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Adsorption-photocatalysis composite material synthesized on basis of in-situ synchronous assembly of UIO-66-NH2 and graphene

A UIO-66-NH2, composite material technology, applied in the field of adsorption-photocatalytic composite materials, can solve the problems of few reports, poor stability and difficult process of MOF photocatalysts, and achieve strong controllability of reaction conditions and high thermal stability. , the effect of increasing dispersion

Inactive Publication Date: 2017-08-11
SHANGHAI NORMAL UNIVERSITY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In addition, there are not many reports on MOF photocatalysts, and even fewer reports on carbon dioxide conversion combined with graphene
The problem that urgently needs to be solved in the prior art is that the preparation process of MOF materials takes a long time, the process is difficult to control, and the shortcomings of poor stability

Method used

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  • Adsorption-photocatalysis composite material synthesized on basis of in-situ synchronous assembly of UIO-66-NH2 and graphene
  • Adsorption-photocatalysis composite material synthesized on basis of in-situ synchronous assembly of UIO-66-NH2 and graphene
  • Adsorption-photocatalysis composite material synthesized on basis of in-situ synchronous assembly of UIO-66-NH2 and graphene

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Dissolve graphene of different qualities in N,N-dimethylformamide prepared in advance, and ultrasonicate it for 30 minutes to dissolve graphene in the solution to obtain solution A; then weigh a certain amount of 2-amino-p- Dissolve phthalic acid in solution A, sonicate for 10 minutes, stir for 5 minutes to obtain solution B; then weigh a certain amount of zirconium tetrachloride, the precursor used in the synthesis of MOF, dissolve it in solution B, sonicate for 10 minutes, and stir for 5 minutes to obtain solution C ; Solution C was placed in the microwave to react at 120°C, and the microwave was heated at 10°C / min, and the reaction was 40min. After the end, the product UIO-66-NH was obtained 2 -GR. The product obtained above was centrifuged and washed to obtain UIO-66-NH 2 -Composite material of GR. Accompanying drawing 1 has provided the UIO-66-NH that example 1 gains in this case 2 , GR and UIO-66-NH 2 - FESEM map of GR. Attached Figure 2 shows the case UIO-66...

Embodiment 2

[0032] Repeat the operation steps of Example 1, the difference is that during the microwave reaction, the temperature is raised for 10 minutes, and the reaction is 30 minutes. The result is similar to Example 1, and UIO-66-NH is relatively uniformly dispersed on the graphene 2 . The microstructure of the sample is consistent with that of Example 1, the crystallinity is consistent with that of Example 1, and the diffuse reflectance results show that the composite material sample has a visible light response.

Embodiment 3

[0034] Repeat the operation steps of Example 1, the difference is that during the microwave reaction, the temperature is raised for 10 minutes, and the reaction is 35 minutes. The result is similar to that of Example 1. UIO-66-NH is more uniformly dispersed on the graphene 2 . The microstructure of the sample is consistent with that of Example 1, the crystallinity is consistent with that of Example 1, 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 adsorption-photocatalysis composite material synthesized on basis of in-situ synchronous assembly of UIO-66-NH2 and graphene (GR). The composite material is prepared by following steps: (1), weighing a certain amount of GR, dissolving the same in N, N-dimethyl formamide prepared in advance, and performing ultrasonic treatment to enable GR to be dissolved in a solution to obtain a solution A; (2), weighing a certain amount of 2-amino-terephthalic acid, dissolving the same in the solution A, ultrasonically treating, and stirring to obtain a solution B; (3), weighing a certain amount of a precursor, zirconium tetrachloride used for synthesizing MOF, dissolving the precursor in the solution B, ultrasonically treating, and stirring to obtain a solution C; (4), putting the solution C in microwaves for reaction for a period of time to obtain a product; (5), centrifuging and washing the product to obtain the composite material of UIO-66-NH2 and GR.

Description

technical field [0001] The invention relates to a composite material combined with MOF and graphene, specifically a UIO-66-NH based 2 In situ co-assembly with graphene to synthesize highly dispersed adsorption-photocatalytic composites. 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. [0003] The structural units (metals and ligands) of MOFs and the combination between structural units determine the size, shape, spatial structure, and chemical stability of the pores. Therefore, MOFs can be used as molecular sieves to screen out molecules of a specific size. At the same time, modulating ...

Claims

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Application Information

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IPC IPC(8): B01J20/22B01J20/30B01J31/16
CPCB01J20/20B01J20/226B01J31/1691B01J37/346B01J35/39
Inventor 李贵生王筱珺李茹萍曹英男李和兴
Owner SHANGHAI NORMAL UNIVERSITY
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