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One-dimensional nickel complex with property of catalyzing photodegradation of dye and preparation method of one-dimensional nickel complex

A nickel complex, photodegradation technology, applied in the direction of organic compound/hydride/coordination complex catalysts, chemical instruments and methods, water treatment of special compounds, etc., can solve the problem of insufficient photocatalyst efficiency and achieve stable photocatalytic The effect of degradable dye properties, high yield, and easy operation

Inactive Publication Date: 2020-10-30
YANCHENG TEACHERS UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Compared with the traditional adsorption method, chemical oxidation method and biological treatment method, the photocatalytic technology for degrading organic dyes has many advantages such as low energy consumption, no secondary pollution, and low operating cost, and is widely used. However, the current common photocatalyst efficiency not high enough

Method used

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  • One-dimensional nickel complex with property of catalyzing photodegradation of dye and preparation method of one-dimensional nickel complex
  • One-dimensional nickel complex with property of catalyzing photodegradation of dye and preparation method of one-dimensional nickel complex
  • One-dimensional nickel complex with property of catalyzing photodegradation of dye and preparation method of one-dimensional nickel complex

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The synthesis of embodiment 1 complex:

[0023] 14.50mg of nickel nitrate hexahydrate (Ni(NO 3 ) 2 ·6H 2 O), 20.1mg of 3,3'-(1H,1'H-2,2'-biimidazole-1,1'-dimethylene)benzoic acid (H 2 L), 15.6 mg of 1,4-bis(benzimidazol-1-yl)benzene (BBIB) was dissolved in 1 mL of N,N-dimethylacetamide, 0.5 mL of HCl (0.1 mol / L) and 0.5 mL In the aqueous solution, ultrasonically oscillate for 5 minutes to mix evenly. After mixing, put it into the polytetrafluoroethylene liner of the hydrothermal reaction kettle to obtain a mixed solution. The above mixed solution is baked at 100°C for 72 hours, and the solid is separated after the product is taken out. , green blocky crystals can be obtained.

Embodiment 2

[0024] The structural characterization of embodiment 2 complex:

[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 the basic coordination and stacking modes. 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]

[0028]

[0029] R 1 =∑||...

Embodiment 3

[0030] Embodiment 3: the thermogravimetric test of complex:

[0031] In order to explore the thermal stability of the nickel complex of the present invention, a thermogravimetric test was carried out on its sample. The test conditions are: the protective gas is nitrogen at a flow rate of 20mL / min, the sweeping gas is air at a flow rate of 30mL / min, and the temperature is raised from room temperature to 900°C at a rate of 10°C / min. The nickel complex of the present invention is at 40-140°C Within the range, the mass loss is about 3.13%, which may be due to the loss of free water molecules, and the rapid weight loss in the range of 310-850 ° C, which may be caused by the collapse of the crystal structure; when the temperature continues to rise, the present invention The mass fraction of the nickel complex remains constant, which is due to the final generation of relatively stable nickel oxide. The quality of the nickel complex of the present invention does not change violently ...

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Abstract

The invention provides a nickel metal complex, a preparation method and application of the nickel metal complex in catalytic photodegradation of dyes. The chemical formula of the complex is [Ni (L) (BBIB) 2.4 H2O] n, H2L is equal to 3, 3 '-(1H, 1' H-2, 2 '-biimidazole-1, 1'-dimethylene) benzoic acid, and BBIB is equal to 1, 4-bis (benzimidazole-1-yl) benzene. The nickel metal complex is of a one-dimensional chain structure formed by self-assembly of nickel ions, H2L and BBIB ligands. The complex has good property of removing methylene blue and methyl orange organic dyes in water through catalytic light degradation, and has potential application value in the field of environmental pollution treatment. The complex is simple in synthesis process, mild in reaction condition and convenient to use, and a new means is provided for treatment of harmful substances in the environment.

Description

technical field [0001] The invention belongs to the technical field of organic synthesis and organometallic chemistry, and specifically relates to a kind of 3,3'-(1H,1'H-2,2'-biimidazole-1,1'-dimethylene)benzoic acid and Preparation of nickel complexes with 1,4-bis(benzimidazol-1-yl)benzene as a ligand and its application in catalytic photodegradation of organic dyes in water. Background technique [0002] In recent years, the output of dye wastewater has been huge. Due to the complex chemical structure of dyes, it is difficult to degrade and cause carcinogenic and mutagenic hazards to organisms after being discharged into water bodies. Therefore, the development of new treatment technologies has become an urgent problem to be solved. Compared with the traditional adsorption method, chemical oxidation method and biological treatment method, the photocatalytic technology for degrading organic dyes has many advantages such as low energy consumption, no secondary pollution, and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G83/00B01J31/22C02F1/30C02F101/30
CPCC08G83/008B01J31/1691C02F1/30B01J2531/847B01J2531/0241C02F2305/10C02F2101/308B01J35/39
Inventor 王俊张晨陈宁宁贾立永陶建清潘晨东王晓婉贾海瑞俞梦娇梁良
Owner YANCHENG TEACHERS UNIV
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