Preparation method of Pd/Co3O4/foamed nickel electrode materials

An electrode material, foamed nickel technology, applied in the field of preparation of Pd/Co3O4/foamed nickel electrode material, can solve the problems of irreversible harm, accumulated toxicity, chronicity and other problems of human and animals, reduce the probability of electrode side reactions, accelerate Degradation rate, effect of improving current efficiency

Active Publication Date: 2015-11-11
GUANGXI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although the content of brominated flame retardants in the environment is usually very low, the possibility of acute poisoning is very small, but this long-...

Method used

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  • Preparation method of Pd/Co3O4/foamed nickel electrode materials
  • Preparation method of Pd/Co3O4/foamed nickel electrode materials
  • Preparation method of Pd/Co3O4/foamed nickel electrode materials

Examples

Experimental program
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Effect test

Embodiment 1

[0026] Pd / Co 3 o 4 / The preparation process of foamed nickel electrode material is as follows figure 1 shown.

[0027] (1) Electrode pretreatment: First, cut the foamed nickel base material into a size of 3cm×5cm, place the cut foamed nickel base material in 1mol / L H 2 SO 4 or HNO 3 Medium acid treatment for 5 minutes to remove the oxide layer on the surface; then, the acid-treated nickel foam substrate was ultrasonicated in ethanol and deionized water for 15 minutes to remove the oil on the surface.

[0028] (2) Electrodeposition: with 0.01mol / L CoCl 2 and 0.1mol / L Na 2 SO 4 As an electrodeposition solution, an inert graphite electrode was used as an anode, and the pretreated nickel foam substrate was used as a cathode. Under the condition of a water bath at 60 ° C, a constant current of 5 mA was used for 30 min to obtain a Co / foam nickel electrode. The prepared Co / The nickel foam electrode is placed in an oven and dried at 80°C for 1 hour;

[0029] (3) Calcinatio...

Embodiment 2

[0032] Pd / Co 3 o 4 / The preparation process of foamed nickel electrode material is as followsfigure 1 shown.

[0033] (1) Electrode pretreatment: First, cut the foamed nickel base material into a size of 3cm×5cm, place the cut foamed nickel base material in 0.5mol / L H 2 SO 4 or HNO 3 Medium acid treatment for 8 minutes to remove the oxide layer on the surface; then, the acid-treated nickel foam substrate was ultrasonicated in ethanol and deionized water for 20 minutes to remove the oil on the surface.

[0034] (2) Electrodeposition: with 0.1mol / L CoCl 2 and 0.01mol / L Na 2 SO 4 As an electrodeposition solution, an inert graphite electrode is used as an anode, and the pretreated nickel foam substrate is used as a cathode. Under the condition of a water bath at 60 ° C, a constant current of 15 mA is used for 30 min to obtain a Co / foam nickel electrode. The prepared Co / The nickel foam electrode is placed in an oven and dried at 100°C for 0.5h;

[0035] (3) Calcination: ...

Embodiment 3

[0038] Pd / Co 3 o 4 / The preparation process of foamed nickel electrode material is as follows figure 1 shown.

[0039] (1) Electrode pretreatment: First, cut the foamed nickel base material into a size of 3cm×5cm, place the cut foamed nickel base material in 2mol / L H 2 SO 4 or HNO 3 Medium acid treatment for 3 minutes to remove the oxide layer on the surface; then, the acid-treated nickel foam substrate was ultrasonicated in ethanol and deionized water for 10 minutes to remove the oil on the surface.

[0040] (2) Electrodeposition: with 0.05mol / L Co(NO 3 ) 2 and 0.01mol / L NaNO 3 As an electrodeposition solution, an inert graphite electrode is used as an anode, and the pretreated nickel foam substrate is used as a cathode. Under the condition of a water bath at 80 °C, a constant current of 20 mA is used for electrodeposition for 20 minutes to obtain a Co / foam nickel electrode. The prepared Co / The nickel foam electrode is placed in an oven and dried at 100°C for 2 hou...

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Abstract

The invention relates to a method applicable to a palladium-modified metal electrode with foamed nickel materials as bases. The method comprises the steps that an oxidation layer and oil fouling on the surface of the foamed nickel base materials are removed; bivalent cobalt salt and sodium salt are used for preparing electro-deposition liquid, an inert graphite electrode is used a positive electrode, the foamed nickel base materials are used as a negative electrode, electro-deposition is performed with constant temperature and constant current for preparing a Co/foamed nickel electrode, and drying is performed; the Co/foamed nickel electrode is placed in a tube type resistance furnace, the temperature is increased at a constant speed till reaching the preset value, constant-temperature calcination is performed, and then the Co3O4/foamed nickel electrode can be obtained; and H2PdC14 impregnation-deposition liquid is prepared, the Co3O4/foamed nickel electrode is placed in the impregnation-deposition liquid, the impregnation-deposition liquid is shaked in a table concentrator till the impregnation-deposition liquid becomes colorless, and therefore a Pd/Co3O4/foamed nickel electrode is obtained. The hydrogen-evolution potential of the electrode can be lowered, the hydrogen production and storage capability of the system are improved, and it is ensued that electrocatalytic reduction and degradation are rapidly and efficiently performed on halogenated organic matter.

Description

technical field [0001] The invention belongs to the field of environmental protection and governance, in particular to a Pd / Co 3 o 4 / The preparation method of nickel foam electrode material. Background technique [0002] Brominated flame retardants are a class of brominated compounds widely used in plastics, electronic products and textile products. Due to their good flame retardancy, they are currently the most produced organic flame retardants in the world. Although the content of brominated flame retardants in the environment is usually very low, the possibility of acute poisoning is very small, but this long-term, low-level exposure mainly produces various chronic and cumulative toxicity, which often causes substantial harm to humans and animals. and irreversible harm. Therefore, it is necessary to study the treatment technology of this kind of substances. [0003] Electrochemical method is a traditional water treatment technology with promising applications due to ...

Claims

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Application Information

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IPC IPC(8): C25D3/12C25D5/50C02F1/461
Inventor 喻泽斌彭振波胡晓王莉
Owner GUANGXI UNIV
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