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Preparation method and application of MOF catalyst with gluconic acid enhanced catalytic activity

A technology of gluconic acid and catalytic activity, which is applied in the fields of metal organic framework materials, nanomaterials, and nanocatalysis, can solve the problems of high cost and unreported oxygen evolution performance, and achieves high product preparation efficiency, simple process and easy industrialization. Effect

Inactive Publication Date: 2019-01-01
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Iridium dioxide (IrO 2 ) and ruthenium dioxide (RuO 2 ) is a component with good performance in the current oxygen evolution catalyst, but the cost is relatively high. Therefore, it is an opportunity and a challenge to develop a non-precious metal oxygen evolution catalyst with high efficiency, low price and abundant earth content, and to reduce the electricity consumption of oxygen evolution
[0005] At present, as far as we know, there is no report on the oxygen evolution performance of doping gluconic acid on this basis.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Example 1 A preparation method of MOF catalyst with gluconic acid enhanced catalytic activity

[0025] Blend 0.16 g of sodium gluconate with 4.0 mL of water, add 0.05 mL of nitric acid into the mixed solution after stirring, and obtain gluconic acid solution after stirring evenly;

[0026] 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;

[0027] The two solutions were mixed and ultrasonicated for 2 min; 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. , to synthesize nickel gluconate-nickel isophthalate / NiF composite material; activate the obtained composite material at 85℃ for 4h, and prepare MOF catalyst with enhanced catalytic activity of gluconic acid;

[0028] The activated nick...

Embodiment 2

[0031] Example 2 Preparation method of MOF catalyst with enhanced catalytic activity by gluconic acid

[0032] Blend 0.22 g of sodium gluconate with 5.0 mL of water, add 0.10 mL of nitric acid into the mixed solution after stirring, and obtain gluconic acid solution after stirring evenly;

[0033] 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;

[0034]The two solutions were mixed and ultrasonicated for 2.5 min; 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. , to synthesize nickel gluconate-nickel isophthalate / NiF composite material; activate the obtained composite material at 85℃ for 4h, and prepare MOF catalyst with enhanced catalytic activity of gluconic acid;

[0035] The activated ni...

Embodiment 3

[0038] Example 3 Preparation method of MOF catalyst with enhanced catalytic activity by gluconic acid

[0039] Blend 0.28 g of sodium gluconate with 6.0 mL of water, add 0.15 mL of nitric acid into the mixed solution after stirring, and obtain gluconic acid solution after stirring evenly;

[0040] 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;

[0041] The two solutions were mixed and ultrasonicated for 3 min; 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. , to synthesize nickel gluconate-nickel isophthalate / NiF composite material; the obtained composite material was activated at 85°C for 4h, and the MOF catalyst with enhanced catalytic activity of gluconic acid was prepared.

[0042] Th...

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Abstract

The invention discloses a preparation method of an MOF catalyst with gluconic acid enhanced catalytic activity and application of oxygen evolution in electrolysed water based on the catalyst and belongs to the technical field of nano catalysis, nano materials and metal organic framework materials. The preparation method comprises the main steps: blending a trimesic acid solution and a nickel nitrate solution under room temperature, adding a prepared gluconic acid solution, utilizing a mixed solution as electrolyte to be deposited on foamed nickel and activating to obtain a nickel gluconate-trimesic nickel composite catalyst, namely the MOF catalyst with the gluconic acid enhanced catalytic activity. The catalyst has the advantages of low preparation raw material cost, simple preparation technology, low reaction energy consumption and industrial application prospect. The catalyst can be applied to efficiently catalyzing oxygen evolution of electrolysed water and has good oxygen evolution electrocatalytic activity and electrochemical stability.

Description

technical field [0001] The invention relates to a preparation method of a MOF catalyst with enhanced catalytic activity by gluconic acid and the application of electrolysis of water and oxygen evolution based on the catalyst, belonging to the technical fields of nano-catalysis, nano-materials and metal-organic framework materials. Background technique [0002] The rapid development of modern society has caused a huge demand for environmentally friendly and renewable energy hydrogen. As an ideal energy source, it is proposed to become the main energy source in the future world and belongs to the secondary energy source. Today, hydrogen is produced primarily through steam methane reforming of natural gas (i.e., the reaction between water and methane to form H 2 and CO 2 ). Therefore, the production of hydrogen is now accompanied by a series of greenhouse effects, which are neither regenerative nor carbon neutral. Compared with hydrogen production by reforming, which is wide...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/22C25B11/06C25B1/04
CPCC25B1/04B01J31/2213B01J2531/0213B01J2531/0241B01J2531/847C25B11/095B01J35/33Y02E60/36
Inventor 赵璐王志玲李辉
Owner UNIV OF JINAN
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