A kind of au/cuse tangential heterogeneous nanomaterial and its preparation method

A nanomaterial and heterogeneous technology, which is applied in nanotechnology, chemical instruments and methods, chemical/physical processes, etc., can solve the problem of difficult regulation of heterogeneous structure morphology and structure, poor photocatalytic performance, and plasmon energy. Low utilization rate and other issues, to achieve the effect of enhancing the performance of photocatalytic hydrogen production and stabilizing the morphology and structure
CN110479319BActive Publication Date: 2022-05-03WUHAN INSTITUTE OF TECHNOLOGY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
WUHAN INSTITUTE OF TECHNOLOGY
Publication Date
2022-05-03

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Abstract

The present invention relates to a kind of preparation method of Au / CuSe tangential heterogeneous nano material, comprising: S1. Prepare nano-gold colloid solution under cetyltrimethylammonium bromide system, the particle diameter of gold nanosphere is 18~ 22nm; S2. Preparation of sodium selenium hydride solution, using gold nanospheres as the growth substrate, sodium selenium hydride and copper acetate as precursors, ascorbic acid as reducing agent, and hexadecyltrimethylammonium bromide as the surface by aqueous phase synthesis Activator, vacuum reaction in the presence of hexamethylenetetramine to grow two-dimensional copper selenide nanodisks in the tangential direction of gold nanospheres to obtain an aqueous solution of Au / CuSe tangential heterogeneous nanomaterials; S3. Separation, cleaning and Dry to obtain Au / CuSe tangential heterogeneous nanomaterials. The invention utilizes an all-water phase method to prepare Au / CuSe tangential heterogeneous nanomaterials, and the obtained heterogeneous nanomaterials have stable morphology and structure, obvious double plasmon coupling effect, and excellent photocatalytic hydrogen production performance.
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Description

technical field

[0001] The invention relates to the technical field of preparation of inorganic nanomaterials, in particular to an Au / CuSe tangential heterogeneous nanomaterial and a preparation method thereof. Background technique

[0002] Two-dimensional copper selenide nanodisks have excellent photoelectric conversion properties, large specific surface area, abundant reaction sites, and strong near-infrared plasmonic photon absorption, showing great application potential in the field of photocatalysis. However, due to the weak absorption of two-dimensional copper selenide nanomaterials in the visible light band, and the rapid recombination of carriers generated by photoexcitation, their practical photocatalytic performance is greatly limited. Combining metal nanocrystals with plasmonic properties with two-dimensional semiconductor nanomaterials, the synergistic effect of plasmons and excitons can greatly improve the photocatalytic performance of heterostructures. Since t...

Claims

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