A method for preparing nano-gold arrays with catalytic properties by rigid cross-linking

A catalytic performance, nano-gold technology, applied in the field of nano-gold arrays, can solve the problem of few reports on the application of two-dimensional nano-gold arrays
CN110252292BActive Publication Date: 2021-06-04NORTHEASTERN UNIV LIAONING
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
NORTHEASTERN UNIV LIAONING
Publication Date
2021-06-04

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Abstract

The invention belongs to the technical field of organic material catalysis, and in particular relates to a method for preparing a nano-gold array with catalytic performance through rigid crosslinking. (1) Preparation of gold nano solution for droplet evaporation; (2) Self-assembly and thermal annealing of gold nanoarrays; (3) Substrate transfer treatment after cross-linking of gold nanoparticles with rigid ligands; (4) Catalysis of carbon dioxide by gold nanoarrays Cycloaddition reactions with epoxides. The preparation method of the present invention can improve the catalytic activity through the weak electron-donating effect and steric hindrance of the rigid group, and the rigid cross-linked nano-gold array with a two-dimensional structure will provide multiple exposed gold catalytic sites. Rigid cross-linked gold nanoarrays can be used as good catalysts for carbon dioxide cycloaddition reaction under atmospheric pressure, which opens up a new way for the application of nano-gold arrays, and also opens up new ideas for the design of heterogeneous catalysts.
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Description

technical field

[0001] The invention belongs to the technical field of organic material catalysis, and in particular relates to a method for preparing a nano-gold array with catalytic performance by adopting a rigid cross-linking-plasma cleaning method. Background technique

[0002] Gold nanoarrays have attracted widespread attention due to their wide applications in optical devices, biosensors, chemical sensors, magnetic data storage, and so on. Gold nanoarrays also have potential applications in catalyzing certain oxidative hydrogenation reactions.

[0003] To achieve the self-assembly of gold nanoarrays, various methods have been developed, including the Langmuir-Blodgett (LB) method, the layer-by-layer (LBL) method, the spin-coating method, and the droplet evaporation method. Wait. The self-assembly of nanoparticles into arrays is a delicate process, which usually requires ligands or crosslinkers to provide repulsion and spatial coherence, balance the attractive force ...

Claims

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