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CuS@Ni(OH)2 double-layer structure composite cube

A double-layer structure and cube technology, applied in the direction of electrodes, electrolysis process, electrolysis components, etc., can solve the problems of poor conductivity utilization, etc., and achieve the effect of short reaction cycle, stable structure and environmental friendliness

Pending Publication Date: 2021-11-05
南京医电应用科技研究院有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] Transition metal oxides / transition metal hydroxides (TMO / TMH) with hollow nanostructures have shown application potential and value in the field of electrocatalysis due to their high electrooxidative activity, excellent electrochemical stability and good kinetic properties, but Poor electrical conductivity still limits its further practical utilization
Modification of highly conductive nano-hollow transition metal sulfides (TMS) inside the TMO / TMH hollow structure not only significantly adjusts the conductivity of TMO / TMH, but also further enhances the electrocatalytic activity, but this method has not been reported in the field of electrochemical sensors.

Method used

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  • CuS@Ni(OH)2 double-layer structure composite cube
  • CuS@Ni(OH)2 double-layer structure composite cube
  • CuS@Ni(OH)2 double-layer structure composite cube

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Weigh 100mg Cu 2 O cubic template and 35mg nickel chloride hexahydrate were dispersed in 100mL ethanol / deionized water mixed solution (volume ratio 1:1), ultrasonicated for 8 minutes; 3.3g polyvinylpyrrolidone (Mw=40,000) was added to the above solution, and magnetically stirred 30 minutes; 40mL sodium thiosulfate pentahydrate solution (1M) was added dropwise to the above solution, centrifuged after 2 minutes of reaction to obtain Cu 2 O@Ni(OH) 2 Composite structure; the collected precipitate was dispersed in a mixed solution of ethanol / deionized water, then 20 mL of sodium sulfide solution (0.086M) was added dropwise, and centrifuged after 10 minutes to obtain Cu 2 O@CuS@Ni(OH) 2 The composite structure was then dispersed in ethanol / deionized water mixture; finally, the remaining Cu 2 The O template was removed, and the precipitate was centrifuged, washed 5 times with water, ethanol / deionized water mixture and ethanol, and dried in an oven to obtain CuS@Ni(OH) 2 Do...

Embodiment 2

[0028] Weigh 100mg Cu 2 O cubic template and 35mg nickel chloride hexahydrate were dispersed in 100mL ethanol / deionized water mixed solution (volume ratio 1:1), ultrasonicated for 8 minutes; 3.3g polyvinylpyrrolidone (Mw=40,000) was added to the above solution, and magnetically stirred 30 minutes; 40mL sodium thiosulfate pentahydrate solution (0.6M) was added dropwise to the above solution, centrifuged after 2 minutes of reaction to obtain Cu 2 O@Ni(OH) 2 Composite structure; the collected precipitate was dispersed in a mixed solution of ethanol / deionized water, then 20 mL of sodium sulfide solution (0.086M) was added dropwise, and centrifuged after 5 minutes to obtain Cu 2 O@CuS@Ni(OH) 2 The composite structure was then dispersed in ethanol / deionized water mixture; finally, the remaining Cu 2 The O template was removed, and the precipitate was centrifuged, washed with water, ethanol / deionized water mixture and ethanol 5 times each, and dried in an oven to obtain CuS@Ni(OH)...

Embodiment 3

[0030] Weigh 100mg Cu 2 O cubic template and 35 mg of nickel chloride hexahydrate were dispersed in 100 mL of ethanol / deionized water mixed solution (volume ratio 2:1), ultrasonicated for 10 minutes; 3.3 g of polyvinylpyrrolidone (Mw=58,000) was added to the above solution, and magnetically stirred 30 minutes; 40mL sodium thiosulfate pentahydrate solution (0.6M) was added dropwise to the above solution, centrifuged after 5 minutes of reaction to obtain Cu 2 O@Ni(OH) 2 Composite structure; the collected precipitate was dispersed in a mixed solution of ethanol / deionized water, then 20 mL of sodium sulfide solution (0.086M) was added dropwise, and centrifuged after 10 minutes to obtain Cu 2 O@CuS@Ni(OH) 2 The composite structure was then dispersed in ethanol / deionized water mixture; finally, the remaining Cu 2 The O template was removed, and the precipitate was centrifuged, washed with water, ethanol / deionized water mixture and ethanol 5 times each, and dried in an oven to obt...

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Abstract

The invention discloses a nano hollow CuS@Ni(OH)2 double-layer structure composite cube. An internal hollow structure is constructed by using CuS nanosheets, and an external hollow structure is constructed by using Ni(OH)2 nanoparticles; and the preparation method is simple and easy to operate, short in reaction period, environment-friendly and low in cost. The synthesized CuS / Ni(OH)2 composite material is uniform in particle size, stable in structure and reliable in performance. The double-layer hollow structure can increase the specific surface area of the material, more catalytic active sites are exposed, and electrocatalytic oxidation-reduction reaction of adsorption molecules on the surface of an electrode is facilitated.

Description

technical field [0001] The invention relates to the technical field of electrocatalytic materials, in particular to a CuS@Ni(OH)2 double-layer double-layer structure composite cube. Background technique [0002] Transition metal oxides / transition metal hydroxides (TMO / TMH) with hollow nanostructures have shown application potential and value in the field of electrocatalysis due to their high electrooxidative activity, excellent electrochemical stability and good kinetic properties, but The poor electrical conductivity still limits its further practical utilization. Modification of highly conductive nano-hollow transition metal sulfides (TMS) inside the TMO / TMH hollow structure not only significantly adjusts the conductivity of TMO / TMH, but also further enhances the electrocatalytic activity, but this method has not been reported in the field of electrochemical sensors. Contents of the invention [0003] One of the purposes of the present invention is to provide a nano-hol...

Claims

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Application Information

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IPC IPC(8): C25B11/091
CPCC25B11/091
Inventor 赵焱杨桐
Owner 南京医电应用科技研究院有限公司
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