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Preparation method of three-dimensional platinum/Mxene-reduced graphene oxide catalyst, product and application thereof

A graphene and catalyst technology, which is applied in the field of preparation of three-dimensional platinum/Mxene-reduced graphene oxide catalyst, can solve the problems of electrocatalytic performance without research, achieve excellent electrocatalytic performance, reduce cost, and reduce covering platinum attachment sites The effect of the probability of

Inactive Publication Date: 2021-02-02
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the electrocatalytic performance of platinum stabilized on graphene and Mxene for the oxidation of alcohols has not been studied in the prior art

Method used

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  • Preparation method of three-dimensional platinum/Mxene-reduced graphene oxide catalyst, product and application thereof
  • Preparation method of three-dimensional platinum/Mxene-reduced graphene oxide catalyst, product and application thereof
  • Preparation method of three-dimensional platinum/Mxene-reduced graphene oxide catalyst, product and application thereof

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Experimental program
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Effect test

Embodiment 1

[0043] The preparation method of three-dimensional platinum / Mxene-reduced graphene oxide catalyst (Pt / Mxene-rGO), comprises the following steps:

[0044] (1) Mxene (less layer Ti 3 C 2 T x Preparation of nanosheets): Add 1g of titanium aluminum carbide to 6mol / L20mL of HCl, then add 1g of LiF, stir to react for 36h, wash with water several times until the pH of the supernatant is 6, and then disperse the precipitate Sonicate in ethanol for 2h, freeze-dry, and then prepare few-layer Ti 3 C 2 T x Nanosheets are Mxene.

[0045] (2) Preparation of graphene oxide (GO): Slowly add 1 g of graphite powder into 30 mL of concentrated sulfuric acid at 4 °C, and react at 3 °C for 2 h; raise the temperature to 30-50 °C for 1 h, then raise the temperature to 85 Add a certain amount of deionized water (about 10ml) to react for 0.5h at about ℃; after the reaction is finished, add H 2 o 2 To confirm that no bubbles are generated; finally use hydrochloric acid and H 2 O wash the produc...

Embodiment 2

[0048] The preparation method of three-dimensional platinum / Mxene-reduced graphene oxide catalyst (Pt / Mxene-rGO), comprises the following steps:

[0049] First add 20mg GO and 20mg Mxene to 40mL ethylene glycol respectively, apply ultrasonication for 1h, and then add a certain amount of K to the suspension synthesized above 2 PtCl 4 (2.128mL, 24.09mmol / L), stirred for 30min, then poured the mixture into an autoclave, reacted at 120°C for 10h, and finally, washed with deionized water several times to obtain Pt / Mxene-rGO. The theoretical loading of platinum is 20wt%.

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Abstract

The invention discloses a preparation method of a three-dimensional platinum / Mxene-reduced graphene oxide catalyst, and relates to the technical field of catalysts. The method comprises the followingsteps: (1) preparing Mxene; and (2) respectively adding graphene oxide and Mxene prepared in the step (1) into ethylene glycol, carrying out ultrasonic action, adding K2PtCl4 into the suspension, stirring, pouring the mixture into a high-pressure reaction kettle, and reacting at 120 DEG C to obtain the three-dimensional platinum / Mxene-reduced graphene oxide catalyst. The invention also provides aproduct prepared by the preparation method and application thereof. The invention has the advantages that the preparation method is simple, mild, harmless, economical and convenient. And Pt / MxenerGO has an excellent electro-catalytic property. Meanwhile, the CO resistance and tolerance to methanol oxidation reaction are good.

Description

technical field [0001] The invention relates to the technical field of alcohol oxidation catalysts, in particular to a preparation method, product and application of a three-dimensional platinum / Mxene-reduced graphene oxide catalyst. Background technique [0002] Fuel cells have attracted more and more attention due to their high conversion efficiency, diverse fuels, and convenient use. In fact, alcohol electrolytes such as methanol, ethylene glycol (EG) or glycerol (GC) used in direct alcohol fuel cells (DAFCs) are easier to store and carry than pure hydrogen. So far, platinum-based materials are still effective catalysts for accelerating alcohol oxidation reactions due to their unique characteristics. However, the high cost and low utilization of Pt still restrict the practical application of DAFC. [0003] At present, many methods have been proposed to facilitate the dispersion of Pt nanoparticles on different support materials, such as graphene, carbon nanotubes, bioch...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/88H01M4/92H01M8/1011
CPCH01M4/8878H01M4/926H01M8/1011Y02E60/50
Inventor 黄青赵云梦
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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