A copper-coordinated porous polymer, preparation method and application

A porous polymer, polymer technology, applied in organic compound/hydride/coordination complex catalysts, chemical instruments and methods, carbon monoxide, etc. Porosity, good reproducibility

Active Publication Date: 2020-07-28
YUNNAN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are few reports on the application of triazole copper coordination polymers in the photocatalytic reduction of carbon dioxide.

Method used

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  • A copper-coordinated porous polymer, preparation method and application
  • A copper-coordinated porous polymer, preparation method and application
  • A copper-coordinated porous polymer, preparation method and application

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] 11.31 mg (0.1 mmol) 1,2,4-triazole-3-carboxylic acid, 12.81 mg (0.1 mmol) 5-amino-1,2,4-triazole-3-carboxylic acid, 34.1 mg ( 0.2mmol) of CuCl 2 2H 2 O was added to 10 mL of distilled water and mixed evenly; the resulting mixture was sealed and subjected to hydrothermal reaction at 150°C for 48 hours, and then cooled to room temperature at a rate of 5°C per hour to obtain dark green blocky transparent crystals, which were washed with ethanol After washing and drying naturally, the single crystal sample of the porous coordination polymer was prepared. The porous coordination polymer can be prepared by vacuum drying at 110°C.

Embodiment 2

[0035] 11.31 mg (0.1 mmol) 1,2,4-triazole-3-carboxylic acid, 12.81 mg (0.1 mmol) 5-amino-1,2,4-triazole-3-carboxylic acid, 34.1 mg ( 0.2mmol) of CuCl 2 2H 2 O was added to 10mL of distilled water and mixed evenly; the resulting mixture was sealed and subjected to hydrothermal reaction at 160°C. After 36 hours of reaction, it was cooled to room temperature at a rate of 5°C per hour to obtain dark green blocky transparent crystals. After washing and drying naturally, the single-crystal sample of the porous coordination polymer is obtained, and vacuum-dried at 110° C., the porous coordination polymer can be obtained.

Embodiment 3

[0037] 11.31 mg (0.1 mmol) 1,2,4-triazole-3-carboxylic acid, 12.81 mg (0.1 mmol) 5-amino-1,2,4-triazole-3-carboxylic acid, 25.6 mg ( 0.15mmol) of CuCl 2 2H 2 O was added to 10 mL of distilled water and mixed evenly; the resulting mixture was sealed and subjected to hydrothermal reaction at 170°C. After reacting for 36 hours, it was cooled to room temperature at a rate of 5°C per hour to obtain dark green blocky transparent crystals. After washing and drying naturally, the single-crystal sample of the porous coordination polymer is obtained, and vacuum-dried at 110° C., the porous coordination polymer can be obtained.

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Abstract

The invention belongs to coordinated polymer materials and discloses a copper coordinated porous polymer and a preparation method and application thereof. The chemical formula of the copper coordinated porous polymer is [Cu3(Tra)2O2.7H2O]n, and the molecular structural formula of the copper coordinated porous polymer is C24H32Cu12N36O38, wherein Tra is the anion of 1,2,4-triazole after proton abstraction, Cu is a bivalent copper ion, and the material form of the copper coordinated porous polymer is a solid crystal. The crystal structure of the polymer is a trigonal system, the space group of the polymer is an R-3C space group, and the porosity of a three-dimensional framework structure is 51.9%. The preparation method includes: 1,2,4-triazole-3-carboxylic acid and 5-amino-1,2,4-triazole-3-carboxylic acid are allowed to have reaction with CuCl2 under a hydrothermal condition to obtain a dark green crystal. The copper coordinated porous polymer can serve as a photocatalyst for convertinggreenhouse gas carbon dioxide into carbon monoxide. The preparation method is easy to implement and high in product purity and yield are achieved, and the prepared copper coordinated porous polymer has a promising application prospect in the photocatalytic conversion of the carbon dioxide.

Description

technical field [0001] The invention belongs to coordination polymer materials, especially porous coordination polymers and their preparation methods and applications. Background technique [0002] The earth is rich in fossil fuel resources, such as oil and coal. The combustion of fossil fuels releases large amounts of CO 2 , causing many serious environmental problems such as global warming. will CO 2 The idea of ​​reducing to chemical fuel is to solve the problem of CO 2 effective approach to the problem. To achieve this, visible light can be used to catalytically reduce CO 2 , so as to reduce the emission of greenhouse gases, and at the same time obtain new fuels such as CO and methane. Searching for efficient photocatalysts is the key to solving CO 2 The key to reduction (CN 103721738A; CN 105749914A; CN 103464172B). Traditional carbon dioxide photocatalysts generally use cheap and abundant metal complexes such as manganese and iron (ACS Catal., 2015, 5, 2521–252...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G83/00B01J31/22B01J35/10C01B32/40
CPCB01J31/1691B01J35/004B01J35/10C08G83/008
Inventor 刘丰祎范文涛寇军锋徐全清张泽宇
Owner YUNNAN NORMAL UNIV
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