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Titanium suboxide/MXene/Co3O4 composite electrode and preparation method thereof

A titanium oxide, composite electrode technology, applied in the field of electrochemistry, can solve the problems of nanoparticle agglomeration, difficult to recycle, increase cost, etc., and achieve the effect of increasing ion concentration, enhancing electrical conductivity, and increasing electron transfer.

Active Publication Date: 2021-08-24
DONGGUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, cobalt nanocatalyst has high-efficiency activation performance, but it is not easy to recycle due to the extremely small particle size.
This problem can be solved by loading it on the substrate, but the loading of nanocatalysts on the substrate often requires a binder, which increases the cost and reduces the activity; there is also the problem of agglomeration of nanoparticles; Cobalt ions linked to health problems like asthma

Method used

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  • Titanium suboxide/MXene/Co3O4 composite electrode and preparation method thereof
  • Titanium suboxide/MXene/Co3O4 composite electrode and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Step 1: Weigh 90% TiO2, 9% MXene, 1% Co 3 o 4 , placed in a vortex shaker for 3 minutes to obtain 2 g of mixed powder.

[0033] Step 2: Put the mixed powder in a vacuum plasma sintering furnace, set the vacuum pressure to 45Pa, the sintering temperature to 500°C, the sintering pressure to 1.5MPa, and the sintering time to 12 minutes to obtain titanium dioxide / MXene / Co 3 o 4 composite electrode.

[0034] In this scheme, the titanium oxide is Ti 4 o 7 ; the Co 3 o 4 The average particle size of the MXene is 50nm; the above-mentioned MXene is purchased from Jilin Yiyi Technology Co., Ltd.; Co 3 o 4 purchased from Shanghai Aladdin Biochemical Technology Co., Ltd.

Embodiment 2

[0036] Step 1: Weigh 88% titanium dioxide, 10% MXene, 2% Co 3 o 4 , placed in a vortex shaker for 4 minutes to obtain 2 g of mixed powder.

[0037] Step 2: Put the mixed powder in a vacuum plasma sintering furnace, set the vacuum pressure to 55Pa, the sintering temperature to 600°C, the sintering pressure to 2MPa, and the sintering time to 15 minutes to obtain titanium dioxide / MXene / Co 3 o 4 composite electrode.

[0038] In this scheme, the titanium oxide is Ti 5 o 9 ; the Co 3 o 4 The average particle size of the MXene is 80nm; the above-mentioned MXene is purchased from Jilin Yiyi Technology Co., Ltd.; Co 3 o 4 purchased from Shanghai Aladdin Biochemical Technology Co., Ltd.

Embodiment 3

[0040] Step 1: Weigh 85% TiO2, 10% MXene, 5% Co 3 o 4 , placed in a vortex shaker for 2 minutes to obtain 2 g of mixed powder.

[0041] Step 2: Put the mixed powder in a vacuum plasma sintering furnace, set the vacuum pressure to 25Pa, the sintering temperature to 400°C, the sintering pressure to 1M Pa, and the sintering time to 10 minutes to obtain titanium dioxide / MXene / Co 3 o 4 composite electrode.

[0042] In this scheme, the titanium oxide is Ti 4 o 7 and Ti 5 o 9 Two mixtures; the Co 3 o 4 The average particle size of the MXene is 20nm; the above-mentioned MXene is purchased from Jilin Yiyi Technology Co., Ltd.; Co 3 o 4 purchased from Shanghai Aladdin Biochemical Technology Co., Ltd.

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Abstract

The invention discloses a titanium suboxide / MXene / Co3O4 composite electrode and a preparation method thereof. The titanium suboxide / MXene / Co3O4 composite electrode comprises the following raw materials in percentage by weight: 85%-90% of titanium suboxide, 5%-10% of MXene and 1%-5% of Co3O4. The titanium suboxide / MXene / Co3O4 composite electrode and the preparation method thereof have the beneficial effects that (1) a Co-O-Ti bond generated by titanium suboxide, MXene and Co3O4 is utilized to stably fix a cobalt element on a titanium suboxide substrate, so that cobalt ion leaching is effectively inhibited, the stability of the composite electrode is enhanced, and the activation performance of persulfate is improved; (2) the unique structure of the MXene is utilized to promote the dispersion of the nano Co3O4, and the interpenetration of the Co3O4 in the MXene is also utilized to inhibit the stacking of the MXene, so that the activation performance and the stability of the composite electrode on persulfate are further enhanced; and (3) the titanium suboxide is used as the substrate to combine MXene with Co3O4 at high temperature and high pressure, so that an effect similar to that of an adhesive is achieved, and the addition of the adhesive is avoided.

Description

technical field [0001] The invention relates to the field of electrochemical technology, specifically a titanium oxide / MXene / Co 3 o 4 Composite electrode and its preparation method. Background technique [0002] In recent years, industrialization and urbanization have driven rapid economic development. At the same time, water pollution has become increasingly serious, resulting in water resource shortages. Among them, among common water pollution, 1,4-dioxane is difficult to remove due to its ubiquity, high water solubility and resistance to biodegradation in commercial products. Common methods such as precipitation, coagulation and carbon adsorption have low removal efficiency and cannot effectively remove 1,4-dioxane. Therefore, the removal of 1,4-dioxane has become a key research issue in the field of refractory water treatment. . [0003] By activating persulfate to form strong oxidizing free radicals, the refractory 1,4-dioxane can be efficiently removed. At presen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/461C02F1/467C02F101/34
CPCC02F1/46109C02F1/4672C02F2001/46133C02F2101/34
Inventor 林辉李唯李威吕斯濠杨立辉
Owner DONGGUAN UNIV OF TECH
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