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Preparation method and application of visible light response type zinc sulfide photocatalyst

A photocatalyst and zinc sulfide technology, applied in the field of photocatalytic materials, can solve the problems of performance degradation, complex preparation steps, easy separation of components, etc., and achieve the effects of simple preparation method, high reproducibility and low cost

Pending Publication Date: 2021-10-19
NANJING UNIV OF INFORMATION SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the preparation steps of this composite material are very complicated, and the supported catalyst has the problem of low stability, and the components are prone to separation after long-term use, resulting in a significant decline in performance.
There is no report on the direct preparation of visible light-responsive ZnS by one-step method

Method used

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  • Preparation method and application of visible light response type zinc sulfide photocatalyst
  • Preparation method and application of visible light response type zinc sulfide photocatalyst
  • Preparation method and application of visible light response type zinc sulfide photocatalyst

Examples

Experimental program
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Effect test

Embodiment 1

[0018] A kind of preparation method of visible light response type zinc sulfide photocatalyst, concrete steps are as follows:

[0019] Prepare a 100mL beaker. At room temperature, add 4g of zinc chloride and 40g of potassium thiocyanate (1:10 by mass) into the beaker, and stir with a glass rod for 30s. Put the beaker with the reactants into the muffle furnace, set the temperature of the muffle furnace to 200°C and 400°C respectively, and calcinate at the corresponding temperature for 2 hours, and the resulting melt is washed, centrifuged, and dried, and it is a visible light response type. ZnS photocatalyst.

[0020] The X-ray diffraction (XRD) patterns of ZnS photocatalysts calcined at different temperatures (200°C, 400°C) prepared in this example are as follows figure 1 Shown, respectively compared with the ZnS standard card (PDF#39-1363), by figure 1 It can be seen that the products prepared in this embodiment are all phase-pure ZnS photocatalysts.

[0021] figure 2 T...

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Abstract

The invention discloses a preparation method and application of a visible light response type zinc sulfide photocatalyst, and the preparation process comprises the following steps: putting potassium thiocyanate and zinc chloride into a container, conducting stirring by using a glass rod, putting the stirred materials into a muffle furnace, and respectively conducting calcining at 200 DEG C and 400 DEG C for 2 hours to prepare the ZnS photocatalyst capable of responding under visible light. The preparation method of the catalyst is environment-friendly, simple and low in cost, the product is pure, organic pollutants in water can be well removed under visible light, and the catalyst has a good application prospect.

Description

technical field [0001] The invention belongs to the technical field of photocatalytic materials, and in particular relates to a preparation method and application of a visible light responsive zinc sulfide photocatalyst. Background technique [0002] Water pollution seriously threatens the safety of drinking water and the health of the ecological environment. As an environmentally friendly purification technology, photocatalysis can oxidize or degrade pollutants under visible or ultraviolet light, and completely degrade organic pollutants into carbon dioxide and water. Its advantages of simple operation and low cost have been widely accepted. recognition and attention. The principle of photocatalyst is that when the light energy is equal to or greater than the band gap energy of the semiconductor material, electrons are excited from the valence band (VB) to the conduction band (CB) to form photoinduced electrons-holes, and the electrons and holes combine with the reactive s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/04B01J37/08C02F1/30
CPCB01J27/04B01J37/08C02F1/30C02F2305/10C02F2101/308B01J35/39
Inventor 滕飞卢子霖袁晨马奔郝唯一滕怡然梁淑予
Owner NANJING UNIV OF INFORMATION SCI & TECH