Electroreduced graphene oxide-nickel double corrole/platinum nanocluster supramolecular composite material and its preparation method and application

A technology of nickel biscorroles and composite materials is applied in the field of electroreduction graphene oxide-nickel biscorroles/platinum nanoclusters and its preparation, and achieves the effects of high electrocatalytic oxidation capacity, easy operation and simple method.

Active Publication Date: 2021-07-02
HUNAN UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

There have been many reports in the literature on the use of graphene as the supporting matrix of platinum nanoclusters, but so far, there has been no report on the synthesis of highly dispersed platinum nanoclusters using graphene-porphyrin composites as a supporting matrix.

Method used

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  • Electroreduced graphene oxide-nickel double corrole/platinum nanocluster supramolecular composite material and its preparation method and application
  • Electroreduced graphene oxide-nickel double corrole/platinum nanocluster supramolecular composite material and its preparation method and application
  • Electroreduced graphene oxide-nickel double corrole/platinum nanocluster supramolecular composite material and its preparation method and application

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Embodiment

[0052] (1) Preparation of graphene oxide-nickel biscorrole: Disperse 50 mg of graphene oxide in freshly steamed 50 mL of DMF, ultrasonically disperse for 30 min, then add 5 mg of nickel biscorrole (NiNC) into the mixture, and ultrasonically treat 20min, stirred and reacted at 60°C for 2h, cooled to room temperature, centrifuged at 14000rmp, in order to remove physically adsorbed nickel biscorrole, alternately washed the product with water and DMF, centrifuged, and vacuum-dried the obtained product for 24h;

[0053] (2) Preparation of graphene oxide-nickel biscorrole / platinum nanoclusters: 25mg graphene oxide-nickel biscorrole was added to 50ml mixed reagent (ethylene glycol / water / DMF, V:V:V=3:1 : 1), ultrasonic dispersion 20min, then add H 2 PtCl 6 Make the content to 30mg / mL, after fully stirring at room temperature for 20min, reflux the mixture at 110°C for 2h, after cooling, wash the product alternately with ethanol and DMF, and finally, centrifuge the product at 50°C Dry...

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Abstract

The invention discloses an electroreduced graphene oxide-nickel double corrole / platinum nanocluster, a preparation method and application thereof. Using nickel double corrole and graphene oxide as raw materials, graphene oxide-nickel double corrole supramolecular composites were prepared by using the principle of non-covalent π-π stacking, supported by graphene oxide-nickel double corrole The matrix synthesizes highly dispersed platinum nanoclusters, and the ternary composite material prepared by this method is then electrochemically reduced to graphene oxide. The prepared electroreduced graphene oxide-nickel biscorrole / Pt composite has extremely high electrocatalytic oxidation activity for methanol and can be used in methanol fuel cells. The preparation scheme proposed by the invention is simple, convenient and easy to operate; the prepared supramolecular complex has extremely high stability as a methanol oxidation catalyst and has strong tolerance to CO that may be produced by methanol oxidation.

Description

technical field [0001] The invention belongs to the technical field of material engineering, and in particular relates to an electroreduced graphene oxide-nickel biscorrole / platinum nanocluster (ERGO-NiNC / Pt) and its preparation method and application. Background technique [0002] Graphene is used in fields such as supercapacitors, solar cells, displays, biological detection, and fuel cells due to its excellent electrical, thermal, and mechanical properties. However, due to the strong intermolecular force between graphene layers, it is easy to agglomerate, difficult to disperse, and poor in compatibility. Deeply oxidized graphene oxide is an important precursor of graphene, which is easily reduced to form graphene, which can be functionalized and modified by organic covalent and non-covalent strategies to achieve stable dispersion, dissolution, Forming and processing. [0003] Porphyrin is a kind of cyclic molecule with large π-conjugated structure, and its large conjugat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/90H01M4/92H01M4/88
CPCH01M4/8825H01M4/90H01M4/9008H01M4/921Y02E60/50
Inventor 邓克勤李春香黄昊文
Owner HUNAN UNIV OF SCI & TECH
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