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Preparation method of modified MoS2/CdS-based composite photoelectrode material and application thereof

A photoelectrode, mos2 technology, applied in catalyst activation/preparation, electrodes, chemical instruments and methods, etc., can solve the problems of low utilization rate of visible light, low catalytic activity, unstable hydrogen evolution performance, etc., and achieve good catalytic activity and hydrogen evolution performance. Effect

Pending Publication Date: 2019-10-25
TAIYUAN UNIV OF TECH
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0006] The present invention aims at the problems of low utilization rate of visible light, low catalytic activity, low hydrogen evolution rate and unstable hydrogen evolution performance existing in the existing photocatalytic water splitting reaction to produce hydrogen, and provides a modified MoS 2 Preparation method of / CdS-based composite photoelectrode material and its application in photocatalytic water splitting to produce hydrogen

Method used

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  • Preparation method of modified MoS2/CdS-based composite photoelectrode material and application thereof
  • Preparation method of modified MoS2/CdS-based composite photoelectrode material and application thereof
  • Preparation method of modified MoS2/CdS-based composite photoelectrode material and application thereof

Examples

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Effect test

Embodiment 1

[0034] Example 1: (Cu-doped CdS / MoS 2 Preparation method and application of matrix composite materials)

[0035] 0.9995 g Cd(NO 3 ) 2 4H 2 O was dissolved in 60 mL distilled water, stirred for 30 min until uniform, according to the 3 ) 2 4H 2 O molar ratio is 10:0.7:30 Weigh 0.0311 g CuCl respectively 2 , 0.6942 g thiourea, was added to the above solution, magnetically stirred for 3 h, ultrasonic 0.5 h. Then the mixed solution was transferred to a polytetrafluoroethylene-lined stainless steel autoclave, heated in water at 160 °C for 16 h, cooled to room temperature after the end of the water heat, soaked in 20 mL of ethanol and water for 1 h, ultrasonicated for 30 min, and then centrifuged , repeated 5 times until no Cl -1 After detection, a golden yellow precipitate was obtained, which was dried in a drying oven at 80 °C and then ground to obtain Cu-doped CdS.

[0036] Weigh 1 g of the above Cu-CdS into a 100 mL beaker, add 60 mL of distilled water, and sonicate in a...

Embodiment 2

[0039] Example 2: (MoS 2 / Fe-CdS composite material preparation method and application)

[0040] 0.9995 g Cd(NO 3 ) 2 4H 2 O was dissolved in 60mL distilled water, stirred for 30 min until the solution was uniform, and 3 ) 2 4H 2 The O molar ratio is 10:0.7:30 and weighs 0.0293 g FeCl 2 , 0.6942g thiourea, added to the above solution, magnetically stirred for 3 h, ultrasonic 0.5 h. Then the mixed solution was transferred to a polytetrafluoroethylene-lined stainless steel autoclave, heated in water at 160 °C for 16 h, cooled to room temperature after the end of the water heat, soaked in 20 mL of ethanol and water for 1 h, ultrasonicated for 30 min, and then centrifuged , repeated 5 times until no Cl - Until it is detected, dry the golden precipitate in a drying oven at 80°C and grind it to obtain Fe-CdS.

[0041] Weigh 1 g of the above-mentioned Fe-CdS into a 100 mL beaker, add 60 mL of distilled water, and ultrasonically treat it in an ultrasonic cleaner for 10 min to...

Embodiment 3

[0044] Example 3: (MoS 2 / Co-CdS composite material preparation method and application)

[0045] 0.9995 g Cd(NO 3 ) 2 4H 2 O was dissolved in 60 mL of distilled water, and stirred for 30 min until the solution was uniform. 3 ) 2 4H 2 The O molar ratio is 10:0.7:30 and weighs 0.0228 g CoCl respectively 2 , 0.6942 g of thiourea was added to the above solution, magnetically stirred for 3 h, and ultrasonicated for 0.5 h. Then, the mixed solution was transferred to a polytetrafluoroethylene-lined stainless steel autoclave, heated in water at 160 °C for 16 h, cooled to room temperature after the end of the water heat, soaked in 20 mL of ethanol and water for 1 h, ultrasonicated for 30 min, and then Centrifuge and repeat 5 times until Cl-free -1 until checked out. A golden yellow precipitate will be obtained, which is dried in an oven at 80 °C and then ground to obtain Co-CdS.

[0046] Weigh 1 g of the above-mentioned Co-CdS into a 100 mL beaker, add 60 mL of distilled wate...

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Abstract

The invention discloses a preparation method of a modified MoS2 / CdS-based composite photoelectrode material and application thereof, and belongs to the technical field of photoelectric catalysis. A simple two-step solvothermal method is used for preparing a MoS2 / CdS-based composite catalyst doped with a metal source (Cu, Fe, Co, Ni), and the MoS2 / CdS-based composite catalyst is prepared into a photoelectrode for a hydrogen prepartion reaction which is carried out by photocatalytic decomposition of water. The prepared MoS2 / CdS-based composite photoelectrode doped with the metal source has goodcatalytic activity and hydrogen evolution performance and cycle stability performance in photocatalytic decomposition water evolution hydrogen reaction.

Description

technical field [0001] The invention relates to a modified MoS 2 The invention relates to a preparation method and application of a CdS-based composite photoelectrode material, belonging to the technical field of photoelectric catalysis. Background technique [0002] According to relevant data published in the 2018 edition of "BP World Energy Statistical Yearbook", the global primary energy consumption has increased by 2.2% compared with 2017. Among them, my country's energy consumption increased by 3.1%, accounting for 23.2% of the world's energy consumption, and has become the country with the largest increase in energy consumption in the world for 17 consecutive years. The sustained and steady growth of the world economy relies on the demand for traditional fossil fuels, but from a long-term perspective, while traditional fossil fuels bring prosperity to human society, we have to face up to the trend of energy depletion and environmental degradation. Therefore, it is im...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/051B01J37/08B01J37/34C01B3/04C25B11/06C25B1/04
CPCB01J27/051C01B3/042B01J37/08B01J37/343B01J37/0036C25B1/04C25B11/091B01J35/39B01J35/33Y02E60/36
Inventor 马旭莉杨慧敏田浩洋梁振海
Owner TAIYUAN UNIV OF TECH
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