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Preparation method and application of Ni-MOF/NiF bifunctional catalyst for simultaneously preparing hydrogen and glucaric acid

A bifunctional catalyst, glucaric acid technology, applied in the fields of nanomaterials, nanocatalysis, and metal organic framework materials, can solve the problems of poor conductivity, unreported MOF, poor stability, etc., and achieve excellent conductivity and favorable charge Good transmission and stability

Inactive Publication Date: 2019-04-26
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, MOFs catalysts usually need to be firmly attached to current collectors using binders, resulting in poor conductivity and poor stability.
More importantly, MOFs with dual functions of HER and electrochemical one-step have not been reported yet.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Example 1 A preparation method of Ni-MOF / NiF bifunctional catalyst for simultaneously preparing hydrogen and glucaric acid

[0024] Blend 0.20 g isophthalic acid, 0.35 g nickel nitrate and 4.0 mL N,N-dimethylformamide, and after ultrasonication for 1 min, a green clear solution is obtained;

[0025] In this solution, the activated nickel foam NiF with an area of ​​1 cm×1 cm was used as the working electrode, the platinum sheet was used as the counter electrode, and the calomel electrode was used as the reference electrode. Composite Ni-MOF / NiF material on nickel foam; the obtained Ni-MOF / NiF material was activated at 85°C for 4 hours to obtain an activated Ni-MOF / NiF material, that is, Ni-MOF / NiF material that simultaneously produces hydrogen and glucaric acid. MOF / NiF bifunctional catalyst;

[0026] The activated foamed nickel is made by ultrasonicating the foamed nickel in acetone, absolute ethanol and distilled water for 2 min successively, washing and removing surf...

Embodiment 2

[0029] Example 2 A preparation method of Ni-MOF / NiF bifunctional catalyst for simultaneously preparing hydrogen and glucaric acid

[0030] Blend 0.21 g isophthalic acid, 0.36 g nickel nitrate and 5.0 mL N,N-dimethylformamide, and after ultrasonication for 1 min, a green clear solution is obtained;

[0031] In this solution, the activated nickel foam NiF with an area of ​​1 cm×1 cm was used as the working electrode, the platinum sheet was used as the counter electrode, and the calomel electrode was used as the reference electrode. Composite Ni-MOF / NiF material on nickel foam; the obtained Ni-MOF / NiF material was activated at 85°C for 4 hours to obtain an activated Ni-MOF / NiF material, that is, Ni-MOF / NiF material that simultaneously produces hydrogen and glucaric acid. MOF / NiF bifunctional catalyst;

[0032] The activated foamed nickel is obtained by ultrasonicating the foamed nickel in acetone, absolute ethanol and distilled water for 3 min successively, washing and removing su...

Embodiment 3

[0035] Example 3 A preparation method of Ni-MOF / NiF bifunctional catalyst for simultaneously preparing hydrogen and glucaric acid

[0036] Blend 0.22 g isophthalic acid, 0.37 g nickel nitrate and 6.0 mL N,N-dimethylformamide, and after ultrasonication for 1 min, a green clear solution is obtained;

[0037] In this solution, the activated nickel foam NiF with an area of ​​1 cm×1 cm was used as the working electrode, the platinum sheet was used as the counter electrode, and the calomel electrode was used as the reference electrode. Composite Ni-MOF / NiF material on nickel foam; the obtained Ni-MOF / NiF material was activated at 85°C for 4 hours to obtain an activated Ni-MOF / NiF material, that is, Ni-MOF / NiF material that simultaneously produces hydrogen and glucaric acid. MOF / NiF bifunctional catalyst;

[0038] The activated nickel foam is obtained by ultrasonicating the nickel foam in acetone, absolute ethanol and distilled water for 4 min, washing and removing surface impuritie...

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PUM

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Abstract

The invention discloses a preparation method of a Ni-MOF / NiF bifunctional catalyst for simultaneously preparing hydrogen and glucaric acid and application of the catalyst in bifunctional electrocatalysis, and belongs to the technical fields of nano-catalysis, nano materials and metal organic framework object materials. The preparation method comprises the following main steps: taking a benzenetricarboxylic acid solution and a nickel nitrate solution as raw materials; carrying out room temperature electrodeposition on Ni-MOF to obtain foamed nickel NiF; activating to obtain the Ni-MOF / NiF catalyst. The cost of raw materials for preparing the catalyst is low; a preparation process has the advantages of simplicity, low reaction energy consumption and industrial application prospect. The catalyst is used for efficient catalytic electrolysis water hydrogen evolution and efficient oxidation of gluconic acid into the glucaric acid, and has the advantages of high electrocatalytic activity, high electrochemical stability and the like.

Description

technical field [0001] The invention relates to a preparation method of a bifunctional catalyst for simultaneous preparation of hydrogen and glucaric acid and the application of the catalyst to simultaneously electrolyze water for hydrogen evolution and organic matter oxidation, and belongs to the technical fields of nano-catalysis, nano-materials, and metal-organic framework materials. Background technique [0002] Hydrogen has high combustion energy and produces water, so hydrogen is recognized as a clean energy. Electrochemical water splitting can produce hydrogen gas, and the water splitting reaction involves two half-reactions: hydrogen evolution reaction (HER) and oxygen evolution reaction (OER). However, the OER reaction requires a high overpotential and generates high power consumption due to O-O bond formation and multiple proton-coupled electron transfer steps. Although great efforts have been made in this technical field, the expensive and scarce resources of IrO...

Claims

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Application Information

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IPC IPC(8): B01J31/28B01J35/02B01J35/10C25B1/04C25B3/02C25B11/06C25B3/23
CPCC25B1/04C25B11/04B01J31/28C25B3/23B01J35/33B01J35/61B01J35/40Y02E60/36
Inventor 赵璐王志玲
Owner UNIV OF JINAN
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