In-situ co-assembly synthesis adsorption-photocatalytic composite material based on UIO-66 and copper nanowires

A UIO-66, copper nanowire technology, applied in the field of composite materials, can solve the problems of no obvious improvement in hydrogen production activity, small pore size, insufficient adsorption strength, etc., to promote photoelectric separation efficiency and visible light absorption, strong adsorption capacity , the effect of improving electrical conductivity

Inactive Publication Date: 2017-09-15
SHANGHAI NORMAL UNIVERSITY +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the application of MOF also has certain limitations. For example, it is easy to collapse at a certain temperature, or the po

Method used

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  • In-situ co-assembly synthesis adsorption-photocatalytic composite material based on UIO-66 and copper nanowires
  • In-situ co-assembly synthesis adsorption-photocatalytic composite material based on UIO-66 and copper nanowires
  • In-situ co-assembly synthesis adsorption-photocatalytic composite material based on UIO-66 and copper nanowires

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Dissolve copper nanowires of different qualities in pure N,N-dimethylformamide solution to obtain solution A, first ultrasonically for 15 minutes and stir for 10 minutes to fully dissolve the copper nanowires, and then add p-benzene with a mass ratio of 1:1.3 Diformic acid and zirconium tetrachloride were successively dissolved in N,N-dimethylformamide solution A containing different masses of copper nanowires dissolved, all dissolved evenly after stirring and ultrasonication, and there was no precipitate at the bottom of the quartz tube, and then The solution was put into microwave at 120°C for reaction. The microwave heated up at 10°C / min and reacted for 30 minutes. If the reaction time is too long, the morphology of copper nanowires will be destroyed. If the reaction time is too short, the desired MOF cannot be synthesized. Then the product UIO-66-Cu is obtained after the reaction is finished. Figure 1 shows the FESEM spectra of UIO-66, copper nanowires and UIO-66-Cu...

Embodiment 2

[0032] The operation steps of Example 1 were repeated, except that the microwave reaction was performed for 35 minutes, and the result was similar to that of Example 1, but the morphology of copper nanowires was partially destroyed. The microstructure of the sample is consistent with that of Example 1. After adding copper nanowires, the crystallinity decreases, and the diffuse reflectance results show that the composite material sample has a visible light response.

Embodiment 3

[0034] The operation steps of Example 1 were repeated, except that during the microwave reaction, the temperature was raised for 10 minutes, and the reaction temperature was 110°C. The result was similar to that of Example 1, and the morphology of copper nanowires was mostly preserved. The microstructure of the sample is consistent with that of Example 1. After adding copper nanowires, the crystallinity decreases, and the diffuse reflectance results show that the composite material sample has a visible light response.

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Abstract

The invention discloses an in-situ co-assembly synthesis adsorption-photocatalytic composite material based on UIO-66 and copper nanowires. The composite material is prepared by the following steps: (1) preparing the copper nanowires by using a mature method in advance; (2) ultrasonically dissolving a certain amount of the copper nanowires in N,N-dimethyl formamide to obtain a solution A; (3) adding ligand-terephthalic acid used for synthesizing MOF into the solution A, carrying out ultrasonic treatment, and stirring to obtain a solution B; (4) adding a precursor of zirconium into the solution B, carrying out ultrasonic treatment, and stirring to obtain a solution C; (5) putting the solution C into microwave, and reacting for a period of time so as to obtain UIO-66-Cu.

Description

technical field [0001] The invention relates to a composite material combined with MOF and copper nanowires (NWS), in particular to an adsorption-photocatalytic composite material based on in-situ co-assembly of UIO-66 and copper nanowires. Background technique [0002] Metal-organic framework (MOF) is a new type of porous structure crystal, which is composed of metal ions or metal clusters, aromatic binary or polycarboxylic acids, and nitrogen-containing heterocyclic compounds. Its advantages are regular microporous structure and large specific surface area, and it has broad application prospects in heterogeneous catalysis, gas storage, gas adsorption and separation, etc. The problem that needs to be solved urgently in the prior art is the stability of MOF materials. In addition, there are not many reports on MOF photocatalysts, and there are even fewer reports on the application of carbon dioxide conversion. [0003] The structural units (metals and ligands) of MOFs and t...

Claims

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Application Information

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IPC IPC(8): B01J20/22B01J20/30B01J31/22
CPCB01J20/226B01J31/1691B01J35/004B01J2531/0213B01J2531/48
Inventor 李贵生王筱珺李茹萍曹英男李和兴
Owner SHANGHAI NORMAL UNIVERSITY
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