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Preparation method of MoSe2 nanosheet coated KNbO3 nanowire heterostructure photocatalytic material

A technology of photocatalytic materials and heterostructures, which is applied in luminescent materials, chemical instruments and methods, catalysts for physical/chemical processes, etc., can solve the problem of unreported photocatalytic performance, and achieve the effect of improving catalytic performance.

Active Publication Date: 2019-05-24
UNIV OF SCI & TECH BEIJING
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Problems solved by technology

[0005] So far, KNbO 3 / MoSe 2 The photocatalytic performance has not been reported

Method used

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  • Preparation method of MoSe2 nanosheet coated KNbO3 nanowire heterostructure photocatalytic material
  • Preparation method of MoSe2 nanosheet coated KNbO3 nanowire heterostructure photocatalytic material
  • Preparation method of MoSe2 nanosheet coated KNbO3 nanowire heterostructure photocatalytic material

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Embodiment Construction

[0028] The present invention covers any alternatives, modifications, equivalent methods and schemes made on the spirit and scope of the present invention as defined by the claims. Further, in order to make the public have a better understanding of the present invention, some specific details are described in detail in the detailed description of the present invention below. The present invention can be fully understood by those skilled in the art without the description of these detailed parts.

[0029] Preparation of KNbO 3 / MoSe 2 Heterostructure photocatalytic materials:

[0030] (1) KNbO was synthesized by hydrothermal method in the first step 3 Nanowires, the specific process is as follows:

[0031]First, 10.942g KOH was dissolved in 15ml of distilled water to form a KOH solution with a concentration of 13mol / L; then 0.874g of metal Nb powder was added to the above-mentioned alkaline solution, and magnetically stirred for 1h; finally, the mixed solution was transferre...

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Abstract

The invention discloses a preparation method of a MoSe2 nanosheet coated KNbO3 nanowire heterostructure photocatalytic material, and belongs to the field of photocatalysis. According to the invention,niobium powder (Nb), potassium hydroxide (KOH), sodium molybdate (Na2MoO4.2H2O) and selenium powder (Se) are used as raw materials, and a KNbO3 / MoSe2 heterostructure photocatalytic material with goodcrystallinity is prepared through a simple hydrothermal method and a solvothermal method. The hydrothermal method is used for synthesizing KNbO3 nanowires, and the solvothermal method is used for synthesizing the KNbO3 / MoSe2 heterostructure photocatalytic material. The preparation method is simple, the experimental conditions are easy to control, and the KNbO3 / MoSe2 heterostructure photocatalyticmaterial is synthesized for the first time. The significantly improved photocatalytic performance is due to the synergistic effect of the heterostructure and the effect of promotion of charge separation by the built-in electric field generated by the spontaneous polarization of a ferroelectric.

Description

technical field [0001] The present invention relates to a kind of MoSe 2 Nanosheets coated KNbO 3 The invention discloses a method for preparing a nanowire heterostructure photocatalytic material, which belongs to the technical field of photocatalytic material preparation. Background technique [0002] In recent years, the problem of environmental pollution has become increasingly serious, and semiconductor photocatalytic degradation of organic pollutants is a promising method to solve environmental pollution problems. Semiconductor photocatalytic materials can be excited by sunlight to generate photogenerated electrons and holes, and further redox reactions to generate highly active superoxide radicals and hydroxyl radicals to degrade organic pollutants in the environment into harmless carbon dioxide and water. A large number of semiconductor photocatalytic materials including metal oxides, metal sulfides, perovskite metal oxides, etc. have been extensively explored. How...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/057B01J35/10C09K11/88C02F1/30C02F101/30
Inventor 张波萍贾淑帆李顺
Owner UNIV OF SCI & TECH BEIJING
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