V-FeS/IF electrocatalytic material and preparation method thereof

An electrocatalytic material, v-fes technology, applied in the field of V-FeS/IF electrocatalytic material and its preparation, can solve the problems of low content, high price, hindering the development and application of precious metal-based catalysts, etc., and achieves simple process and low cost. Low, mild reaction conditions

Inactive Publication Date: 2021-11-16
SHAANXI UNIV OF SCI & TECH
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Problems solved by technology

Electrocatalytic water splitting is a promising and reliable technology for sustainable hydrogen production, but the traditional noble metal-based electrocatalysts have good electrocatalytic activity but are expensive due to their low

Method used

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  • V-FeS/IF electrocatalytic material and preparation method thereof
  • V-FeS/IF electrocatalytic material and preparation method thereof
  • V-FeS/IF electrocatalytic material and preparation method thereof

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preparation example Construction

[0024] The present invention adopts a simple one-step hydrothermal method to synthesize a vanadium-doped ferrous sulfide (V-FeS / IF) electrocatalytic material loaded on foam iron with high-efficiency hydrogen evolution, and the synthesized V-FeS / IF electrocatalytic material The structure is controllable, and it exhibits good HER electrocatalytic performance in alkaline solution. The preparation method of the V-FeS / IF electrocatalytic material comprises the following steps:

[0025] ① Weigh 200-600 mg of sodium metavanadate (NaVO 3 ) and 350-650 mg of thioacetamide (TAA), of which, sodium metavanadate (NaVO 3 ) and thioacetamide (TAA) in a molar ratio of 1: (1 to 5) for mixing to obtain a mixture, and then add the mixture to a mixed solution of absolute ethanol and isopropanol, wherein absolute ethanol and isopropanol The volume ratio of alcohol is 1: (0-4), and stirred for 20-60 minutes to form a uniformly mixed solution A.

[0026] ② Add 10-100 mg of polyvinylpyrrolidone to...

Embodiment 1

[0034] ①Weigh 243mg of sodium metavanadate (NaVO 3 ) and 601 mg of thioacetamide (TAA), of which sodium metavanadate (NaVO 3 ) and thioacetamide (TAA) were mixed at a molar ratio of 1:4, and then the mixture was added to only 25ml of absolute ethanol as a solvent, and stirred for 20min to form a uniformly mixed solution A.

[0035] ② Add 10 mg of polyvinylpyrrolidone to the uniformly mixed solution A, and stir it magnetically for 1 hour to obtain solution B.

[0036]③ Pour the solution B into a polytetrafluoroethylene-lined autoclave, keeping the volume filling ratio at 50%.

[0037] ④Take a 500mL beaker, cut the foam iron into a block of 1cm×5cm, put the cut foam iron into the beaker, pour the acetone solution submerged in the foam iron, ultrasonicate for 10min, then pour out the acetone solution, Pour into the beaker the HCl solution (3mol / L) that has not passed the foam iron, and ultrasonic treatment for 15min, then pour out the HCl solution, then pour the deionized water...

Embodiment 2

[0042] ① Weigh 305 mg of sodium metavanadate (NaVO 3 ) and 563mg of thioacetamide (TAA), of which sodium metavanadate (NaVO 3 ) and thioacetamide (TAA) in a molar ratio of 1:3, then the mixture was added to a mixed solvent of 6ml absolute ethanol and 24ml isopropanol, wherein the volume ratio of absolute ethanol and isopropanol was 1:4, stirred for 60 minutes to form a uniformly mixed solution A.

[0043] ② Add 100 mg of polyvinylpyrrolidone to the uniformly mixed solution A, and stir it magnetically for 5 hours to obtain solution B.

[0044] ③ Pour the solution B into a polytetrafluoroethylene-lined autoclave, keeping the volume filling ratio at 60%.

[0045] ④Take a 500mL beaker, cut the foam iron into a block of 1cm×5cm, put the cut foam iron into the beaker, pour the acetone solution submerged in the foam iron, ultrasonicate for 30min, then pour out the acetone solution, Pour into the beaker the HCl solution (6mol / L) that has not passed the foam iron, and ultrasonic tre...

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Abstract

The invention discloses a V-FeS/IF electro-catalytic material and a preparation method thereof, and belongs to the technical field of electro-catalytic materials. The preparation method comprises the following steps: uniformly dispersing sodium metavanadate and thioacetamide in a dispersion liquid to obtain a solution A; uniformly dispersing polyvinylpyrrolidone in the solution A to obtain a solution B; firstly, immersing the foam iron into acetone for ultrasonic treatment, then immersing into an HCl solution for ultrasonic treatment, then continuously immersing into water for ultrasonic treatment, and finally alternately carrying out ultrasonic treatment by using water and ethanol; after the ultrasonic treatment is finished, drying to obtain pretreated foam iron; and carrying out a hydrothermal reaction on the pretreated foam iron and the solution B, naturally cooling after the reaction is finished, collecting a solid product, washing the obtained solid product, and drying to obtain the V-FeS/IF electro-catalytic material. The V-FeS/IF electro-catalytic material prepared by the preparation method disclosed by the invention is controllable in structure and shows excellent HER electro-catalytic performance in an alkaline solution.

Description

technical field [0001] The invention belongs to the technical field of electrocatalytic materials, and relates to a V-FeS / IF electrocatalytic material and a preparation method thereof. Background technique [0002] From the first industrial revolution to today, technology has been updated again and again, and the speed of social development is getting faster and faster, so that more energy is needed to promote social development. However, the most important energy source so far has always been non-renewable fossil energy in the short term, and this type of fossil energy will also decompose and emit environmentally harmful substances during use, which has caused us to face serious environmental pollution for a long time question. This series of problems has attracted widespread attention around the world. Finding renewable, clean, environmentally friendly and efficient new energy sources to replace traditional fossil energy sources with limited reserves and unenvironmental p...

Claims

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Application Information

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IPC IPC(8): C25B11/091C25B11/031C25B11/061C25B11/054C25B1/04
CPCC25B11/091C25B11/031C25B11/061C25B11/054C25B1/04Y02E60/36
Inventor 黄剑锋徐国婷曹丽云冯亮亮杨丹冯永强
Owner SHAANXI UNIV OF SCI & TECH
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