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Molybdenum disulfide nanosheet/porous graphitized biochar composite material and its preparation method and application

A technology of porous graphite and molybdenum disulfide, which is applied in the field of material science, can solve the problems of poor electrical conductivity, easy agglomeration of molybdenum disulfide nanosheets, and high recombination rate of photogenerated electron-hole pairs, and achieves good electrical conductivity and good photoelectrochemical properties. Sexual and morphological integrity

Active Publication Date: 2020-08-07
HUNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, molybdenum disulfide homogeneous catalysts have problems such as high photogenerated electron-hole pair recombination rate and poor electrical conductivity, and due to the van der Waals force, molybdenum disulfide nanosheets are easy to agglomerate.

Method used

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  • Molybdenum disulfide nanosheet/porous graphitized biochar composite material and its preparation method and application
  • Molybdenum disulfide nanosheet/porous graphitized biochar composite material and its preparation method and application
  • Molybdenum disulfide nanosheet/porous graphitized biochar composite material and its preparation method and application

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Embodiment 1

[0030] A molybdenum disulfide nanosheet / porous graphitized biochar composite material uses porous graphitized biochar as a carrier, and molybdenum disulfide nanosheets are embedded on the surface of the porous graphitized biochar.

[0031] A preparation method of the molybdenum disulfide nanosheet / porous graphitized biochar composite material of the above-mentioned present embodiment, comprising the following steps:

[0032] (1) Preparation of porous graphitized biochar (PGBC):

[0033] (1.1) The agricultural waste stalks that were ground and sieved after natural air drying were used as carbon precursors, placed in a solution of potassium ferrate with a concentration of 1 mol / L, soaked for 24 hours under stirring conditions, and then dried in a vacuum oven to obtain Agricultural waste straw soaked with potassium permanganate.

[0034] (1.2) Transfer the powder obtained after drying in step (1.1) (that is, the agricultural waste stalk soaked with potassium permanganate) to a tub...

Embodiment 2

[0041] Application of a molybdenum disulfide nanosheet / porous graphitized biochar composite material in the treatment of antibiotics, specifically the molybdenum disulfide nanosheet / porous graphitized biochar composite material (MoS 2 / PGBC 16 、MoS 2 / PGBC 24 、MoS 2 / PGBC 32 ) the tetracycline hydrochloride in the water body is processed, comprising the following steps:

[0042] Get the molybdenum disulfide nanosheet / porous graphitized biochar composite material (MoS 2 / PGBC 16 、MoS 2 / PGBC 24 、MoS 2 / PGBC 32 ), molybdenum disulfide nanosheets (MoS 2 ), each 20mg, respectively placed in 50mL tetracycline hydrochloride solution with a concentration of 20mg / L, mixed evenly, and carried out dark reaction for 30min under dark conditions. The photocatalytic degradation reaction was carried out for 60 minutes to complete the treatment of tetracycline hydrochloride in the water body.

[0043] Sampling and measuring the removal rate of tetracycline hydrochloride in the ana...

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Abstract

The invention discloses a molybdenum disulfide nanosheet / porous graphitized biocarbon composite material and a preparation method and application thereof. The composite material takes porous graphitized biocarbon as a carrier, and the surface of the composite material is embedded with a molybdenum disulfide nanosheet. The preparation method comprises the following steps: preparing porous graphitized biochar powder; ultrasonic dispersing the porous graphitized biochar powder in water, adding sodium molybdate dihydrate and thioacetamide for hydrothermal reaction, centrifuging, washing and dryingto obtain the composite material. The composite material has the advantages of large specific surface area, good conductivity, low photogenerated electron-hole pair recombination rate, high photocatalytic activity, high universality and the like, and the preparation method has the advantages of simple process, simple and convenient operation and low cost, environmental protection, and no toxic and harmful by-products, suitability for large-scale preparation, and the method meets the requirement of actual production. The composite material can rapidly and efficiently treat antibiotics in the environment, and has good application value and application prospect.

Description

technical field [0001] The invention belongs to the field of material science, and relates to a molybdenum disulfide nanosheet / porous graphitized biochar composite material and a preparation method and application thereof. Background technique [0002] In recent years, the abuse of antibiotics has become a common phenomenon, resulting in more and more environmental and ecological problems. With the extensive use of antibiotics, some antibiotics that have not been metabolized will be directly excreted by animals and enter the external environment, causing organisms in the environment to be exposed to antibiotics for a long time, so it may cause harm to microorganisms in the environment, such as causing resistant bacteria. produce. The drug-resistant bacteria in the host will accelerate the degradation of the drug, weaken the antibacterial effect of the drug, and reduce the efficacy of the drug. As a "new environmental pollutant", antibiotics have the characteristics of rema...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/28B01J35/00C02F1/30C02F101/34C02F101/36C02F101/38
CPCB01J23/28B01J35/004C02F1/30C02F2101/34C02F2101/36C02F2101/38C02F2305/10
Inventor 叶淑静曾光明武海鹏谭小飞梁婕宋彪周成赟王晗张鹏
Owner HUNAN UNIV
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