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Nitrogen-doped carbon material modified silver phosphate composite photocatalyst, preparation method and application thereof

A nitrogen-doped carbon and silver phosphate technology, applied in chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc. Catalyst promotion and application, weak photocatalytic activity and other issues, to achieve the effect of inhibiting photocorrosion, high use value, and improving photocatalytic efficiency

Active Publication Date: 2020-07-10
GUANGDONG UNIV OF PETROCHEMICAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing silver phosphate catalysts modified by carbonaceous materials still have the disadvantages of low photogenerated electron-hole pair separation efficiency, weak photocorrosion resistance, and weak photocatalytic activity, which lead to the catalyst not being able to efficiently degrade and remove organic pollutants. Requirements, thus greatly limiting the popularization and application of the existing silver phosphate composite photocatalyst

Method used

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  • Nitrogen-doped carbon material modified silver phosphate composite photocatalyst, preparation method and application thereof
  • Nitrogen-doped carbon material modified silver phosphate composite photocatalyst, preparation method and application thereof
  • Nitrogen-doped carbon material modified silver phosphate composite photocatalyst, preparation method and application thereof

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Embodiment 1

[0051] A nitrogen-doped carbon material modified silver phosphate composite photocatalyst comprises nitrogen-doped carbon material and silver phosphate particles, and the silver phosphate particles are supported on the nitrogen-doped carbon material.

[0052] In this embodiment, the mass ratio of nitrogen-doped carbon material to silver phosphate particles is 2.0×10 -5 .

[0053] In this embodiment, the nitrogen-doped carbon material is a carbon nanomaterial with a hollow tubular structure, and the diameter of the tube is 40 nm.

[0054] A method for preparing the silver phosphate composite photocatalyst modified by the nitrogen-doped carbon material in the above-mentioned embodiment of the present invention, the preparation process flow chart is as follows figure 1 shown, including the following steps:

[0055] (1) Weigh 53.5mg of NH 4 Cl and 158.0 mg of KMnO 4 , were dissolved in 30mL of ultrapure water to obtain NH 4 Cl solution and KMnO 4 solution; then the NH 4 Cl so...

Embodiment 2

[0065] A preparation method of a nitrogen-doped carbon material modified silver phosphate composite photocatalyst is basically the same as in Example 1, the only difference being that the volume of the nitrogen-doped carbon material dispersion mother liquor in step (7) of Example 2 is 2.5 mL.

[0066] The silver phosphate composite photocatalyst modified by the nitrogen-doped carbon material obtained in Example 2, denoted as Ag 3 PO 4 @2.5mLNC.

Embodiment 3

[0068] A preparation method of a nitrogen-doped carbon material modified silver phosphate composite photocatalyst is basically the same as in Example 1, the only difference being that the volume of the nitrogen-doped carbon material dispersion mother liquor in step (7) of Example 3 is 5.0 mL.

[0069] The silver phosphate composite photocatalyst modified by the nitrogen-doped carbon material obtained in Example 3, denoted as Ag 3 PO 4 @5.0mLNC.

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Abstract

The invention discloses a nitrogen-doped carbon material modified silver phosphate composite photocatalyst, a preparation method and application thereof. The silver phosphate composite photocatalyst comprises a nitrogen-doped carbon material, and silver phosphate particles are loaded on the nitrogen-doped carbon material. The preparation method comprises the following steps: preparing the nitrogen-doped carbon material into a nitrogen-doped carbon material dispersion liquid, adding an Ag<+> solution to prepare a nitrogen-doped carbon material / Ag<+> dispersion liquid, and adding an HPO4<2-> solution to prepare the silver phosphate composite photocatalyst. The silver phosphate composite photocatalyst disclosed by the invention has the advantages of high photo-induced electron-hole pair separation efficiency, strong light corrosion resistance, strong photocatalytic activity and the like, is a novel efficient visible light photocatalyst, can be widely applied to removal of organic pollutants in the environment, and has very high use value and very good application prospect. The preparation method of the silver phosphate composite photocatalyst has the advantages of simple process, operation method, low cost, greenness, no pollution and the like, is suitable for large-scale preparation, and is beneficial to industrial application.

Description

technical field [0001] The invention belongs to the technical fields of photocatalytic application of semiconductor materials and environmental protection, and relates to a silver phosphate composite photocatalyst modified by nitrogen-doped carbon materials and a preparation method and application thereof. Background technique [0002] With the rapid development of economy and modern industry, the increasingly serious environmental pollution and ecological damage have become one of the most serious problems today. In particular, pharmaceuticals and personal care products (PPCP), as emerging organic pollutants, have received more and more attention worldwide. Antibiotics, non-steroidal anti-inflammatory drugs, anticonvulsants, contrast agents, hormones, lipid regulators, painkillers, preservatives, disinfectants, insect repellents, soaps, detergents, perfumes, etc. used in human production and life All belong to PPCP. Among them, diclofenac (DCF) is currently one of the mos...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/24C02F1/30B01J35/02B01J35/10C02F101/30C02F101/34C02F101/36C02F101/38B01J35/00
CPCB01J27/24C02F1/30C02F2101/30C02F2101/345C02F2101/36C02F2101/38C02F2101/40C02F2305/10B01J35/40B01J35/61B01J35/39Y02W10/37
Inventor 杨春平林燕邬鑫吴少华李翔程叶婷滕青钟袁元
Owner GUANGDONG UNIV OF PETROCHEMICAL TECH
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