product is placed in a vacuum drying oven, and accordingly the cobalt-molybdenum phosphide (CoMoP) of the hexagonal phase structure can be obtained. The prepared CoMoP of the hexagonal phase structure is of the hexagonal phase structure and has the advantages of being high in photocatalytic performance, high in experimental repeatability and capable of controlling the reaction condition easily.

Description

technical field [0001] The invention belongs to the technical field of preparation of inorganic nanomaterials, and in particular relates to a preparation method of cobalt-molybdenum phosphide nanomaterials with a hexagonal phase structure. Background technique [0002] While continuously improving the traditional photocatalysts, the research on new photocatalysts with different active phases has made great progress, and many new catalytic materials have emerged, including transition metal nitrides, carbides, phosphides, borides, non- Crystalline alloys, ionic liquids, and nanomolecular sieves, etc. In particular, transition metal phosphides have been proven to be effective catalysts. The interstitial filling of non-metallic element phosphorus changes the structure of the metal and the electronic structure of the outer layer on a microscopic level, thereby changing its physical and chemical properties. It is used in many hydrogen-related reactions. exhibited excellent cataly...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B25/08B82Y40/00
CPCC01B25/088C01P2002/72C01P2004/03C01P2004/04C01P2004/64C01P2006/90
Inventor 刘淑玲付香杰仝建波程芳玲杨军胜
Owner SHAANXI UNIV OF SCI & TECH
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