Graphitic carbon nitride/polypyrrole composite photocatalytic material and preparation method thereof

A technology of graphite phase carbon nitride and composite photocatalysis, which is applied in the field of composite materials and photocatalysis, can solve the problems of less research on photocatalysts, and achieve the effects of low raw material cost, excellent electrical conductivity, improved dispersibility and formability

Inactive Publication Date: 2014-03-26
JIANGSU UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are relatively few studies on photocatalysts composited with polypyrrole

Method used

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  • Graphitic carbon nitride/polypyrrole composite photocatalytic material and preparation method thereof
  • Graphitic carbon nitride/polypyrrole composite photocatalytic material and preparation method thereof
  • Graphitic carbon nitride/polypyrrole composite photocatalytic material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0021] Add 0.5g of graphite phase carbon nitride into a three-necked flask equipped with 10g of deionized water, stir magnetically for 30 minutes at 10°C, then add 0.005g of pyrrole to the above-mentioned graphite phase carbon nitride dispersion, Under magnetic stirring for 30 minutes, 1g of ammonium persulfate solution (containing 0.12gAPS) was added dropwise to the mixed solution for in-situ deposition oxidation polymerization reaction, and the reaction was carried out under magnetic stirring at 10°C for 10h, and the obtained product was washed with ethanol for 3 times Vacuum dry.

[0022] figure 1 The scanning electron microscope image of the graphite phase carbon nitride / polypyrrole composite photocatalytic material prepared for this example, it can be seen from the figure that after introducing polypyrrole, the polypyrrole particles are deposited on the graphite phase carbon nitride particle on the surface.

Embodiment 2

[0024] Add 0.5g of graphite phase carbon nitride into a three-necked flask equipped with 10g of deionized water, stir magnetically for 30 minutes at 0°C, then add 0.015g of pyrrole to the above-mentioned graphite phase carbon nitride dispersion, Under magnetic stirring for 30 minutes, 1 g of ammonium persulfate solution (containing 0.12 g of APS) was added dropwise to the mixed solution for in-situ deposition oxidation polymerization reaction, and the reaction was carried out under magnetic stirring at 0°C for 10 h, and the obtained product was washed with ethanol for 3 times Then vacuum dry.

[0025] figure 2 The ultraviolet-visible diffuse reflectance spectrogram of the graphitic phase carbon nitride / polypyrrole composite photocatalytic material prepared for this embodiment, as can be seen from the figure, the composite photocatalyst has more energy in the visible light region than the pure graphitic phase carbon nitride. Strong absorption, red shift occurs. This is mainl...

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Abstract

The invention discloses a graphitic carbon nitride / polypyrrole composite photocatalytic material and a preparation method thereof. The technical process of the preparation method comprises the steps as follows: dispersing graphitic carbon nitride in a medium, stirring the medium at the temperature of 0-10 DEG C for 30 min to obtain a graphitic carbon nitride dispersing liquid, dropwise adding pyrrole into the graphitic carbon nitride dispersing liquid with stirring to obtain a mixed solution, stirring the mixed solution at the temperature of 0-10 DEG C for 30 min, dropwise adding a prepared initiator solution into the mixed solution, stirring the mixture at the temperature of 0-10 DEG C for reaction for 10 h, washing an obtained product for several times, and performing vacuum drying on the product to obtain the graphitic carbon nitride / polypyrrole composite photocatalytic material. The graphitic carbon nitride / polypyrrole composite photocatalytic material and the preparation method thereof have the advantages that the preparation technology is simple, the cost is low, and the large-scale industrial production is facilitated; and the graphitic carbon nitride / polypyrrole composite photocatalytic material has good environmental stability, has a better degradation effect on organic dye rhodamine B with certain concentration and can be applied to treatment of contaminated wastewater.

Description

Technical field [0001] The present invention is a composite material and photocatalytic field, involving a composite photocatalyst and its preparation method, which specifically refers to a graphite nitride nitride / polypyoric composite photocatalytic material and its preparation methods. Background technique [0002] In recent years, graphite nitride has attracted great attention as a non -metallic photocatalyst.Its structure is similar to graphite. 3 N 4 C 6 N 7 The ring is composed, and the layer and the layer are in a weak Van Dehua.Its powerful C-N co-price keys ensure that it has high thermal stability and chemical stability in the surrounding environment.Its composition element C, N is the most reserves on the earth and have the simplicity of preparation.As a photocatalyst, its biggest feature is a narrow forbidden bandwidth 2.7 e V. [0003] However, when graphite nitride is catalyzed, the electronic cave generated by the optical electronic acupoints generated by its optic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/06
Inventor 盛维琛吴萍陈桥
Owner JIANGSU UNIV
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