A synthetic method of a polypyrrole-functionalized cobalt complex composite material and applications of the material

A technology of cobalt complexes and composite materials, applied in organic compound/hydride/coordination complex catalysts, chemical instruments and methods, special compound water treatment, etc., can solve the problem of insufficient photocatalytic effect, insufficient activity, photogenerated electron Easy to recombine with holes and other problems, to achieve the effect of increasing hydrophilicity, enhancing affinity, and high catalytic degradation efficiency

Active Publication Date: 2017-02-15
BOHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, since this type of complex material has a wide band gap, it is not active enough in the visible light range, which makes it easy for photogenerated electrons and holes to recombine during the photocatalytic process, resulting in insufficient photocatalytic effect of this type of material using visible light. Therefore, it is of great significance to improve the catalytic degradation of dye pollutants in the visible range of the complex

Method used

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  • A synthetic method of a polypyrrole-functionalized cobalt complex composite material and applications of the material
  • A synthetic method of a polypyrrole-functionalized cobalt complex composite material and applications of the material
  • A synthetic method of a polypyrrole-functionalized cobalt complex composite material and applications of the material

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Experimental program
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Embodiment 1～ Embodiment 3

[0047] Embodiment 1~Example 3 is based on the synthesis of organic ligand function cobalt complex

Embodiment 1

[0048] Example 1 Synthesis of [Co(L)(1,3,5-HBTC)], wherein L is N,N'-bis(3-pyridine)thiophene-2,5-dicarboxamide, and its structural formula is: 1,3,5-HBTC is trimesic acid monohydrogen radical with 0.1mmol CoCl 2 ·6H 2 O, 0.10 mmol N,N'-bis(3-pyridine)thiophene-2,5-dicarboxamide, 0.1 mmol trimesic acid and 5 mL H 2 O was added to a 25mL beaker in sequence, and stirred at room temperature for 20min to obtain a suspension mixture. After adjusting the pH of the suspension mixture to 4.3 with 1mol / L NaOH solution, it was transferred to a 25mL autoclave and heated at 5°C / h The temperature was raised to 110°C, kept under hydrothermal conditions for 48 hours, and the temperature was lowered to room temperature at a cooling rate of 5°C / h to obtain pink blocky crystals, which were washed alternately with deionized water and ethanol for 3 times, and dried naturally at room temperature. Obtain [Co(L)(1,3,5-HBTC)], the productive rate is 45%, and its XRD diffraction pattern is as follows...

Embodiment 2

[0049] Example 2 Synthesis of [Co(L)(1,3,5-HBTC)], wherein L is N,N'-bis(3-pyridine)thiophene-2,5-dicarboxamide, 1,3,5 -HBTC is 0.2mmol CoCl 2 ·6H 2 O, 0.10 mmol N,N'-bis(3-pyridine)thiophene-2,5-dicarboxamide, 0.15 mmol trimesic acid and 10 mL H 2 O was sequentially added to a 25mL beaker, stirred at room temperature for 30min to obtain a suspension mixture, adjusted the pH of the suspension mixture to 5.3 with 1mol / L NaOH solution, then transferred to a 25mL autoclave, heated at 5°C / h The temperature was raised to 120°C, kept under hydrothermal conditions for 72 hours, and the temperature was lowered to room temperature at a cooling rate of 5°C / h to obtain pink blocky crystals, which were washed alternately with deionized water and ethanol for 4 times, and dried naturally at room temperature. Obtain [Co(L)(1,3,5-HBTC)], the productive rate is 65%, and its XRD diffraction pattern is as follows figure 1 As shown, its coordination environment diagram is shown as Figure 10 ...

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Abstract

A synthetic method of a polypyrrole-functionalized cobalt complex composite material and applications of the material are disclosed. A hydrothermal synthetic process is adopted. The composite material is prepared by adding CoCl<2>.6H2O, N,N'-bis(3-pyridyl)-thiophene-2,5-dicarboxamide and trimesic acid into deionized water, performing a hydrothermal reaction to synthesize a cobalt complex the chemical formula of which is [Co(L)(1,3,5-HBTC)], grinding the cobalt complex to obtain a microcrystalline cobalt complex, mixing with pyrrole and water under ultrasonic waves, adding an aqueous amine sulfate solution, stirring, and allowing the mixture to stand to obtain the composite material. The synthetic method and the applications are advantageous in that the method adopts the polypyrrole to functionalize the cobalt complex, the photoresponse range of the complex is expanded simply and rapidly, recombination of photogenerated electrons and holes in a photocatalysis process is effectively reduced, and the composite material has good effects of catalyzing degradation of dye pollutants under visible light, saves energy consumption and reduces environment pollution caused by the dye pollutants.

Description

technical field [0001] The invention belongs to the field of synthesis of visible light catalytic materials, in particular to a synthesis method and application of a polypyrrole functionalized cobalt complex composite material. Background technique [0002] The dye lost in the printing and dyeing industry accounts for 15% of the dye output and is one of the main pollution sources of industrial wastewater. Among various dyes, methylene blue can be used in the dyeing of hemp, silk fabrics, paper, bamboo and wood; it can also be used in the manufacture of inks and lakes, and the dyeing of biological and bacterial tissues. Because the dye has good water solubility, it has a high loss rate during production and use, and it is easy to enter the water body, which has a greater harmful effect on the environment, human skin, eyes, etc. Therefore, it is of great practical significance to develop new functional degradable materials to reduce or eliminate the hazards of methylene blue ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/22C02F1/30
CPCB01J31/06B01J31/1815B01J31/2213B01J35/004B01J2531/0238B01J2531/0241B01J2531/845B01J2540/12B01J2540/30C02F1/30C02F2101/308C02F2305/10
Inventor 刘国成于蕙瑄林宏艳蔡克迪赵刚王祥应俊刘滨秋
Owner BOHAI UNIV
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