Preparation and application of copper based metal organic framework material

An organic framework and metal-based technology is applied in the field of metal-organic framework materials with high-efficiency hydrogen production performance and its preparation. high rate effect

Inactive Publication Date: 2017-12-22
CHINA THREE GORGES UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Electrocatalysis is a simple and efficient way to produce hydrogen, and Pt metal is an efficient catalyst for hydrogen production, but its expensive price and scarce storage capacity also hinder its wide application

Method used

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  • Preparation and application of copper based metal organic framework material
  • Preparation and application of copper based metal organic framework material
  • Preparation and application of copper based metal organic framework material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Take 10 mg organic ligand H 4 Ddpb, 20mg of copper nitrate pentahydrate was dissolved in 1mL of N'N-dimethylformamide and 4mL of deionized water, and then dropwise added concentrated hydrochloric acid with a mass fraction of 36% to make the solution pH 3, carry out Ultrasound for 30 minutes, and react at a constant temperature of 80°C for 36 hours. After the reaction, take it out and cool it down to room temperature to obtain a blue transparent block crystal, that is, 1,3-bis(3',5'-dicarboxyphenyl)benzene transition metal copper-based metal Organic framework materials. Depend on Figure 4 It can be seen that the powder diffraction peaks of the prepared samples are highly consistent with those of the simulated Cu-MOFs, and the obtained samples are Cu-MOFs with high purity.

Embodiment 2

[0037] Take 10 mg of the prepared Cu-MOFs, add 0.2 mL of Nafion and 1.8 mL of deionized water for ultrasonication for 30 min to completely disperse and obtain a suspension, then pipette 5 μL of the above suspension with a pipette gun and add dropwise to The glassy carbon electrode is dried at room temperature to obtain an electrode modified with a 1,3-bis(3',5'-dicarboxyphenyl)benzene transition metal copper-based metal organic framework material. As a comparison, the commercial Pt / C was also operated as the working electrode for the subsequent electrocatalytic performance test. Depend on Figure 7 It can be seen that the material has efficient electrocatalytic hydrogen evolution performance.

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Abstract

Preparation of a copper based metal organic framework material which has electrocatalytic hydrogen evolution performance. The invention belongs to the technical field of crystalline materials. The chemical molecular formula of the material is [Cu3(Ddpb)1.5(H2O)3], wherein H4Ddpb refers to 1,3-bis(3',5'-dicarboxylphenyl)benzene; one Cu<2+> is connected to four oxygen atoms of carboxyl groups of the H4Ddpb ligand and is connected to another Cu<2+> to form a binuclear wheel paddle structure. A two-dimensional surface being (10.0351*9.9731) Angstrom<2> is formed on the b-c surface of the crystalline material, and then through connection by means of extension of the organic ligand, a three-dimensional network framework being 68.5% in porosity is formed. The metal organic framework material is simple in synthesis process, is high in crystallization purity, has novel structure and large porosity, and has high-effective electrocatalytic hydrogen evolution performance.

Description

technical field [0001] The invention belongs to the technical field of crystalline materials, and in particular relates to a metal-organic framework material with high-efficiency hydrogen production performance and a preparation method thereof. Background technique [0002] With the continuous development of society, the increase in the consumption of fossil fuels has gradually led to the deterioration of the earth's environment and the depletion of renewable resources. Due to environmental pressure, people's demand for new energy systems is becoming more and more urgent. Green, clean and efficient renewable energy has become a focus of attention. Electrocatalysis is a simple and efficient way to produce hydrogen, and Pt metal is an efficient catalyst for hydrogen production, but its expensive price and scarce storage capacity also hinder its wide application. Therefore, it is an inevitable trend to find an efficient, cheap and non-precious metal hydrogen evolution catalyst...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C63/331C07C51/41C07F1/08B01J31/22C25B1/02C25B11/06
CPCB01J31/1691B01J31/2213C07B2200/13C07C51/418C07C63/331C07F1/005C25B1/02C25B11/095
Inventor 吴亚盘王萧李东升赵君董文文吴涛张其春
Owner CHINA THREE GORGES UNIV
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