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Metal oxide/carbon material compound as well as preparation method and application thereof

A technology of oxides and carbon materials, applied in the field of electrochemistry, can solve the problems of difficult biodegradation, easy passivation, high concentration, etc., and achieve the effects of good electrocatalytic performance, abundant active sites, and large specific surface area

Inactive Publication Date: 2019-04-09
HEILONGJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] With the rapid development of industry, the amount of environmental sewage is increasing day by day, and the discharge of industrial wastewater is also increasing day by day, and the waste water has the characteristics of high toxicity, high concentration, and difficult biodegradation, making it difficult to treat. It is difficult to achieve satisfactory results, so how to effectively treat these wastewater is very important
[0003] In recent years, the use of electrochemical advanced oxidation technology to treat refractory wastewater has gradually attracted people's attention. By selecting electrode materials with catalytic activity, hydroxyl radicals are directly or indirectly generated during the electrode reaction process, thereby degrading pollutants. , the anode can be used to directly oxidize the pollutants, but this method not only requires the anode material to have an oxygen evolution overpotential, but also requires it to have high stability and corrosion resistance in wastewater. Oxygen overpotential, but easy to corrode, and easy to passivate when used

Method used

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  • Metal oxide/carbon material compound as well as preparation method and application thereof
  • Metal oxide/carbon material compound as well as preparation method and application thereof
  • Metal oxide/carbon material compound as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0127] Peel off the outer skin of the pomelo peel, save the spongy part in the middle, cut the part into small pieces, wash with deionized water, and dry in an oven at 80°C for later use;

[0128] Put the spare pomelo peel in a tubular muffle furnace, raise the temperature to 500°C at a heating rate of 5°C / min under the protection of nitrogen and keep it warm for 1h for pre-carbonization treatment, N 2 The flow rate is 60mL / min;

[0129] Wash the pre-carbonized carbon material with deionized water, dry it in an oven at 100 ° C, and then mix and impregnate it with KOH concentrated solution (concentration: 30%) at a mass ratio of 1:1.5, fully Place it for 24 hours after mixing;

[0130] The mixed material was dried in an oven at 100°C and then baked in a tubular muffle furnace at a firing temperature of 800°C with a heating rate of 5°C min –1 , the roasting time is 1h;

[0131] The activated sample uses 0.1mol L –1 The hydrochloric acid solution neutralizes the residual hydr...

Embodiment 2～5

[0139] The method used in Examples 2 to 5 is similar to that of Example 1, the difference is only that the added CoCl 2 ·6H 2 O is 0.01g, 0.03g, 0.07g and 0.09g respectively, the Co in the obtained complex 3 o 4 The contents are 1%, 3%, 7% and 9% respectively.

Embodiment 6～9

[0141] The method used in Examples 6-7 is similar to that of Example 1, the only difference being that the final sample is calcined and purified in a muffle furnace to obtain Co 3 o 4 / PC composites, the calcination temperatures were 350°C, 400°C, 500°C and 550°C, respectively.

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Abstract

The invention discloses a metal oxide / carbon material compound. A metal oxide in the compound is a transition metal oxide or a lanthanide series metal oxide, and a carbon material is porous carbon. Apreparation method of the compound comprises the steps of firstly preparing the carbon material, dissolving metal salt, adding the carbon material, adding a settling agent, stirring, carrying out after-treatment, and calcining, so as to obtain the metal oxide / carbon material compound. The complex can be used as a cathode material for degrading organic wastewater through electro-catalysis. The preparation method has the beneficial effects that the reaction process is easily controlled and operated, the raw materials are easily available, the productive rate is high, and the purification is easy.

Description

technical field [0001] The invention relates to the field of electrochemistry, in particular to a metal oxide / carbon material composite and its preparation method and application. Background technique [0002] With the rapid development of industry, the amount of environmental sewage is increasing day by day, and the discharge of industrial wastewater is also increasing day by day, and the waste water has the characteristics of high toxicity, high concentration, and difficult biodegradation, making it difficult to treat. It is difficult to achieve satisfactory results, so how to effectively treat these wastewater is very important. [0003] In recent years, the use of electrochemical advanced oxidation technology to treat refractory wastewater has gradually attracted people's attention. By selecting electrode materials with catalytic activity, hydroxyl radicals are directly or indirectly generated during the electrode reaction process, thereby degrading pollutants. , the an...

Claims

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Application Information

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IPC IPC(8): B01J23/75B01J37/03C02F1/461B01J37/08B01J37/02
CPCB01J23/75B01J37/0201B01J37/035B01J37/084C02F1/46104C02F2101/345
Inventor 蔡庄王鹏赵曦邹金龙代莹杨柳林宇慧
Owner HEILONGJIANG UNIV
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