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A preparation method of a bismuth-doped bimetallic sulfide electrode for electrocatalytic oxidation of urea

An electrocatalytic oxidation and bimetallic technology, applied in the field of nanomaterials, can solve the problem of high cost and achieve the effects of low raw material cost, good electrocatalytic performance and stability, high electrocatalytic activity and stability

Active Publication Date: 2022-01-11
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In order to overcome the problem of high cost of traditional urea oxidation electrocatalytic materials, the present invention provides a preparation method of a bismuth-doped bimetallic sulfide electrode for electrocatalytic oxidation of urea

Method used

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  • A preparation method of a bismuth-doped bimetallic sulfide electrode for electrocatalytic oxidation of urea
  • A preparation method of a bismuth-doped bimetallic sulfide electrode for electrocatalytic oxidation of urea
  • A preparation method of a bismuth-doped bimetallic sulfide electrode for electrocatalytic oxidation of urea

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] (1) Cut 1 cm * 3 cm foam nickel, with dilute hydrochloric acid, ethanol, deionized water to clean each 5 minutes, spare;

[0031] (2) Take a clean beaker, add 25ml to ion water, weigh 0.043 g Na 2 Bio 4 · 2h 2 O, 0.36g CO (NO 3 ) 2 · 6h 2 O and 0.36G Ni (NO 3 ) 2 · 6h 2 O Pour in deionized water, weigh 0.24 g 2-methylimidazole into a metal salt mixture, ultrasonic dissolution, pour in a 50 mL reaction kettle; the foam nickel after pre-treatment after step (1) is added to the reaction In the kettle, place the oven to 120 ° C, reactive 8h, and naturally fell to room temperature after the reaction is stopped; the foam nickel is removed, and the surface deposit is removed, and the surface deposit is removed, and 12 h is dried in vacuo at 60 ° C;

[0032] (3) Put the foam nickel after step (2) in N 2 After the atmosphere is raised to 300 ° C in the atmosphere to 300 ° C, it will be pushed into the tube furnace and heat it up to room temperature, so that BI-coni can be obtained. ...

Embodiment 2

[0045] (1) Cut 1 cm * 3 cm foam nickel, with dilute hydrochloric acid, ethanol, deionized water to clean each 5 minutes, spare;

[0046] (2) Take a clean beaker, add 25ml to ion water, weigh 0.043 g Na 2 Bio 4 · 2h 2 O, 0.42g CO (NO 3 ) 2 · 6h 2 O and 0.08G Ni (NO 3 ) 2 · 6h 2 O Pour in deionized water, weigh 0.24 g 2-methylimidazole into a metal salt mixture, ultrasonic dissolution, pour in a 50 mL reaction kettle; the foam nickel after pre-treatment after step (1) is added to the reaction In the kettle, the oven is placed to 110 ° C, the reaction is 10 h, and after the reaction is stopped to room temperature; the foam nickel is removed, and the surface deposit is placed in the deionized water, and the surface deposit is removed, and 12 h is dried in vacuo at 60 ° C;

[0047] (3) Put the foam nickel after step (2) in N 2 After the atmosphere, it is raised from 10 ° C / min to 200 ° C, and the crucible of 150 mg of sulfur will be pushed into the tube furnace and heat it up to room...

Embodiment 3

[0050] (1) Cut 1 cm * 3 cm foam nickel, with dilute hydrochloric acid, ethanol, deionized water to clean each 5 minutes, spare;

[0051] (2) Take a clean beaker, add 25ml to ion water, weigh 0.06 g of NA 2 Bio 4 · 2h 2 O, 0.36g CO (NO 3 ) 2 · 6h 2 O and 0.08G Ni (NO 3 ) 2 · 6h 2 O Pour in deionized water, weigh 0.24 g 2-methylimidazole into a metal salt mixture, ultrasonic dissolution, pour in a 50 mL reaction kettle; the foam nickel after pre-treatment after step (1) is added to the reaction In the kettle, the oven is placed to 180 ° C, the reaction is 6 h, and after the reaction is stopped to room temperature; remove the foam nickel, placed in the deionized water for 30 seconds, remove the surface deposit, and dry at 60 ° C for 12 h;

[0052] (3) Put the foam nickel after step (2) in N 2 After the atmosphere is 10 ° C / min, it will be pushed into the tube furnace and heat it up to room temperature, which is reduced to room temperature to heat up to room temperature. 2 S 4 / NF,...

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Abstract

The invention relates to the technical field of nanomaterials, in particular to a method for preparing a bismuth-doped bimetallic sulfide electrode for electrocatalytic oxidation of urea, comprising the following steps: (1) combining a cobalt source, a nickel source, a bismuth source and an organic compound with a The body is dissolved in deionized water to obtain a mixed solution, added to a conductive substrate, and subjected to a hydrothermal reaction to take out the conductive substrate, washed and dried; (2) Sulfide treatment in a nitrogen atmosphere to obtain bismuth-doped bimetallic sulfide urea oxidation Electrocatalyst. The invention has low cost of raw materials, simple synthesis process, easy to achieve reaction conditions, and the prepared self-supporting high-efficiency urea oxidation electrocatalytic material heterojunction nano-sheet array has uniform size, stable structure and uniform component distribution, and gives the material better performance. Electrocatalytic performance and stability; the urea oxidation electrocatalyst of the present invention is grown on a conductive substrate in situ, making it a flexible and self-supporting material, which can be directly used as a catalyst without coating on an electrode.

Description

Technical field [0001] The present invention relates to the field of nanomaterial technology, and more particularly to a method for preparing a bismuth doped bimetal sulfide electrode for electrocatalyzing urea. Background technique [0002] With the gradual increase in energy demand and environmental problems, high-efficiency hydrogen production techniques are necessary to clean, sustainable, and inexpensive hydrogen fuel transitions. Hydrogen is a clean environmental protection energy of a reserve, high quality energy density, has a good development prospect. [0003] In numerous hydrogen production methods, electrolytic water is more environmentally friendly and efficient. However, the anodic oxygen reactions (OER) are four electronics, and the reaction kinetics is very slow, resulting in higher over-potentials. This high over-potential limits a large-scale practical application of electrolytic water hydrogen. The electrolytic oxidation of substances such as methanol, ethanol,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25B11/091C25B3/07C25B3/09C25B3/23B82Y30/00B82Y40/00
CPCB01J27/043B01J37/10B01J37/20B82Y30/00B82Y40/00B01J35/33B01J35/40
Inventor 曹澥宏俞林海刘文贤毋芳芳
Owner ZHEJIANG UNIV OF TECH
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