Molybdenum disulfide-antimony sulfide composite material and its preparation method and application

A technology of molybdenum disulfide and composite materials, applied in chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc., can solve the problems of low photocatalytic activity, low quantum efficiency, narrow band gap energy, etc., and achieve High photocatalytic activity, fast electron transfer rate, and low cost effects

Active Publication Date: 2019-07-09
HUNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, when antimony sulfide is used alone as a photocatalyst, its photocatalytic activity is not high due to its narrow band gap energy and low quantum efficiency.

Method used

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  • Molybdenum disulfide-antimony sulfide composite material and its preparation method and application
  • Molybdenum disulfide-antimony sulfide composite material and its preparation method and application
  • Molybdenum disulfide-antimony sulfide composite material and its preparation method and application

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Embodiment 1

[0037] A molybdenum disulfide-antimony sulfide composite material of the present invention, the composite material includes molybdenum disulfide and antimony sulfide, wherein the molybdenum disulfide is in the form of blocks, the antimony sulfide is in the form of rods, and the block-shaped molybdenum disulfide is doped in the rod-shaped sulfide Antimony surface and middle, wherein the mass fraction of molybdenum disulfide is 8%.

[0038] A method for preparing the molybdenum disulfide-antimony sulfide composite material of the above-mentioned present embodiment, comprising the following steps:

[0039] (1) Dissolve 242mg of sodium molybdate and 601mg of thioacetamide (the molar ratio of the two is 1:8) in deionized water, transfer to a polytetrafluoroethylene tank, heat to 180°C for hydrothermal synthesis, and maintain for 24 Hours later, cool naturally. The reaction product was washed successively with deionized water and absolute ethanol, and then centrifuged at a centrifu...

Embodiment 2

[0047] A molybdenum disulfide-antimony sulfide composite material of the present invention comprises molybdenum disulfide and antimony sulfide, wherein the molybdenum disulfide is block-shaped, the antimony sulfide is rod-shaped, and the block-shaped molybdenum disulfide is doped on the rod-shaped antimony sulfide surface and In the middle, the mass fraction of molybdenum disulfide is 5%.

[0048] A method for preparing the molybdenum disulfide-antimony sulfide composite material of the above-mentioned embodiment differs from the preparation method of embodiment 1 only in that the amount of molybdenum disulfide in step (2) is 10 mg, and the rest of the steps are the same.

Embodiment 3

[0050] A molybdenum disulfide-antimony sulfide composite material of the present invention comprises molybdenum disulfide and antimony sulfide, wherein the molybdenum disulfide is block-shaped, the antimony sulfide is rod-shaped, and the block-shaped molybdenum disulfide is doped on the rod-shaped antimony sulfide surface and In the middle, the mass fraction of molybdenum disulfide is 11%.

[0051] A preparation method of the molybdenum disulfide-antimony sulfide composite material of the above-mentioned embodiment is different from the preparation method of embodiment 1 only in that the amount of molybdenum disulfide in step (2) is 20 mg, and the rest of the steps are the same.

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Abstract

The invention discloses a molybdenum disulfide-antimony sulfide composite material and a preparation method and application thereof. The molybdenum disulfide-antimony sulfide composite material contains molybdenum disulfide and antimony sulfide, and molybdenum disulfide is doped in antimony sulfide. The preparation method comprises the following steps: synthesizing molybdenum disulfide from sodium molybdate and thioacetamide by a hydro-thermal method, ultrasonically dispersing molybdenum disulfide in a sodium hydroxide solution, then adding sodium sulfide nonahydrate, dropwise adding an antimony chloride-containing hydrochloric acid solution into the sodium hydroxide solution containing molybdenum disulfide and sodium sulfide to form a precursor, and finally heating to obtain the molybdenum disulfide-antimony sulfide composite material. The composite material disclosed by the invention has the advantages of strong stability, high cyclic utilization performance, high photocatalysis active sites, and so on; and the preparation method is simple in process, high in operability and low in cost. The composite material has excellent photocatalysis property, and can be widely used for photocatalysis degradation of industrial wastewater.

Description

technical field [0001] The invention belongs to the technical field of composite material preparation, and relates to a photocatalytic nanocomposite material and its preparation method and application, in particular to a molybdenum disulfide-antimony sulfide composite material and its preparation method and application. Background technique [0002] In recent years, photocatalytic technology has been widely used to treat pollutants in wastewater. Many photocatalytic materials such as metal oxides, sulfides and nitrides have received extensive attention and research. Among these photocatalysts, antimony sulfide (Sb 2 S 3 ) is a semiconductor material with a direct band gap of the V-VI group. With its suitable band gap (1.5-2.2eV) and good photosensitive properties, it has potential application prospects in the field of photocatalysis. However, when antimony sulfide is used alone as a photocatalyst, its photocatalytic activity is not high due to its narrow band gap energy a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/051C02F1/30C02F101/22C02F103/30
CPCB01J27/051B01J35/004C02F1/30C02F2101/22C02F2103/30
Inventor 袁兴中王惠曾光明王侯陈晓红吴志斌蒋龙波熊婷张进
Owner HUNAN UNIV
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