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CuCd-MOF/GO-x composite material with visible light catalytic degradation performance and preparation and application thereof

A composite material and catalytic degradation technology, applied in the field of CuCd-MOF/GO-x composite material and its preparation, can solve the problems of unclear broad-spectrum degradation effect and low degradation efficiency of catalysts, and achieve superior photocatalytic degradation rate and high preparation efficiency. High efficiency and convenient operation effect

Active Publication Date: 2022-07-01
JIANGSU UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, Cu-H 4 Although L has visible light catalytic degradation performance, but the degradation efficiency is low, the adsorption efficiency of MB is only 85.9% within 300min, and the efficient degradation of RhB dye can be achieved within 5h, and only Cu-H 4 L can be used for the degradation of MB and RhB, and it is unclear whether the catalyst has a broad-spectrum degradation effect

Method used

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  • CuCd-MOF/GO-x composite material with visible light catalytic degradation performance and preparation and application thereof
  • CuCd-MOF/GO-x composite material with visible light catalytic degradation performance and preparation and application thereof
  • CuCd-MOF/GO-x composite material with visible light catalytic degradation performance and preparation and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Example 1: Preparation of CuCd-MOF material

[0036] Weigh 0.0998g of copper acetate, 0.1333g of cadmium acetate and 0.1136g of N-(phosphonomethyl)iminodiacetic acid and dissolve in 6mL of water, ultrasonically make them evenly mixed, and then transfer to a 50mL autoclave. The reaction was carried out in an oven for 48 hours, cooled to room temperature, washed with ultrapure water and absolute ethanol, and dried to obtain blue crystals. The blue crystal is a pure CuCd-MOF material without doping GO, that is, the value of x in CuCd / GO-x is 0, that is, a pure CuCd-MOF material.

[0037] The obtained CuCd-MOF was characterized by infrared spectroscopy, and the specific results were IR(KBr,cm-1): 3408(s), 1620(s), 1593(s), 1442(w), 1402(m), 1326(w) ), 1299(w), 1240(w), 1149(m), 1130(m), 1091(s), 1070(s), 997(m), 923(w), 850(w), 788(m ), 750(m), 632(m), 578(m), 555(m), 514(w)( image 3 ).

Embodiment 2

[0038] Example 2: Preparation of CuCd-MOF / GO-1.5 composite visible light catalyst

[0039] Weigh 0.0998g of copper acetate, 0.1333g of cadmium acetate and 0.1136g of N-(phosphonomethyl)iminodiacetic acid and dissolve it in 6mL of water, add 0.0052g of graphene oxide to the solution system, ultrasonically make it evenly mixed and then transfer to In a 50mL autoclave, react in an oven at 100°C for 48h, cool to room temperature, wash with ultrapure water and absolute ethanol, and dry to obtain blue-black crystals. The blue-black crystal is a CuCd-MOF / GO composite material with a GO doping ratio of 1.5%, denoted as CuCd-MOF / GO-1.5.

Embodiment 3

[0040] Example 3: CuCd-MOF / GO-3 composite visible light catalyst and its preparation

[0041] Weigh 0.0998g of copper acetate, 0.1333g of cadmium acetate and 0.1136g of N-(phosphonomethyl)iminodiacetic acid and dissolve it in 6mL of water, add 0.0104g of graphene oxide to the solution system, ultrasonically make it evenly mixed and then transfer to In a 50mL autoclave, react in an oven at 100°C for 48h, cool to room temperature, wash with ultrapure water and absolute ethanol, and dry to obtain blue-black crystals. The blue-black crystal is a CuCd-MOF / GO composite material with a GO doping ratio of 3%, denoted as CuCd-MOF / GO-3.

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Abstract

The invention discloses a CuCd-MOF / GO-x composite material with visible light catalytic degradation performance and preparation and application of the CuCd-MOF / GO-x composite material, the CuCd-MOF / GO-x composite material is formed by combining CuCd-MOF and GO through hydrogen bonds, 0 lt; xlt; 10; the chemical expression of the CuCd-MOF is {[Cu2Cd2 (pmida) 2 (H2O) 7]. 3H2O} n, and the CuCd-MOF is a metal organic framework material which takes H4pmida as a ligand and contains Cu and Cd ions; each asymmetric unit of the CuCd-MOF contains two deprotonated organic ligands pmida4 <->, two copper ions, two cadmium ions, seven coordination water molecules and three crystal lattice water molecules. The composite material has the advantages of simple preparation method and stable structure, can photocatalytically degrade dyes such as MB, CR, MO, RhB and LEV under the irradiation of visible light, can be recycled, and has wide application prospects.

Description

technical field [0001] The invention relates to the technical field of photocatalytic materials, in particular to a CuCd-MOF / GO-x composite material for catalytic degradation of organic dyes by visible light, and a preparation method and application thereof. Background technique [0002] The problem of water pollution has become a significant social problem that the world has to face, seriously affecting the sustainable development of human beings. The traditional methods of treating water pollution include chemical oxidation, coagulation sedimentation, physical adsorption, microbial decomposition, electrocatalysis, etc. Although these methods have certain treatment effects, most of them have the disadvantages of large investment, time-consuming and energy consumption. , the treatment process is complex and the degradation is not thorough enough, and it is easy to cause secondary pollution problems, which cannot fully meet the environmental protection needs of modern society...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/22C02F1/30C02F101/30
CPCB01J31/1691B01J31/2243C02F1/30B01J2531/16B01J2531/27C02F2101/30C02F2101/308B01J35/39Y02W10/37
Inventor 杨廷海陈骏韦佳敏王欣陈超越傅维杰
Owner JIANGSU UNIV OF TECH
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