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Synthesis of copper complex and application of copper complex as photodegradation catalyst

A copper complex and hexahydrate technology is applied in the application field of degrading methylene blue dye, can solve the problems of low efficiency, secondary pollution, high energy consumption, and achieves the effects of simple process, easy separation and high yield

Pending Publication Date: 2020-07-28
YANCHENG TEACHERS UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The traditional water treatment process has been continuously innovated due to a series of disadvantages such as easy to produce secondary pollution, high energy consumption, and low efficiency. The reform of the simple traditional treatment process has gradually changed to the development of new materials for water treatment

Method used

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  • Synthesis of copper complex and application of copper complex as photodegradation catalyst
  • Synthesis of copper complex and application of copper complex as photodegradation catalyst
  • Synthesis of copper complex and application of copper complex as photodegradation catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Embodiment 1: the synthesis of complex

[0023] 11.9mg of Cu(NO 3 ) 2 ·6H 2 O, 10.5mg of H 2 AIP, 16.5 mg of L were dissolved in 8 mL of water, ultrasonically oscillated for 5 min, transferred to the polytetrafluoroethylene liner of a 25 mL hydrothermal reaction kettle, reacted for 72 hours at a temperature of 150 ° C, and the resulting product was washed twice with water (2 mL / times), to obtain blue transparent bulk crystals.

Embodiment 2

[0024] Embodiment 2: Structural characterization of complexes

[0025] Use a microscope to select a single crystal of a suitable size, and use a Siemens (Bruker) SMART CCD diffractometer (graphite monochromator, Mo-Ka, ) to collect diffraction data. Diffraction data were corrected for absorption using the SADABS program. Data restoration and structure elucidation were done using the SAINT and SHELXTL programs, respectively. The coordinates of all non-hydrogen atoms were determined by the least squares method, and the positions of the hydrogen atoms were obtained by the theoretical hydrogenation method. The crystal structure was refined using the least squares method. Figure 1(a) and Figure 1(b) show that [Cu(L)(AIP)(H 2 O)·H 2 O] n Basic coordination and stacking methods. Some parameters of its crystallographic diffraction point data collection and structure refinement are shown in the table below.

[0026] Crystallographic data of the complexes in Table 1

[0027] ...

Embodiment 3

[0030] Embodiment 3: the photodegradation of complex

[0031] Weigh 30 mg of the copper complex synthesized by the present invention and add it to 50 mL of methylene blue aqueous solution (10 mg / L), then add 50 uL of H 2 o 2 , stirred in the dark for 30 minutes to make the surface of the complex reach adsorption-desorption equilibrium, then irradiated with visible light while stirring, took 1 mL of methylene blue aqueous solution every 10 minutes, and immediately tested the change of absorbance. The result of photodegradation shows that the degradation rate of the complex for methylene blue is as high as 91.5% respectively within 60min, and can be recycled for many times (such as figure 2 ).

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Abstract

The invention provides preparation of a copper metal complex and application of the copper metal complex in a photodegradation catalyst. The chemical formula of the complex is [Cu (L) (AIP) (H2O). H2O] n, wherein H2AIP is equal to 5-aminoisophthalic acid, and L is equal to 3, 5-bis (1H-benzimidazole-1-yl) pyridine. The copper metal complex is of a two-dimensional structure formed by self-assembling copper ions through AIP <2-> and an L ligand. The copper complex has stable and efficient catalytic photodegradation dye properties: methylene blue is basically completely degraded within 60 minutes, and is easy to separate and can be recycled for multiple times.

Description

technical field [0001] The invention belongs to the technical field of organic synthesis and organometallic chemistry, and specifically relates to a kind of 3,5-bis(1H-benzimidazol-1-yl)pyridine (L) and 5-aminoisophthalic acid (H 2 Preparation of copper complexes with AIP) as ligands and their application as dyes for degradation of methylene blue (MB). Background technique [0002] The rapid development of industry has brought about increasingly serious ecological and environmental problems. The living environment of human beings has been continuously destroyed, making the problem of water pollution more and more serious. At present, the main source of water pollution in my country is industrial wastewater, of which printing and dyeing wastewater accounts for more than 35% of industrial wastewater. Printing and dyeing wastewater has the characteristics of large wastewater volume, high chroma, high toxicity, and complex water quality. It belongs to high-concentration refract...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F1/08B01J31/22B01J37/10C02F1/30C02F101/30C02F101/38
CPCC07F1/005B01J31/2217B01J31/1815B01J37/10C02F1/30C07B2200/13C02F2101/30C02F2101/38C02F2101/40C02F2305/10C02F2101/308B01J35/39
Inventor 陶建清陈宁宁张晨
Owner YANCHENG TEACHERS UNIV
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