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Preparation method of black phosphorus graphene composite material-loaded noble metal nanoparticles

A technology of graphene nanosheets and composite materials, which is applied in the field of materials science, can solve the problems of high price and low catalytic activity of catalysts, achieve the effect of simple and clear preparation process, and improve electrochemical activity and stability

Active Publication Date: 2017-09-15
SHANGHAI UNIVERSITY OF ELECTRIC POWER
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Problems solved by technology

[0003] Aiming at the above-mentioned technical problems existing in catalysts in the prior art, the present invention provides a method for preparing black phosphorus graphene composite material loaded noble metal nanoparticles, the preparation of the new black phosphorus graphene composite material loaded noble metal nanoparticles The method is to solve the technical problems of low catalytic activity and high price of direct alcohol fuel cell catalysts in the prior art

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  • Preparation method of black phosphorus graphene composite material-loaded noble metal nanoparticles
  • Preparation method of black phosphorus graphene composite material-loaded noble metal nanoparticles
  • Preparation method of black phosphorus graphene composite material-loaded noble metal nanoparticles

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Embodiment 1

[0024] A preparation method of black phosphorus graphene composite material loaded noble metal nanoparticles, specifically comprising the following steps:

[0025] (1) Preparation of black phosphorus graphene composites

[0026] ① Preparation of black phosphorus: Add 2g of red phosphorus and 15mL of ultrapure water into a 25mL hydrothermal kettle at room temperature, and steam at 200°C for 12 hours to remove the oxide layer on the surface of red phosphorus. Then take it out and dry it, grind it with an agate mortar for 0.5-1h, and then perform mechanical ball milling on the multi-layer black phosphorus precursor under normal temperature and pressure with argon protection, ball milling for 24-48h, and keep the rotation speed at 500r / min. Black phosphorus is obtained after mechanical ball milling.

[0027] ② Activation method of graphene: Soak graphene in 6 M potassium hydroxide solution for 12 h, centrifuge the obtained sample with deionized water and absolute ethanol, and the...

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Abstract

The invention provides a preparation method of black phosphorus graphene composite material-loaded noble metal nanoparticles. The method comprises the following steps: firstly, preparing a black phosphorus graphene composite material: carrying out ball-milling on a black phosphorus nanometer lamellar material and a graphene nanometer lamellar material under the protection of argon, then respectively washing products with ethanol and water, carrying out suction filtration to obtain the black phosphorus graphene composite material, carrying out vacuum drying on the obtained black phosphorus graphene composite material, and collecting; then, dispersing the black phosphorus graphene composite material into ethanol, carrying out ultrasonic treatment and then adding a stabilizer and a metal precursor; continuously carrying out ultrasonic agitation, adjusting a pH value to 9-11, then adding a reducing agent, continuously stirring, and carrying out vacuum drying to obtain the black phosphorus graphene composite material-loaded noble metal nanoparticles. According to the black phosphorus graphene composite material-loaded noble metal nanoparticles, a black phosphorus graphene composite material carrier is better combined with noble metal, so that the electro-chemical activity and stability of a fuel-cell catalyst are effectively improved; furthermore, a preparation technology is easy to operate, thus being suitable for large-scale production.

Description

technical field [0001] The invention belongs to the field of materials science, and relates to a fuel cell anode catalyst material, in particular to a method for preparing black phosphorus graphene composite material loaded noble metal nanoparticles. Background technique [0002] Due to the depletion of global fossil energy resources and the aggravation of environmental pollution, it is urgent for people to find clean and efficient new environmentally friendly energy sources. Among them, fuel cells are used in various fields due to their high energy density and wide range of fuel sources. The key to the energy conversion efficiency of fuel cells is the catalyst. The electrocatalysts of direct alcohol fuel cells are dominated by noble metals, but the reserves of noble metals in nature are limited and expensive, and they are easily poisoned by intermediate products. Therefore, precious metals need to be composited with other materials, among which black phosphorus graphene ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/92H01M8/1011B82Y30/00
CPCB82Y30/00H01M4/925H01M4/926H01M8/1013Y02E60/50Y02P70/50
Inventor 徐群杰吴桐林艳余克刘其范金辰
Owner SHANGHAI UNIVERSITY OF ELECTRIC POWER
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