Zirconium organic frame material and preparation method and application thereof

A technology of organic framework and metal organic framework, which is applied in the field of new functionalized UiO-66 system zirconium organic framework catalyst material and its preparation, can solve the problems of performance degradation, inability to decompose water, attenuation, etc., and achieve excellent performance, stable structure, The effect of simple preparation method

Inactive Publication Date: 2017-04-26
CAPITAL NORMAL UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the current metal organic framework materials in the prior art are often only effective in the ultraviolet wavelength region, and the ability to decompose water to produce hydrogen in the visible light range is relatively weak, or even completely incapable of decomposing water. The ability to split water over time tends to decrease gradually, that is, decay over time

Method used

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  • Zirconium organic frame material and preparation method and application thereof
  • Zirconium organic frame material and preparation method and application thereof
  • Zirconium organic frame material and preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0034] (1) Synthesis of ligand 2,5-dimethylsulfide terephthalic acid

[0035]Weigh 57.5mg of 2,5-dimercaptoterephthalic acid in a 50ml single-necked flask, then add 20.0ml of acetone, stir and then add 207mg of K 2 CO 3 , and finally add 0.5ml CH dropwise while stirring 3 I liquid. Stir until the color changes from orange to thick yellow-white, and spin evaporate to obtain a white solid, then dissolve the white solid in deionized water, place in an ice-water bath, add concentrated hydrochloric acid dropwise to pH = 1, a large amount of yellow precipitate appears, and finally extract A yellow solid was obtained by filtration, and washed with a large amount of deionized water until pH = 7. The obtained yellow sample was dried in a vacuum oven at 60°C.

[0036] The proton nuclear magnetic spectrum data of the obtained 2,5-dimethyl sulfide terephthalic acid are as follows:

[0037] 1 H NMR (400MHz, deuterated DMSO): 7.74(s, 2H, CHAr), 2.40(s, 6H, CH 3 )

[0038] The hydrog...

Embodiment 2

[0043] (1) Synthesis of ligand 2,5-dimethylsulfide terephthalic acid

[0044] Weigh 57.5mg of 2,5-dimercaptoterephthalic acid in a 50ml single-necked flask, then add 20.0ml of acetone, stir and then add 207mg of K 2 CO 3 , and finally add 0.5ml CH dropwise while stirring 3 I liquid. Stir until the color changes from orange to thick yellow-white, and spin evaporate to obtain a white solid, then dissolve the white solid in deionized water, place in an ice-water bath and add concentrated hydrochloric acid dropwise to PH = 1, a large amount of yellow precipitate appears, and finally pump A yellow solid was obtained by filtration, and washed with a large amount of deionized water until pH = 7. The obtained yellow sample was dried in a vacuum oven at 60°C.

[0045] (2)UiO-66(Zr)-(SCH 3 ) 2 preparation of

[0046] Take 58.25mg of zirconium tetrachloride, 1.5ml of glacial acetic acid, and 15ml of DMF in a 50ml flask, and ultrasonically disperse until the zirconium tetrachloride...

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Abstract

The invention discloses a novel functionalized UiO-66 system zirconium organic frame catalyst material, a preparation method thereof and application of the catalyst material in the aspect of hydrogen generation through visible light catalytic water splitting. The preparation method of the zirconium organic frame catalyst material comprises the steps of 1 preparing a ligand 2,5-dimethyl sulfide terephthalic acid and 2 preparing a zirconium organic frame catalyst material (UiO-66(Zr)-(SCH3)2). The preparation method is simple and stable; the obtained zirconium organic frame catalyst material is stable in structure, can be used for the photoelectrode material for hydrogen generation through photoelectrochemical water splitting, and the performance is better than that of reported metal organic frame materials for hydrogen generation through photoelectrochemical water splitting. The material can be used for visible light catalytic hydrogen production, is excellent in performance and promotes application in clean energy and environment sustainable development.

Description

technical field [0001] The present invention relates to the field of chemical synthesis, especially the field of organometallic catalysts, specifically, a new type of functionalized UiO-66 system zirconium organic framework catalyst material and its preparation method and the application of the catalyst material in visible light catalytic cracking of water for hydrogen production . Background technique [0002] Metal-organic framework (MOF) materials are a kind of porous complex polymers, which are framework materials formed by using metal ions as nodes and organic ligands as framework supports. Such porous and crystalline complex materials have attracted widespread attention due to their superior properties over traditional complexes. The typical and key structural features of this material are ultra-high porosity and specific surface area. At the same time, their structures and functions are easily designed and regulated by selecting different metal ions and organic liga...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G83/00C01B3/04
CPCC01B3/042C01B2203/0277C01B2203/1041C08G83/008Y02E60/36
Inventor 万重庆王志鹏
Owner CAPITAL NORMAL UNIVERSITY
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