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Carbon/anthraquinone composite material, preparation method thereof and application of carbon/anthraquinone composite material in hydrogen peroxide synthesis

A technology of composite materials and carbon materials, which is applied in the field of carbon/anthraquinone composite materials and their preparation, can solve the problem of low product selectivity, achieve simple operation, meet a large number of needs, and improve selectivity

Inactive Publication Date: 2021-11-05
ZHEJIANG GONGSHANG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, carbon catalytic materials also have problems such as low product selectivity.

Method used

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  • Carbon/anthraquinone composite material, preparation method thereof and application of carbon/anthraquinone composite material in hydrogen peroxide synthesis
  • Carbon/anthraquinone composite material, preparation method thereof and application of carbon/anthraquinone composite material in hydrogen peroxide synthesis
  • Carbon/anthraquinone composite material, preparation method thereof and application of carbon/anthraquinone composite material in hydrogen peroxide synthesis

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] In this embodiment, carbon (C) and anthraquinone (AQ) composite materials are prepared, and they are loaded on a nickel foam conductive substrate to construct a carbon / anthraquinone composite electrode (AQ-C-Ni electrode), including the following steps:

[0042] (1): Conductive carbon black is selected as the carbon material, and 200 mg of conductive carbon black is weighed, washed with distilled water, and treated with plasma modification. Use self-assembly method to fix 2-aminoanthraquinone on conductive carbon black, dissolve 100mg of 2-aminoanthraquinone in 150mL acetonitrile, add 200mg of modified conductive carbon black after complete dissolution, let the self-assembly reaction stand for 12h, vacuum The obtained powder was dried under vacuum at 60 °C for 3 h after filtration.

[0043] (2): Soak the foamed nickel substrate in hydrochloric acid, absolute ethanol, and deionized water for 15 minutes for pretreatment, and then dry it in a cool place. Weigh 170 mg of i...

Embodiment 2

[0053] Repeat the operation steps of Example 1, the difference is that in the process of preparing the AQ-C-Ni electrode, in step (1), choose g-C 3 N 4 As a carbon material, the rest are the same as in Example 1.

[0054] The electrochemical performance of the AQ-C-Ni electrode prepared under the conditions of this example is slightly higher than that of the electrode prepared under the conditions of Example 1. With respect to conductive carbon black as the carbon material, this example uses g-C 3 N 4 The AQ-C-Ni electrode prepared as a carbon material produced H at 30 min 2 o 2 1.0mg.

Embodiment 3

[0056] Repeat the operation steps of Example 1, except that in the process of preparing the AQ-C-Ni electrode, in step (2), 2-alkylanthraquinone is selected as the anthraquinone material, and the rest are the same as in Example 1.

[0057] The electrochemical performance of the AQ-C-Ni electrode prepared under the conditions of this example is slightly lower than that of the electrode prepared under the conditions of Example 1. Compared with 2-aminoanthraquinones, this example uses 2-alkylanthraquinones as The AQ-C-Ni electrode prepared by anthraquinone material produced H in 30min 2 o 2 0.5 mg.

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Abstract

The invention discloses a preparation method of a carbon / anthraquinone composite material, wherein the preparation method comprises the steps: (1) modifying a carbon material, and regulating oxygen-enriched active side sites, defect sites and the like of the carbon material to obtain a modified carbon material with rich O2 reduction active sites; and (2) dissolving anthraquinone in an organic solvent, adding the modified carbon material obtained in the step (1), carrying out an immobilization reaction, and filtering and drying to obtain the modified carbon / anthraquinone composite material. The invention also comprises an application of the prepared carbon / anthraquinone composite material as an electrode in electrocatalytic synthesis of hydrogen peroxide. Air and water are used as raw materials, O2 is subjected to electrocatalytic reduction under mild conditions to generate H2O2, small-scale and efficient production of hydrogen peroxide is achieved, a large-scale centralized mode of traditional production is eliminated, H2O2 is prepared and used at present, and the preparation method is more environmentally friendly and convenient and can meet the requirement for hydrogen peroxide in daily life.

Description

technical field [0001] The invention relates to the technical field of electrocatalytic materials, in particular to a carbon / anthraquinone composite material, its preparation method and its application in the synthesis of hydrogen peroxide. Background technique [0002] Hydrogen peroxide (H 2 o 2 ) is one of the 100 most important chemicals in the world. As an environmentally friendly oxidant, it is widely used in paper / pulp industry, electronics, chemical synthesis, wastewater treatment, medical disinfection and other fields. [0003] The production methods of hydrogen peroxide usually include anthraquinone method, electrolysis method, oxygen cathode reduction method, isopropanol method and methyl benzyl alcohol oxidation method, etc. Currently, 95% of the global H 2 o 2 It is produced by the anthraquinone method using Pd as a catalyst. There is no direct contact between oxygen and hydrogen in the reaction process, which is relatively safe. However, the process is compl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25B1/30C25B1/50C25B11/095C25B11/054
CPCC25B1/30C25B1/50C25B11/095C25B11/054
Inventor 丛燕青张恩泽陈闽
Owner ZHEJIANG GONGSHANG UNIVERSITY
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