All-organic conjugated polymer photocatalytic material and preparation method thereof

A conjugated polymer, photocatalytic material technology, applied in organic compound/hydride/coordination complex catalysts, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problem of poor photocatalytic performance, high cost, The preparation process is cumbersome and other problems, to achieve the effects of large specific surface area, high photoelectric effect, and simple preparation process

Pending Publication Date: 2020-08-07
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to overcome the above-mentioned shortcoming of the prior art, provide a kind of novel all-organic conjugated polymer photocatalytic material and prepara

Method used

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  • All-organic conjugated polymer photocatalytic material and preparation method thereof
  • All-organic conjugated polymer photocatalytic material and preparation method thereof
  • All-organic conjugated polymer photocatalytic material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Ultrasonic disperse 1 mL of pyrrole monomer into 100 mL (volume ratio: 0.01) of deionized water to form a dispersion, and place it in an ice bath for cooling. Dissolve 3.9g ferric chloride hexahydrate oxidizing agent in 40g water again (mass ratio is 0.1) to form uniform oxidizing agent solution, then it is added dropwise in the above-mentioned pyrrole monomer dispersion liquid with the speed of 50 drops / min, wait to stir After 0.5h, it was allowed to stand still for 12h to obtain a black polypyrrole organic novel photocatalyst. figure 1 Catalyst scanning electron microscope figure prepared for this embodiment, as figure 1 As shown, the polypyrrole prepared in this example is loose and porous, which is beneficial to the enrichment of pollutants and further to the photocatalytic reaction.

Embodiment 2

[0037] Implementation Example 2: Ultrasonic dispersion of 1.5mL of pyrrole monomer into 125mL (volume ratio: 0.12) of deionized water to form a dispersion liquid, placed in an ice bath for cooling treatment. Dissolve 4.136g of ammonium persulfate into 75g (mass ratio is 0.05) water to form a uniform oxidant solution, then it is added dropwise to the above-mentioned pyrrole monomer dispersion at a speed of 20 drops / min, and after stirring for 0.5h, Stand still for 24h to obtain a black polypyrrole organic novel photocatalyst. see figure 2 For the infrared spectrogram of the product that this embodiment obtains, as can be seen from the figure at 3490cm -1 N-H stretching vibration peak appeared at 1555cm -1 and 1383cm-1 They are the circular vibration and plane bending vibration of the typical C-H of polypyrrole. In addition, at 1299cm -1 The in-plane vibration peak of =C-H can be clearly observed. Therefore, the successful synthesis of polypyrrole photocatalytic materials c...

Embodiment 3

[0038] Implementation Example 3: 4.0 mL of pyrrole monomer was ultrasonically dispersed into 250 mL (volume ratio: 0.016) of deionized water to form a dispersion, and placed in an ice bath for cooling. Then 5.239g ferric chloride hexahydrate oxidant is dissolved in 125g (mass ratio is 0.05) water to form uniform oxidant solution, then it is added dropwise in the above-mentioned pyrrole monomer dispersion liquid with the speed of 50 drops / min, wait After stirring for 1 hour, it was allowed to stand still for 18 hours to obtain a black polypyrrole organic novel photocatalyst. Such as image 3 As shown, the polypyrrole prepared in this example has much higher photocurrent response intensity in the visible light region than P25 and g-C 3 N 4 .

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Abstract

The invention discloses an all-organic conjugated polymer photocatalytic material and a preparation method thereof. The method comprises the steps of: ultrasonically dispersing pyrrole monomers into deionized water to form dispersion liquid, and placing the dispersion liquid in an ice bath pan to be cooled; and dissolving an oxidizing agent into water to form an oxidizing agent solution, dropwiseadding the oxidizing agent solution into the pyrrole monomer dispersion liquid, performing stirring, and standing to obtain the black polypyrrole organic novel photocatalyst. The growth process of thepolypyrrole is regulated and controlled by regulating the concentration, reaction time and reaction temperature of the oxidizing agent, the preparation process is simple and environmentally friendly,and the polypyrrole can well grow into uniform particles and has a higher photoelectric effect, a large specific surface area and more active sites.

Description

【Technical field】 [0001] The invention belongs to the field of preparation of nanometer catalytic materials, and in particular relates to an all-organic conjugated polymer photocatalytic material and a preparation method thereof. 【Background technique】 [0002] The effective use of solar energy is an effective measure to effectively solve the energy crisis and environmental pollution problems. Since titanium dioxide was found to be able to photolyze water under the irradiation of ultraviolet light, photocatalytic technology has become an efficient and green method for Solve energy and environmental issues. However, due to the large band gap and fast carrier recombination efficiency of titanium dioxide, it can only produce photocatalysis under ultraviolet light. Other existing inorganic semiconductor photocatalytic materials are also prone to heavy metal pollution and photochemical degradation. Corrosion instability and other disadvantages. Therefore, the development of an ...

Claims

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Application Information

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IPC IPC(8): B01J31/06C08G73/06A62D3/17
CPCB01J31/06B01J35/004C08G73/0611A62D3/17
Inventor 李永李瑞严仕伟宋浩杰
Owner SHAANXI UNIV OF SCI & TECH
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