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Co/V double-metal-doped g-C3N4 photocatalyst and preparation method and application thereof

A photocatalyst, g-c3n4 technology, applied in physical/chemical process catalysts, chemical instruments and methods, water/sludge/sewage treatment, etc., can solve problems such as limited performance improvement and reduced carrier separation efficiency, and achieve The effect of short reaction time, increasing surface active sites, and improving degradation efficiency

Active Publication Date: 2020-12-01
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although element doping may act as a carrier recombination center, reducing the separation efficiency of carriers and reducing the g-C 3 N 4 specific surface area, but its effect on g-C 3 N 4 Limited performance improvement

Method used

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  • Co/V double-metal-doped g-C3N4 photocatalyst and preparation method and application thereof
  • Co/V double-metal-doped g-C3N4 photocatalyst and preparation method and application thereof
  • Co/V double-metal-doped g-C3N4 photocatalyst and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Example 1: Co / V double metal doping g-C3 N 4 Preparation of photocatalyst

[0037] (1) Co / V double metal doped g-C 3 N 4 Preparation of photocatalyst precursor:

[0038] Prepare 0.1mol L -1 DMF solution containing vanadyl acetylacetonate, 0.2mol L -1 Cobalt acetate aqueous solution, set aside; then dissolve 1g urea in 5mL distilled water, stir well, then add 5mL cobalt acetate aqueous solution, 20mL DMF solution containing vanadyl acetylacetonate to it, mix well, transfer the mixed solution to high pressure Heat reaction at 150°C for 24 hours in the reaction kettle, cool to room temperature after the reaction, centrifuge, wash, and dry to obtain Co / V bimetallic doped g-C 3 N 4 Photocatalyst precursor;

[0039] (2) Co / V double metal doped g-C 3 N 4 Preparation of photocatalyst:

[0040] 10g of urea dried at 80°C for 24h, 0.001g of Co / V bimetallic doped g-C 3 N 4 The photocatalyst precursors were mixed evenly, ground and transferred to a crucible, and placed i...

Embodiment 2

[0044] Example 2: Co / V double metal doping g-C 3 N 4 Preparation of photocatalyst

[0045] (1) Co / V double metal doped g-C 3 N 4 Preparation of photocatalyst precursor:

[0046] Prepare 0.1mol L -1 DMF solution containing vanadyl acetylacetonate, 0.2mol L -1 Cobalt acetate aqueous solution, set aside; then dissolve 1g urea in 5mL distilled water, stir well, then add 5mL cobalt acetate aqueous solution, 20mL DMF solution containing vanadyl acetylacetonate to it, mix well, transfer the mixed solution to high pressure Heat reaction at 150°C for 24 hours in the reaction kettle, cool to room temperature after the reaction, centrifuge, wash, and dry to obtain Co / V bimetallic doped g-C 3 N 4 Photocatalyst precursor;

[0047] (2) Co / V double metal doped g-C 3 N 4 Preparation of photocatalyst:

[0048] 10g of urea dried at 80°C for 24h, 0.0025g of Co / V bimetallic doped g-C 3 N 4 The photocatalyst precursors were mixed evenly, ground and transferred to a crucible, and place...

Embodiment 3

[0050] Example 3: Co / V double metal doping g-C 3 N 4 Preparation of photocatalyst

[0051] (1) Co / V double metal doped g-C 3 N 4 Preparation of photocatalyst precursor:

[0052] Prepare 0.1mol L -1 DMF solution containing vanadyl acetylacetonate, 0.2mol L -1 Cobalt acetate aqueous solution, set aside; then dissolve 1g urea in 5mL distilled water, stir well, then add 5mL cobalt acetate aqueous solution, 20mL DMF solution containing vanadyl acetylacetonate to it, mix well, transfer the mixed solution to high pressure Heat reaction at 150°C for 24 hours in the reaction kettle, cool to room temperature after the reaction, centrifuge, wash, and dry to obtain Co / V bimetallic doped g-C 3 N 4 Photocatalyst precursor;

[0053] (2) Co / V double metal doped g-C 3 N 4 Preparation of photocatalyst:

[0054] 10g of urea dried at 80°C for 24h, 0.005g of Co / V bimetallic doped g-C 3 N 4 The photocatalyst precursors were mixed evenly, ground and transferred to a crucible, and placed...

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Abstract

The invention provides a Co / V double-metal-doped g-C3N4 photocatalyst and a preparation method and application thereof, and belongs to the technical field of photocatalyst synthesis. According to thepreparation method, the Co / V double-metal-doped g-C3N4 photocatalyst is synthesized in one step through a simple and rapid thermal polymerization method, g-C3N4 is modified through element doping, andthe visible light response range is directly expanded through the double-doping effect of Co / V elements. The Co / V double-metal-doped g-C3N4 photocatalyst can be used for visible light catalytic degradation of tetracycline hydrochloride pollutants.

Description

technical field [0001] The invention belongs to the technical field of photocatalyst synthesis, in particular to a Co / V double metal doped g-C 3 N 4 Photocatalyst and its preparation method and application. Background technique [0002] At present, the residual situation of organic pollutants in water is becoming more and more serious. As a representative of organic pollutants in wastewater, antibiotics are difficult to be degraded in the ecological environment. Photocatalytic technology has the advantages of mild reaction conditions, simple operation, fast reaction speed, energy saving and environmental protection. However, photocatalysts generally have high recombination rate of photogenerated carriers, wide band gap, low specific surface area, and poor stability. Therefore, developing new and efficient photocatalytic materials and revealing their reaction mechanism are still the key to the practical application of photocatalytic technology in the future. Technology iss...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/24C02F1/30C02F101/30C02F101/38
CPCB01J27/24C02F1/30C02F2101/38C02F2101/30C02F2305/10B01J35/39
Inventor 董红军吴海君李春梅宋宁张晓旭洪士欢肖梦雅左延
Owner JIANGSU UNIV
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