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Molybdenum phosphide nanometer material and preparation method and application thereof

A nanomaterial, molybdenum phosphide technology, applied in chemical instruments and methods, phosphide, nanotechnology, etc., can solve the problems of cumbersome experimental steps of molybdenum phosphide catalyst, not suitable for the application of electrolysis of water for hydrogen production, etc.

Pending Publication Date: 2020-01-14
THE NAT CENT FOR NANOSCI & TECH NCNST OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] However, the experimental steps of the molybdenum phosphide catalyst obtained by the above method are cumbersome and are not suitable for the application of hydrogen production by electrolysis of water.

Method used

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  • Molybdenum phosphide nanometer material and preparation method and application thereof
  • Molybdenum phosphide nanometer material and preparation method and application thereof
  • Molybdenum phosphide nanometer material and preparation method and application thereof

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Embodiment 1

[0069] The present embodiment provides a kind of preparation method of molybdenum phosphide nano material, and its specific method is:

[0070] (1') get the molybdenum sheet that purity is 99%, adopt acetone and ethanol to clean respectively 15 minutes successively, and rinse with deionized water, dry under nitrogen environment, obtain the molybdenum sheet of purification;

[0071] (1) will contain NH 4 Add glycerol to the aqueous solution of F, and stir well. where NH 4 F is 4.0g (concentration is 0.36mol / L), and the volume of deionized water is 30ml, and the volume of glycerol is 270ml; With above-mentioned solution as electrolytic solution, the molybdenum sheet with step (1') purification is as anode, and Pt electrode is as Cathode, apply a voltage of 40V to both ends of the cathode and anode, and energize for 1h to obtain electrolyzed molybdenum;

[0072] (2) heating the electrolyzed molybdenum described in step (1) at 350° C. for 90 minutes in an inert gas environment ...

Embodiment 2

[0079] The present embodiment provides a kind of preparation method of molybdenum phosphide nano material, and its specific method is:

[0080] (1') get the molybdenum sheet that purity is 99%, use acetone as cleaning agent in ultrasonic cleaning device ultrasonic cleaning 15 minutes, then use dehydrated alcohol as cleaning agent in ultrasonic cleaning device ultrasonic cleaning 15 minutes, and use deionized water Rinse, dry under nitrogen environment, obtain the molybdenum flake of purification;

[0081] (1) NH contained after 4 Add glycerol to the F aqueous solution and stir well. where NH 4 F is 4.0g (concentration is 0.36mol / L), and the volume of deionized water is 30ml, and the volume of glycerol is 270ml; With above-mentioned solution as electrolytic solution, the molybdenum plate with step (1') purification is as anode, and Pt electrode is as Cathode, apply a voltage of 35V to both ends of the cathode and anode, and energize for 1h to obtain electrolyzed molybdenum; ...

Embodiment 3

[0087] The present embodiment provides a kind of preparation method of molybdenum phosphide nano material, and its specific method is:

[0088](1 ') get the molybdenum sheet that purity is 99%, use acetone as cleaning agent in ultrasonic cleaning device 50kHz ultrasonic cleaning 25 minutes, then use dehydrated alcohol as cleaning agent in ultrasonic cleaning device 100kHz ultrasonic cleaning 25 minutes, and use Rinse with ionized water, dry under nitrogen environment, and obtain purified molybdenum flakes;

[0089] (1) will contain NH 4 Add glycerol to the F aqueous solution and stir well. where NH 4 F is 4.5g (concentration is 0.41mol / L), and the volume of deionized water is 45ml, and the volume of glycerol is 255ml; With above-mentioned solution as electrolytic solution, the molybdenum plate with step (1') purification is as anode, and Pt electrode is as Cathode, apply a voltage of 40V to both ends of the cathode and anode, and energize for 0.5h to obtain electrolyzed mol...

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Abstract

The invention provides a molybdenum phosphide nanometer material and a preparation method and application thereof. The molybdenum phosphide nanometer material comprises an array composed of molybdenumphosphide nanotubes. The preparation method comprises the following steps: (1) using a molybdenum raw material as an anode, electrolyzing the molybdenum raw material with a cathode in an electrolytecontaining ammonium fluoride to obtain electrolyzed molybdenum, wherein the solvent in the electrolyte of ammonium fluoride contains glycerol; (2) heating the electrolyzed molybdenum in the step (1) in an inert gas environment to obtain modified molybdenum; (3) mixing the modified molybdenum in the step (2) with a phosphorus source, and carrying out heating reaction to obtain the molybdenum phosphide nanometer material. The molybdenum phosphide nanometer material serves as a catalyst in the field of electrocatalysis. The molybdenum phosphide nanometer material provided by the invention has novel morphology, a large specific surface area, a plurality of active sites and excellent catalytic performance; and the preparation method provided by the invention has the advantages of simple operation, short process, low cost and good industrial production prospect.

Description

technical field [0001] The invention relates to the field of nanomaterial preparation methods, in particular to a molybdenum phosphide nanomaterial and its preparation method and application. Background technique [0002] Energy is an important basis for human survival and development. However, with the depletion of non-renewable energy sources, human demand for renewable clean energy is increasing. Hydrogen has attracted widespread attention due to its cleanliness and pollution-free nature. Among various hydrogen production methods, hydrogen production by electrolysis of water is one of the important means at present. However, electrocatalysts with high catalytic activity are usually required in this process. Metal phosphides have excellent thermal conductivity and thermodynamic stability, so they are widely used in lithium batteries, electronic materials, medical treatment and catalysts and other fields. In the literature reported so far, the preparation of molybdenum ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25B11/06C25B1/04B82Y40/00C25C1/06C01B25/08B01J27/19
CPCB01J27/19B82Y40/00C01B25/08C25B1/04C25B11/04C25C1/06Y02E60/36Y02P10/20
Inventor 朴玲钰于海宁曹爽吴志娇伏兵
Owner THE NAT CENT FOR NANOSCI & TECH NCNST OF CHINA