Tin sulfide/polypyrrole composite material and preparation method and application thereof

A composite material and polypyrrole technology, which is applied in catalyst activation/preparation, chemical instruments and methods, organic compound/hydride/coordination complex catalyst, etc., can solve the problem of low catalytic efficiency of visible light and achieve easy separation and recovery Effect

Pending Publication Date: 2022-06-28
YANGZHOU UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, most of the currently synthesized photocatalyst materials have the disadvantage of low catalytic efficiency under visible light, which cannot meet the requirements of practical applications.

Method used

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  • Tin sulfide/polypyrrole composite material and preparation method and application thereof
  • Tin sulfide/polypyrrole composite material and preparation method and application thereof
  • Tin sulfide/polypyrrole composite material and preparation method and application thereof

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Embodiment 1

[0036] 1. SnS 2 Synthesis of / PPy composites:

[0037] 1) Flower SnS 2 Synthesis of : Weigh 2 mmol SnCl 4 ·5H 2 O was dissolved in 30 ml of ethanol, magnetically stirred to dissolve it, 5 mmol of thioacetamide was added, and after magnetic stirring for 2 hours, it was transferred to a stainless steel autoclave with a volume of 50 ml of polytetrafluoroethylene lined, and sealed. , heated at 200°C for 24 hours, naturally cooled to room temperature, and the resulting precipitate was centrifuged, washed and dried.

[0038] 2) SnS 2 Synthesis of / PPy composites: 25 mg of pyrrole (Py) monomer was dissolved in 200 ml of water, followed by adding 500 mg of the above solvothermally synthesized flower-like SnS 2 powder, magnetically stirred for 1 hour to make it evenly dispersed, then irradiated with xenon lamp for 5 hours, the solid product was centrifuged, washed and dried to obtain SnS 2 / PPy composite.

[0039] The composition of the product was analyzed by a British Renishaw...

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Abstract

The invention discloses a tin sulfide / polypyrrole composite material as well as a preparation method and application thereof. The preparation method comprises the following steps: firstly, preparing flower-shaped SnS2 by adopting a solvothermal method; then dispersing the flower-like SnS2 in an aqueous solution containing a certain amount of pyrrole monomer (Py), irradiating with sunlight or xenon lamp light for 2-10 hours, and performing centrifugal separation and drying to obtain the tin sulfide / polypyrrole (SnS2 / PPy) composite material. The preparation method is simple and easy to implement, safe and environmentally friendly, Py can be subjected to in-situ oxidative polymerization on the surface of flower-shaped SnS2 to form a heterojunction structure, and the obtained SnS2 / PPy composite material can efficiently perform photocatalytic reduction on hexavalent chromium in water under the conditions of visible light irradiation and no sacrificial agent, and is easy to separate and recover. The synthesized SnS2 / PPy photocatalyst is expected to be applied to hexavalent chromium wastewater treatment and other application fields of a photocatalysis technology.

Description

technical field [0001] The invention belongs to the technical field of photocatalyst materials, and relates to a tin sulfide / polypyrrole composite material and a preparation method and application thereof. Background technique [0002] Photocatalytic technology based on the conversion and utilization of solar energy has great application potential in many fields such as environmental protection, energy, medical treatment, materials and construction. However, most of the currently synthesized photocatalyst materials have the disadvantage of low visible light catalysis efficiency, which cannot meet the requirements of practical applications. SUMMARY OF THE INVENTION [0003] Purpose: To effectively improve the tin sulfide (SnS 2 ) visible light catalytic activity, the present invention provides a new high-efficiency tin sulfide / polypyrrole composite material and a preparation method and application thereof. 2 A heterojunction structure is formed on the surface, resulting i...

Claims

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Application Information

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IPC IPC(8): B01J31/06B01J27/04B01J37/34C02F1/30C02F1/70C02F101/22
CPCB01J31/06B01J27/04B01J37/344C02F1/30C02F1/70C02F2305/10C02F2101/22B01J35/39
Inventor 张永才刘畅张芬
Owner YANGZHOU UNIV
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