Cadmium metal complex with dye catalytic light degradation property and preparation method of cadmium metal complex

A complex and photodegradation technology, applied in the chemical field, can solve the problems of wide energy gap, low utilization rate of visible light, low quantum efficiency, etc., and achieve the effects of high yield, stable photocatalytic degradation dye performance, and simple process

Inactive Publication Date: 2015-06-10
ANYANG NORMAL UNIV
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Problems solved by technology

But, the problem that present most of photocatalyst exists has: (1) energy gap is too wide, can only respond to the ultraviolet region of less than 5% of solar energy radiation, relatively the visible light utilization rate of 47% in solar energy is very low; (2) valence The potential of the band and conduction band is difficult to meet the potential of completely decomposing pollutants at the same time, and Na2S, Na2SO3, KI and Sacrificial agents such as organic alcohols can realize the generation of H2 or O2; (3) photogenerated electrons-holes are easy to recombine, and the quantum efficiency is very low (M. R. Hoffmann, S. T. Martin , W. Choi, D. W. Bahnemann, Chem. Rev., 1995, 95, 69–96.)

Method used

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  • Cadmium metal complex with dye catalytic light degradation property and preparation method of cadmium metal complex
  • Cadmium metal complex with dye catalytic light degradation property and preparation method of cadmium metal complex
  • Cadmium metal complex with dye catalytic light degradation property and preparation method of cadmium metal complex

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preparation example Construction

[0012] The preparation method of the cadmium metal complex having the property of catalytic photodegradation dyestuff comprises the following steps: dihydrate cadmium acetate, 5-methylisophthalic acid, 1,3-bis(pyridine-3-methoxy)benzene and distilled water into a hard glass tube and seal the tube, then put the glass tube in an oven and react at 170°C for four days. After the reaction is completed, the glass tube is slowly cooled at a rate of 5°C / h. To obtain a cadmium coordination polymer, collect colorless massive crystals and let them dry naturally in the air. Further, the molar ratio of the raw materials used is: cadmium acetate dihydrate: 5-methylisophthalic acid: 1, 3-bis(pyridine-3-methoxy)benzene=2:1:1, further, the number of liters of distilled water used is 100 times the mole number of cadmium acetate dihydrate.

[0013] A cadmium metal complex with the property of catalyzing photodegradation of dyes, and the complexes are used for photodegradation of dyes.

Embodiment 1

[0014] Embodiment 1: the synthesis of complex:

[0015] Cadmium acetate dihydrate (11 mg, 0.04 mmol), 5-methylisophthalic acid (4 mg, 0.02 mmol), 1,3-bis(pyridine-3-methoxy)benzene (6 mg, 0.02 mmol ) and 4mL of distilled water were put into a hard glass tube and sealed, then the glass tube was put into an oven and reacted at 170°C for four days. Finally, the colorless blocky crystals were collected and dried naturally in the air to obtain the cadmium coordination polymer. The yield is about 43%. The reproducibility of this method is good after repeated tests.

Embodiment 2

[0016] Embodiment 2: the characterization of complex:

[0017]Determination of the structure of the complex: select a single crystal of an appropriate size under a microscope to conduct X-ray diffraction experiments at room temperature. On a Bruker Smart Apex-II CCD diffractometer, Mo–K α Rays (wavelength = 0.71073 ?), collect diffraction data in the φ–ω manner. Data restoration was performed with the Bruker SAINT program. Diffraction data for partial structures were corrected for absorption using the SADABS program. The crystal structure was solved by direct method combined with difference Fourier synthesis. The coordinates and anisotropy parameters of all non-hydrogen atoms were corrected by the full matrix least squares method, and the positions of C–H atoms were calculated and determined according to the theoretical model. The detailed crystal measurement data are shown in Table 1. For the crystal structure of the complex, see figure 2 . Mo–K α The subscript of K i...

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Abstract

The invention discloses a cadmium coordination polymer adopting 1,3-bi(pyridine-3-methoxyl) benzene and 5-methyl isophthalic acid as ligands, and belongs to the chemical field. The chemical formula of the compound is as follows: [Cd2(5-Me-1,3-BDC)2(bpmb)2]n, wherein 5-Me-1,3-H2BDC is 5-methyl isophthalic acid; bpmb is 1, 3-bi(pyridine-3-methoxyl) benzene. The cadmium metal complex is prepared by adopting cadmium acetate dehydrate, 5-methyl isophthalic acid and 1,3-bi(pyridine-3-methoxyl) benzene. The preparation method of the complex is simple in process and relatively high in yield. The cadmium metal complex is stable in light catalytic degradation dye performance at a normal temperature and can be used for further developing a novel dye degradation material, so that novel vitality can be brought to the field of the material science.

Description

technical field [0001] The invention relates to a cadmium coordination polymer, in particular to a cadmium coordination polymer with 1,3-bis(pyridine-3-methoxy)benzene and 5-methylisophthalic acid as ligands, belongs to the field of chemistry. Background technique [0002] In recent years, due to the rapid development of industrialization, many dyes with high toxicity have entered the water environment, so the development of functional materials with photocatalytic degradation of pollution has aroused great interest of chemists. But, the problem that present most of photocatalyst exists has: (1) energy gap is too wide, can only respond to the ultraviolet region of less than 5% of solar energy radiation, relatively the 47% visible light utilization rate in solar energy is very low; (2) valence The potential of the band and conduction band is difficult to meet the potential of completely decomposing pollutants at the same time, and Na 2 S, Na 2 SO 3 , KI and organic alcoho...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F3/08B01J31/22A62D3/17A62D101/26A62D101/28
Inventor 杜记民赵国燕韩玉民余彩霞马凤吉
Owner ANYANG NORMAL UNIV
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