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Nickel-coated sulfur-manganese-cadmium plasma photocatalyst rich in sulfur vacancies as well as preparation method and application of nickel-coated sulfur-manganese-cadmium plasma photocatalyst

A technology of wrapping sulfur, manganese, cadmium, and plasma, which is applied in the field of photocatalytic materials, can solve the problems of reducing the height of the Schottky junction, and achieve the effects of promoting industrial application, reducing production costs, and improving hydrogen production activity

Active Publication Date: 2022-07-08
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the existence of the Schottky junction between the metal and the semiconductor interface limits the transfer of hot electrons, so it is necessary to modify the catalyst to reduce the height of the Schottky junction

Method used

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  • Nickel-coated sulfur-manganese-cadmium plasma photocatalyst rich in sulfur vacancies as well as preparation method and application of nickel-coated sulfur-manganese-cadmium plasma photocatalyst
  • Nickel-coated sulfur-manganese-cadmium plasma photocatalyst rich in sulfur vacancies as well as preparation method and application of nickel-coated sulfur-manganese-cadmium plasma photocatalyst
  • Nickel-coated sulfur-manganese-cadmium plasma photocatalyst rich in sulfur vacancies as well as preparation method and application of nickel-coated sulfur-manganese-cadmium plasma photocatalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] (1) Solvothermal preparation of sulfur-vacancy-rich Mn 0.3 Cd 0.7 S nanorods

[0030] Dissolve 14 mmol of cadmium acetate and 6 mmol of manganese acetate in a mixed solvent of 30 mL of ethylenediamine and 30 mL of deionized water, stir for 20 min, add 25 mmol of thioacetamide and continue stirring for 30 min, then mix the resulting mixture. The solution was transferred to a 100 mL autoclave, reacted at a constant temperature of 200 °C for 24 h, and cooled to room temperature naturally. The obtained precipitate was washed three times with deionized water and ethanol in turn, and then vacuum-dried at 60 °C overnight to obtain Mn. 0.3 Cd 0.7 S nanorods (MCS-s) powder.

[0031] (2) Preparation of Ni / Mn by solvothermal method 0.3 Cd 0.7 S composite photocatalyst

[0032] Weigh the Mn obtained in step (1) 0.3 Cd 0.7 50 mg of S nanorod (MCS-s) powder was dispersed in 80 ml of ethanol solution and stirred for 10 min, and 64 µL of 0.1 mol / L Ni(NO) was added. 3 ) 2After...

Embodiment 2

[0034] (1) Solvothermal preparation of sulfur-vacancy-rich Mn 0.3 Cd 0.7 S nanorods

[0035] Dissolve 14 mmol of cadmium acetate and 6 mmol of manganese acetate in a mixed solvent of 30 mL of ethylenediamine and 30 mL of deionized water, stir for 20 min, add 25 mmol of thioacetamide and continue stirring for 30 min, then mix the resulting mixture. The solution was transferred to a 100 mL autoclave, reacted at a constant temperature of 200 °C for 24 h, and cooled to room temperature naturally. The obtained precipitate was washed three times with deionized water and ethanol in turn, and then dried in vacuum at 60 °C overnight to obtain Mn. 0.3 Cd 0.7 S nanorods (MCS-s) powder.

[0036] (2) Preparation of Ni / Mn by solvothermal method 0.3 Cd 0.7 S composite photocatalyst

[0037] Weigh the Mn obtained in step (1) 0.3 Cd 0.7 50 mg of S nanorod (MCS-s) powder was dispersed in 80 ml of ethanol solution and stirred for 10 min, and 128 µL of 0.1 mol / L Ni(NO) was added. 3 ) 2 ...

Embodiment 3

[0039] (1) Solvothermal preparation of sulfur-vacancy-rich Mn 0.3 Cd 0.7 S nanorods

[0040] Dissolve 14 mmol of cadmium acetate and 6 mmol of manganese acetate in a mixed solvent of 30 mL of ethylenediamine and 30 mL of deionized water, stir for 20 min, add 25 mmol of thioacetamide and continue stirring for 30 min, then mix the resulting mixture. The solution was transferred to a 100 mL autoclave, reacted at a constant temperature of 200 °C for 24 h, and cooled to room temperature naturally. The obtained precipitate was washed three times with deionized water and ethanol in turn, and then dried in vacuum at 60 °C overnight to obtain Mn. 0.3 Cd 0.7 S nanorods (MCS-s) powder.

[0041] (2) Preparation of Ni / Mn by solvothermal method 0.3 Cd 0.7 S composite photocatalyst

[0042] Weigh the Mn obtained in step (1) 0.3 Cd 0.7 50 mg of S nanorod (MCS-s) powder was dispersed in 80 ml of ethanol solution and stirred for 10 min, and 256 µL of 0.1 mol / L Ni(NO) was added. 3 ) 2 ...

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Abstract

The invention discloses a preparation method and application of a nickel-coated sulfur-manganese-cadmium plasma composite photocatalyst rich in sulfur vacancies. According to the composite photocatalyst, a Mn0. 3Cd0. 7S nanorod rich in sulfur vacancies is used as a carrier, an amorphous Ni nanolayer is loaded in an ethanol solution through an in-situ photodeposition method, and the Ni / Mn0. 3Cd0. 7S plasma composite photocatalyst is obtained. The introduced Ni layer has a surface plasmon resonance effect, light absorption can be expanded, and a large number of hot electrons are provided for photocatalytic hydrogen production reaction. And the introduction of sulfur vacancies can reduce the Schottky barrier of Ni and Mn0. 3Cd0. 7S, and further promote the migration of photo-induced electrons. Compared with pure Mn0. 3Cd0. 7S, the obtained composite material has the advantages that the performance of photocatalytic decomposition of water to produce hydrogen is obviously improved, the corrosion of salt ions in artificial seawater can be inhibited, and the catalytic activity in seawater is superior to that of pure water.

Description

technical field [0001] The invention belongs to the technical field of photocatalytic materials, and particularly relates to a nickel-wrapped sulfur-manganese-cadmium plasma photocatalyst rich in sulfur vacancies and a preparation method and application thereof. Background technique [0002] Photocatalytic water splitting to produce hydrogen is a very potential technical means to solve today's energy and environmental problems. At present, most of the research on water splitting technology is carried out in pure water. However, as an important resource for human survival, fresh water becomes more and more scarce with the growth of population and the development of industry. Therefore, absorbing a steady stream of sunlight, directly decomposing water in seawater to produce hydrogen, and realizing the conversion of solar energy into hydrogen energy is of great significance to solve the energy crisis and control environmental pollution. [0003] The localized surface plasmon r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/04B01J37/10B01J37/34C01B3/04
CPCB01J27/04B01J37/10B01J37/344C01B3/042C01B2203/0277B01J35/39Y02E60/36
Inventor 黄彩进程楚楚
Owner FUZHOU UNIV
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