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Preparation method of Ti4O7 anode loaded with graphene nanoparticles

A nanoparticle and graphene technology, applied in the field of electrochemistry, can solve the problems of general catalytic activity, low yield of hydroxyl radicals, and high internal resistance of charge transfer, and achieve the goal of improving catalytic activity, reducing internal resistance of charge transfer, and increasing production. Effect

Active Publication Date: 2021-08-10
DONGGUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But Ti 4 o 7 When used as an electrode material, there are problems of low yield of hydroxyl radicals and high internal resistance of charge transfer, so the catalytic activity is general

Method used

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  • Preparation method of Ti4O7 anode loaded with graphene nanoparticles
  • Preparation method of Ti4O7 anode loaded with graphene nanoparticles
  • Preparation method of Ti4O7 anode loaded with graphene nanoparticles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Take Ti 4 o 7 Powder, graphene nanoparticles, ceria powder mixed, where Ti 4 o 7 The diameter of powder is 100nm, ball milling is uniform, and mixed powder is obtained, wherein the mass fraction of graphene nanoparticles is 1%, the mass fraction of cerium oxide powder is 8%, ball milling process is: 1800r / min, ball milling time 20min; Wherein Graphene nanoparticles are graphene oxide;

[0030] Sintering is carried out under high temperature and high pressure by spark plasma sintering. The sintering process is as follows: sintering heating rate 55°C / min, maximum sintering temperature 1200°C, pressure 3MPa, sintering time 20min, and the anode is obtained.

Embodiment 2

[0032] Take Ti 4 o 7 Powder, graphene nanoparticles, ceria powder mixed, where Ti 4 o 7 The diameter of powder is 500nm, ball milling is uniform, and mixed powder is obtained, wherein the mass fraction of graphene nanoparticles is 3%, the mass fraction of cerium dioxide powder is 7%, ball milling process is: 1650r / min, ball milling time 30min; Wherein Graphene nanoparticles are reduced graphene;

[0033] Sintering is carried out under high temperature and high pressure by spark plasma sintering. The sintering process is as follows: sintering heating rate 60°C / min, sintering temperature 1250°C, pressure 4MPa, sintering time 25min, and the anode is obtained.

Embodiment 3

[0035] Take Ti 4 o 7 Powder, graphene nanoparticles, ceria powder mixed, where Ti 4 o 7 The diameter of the powder is 1um, and the ball mill is uniform to obtain a mixed powder, wherein the mass fraction of graphene nanoparticles is 4%, and the mass fraction of ceria powder is 6%. The ball milling process is: 1500r / min, and the ball milling time is 40min;

[0036]Sintering is carried out under high temperature and high pressure by spark plasma sintering. The sintering process is as follows: sintering heating rate 60°C / min, sintering temperature 1100°C, pressure 1MPa, sintering time 20min, and the anode is obtained.

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Abstract

The invention discloses a preparation method of a Ti4O7 anode loaded with graphene nanoparticles. The anode is prepared from Ti4O7 powder and the graphene nanoparticles through spark plasma sintering. Cerium dioxide serves as a binder, titanium black powder (Ti4O7) and the graphene nanoparticles (GR) are mixed and subjected to ball milling to obtain mixed powder, high-temperature sintering is facilitated through a spark plasma sintering technology, the GR@Ti4O7 anode is prepared, the catalytic activity of the Ti4O7 anode can be greatly improved, the number of surface reaction active sites of the Ti4O7 anode can be increased, the yield of .OH can be increased, charge transfer internal resistance is greatly reduced, large-scale application of the Ti4O7 anode to repairing of underground water polluted by 1, 4-dioxane is facilitated, and 1, 4-dioxane degradation capacity of the Ti4O7 anode is similar to that of a boron-doped diamond electrode (BDD).

Description

technical field [0001] The invention relates to the field of electrochemical technology, in particular to a Ti material loaded with graphene nanoparticles 4 o 7 Anode preparation method. Background technique [0002] In recent years, with the rapid development of industry and agriculture, the environmental pollution caused by emerging pollutants produced in the industry has become more and more serious. These emerging pollutants are toxic and difficult to degrade, and 1,4-dioxane is one of them One of the representatives. Traditional physical adsorption and biodegradation are difficult to effectively remove 1,4-dioxane in water. Advanced oxidation technology has a good degradation effect on this pollutant because it can generate highly active free radicals. Ti 4 o 7 It is a commonly used electrode material in advanced oxidation technology, and has a series of advantages such as high electrical conductivity, high chemical stability, and a wide potential window (-1.5V to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/461
CPCC02F1/46109C02F1/4672C02F2001/46133C02F2101/34
Inventor 林辉肖润林李威吕斯濠杨立辉
Owner DONGGUAN UNIV OF TECH
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