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Cadimium complex monocrystal capable of catalyzing photodegradation of methylene blue, and preparation method thereof

A cadmium complex, methylene blue technology, applied in the direction of cadmium organic compounds, organic compounds/hydrides/coordination complex catalysts, chemical instruments and methods, etc. problems such as low quantum efficiency, to achieve the effect of simple process, stable photocatalytic degradation of dye performance, and high yield

Inactive Publication Date: 2016-03-02
ANYANG NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The existing problems of most of the photocatalysts are: (1) the energy gap is too wide, and can only respond to the ultraviolet light region of less than 5% of solar radiation, and the utilization rate of 47% of visible light in relative solar energy is very low; (2) photogenerated electrons- Holes are easy to recombine, and the quantum efficiency is very low

Method used

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  • Cadimium complex monocrystal capable of catalyzing photodegradation of methylene blue, and preparation method thereof
  • Cadimium complex monocrystal capable of catalyzing photodegradation of methylene blue, and preparation method thereof
  • Cadimium complex monocrystal capable of catalyzing photodegradation of methylene blue, and preparation method thereof

Examples

Experimental program
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Embodiment 1

[0020] Example 1: Synthesis of cadmium complex single crystal catalyst

[0021] Dissolve cadmium acetate dihydrate (11mg, 0.04mmol), ligand L phthalic acid (3mg, 0.02mmol), bpmb (6mg, 0.02mmol) in a mixed solvent of methanol (2mL) and water (2mL), and put Put it into a hard glass tube and seal the tube. Under hydrothermal conditions, at a constant temperature of 165°C for three days, the natural condition drops to room temperature to obtain colorless massive crystals. The molecular formula of the colorless massive crystals is: [Cd 2 (L) 2 (bpmb)], which is a cadmium complex single crystal catalyst with a yield of 55%.

[0022] Select a single crystal of appropriate size under a microscope and perform X-ray diffraction experiments at room temperature. On the BrukerSmartApex-IICCD diffractometer, Mo-K monochromated by a graphite monochromator is used α Rays To Way to collect diffraction data. Use BrukerSAINT program to restore data. Diffraction data of part of the structure is c...

Embodiment 2

[0029] Example 2: Specific application of the cadmium complex catalyst of the present invention in the photocatalytic degradation of dyes

[0030] The concentration is about 4×10 at 50mL -5 Add 20 mg of the colorless massive crystals prepared in Example 1 to the mol / L methylene blue aqueous solution, and stir for 30 minutes in a dark environment. After the adsorption-desorption equilibrium is reached, a xenon lamp 350W ultraviolet light is used for top irradiation, and the distance between the light source and the top surface of the reactor is 10 cm. Detect with a Varian UV-Vis spectrometer. The light is continuously reacted for 2 hours, and the sample is manually injected every half hour for detection. After 2 hours, the methylene blue is basically degraded, see Figure 4 .

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Abstract

The invention belongs to the field of coordination chemistry and photocatalysis, and discloses a cadimium complex monocrystal capable of catalyzing photodegradation of methylene blue, and a preparation method thereof. The chemical formula of the cadimium complex monocrystal is [Cd<2>(L)<2>(bpmb)], wherein H<2>L is used for representing phthalic acid, bpmb is used for representing 1,4-di(pyridine-3-methoxyl)benzene; the cadimium complex monocrystal belongs to monoclinic system, space group is C2 / c, a=19.490(4) angstroms, b=9.985(2) angstroms, c=15.540(3) angstroms, beta=96.25(3)DEG, V=3006.4(10) angstrom<3>. The structural simple formula is disclosed in the invention. The cadimium complex monocrystal photocatalyst possesses stable and high efficiency dye photocatalytic degradation performance at normal temperature, and especially photocatalytic degradation performance on methylene blue. The preparation method is simple; and yield is high, and is 51% or higher.

Description

Technical field [0001] The invention relates to the field of coordination chemistry and photocatalysis, in particular to a cadmium complex single crystal with catalytic photodegradation of methylene blue and a preparation method thereof. Background technique [0002] With the rapid development of the dye textile industry, the variety and quantity of dyes are increasing, printing and dyeing wastewater has become one of the key pollution sources of the water system environment. The water quality of printing and dyeing wastewater is complex, dark in color, and large in discharge. It often contains difficult-to-degrade, toxic organic pollutants, and some even carcinogenic, mutagenic, and teratogenic organic matter, such as benzene ring, amino group, azo group, etc., are harmful to ecology. The environment and drinking water cause great harm. Water pollution is becoming more and more serious, even threatening people's daily life and living conditions in relevant areas. The treatment ...

Claims

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Application Information

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IPC IPC(8): C07F3/08B01J31/22C02F1/32C02F101/38
CPCY02W10/37
Inventor 刘雷雷杜记民石云峰吕允贺余彩霞
Owner ANYANG NORMAL UNIV