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A kind of non-metal doped graphene and its preparation method and its application in electrocatalytic oxygen reduction reaction

A graphene and non-metal technology, applied in the field of non-metal doped graphene, can solve the problems of high cost, cumbersome steps, time-consuming, etc., and achieve the effects of easy operation, simple steps, and easy control of reactions

Active Publication Date: 2018-06-19
SHANGHAI NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are mainly specific methods such as chemical vapor deposition, ball milling, bottom-up synthesis, heat treatment, wet chemistry, Plasma, photochemical treatment and arc discharge, but these methods often have the disadvantages of time-consuming, energy-consuming, cumbersome steps and high cost.

Method used

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  • A kind of non-metal doped graphene and its preparation method and its application in electrocatalytic oxygen reduction reaction
  • A kind of non-metal doped graphene and its preparation method and its application in electrocatalytic oxygen reduction reaction
  • A kind of non-metal doped graphene and its preparation method and its application in electrocatalytic oxygen reduction reaction

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Measure 2.0 mL of DMF reagent and a special quartz test tube for microwave reaction, use tweezers, scissors, a blade, and filter paper to cut out 0.7 g of metallic Na, chop the metallic Na, and carefully and slowly put it into the quartz test tube filled with DMF. Take all protective measures during the process, and operate in a fume hood. After the reaction is still, place the quartz test tube in a microwave reactor for reaction. The initial reaction temperature is 25.0 °C, and the heating time is 10.0 min. The desired reaction temperature is 180.0 °C. The reaction time was maintained at the reaction temperature for 30.0 min, and the temperature was lowered for 10.0 min. The synthesized doped graphene product is first transferred to a beaker filled with absolute ethanol to eliminate the residual metal Na in the reaction, then ultrapure water is added and ultrasonically dispersed to obtain an alcohol-water dispersion of the product, and the pH of the dispersion is determ...

Embodiment 2

[0034]Measure 3.0 mL of DMF reagent and a special quartz test tube for microwave reaction, use tweezers, scissors, a blade and filter paper, cut out 1.1 g of metallic Na, chop the metallic Na, and carefully and slowly put it into the quartz test tube filled with DMF. Take all protective measures during the process, and operate in a fume hood. After the reaction is still, place the quartz test tube in a microwave reactor for reaction. The initial reaction temperature is 25.0 °C, and the heating time is 10.0 min. The desired reaction temperature is 180.0 °C. The reaction time was maintained at the reaction temperature for 30.0 min, and the temperature was lowered for 10.0 min. The synthesized doped graphene product is first transferred to a beaker filled with absolute ethanol to eliminate the residual metal Na in the reaction, then ultrapure water is added and ultrasonically dispersed to obtain an alcohol-water dispersion of the product, and the pH of the dispersion is determined...

Embodiment 3

[0036] Measure 2.0 mL of DMF reagent and a special quartz test tube for microwave reaction, use tweezers, scissors, a blade, and filter paper to cut out 0.7 g of metallic Na, chop the metallic Na, and carefully and slowly put it into the quartz test tube filled with DMF. Take all protective measures during the process, and operate in a fume hood. After the reaction is still, place the quartz test tube in the microwave reactor for reaction. The initial reaction temperature is 25.0 °C, and the heating time is 10.0 min. The desired reaction temperature is 190.0 °C. The reaction time was maintained at the reaction temperature for 30.0 min, and the temperature was lowered for 10.0 min. The synthesized doped graphene product is first transferred to a beaker filled with absolute ethanol to eliminate the residual metal Na in the reaction, then ultrapure water is added and ultrasonically dispersed to obtain an alcohol-water dispersion of the product, and the pH of the dispersion is dete...

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Abstract

The invention discloses a preparation method of a nonmetallic doped graphene. The preparation method is characterized by comprising the following steps of (1) using a laboratory common organic solvent containing doped atoms as raw material, or using mixture of ethyl alcohol or a compound containing doped atoms as raw material, and reacting with metal sodium, so as to obtain a precursor solution; (2) putting the precursor solution obtained in step (1) into a microwave reactor, heating, reacting, operating according to operation and use requirements and precaution specification of instruments, and setting the reaction temperature and time parameters; (3) filtering a microwave product obtained in step (2), washing, and drying. The preparation method has the advantages that the steps are simple, the cost is low, the energy-saving and environment-protection effects are realized, and the industrial batch production may be realized; the synthesized doped graphene material has good application activity in the electrocatalytic oxygen reduction application; the prepared nonmetallic doped graphene material has good doped graphene material property.

Description

technical field [0001] The present invention uses common organic reagents containing doping atoms as a single raw material or common liquid-phase alcohol organic molecules as carbon sources, together with compounds containing doping atoms as raw materials for synthesis, and metal Na as a reducing agent. , liquid-phase, rapid, low-temperature, in-situ synthesis of non-metal-doped graphene. The microwave reaction has a special rapid heating history and the reaction is easy to control, so that the synthesis method has the advantages of low carbon, environmental protection, cost saving and is expected to further realize industrial production. The present invention mainly discloses a method for rapid low-temperature in-situ synthesis of non-metallic (such as N, S, B, etc.) doped graphene in microwave reaction liquid phase and its application in electrocatalytic oxygen reduction. technical background [0002] Graphene is an emerging special carbon material with sp 2 The six-memb...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B32/184H01M4/96
CPCC01P2002/85C01P2004/03H01M4/96Y02E60/50
Inventor 张蝶青刘凡凡陈小浪肖舒宁李和兴
Owner SHANGHAI NORMAL UNIVERSITY