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Molybdenum disulfide-loaded cobalt-doped zinc oxide photocatalytic degradation material and preparation method thereof

A technology for degrading materials, molybdenum disulfide, which can be used in physical/chemical process catalysts, chemical instruments and methods, chemical/physical processes, etc., and can solve problems such as poor photocatalytic degradation performance

Inactive Publication Date: 2021-03-16
桐乡市吉曼尔信息技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a molybdenum disulfide-loaded cobalt-doped zinc oxide photocatalytic degradation material and its preparation method, which solves the problem of poor photocatalytic degradation performance of the zinc oxide photocatalyst

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  • Molybdenum disulfide-loaded cobalt-doped zinc oxide photocatalytic degradation material and preparation method thereof
  • Molybdenum disulfide-loaded cobalt-doped zinc oxide photocatalytic degradation material and preparation method thereof

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preparation example Construction

[0021] In order to achieve the above object, the present invention provides the following specific implementation methods and examples: a molybdenum disulfide-supported cobalt-doped zinc oxide photocatalytic degradation material, the preparation method comprising the following steps:

[0022] (1) Add deionized water, zinc nitrate, cobalt nitrate and polyethylene glycol in the reactor, wherein the mass ratio of zinc nitrate, cobalt nitrate and polyethylene glycol is 100:2.5-3.5:25-35, placed Stir evenly in the water bath at 30-50°C. The water bath device includes a motor fixed shell, which is fixedly connected with the motor. The motor is fixedly connected with a rotating shaft, and the rotating shaft is fixedly connected with the runner. The water bath cover is fixedly connected, and the surface of the water bath device is equipped with a display. Add ammonia water to adjust the pH to 6-7, reflux at 70-100°C for 1-3h, transfer to the reaction kettle, and place it in an oven at ...

Embodiment 1

[0025] (1) add deionized water, zinc nitrate, cobalt nitrate and polyethylene glycol in the reactor, wherein the mass ratio of zinc nitrate, cobalt nitrate and polyethylene glycol is 100:2.5:25, is placed in the water bath Stir evenly at 30°C, the water bath device includes a motor fixed shell, the motor fixed shell is fixedly connected with the motor, the motor is fixedly connected with a rotating shaft, the rotating shaft is fixedly connected with the runner, the runner is movably connected with a slide plate, and the slide plate is fixedly connected with the water bath lid. A display is installed on the surface of the water bath device, add ammonia water to adjust the pH to 6, reflux at 70°C for 1h, transfer to the reaction kettle, place in an oven and react at 140°C for 6h, the product is washed, dried and ground to obtain cobalt-doped flowers ZnO nanoparticles;

[0026] (2) Add ethanol, cobalt-doped flower-shaped nano-zinc oxide, ammonium molybdate, sulfur powder and pyrr...

Embodiment 2

[0028] ((1) add deionized water, zinc nitrate, cobalt nitrate and polyethylene glycol in the reactor, wherein the mass ratio of zinc nitrate, cobalt nitrate and polyethylene glycol is 100:3:30, place in the water bath Stir evenly at 40°C, the water bath device includes a motor fixed shell, the motor fixed shell is fixedly connected with the motor, the motor is fixedly connected with a rotating shaft, the rotating shaft is fixedly connected with the runner, the runner is movably connected with a slide plate, and the slide plate is fixedly connected with the water bath lid , the surface of the water bath device is equipped with a display, add ammonia water to adjust the pH to 6, reflux at 90°C for 2h, transfer to the reaction kettle, put it in an oven and react at 150°C for 7h, the product is washed, dried and ground to obtain cobalt doped Flower-shaped nano zinc oxide;

[0029] (2) Add ethanol, cobalt-doped flower-shaped nano-zinc oxide, ammonium molybdate, sulfur powder and py...

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Abstract

The invention relates to the technical field of photocatalytic degradation materials, and discloses a molybdenum disulfide-loaded cobalt-doped zinc oxide photocatalytic degradation material. The morphology of zinc oxide is controlled in the process of synthesizing cobalt-doped flower-like nano zinc oxide by a hydrothermal method to generate nano flower-like zinc oxide, divalent cobalt is doped toreplace divalent zinc in zinc oxide, band-gap energy red shift is generated, the visible light absorption capacity of zinc oxide is improved, the molybdenum disulfide-loaded cobalt-doped zinc oxide photocatalytic degradation material is synthesized through a thermal flux method, the zinc oxide and the molybdenum disulfide are matched in energy band, a heterojunction structure can be formed, the electrons of zinc oxide and molybdenum disulfide are excited under optical radiation and transit from a valence band to a conduction band to form carriers, recombination of photo-induced electrons and holes is inhibited, meanwhile, the photo-induced electrons are gathered on the conduction band of zinc oxide and form superoxide radicals after adsorbing oxygen, the superoxide radicals can react withwater to generate hydroxyl radicals, and organic matters can be degraded at high efficiency.

Description

technical field [0001] The invention relates to the technical field of photocatalytic degradation materials, in particular to a molybdenum disulfide-loaded cobalt-doped zinc oxide photocatalytic degradation material and a preparation method. Background technique [0002] Nano-zinc oxide is an important semiconductor material, which is widely used in photodetectors, light-emitting diodes and sensors due to its characteristics of low toxicity, high stability, absorption and scattering of ultraviolet rays, etc. At the same time, nano-zinc oxide has a large The exciton binding energy, electrical and catalytic properties of ZnO have great value in solar cells, varistors and photocatalytic degradation materials, and have been widely studied. However, due to the wide band gap of nano-ZnO, only Absorbing ultraviolet light, the absorption of sunlight is insufficient, it is difficult to exert the photocatalytic degradation performance of organic pollutants of nano-zinc oxide, and the ...

Claims

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Application Information

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IPC IPC(8): B01J27/051B01J35/00
CPCB01J27/0515B01J35/39
Inventor 钱建强
Owner 桐乡市吉曼尔信息技术有限公司
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