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Carbon-doped supramolecular polymerized carbon nitride visible-light-driven photocatalyst and application thereof

A supramolecular polymer and supramolecular technology, applied in physical/chemical process catalysts, peroxides/peroxyhydrates/peroxyacids/superoxides/ozonides, inorganic chemistry, etc., can solve the problem of large energy consumption , pollution of the environment, insufficient photocatalytic performance of carbon nitride materials, etc., to achieve the effect of improving performance

Pending Publication Date: 2022-03-25
SOUTHWEST UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a carbon-doped supramolecular polymerized carbon nitride visible light catalyst and its application to solve the problem of large energy consumption and environmental pollution in the traditional use of anthraquinone method to prepare hydrogen peroxide; and the photocatalysis of carbon nitride materials Insufficient performance

Method used

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  • Carbon-doped supramolecular polymerized carbon nitride visible-light-driven photocatalyst and application thereof
  • Carbon-doped supramolecular polymerized carbon nitride visible-light-driven photocatalyst and application thereof
  • Carbon-doped supramolecular polymerized carbon nitride visible-light-driven photocatalyst and application thereof

Examples

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Embodiment 1

[0025] The preparation of a carbon-doped supramolecular polymerized carbon nitride visible light catalyst is prepared by the following method: at room temperature, 1 g of melamine, 1.02 g of cyanuric acid, and 0.3 g of barbituric acid are respectively dissolved in 50 ml of dimethyl In the sulfoxide solution, melamine solution, cyanuric acid solution, and barbituric acid solution were obtained; the melamine solution and the barbituric acid solution were mixed and stirred for 3 minutes, and then the cyanuric acid solution was added to continue stirring for 17 minutes at 25°C. The supramolecular polymer is obtained by polymerization reaction; the supramolecular polymer is washed with absolute ethanol, then centrifuged at 3000r / min, and then dried continuously for 12h. The washed and dried supramolecular polymer was placed in a tube furnace, and the temperature was raised to 550°C at a rate of 5°C / min under a nitrogen atmosphere, and the roasting time was 2h to obtain a carbon-dope...

Embodiment 2

[0027] The preparation method of Example 2 is basically the same as that of Example 1, the difference being that the amount of each raw material is different, specifically 1 g of melamine, 1.02 g of cyanuric acid, 0.3 g of barbituric acid, and 100 ml of dimethyl sulfoxide.

Embodiment 3

[0029] The preparation method of Example 3 is basically the same as that of Example 1, the difference being that the amount of each raw material is different, specifically 1 g of melamine, 1.02 g of cyanuric acid, 0.01 g of barbituric acid, and 150 ml of dimethyl sulfoxide.

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Abstract

The invention discloses a carbon-doped supramolecular polymerized carbon nitride visible-light-driven photocatalyst and application thereof, and relates to the technical field of photocatalysts, and the technical scheme is as follows: the photocatalyst is prepared by the following steps: at normal temperature, respectively dissolving melamine, cyanuric acid and barbituric acid in a dimethyl sulfoxide solution; a melamine solution, a cyanuric acid solution and a barbituric acid solution are obtained; the preparation method comprises the following steps: mixing and stirring a melamine solution, a barbituric acid solution and a cyanuric acid solution, and carrying out polymerization reaction to obtain a supramolecular polymer; washing the supramolecular polymer with absolute ethyl alcohol, centrifuging, and drying; and roasting the washed and dried supramolecular polymer in a tubular furnace to obtain the carbon-doped supramolecular polymerized carbon nitride visible-light-driven photocatalyst. The effect of remarkably improving the visible light hydrogen peroxide production performance is achieved.

Description

technical field [0001] The invention relates to the technical field of photocatalysts, more specifically, it relates to a carbon-doped supramolecular polymerized carbon nitride visible light catalyst and its application. Background technique [0002] Hydrogen peroxide is an efficient, environmentally friendly oxidant, widely used in medicine, chemical industry, environmental governance and other fields (Angew.Chem.Int.Ed.2006,45,6962–6984; Nat.Commun., 2021, 12, 483). The anthraquinone method is currently the most important method for industrial production of hydrogen peroxide, accounting for more than 95% of the market share. However, the anthraquinone method requires continuous hydrogenation and oxidation steps, which consumes a lot of energy and losses, and produces waste water, waste gas and solid waste. (ACS Catal. 2018, 8, 4064-4081). The inadequacy of the anthraquinone method has prompted industry and academia to jointly develop alternative synthetic methods that wo...

Claims

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Application Information

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IPC IPC(8): B01J27/24B01J35/10C01B15/027
CPCB01J27/24C01B15/027B01J35/39B01J35/613
Inventor 彭敬东张子龙
Owner SOUTHWEST UNIVERSITY
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