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Flower-shaped MoS2 loaded Ag3PO4 nanosphere composite visible light catalyst and preparation method thereof

A nanosphere, visible light technology, applied in the field of photocatalytic materials, can solve the problems of being relatively expensive, prone to self-corrosion, instability, etc., and achieve the effects of simple steps, excellent visible light catalytic performance, and easy control.

Active Publication Date: 2015-02-04
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Ag was first reported in the literature in 2010 3 PO 4 Semiconductors have strong visible-light photocatalytic activity, which has gradually aroused people's great research interest. However, Ag 3 PO 4 It has the disadvantages of being expensive, unstable, and prone to self-corrosion

Method used

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  • Flower-shaped MoS2 loaded Ag3PO4 nanosphere composite visible light catalyst and preparation method thereof
  • Flower-shaped MoS2 loaded Ag3PO4 nanosphere composite visible light catalyst and preparation method thereof
  • Flower-shaped MoS2 loaded Ag3PO4 nanosphere composite visible light catalyst and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] 1) Weigh 0.892g of Zn(NO 3 ) 2 ·6H 2 O. 0.228g of thiourea, 60ml of ethylenediamine and 4ml of deionized water were heated at 150°C for 12 hours to obtain a sheet-shaped ZnS material, which was ready for use.

[0038] 2) Mix the material obtained in 1) with a mixed aqueous solution (60mL) of 0.5mmol ammonium molybdate and 3.7mmol thioacetamide, and then heat at 180°C for 12h to obtain ZnS-ethylenediamine-MoS 2 hybrid materials.

[0039] 3) Add 1M dilute hydrochloric acid solution to the hybrid material in 2), react for 8 hours, wash with centrifuge, and dry at 60°C to obtain black flower-like MoS 2 Material.

[0040] 4) Configure 0.0375M AgNO at room temperature and avoid light 3 aqueous solution (40mL), to which was added the MoS obtained in step 3)2 Material (0.005g), stirred for 30min. Then, under magnetic stirring, 5ml of 0.1M Na was added dropwise 3 PO 4 solution, a light yellow turbid liquid was obtained, which gradually turned yellow-green. After the dro...

Embodiment 2

[0047] 1) Weigh 0.446g of Zn(NO 3 ) 2 , 0.114g of thiourea, 60ml of ethylenediamine and 4ml of deionized water, and heated at 150°C for 12h to obtain a sheet-shaped ZnS material, which is ready for use.

[0048] 2) Mix the material obtained in 1) with a mixed aqueous solution (60mL) of 0.2mmol ammonium molybdate and 1.5mmol thioacetamide, and heat at 180°C for 12h to obtain ZnS-ethylenediamine-MoS 2 hybrid materials.

[0049] 3) Add 1M dilute hydrochloric acid solution to the hybrid material in 2), react for 8 hours, wash with centrifuge, and dry at 60°C to obtain black flower-like MoS 2 Material.

[0050] 4) Configure 0.0375M AgNO at room temperature and avoid light 3 aqueous solution (40mL), to which was added the MoS obtained in step 3) 2 Material (0.01 g), stirred for 30 min. Then, under magnetic stirring, 5ml of 0.1M Na was added dropwise 3 PO 4 solution, a light yellow turbid liquid was obtained, which gradually turned yellow-green. After the dropwise addition, ...

Embodiment 3

[0052] 1) Weigh 0.892g of Zn(NO 3 ) 2 , 0.228g of thiourea, 60ml of ethylenediamine and 4ml of deionized water, and hydrothermally heated at 150°C for 12h to obtain flaky ZnS material, which is ready for use.

[0053] 2) Mix the material obtained in 1) with a mixed aqueous solution (60mL) of 0.3mmol ammonium molybdate and 2.2mmol thioacetamide, and then heat at 180°C for 12h to obtain ZnS-ethylenediamine-MoS 2 hybrid materials.

[0054] 3) Add 1M dilute hydrochloric acid solution to the hybrid material in 2), react for 8 hours, wash with centrifuge, and dry at 60°C to obtain black flower-like MoS 2 Material.

[0055] 4) Configure 0.0375M AgNO at room temperature and avoid light 3 aqueous solution (40mL), to which was added the MoS obtained in step 3) 2 Material (0.02g), stirred for 30min. Then, under magnetic stirring, 5ml of 0.1M Na was added dropwise 3 PO 4 solution, a light yellow turbid liquid was obtained, which gradually turned yellow-green. After the dropwise a...

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Abstract

The invention provides a flower-shaped composite visible light catalyst Ag3PO4 / MoS2 and a preparation method thereof; the catalyst is formed by in-situ growth of Ag3PO4 nanospheres on the surface of flower-shaped MoS2; the particle size of the Ag3PO4 nanospheres is 80-200 nm. Firstly, the flower-shaped MoS2 is hydrothermally synthesized through a template method, then the Ag3PO4 nanospheres are grown on the surface of the flower-shaped MoS2 in situ, and thus the Ag3PO4 / MoS2 composite visible light catalyst is prepared; the preparation method is simple in steps, easy to control, and favorable to industrialized production. The Ag3PO4 / MoS2 composite visible light catalyst has excellent visible light catalytic property, is good in stability, and can be used repeatedly. Through introduction of the flower-shaped MoS2, the visible light catalytic degradation effect of Ag3PO4 on a rhodamine B organic dye is increased by 50% or more.

Description

technical field [0001] The invention belongs to the field of photocatalytic materials, in particular to flower-like MoS 2 load Ag 3 PO 4 Nanosphere composite visible light catalyst and preparation method thereof. Background technique [0002] At present, environmental pollution is becoming more and more serious, and it is increasingly affecting the survival and development of human beings. Photocatalytic technology can make full use of sunlight to degrade organic pollutants, so it has become a stable and environmentally friendly and effective method for water quality control. Over the past 20 years, TiO 2 Because of its cheap, non-toxic, good stability and other advantages, it is widely used in visible light catalytic materials. However, due to its wide band gap (3.2 eV), the visible part of solar energy cannot be fully utilized, and the low photoexcited electron-hole separation rate limits its quantum efficiency, seriously affecting its photocatalytic performance. The...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/19B01J35/02B01J35/00
Inventor 傅正义于洪舰马培艳解晶晶王为民
Owner WUHAN UNIV OF TECH
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