Black phosphorus loaded tungsten nitride nanosheet photocatalyst as well as preparation method and application thereof

A tungsten nitride nano-catalyst technology, applied in the field of photocatalytic materials, can solve the problems of poor light response, poor hydrogen evolution performance of photolysis water, easy reorganization of photogenerated carriers, etc., and achieves the effect of promoting transfer and facilitating charge transfer.
CN111330618AInactive Publication Date: 2020-06-26SHANGHAI UNIVERSITY OF ELECTRIC POWER
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHANGHAI UNIVERSITY OF ELECTRIC POWER
Publication Date
2020-06-26
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a black phosphorus loaded tungsten nitride nanosheet photocatalyst as well as a preparation method and application thereof. Black phosphorus crystals are prepared, and band gaps of the black phosphorus crystals are changed by a high-energy ball milling method, so that black phosphorus nanosheets are obtained; preparing tungsten nitride nanosheets, and growing the tungstennitride nanosheets on the surfaces of the black phosphorus nanosheets through a high-energy ball milling method. Compared with the prior art, the photocatalyst disclosed by the invention has a wide light absorption range; the performance of decomposing water to produce hydrogen is higher; a response also exists in a near-infrared area; cAPABILITY FOR QUICK TRANSFER OF CARRIERS, the photon-generated carrier separation capability is high; the photocatalyst has the characteristics of low carrier recombination rate, certain hydrogen evolution cycle stability and the like, is used for photocatalytic water decomposition hydrogen production, has the highest hydrogen production rate of 188.42 mu mol.g <-1 >. H <-1 > under visible light, and has the hydrogen production rate of 10.77 mu mol.g <-1 >.H <-1 > under the irradiation of light with the wavelength of greater than 700nm; the preparation method is simple to operate and low in cost, and the used raw materials are non-toxic and environment-friendly.
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Description

technical field

[0001] The invention relates to photocatalytic materials, in particular to a black phosphorus-loaded tungsten nitride nanosheet photocatalyst, a preparation method and application thereof. Background technique

[0002] It is well known that hydrogen (H 2 ) is a green, renewable energy source that can be generated from water using solar energy. Furthermore, solar energy is the most abundant source of all clean and sustainable energy sources. In order to alleviate the increasingly severe energy crisis, hydrogen is gradually becoming more and more important. Therefore, photocatalytic water splitting for hydrogen production without the use of hole quenchers has attracted extensive attention in the past decades. But making full use of solar resources is a daunting task. As we all know, near-infrared (NIR) light accounts for 50% of sunlight and is worth developing and utilizing. However, the photon energy in the near-infrared region beyond 700nm is very small ...

Claims

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