CuO/g-C3N4 photocatalyst as well as preparation method and application thereof

A photocatalyst, g-c3n4 technology, applied in metal/metal oxide/metal hydroxide catalyst, physical/chemical process catalyst, peroxide/peroxyhydrate/peroxyacid/superoxide/ozonide Orientation can solve the problem of low yield and achieve the effect of high yield and large specific surface area

Pending Publication Date: 2022-07-29
HUBEI UNIV OF ARTS & SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It has been reported that the photocatalyst used to prepare hydrogen peroxide is TiO 2 , g-C 3 N 4 and a small amount of bismuth-based photocatalysts, but the H of these photocatalysts 2 o 2 low yield

Method used

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  • CuO/g-C3N4 photocatalyst as well as preparation method and application thereof
  • CuO/g-C3N4 photocatalyst as well as preparation method and application thereof
  • CuO/g-C3N4 photocatalyst as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Put 0.028g of g-C 3 N 4 Add to the mixed solution consisting of 3mL N,N dimethylformamide, 4mL ethanol and 2mL pure water, ultrasonicate for 1h, then add 0.438g anhydrous copper nitrate and 0.236g trimesic acid in turn, stir until completely dissolved to obtain the reaction solution. The reaction solution was transferred into a polytetrafluoroethylene hydrothermal kettle, sealed, and kept at 85°C for 24 hours for a hydrothermal reaction. After the reaction was completed, it was cooled to room temperature, and the precipitate A obtained by the reaction was treated with N,N dimethylformamide and Alternately washed with ethanol, and then dried at 60 °C for 6 h to obtain 0.4 g of precipitate A, which is CuBTC / g-C 3 N 4 . The dried precipitate A was ultrasonically dispersed into 40 ml of distilled water, 1.6 g of sodium hydroxide was added, and stirred for 2 h. The obtained precipitate B was washed with pure water and dried at 60 °C for 6 h. The obtained powder was CuO / g...

Embodiment 2

[0035] Put 0.028g of g-C 3 N 4 Add to the mixed solution consisting of 4mL N,N dimethylformamide, 6mL ethanol and 2mL pure water, ultrasonicate for 1h, then add 0.876g anhydrous copper nitrate and 0.472g trimesic acid in turn, stir until completely dissolved to obtain the reaction solution. The reaction solution was transferred into a polytetrafluoroethylene hydrothermal kettle, sealed, and kept at 70°C for 36 hours for hydrothermal reaction. After the reaction was completed, it was cooled to room temperature, and the precipitate A obtained by the reaction was treated with N,N dimethylformamide and Alternately washed with ethanol, and then dried at 70 °C for 5 h to obtain 0.8 g of precipitate A, which is CuBTC / g-C 3 N 4 . The dried precipitate A was ultrasonically dispersed into 40 ml of distilled water, 3.2 g of sodium hydroxide was added, and stirred for 1 h. The obtained precipitate B was washed with pure water and dried at 40 °C for 6 h. The obtained powder was CuO / g-C...

Embodiment 3

[0039] Put 0.056g of g-C 3 N 4 Add to the mixed solution consisting of 5mL N,N dimethylformamide, 3mL ethanol and 1.5mL pure water, ultrasonicate for 1h, then add 0.438g anhydrous copper nitrate and 0.236g trimesic acid in turn, stir until completely dissolved to obtain reaction solution. The reaction solution was transferred into a polytetrafluoroethylene hydrothermal kettle, sealed, and kept at 100 ° C for 12 hours for hydrothermal reaction. After the reaction was completed, it was cooled to room temperature, and the precipitate A obtained by the reaction was treated with N,N dimethylformamide and Alternately washed with ethanol, and then dried at 50 °C for 7 h to obtain 0.41 g of precipitate A, which is CuBTC / g-C 3 N 4 . The dried precipitate A was ultrasonically dispersed into 40 ml of distilled water, 2.0 g of sodium hydroxide was added, and stirred for 5 h. The obtained precipitate B was washed with pure water and dried at 70 °C for 6 h. The obtained powder was CuO / g...

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Abstract

The invention discloses a CuO / g-C3N4 photocatalyst and a preparation method and application thereof.The preparation method comprises the steps that g-C3N4 is added into a mixed solution composed of N, N-dimethylformamide, ethyl alcohol and pure water, anhydrous copper nitrate and trimesic acid are sequentially added after ultrasonic treatment is conducted, stirring is conducted till the materials are completely dissolved, and a reaction solution is obtained; transferring the reaction solution into a hydrothermal kettle for hydrothermal reaction, and cleaning and drying a precipitate A obtained by the reaction; ultrasonically dispersing the dried precipitate A into distilled water, adding sodium hydroxide, stirring, and cleaning and drying the obtained precipitate B to obtain the CuO / g-C3N4 photocatalyst. The preparation method is simple, the prepared CuO / g-C3N4 is large in specific surface area and can be used as a photocatalyst for photocatalytic production of H2O2, and the H2O2 yield is high.

Description

technical field [0001] The invention belongs to the technical field of catalysts, and in particular relates to a CuO / g-C 3 N 4 Photocatalyst and preparation method and application thereof. Background technique [0002] Hydrogen peroxide (H 2 O 2 ) is a versatile chemical that can be widely used in chemical synthesis, environmental purification and various biological processes, as well as in electrochemical processes. Currently, a large number of H 2 O 2 The synthesis is mainly through the self-oxidation process of anthraquinone. This reaction requires a multi-step hydrogenation and oxidation process, and the energy consumption is very high, which is a very energy-saving and environmentally friendly synthesis method. Therefore, there is an urgent need to develop an energy-saving and environmentally friendly method to meet the demand for green synthesis of hydrogen peroxide. Semiconductor catalysis technology has attracted much attention due to its advantages of cleanli...

Claims

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Application Information

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IPC IPC(8): B01J27/24B01J23/72B01J35/10C01B15/027
CPCB01J27/24B01J23/72C01B15/027B01J35/23B01J35/615B01J35/39
Inventor 戴高鹏张敏薛冬刘素芹肖作安
Owner HUBEI UNIV OF ARTS & SCI
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