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Calcium-doped cadmium sulfide nanosheet as well as preparation method and application thereof

A technology of nanosheets and cadmium sulfide, applied in cadmium sulfide, chemical instruments and methods, inorganic chemistry, etc., can solve the problems of high electron-hole recombination rate and low activity, and achieve high-efficiency catalytic effects

Active Publication Date: 2022-04-26
SOUTH CHINA AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing cadmium sulfide has the problem of high electron-hole recombination rate, which leads to its low activity for photocatalytic water splitting and hydrogen production.

Method used

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  • Calcium-doped cadmium sulfide nanosheet as well as preparation method and application thereof
  • Calcium-doped cadmium sulfide nanosheet as well as preparation method and application thereof
  • Calcium-doped cadmium sulfide nanosheet as well as preparation method and application thereof

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Experimental program
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Effect test

Embodiment 1

[0037] The present embodiment provides a kind of calcium-doped cadmium sulfide nanosheet, its chemical formula is Ca 0.3 Cd 0.7 S.

[0038] The preparation method of the above-mentioned calcium-doped cadmium sulfide nanosheets comprises the following steps:

[0039] Calcium chloride, cadmium acetate, thiourea and ethylenediamine were mixed and stirred for 30 minutes, and then reacted at 100°C for 8 hours. After drying, the calcium-doped cadmium sulfide nanosheets were obtained; calcium chloride, cadmium acetate and thiourea The molar ratio of ethylenediamine is 3:7:11, and the usage amount of ethylenediamine is 60-80ml.

Embodiment 2

[0041] The present embodiment provides a kind of calcium-doped cadmium sulfide nanosheet, its chemical formula is Ca 0.5 Cd 0.5 S.

[0042] The preparation method of the above-mentioned calcium-doped cadmium sulfide nanosheets comprises the following steps:

[0043] Calcium chloride, cadmium acetate, thiourea and ethylenediamine were mixed and stirred for 30 minutes, and then reacted at 100°C for 8 hours. After drying, the calcium-doped cadmium sulfide nanosheets were obtained; calcium chloride, cadmium acetate and thiourea The molar ratio of ethylenediamine is 5:5:11, and the amount of ethylenediamine used is 60-80ml.

Embodiment 3

[0045] The present embodiment provides a kind of calcium-doped cadmium sulfide nanosheet, its chemical formula is Ca 0.1 Cd 0.9 S.

[0046] The preparation method of the above-mentioned calcium-doped cadmium sulfide nanosheets comprises the following steps:

[0047] Calcium chloride, cadmium acetate, thiourea and ethylenediamine were mixed and stirred for 30 minutes, and then reacted at 100°C for 8 hours. After drying, the calcium-doped cadmium sulfide nanosheets were obtained; calcium chloride, cadmium acetate and thiourea The molar ratio of ethylenediamine is 1:9:11, and the amount of ethylenediamine used is 60-80ml.

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Abstract

The invention discloses a calcium-doped cadmium sulfide nanosheet as well as a preparation method and application thereof, the chemical formula of the nanosheet is CaxCd1-xS, 0 lt; xlt; 1. The preparation method comprises the following steps: mixing and stirring calcium salt, cadmium salt, a sulfur source and ethylenediamine, reacting for 6-24 hours at 80-120 DEG C, and drying to obtain the calcium-doped cadmium sulfide nanosheet. The calcium-doped cadmium sulfide nanosheet disclosed by the invention can be effectively applied to a photocatalytic reaction system, and particularly can play an efficient catalytic role in a system for producing hydrogen by photocatalytic decomposition of water.

Description

technical field [0001] The invention relates to the technical field of photocatalysts, in particular to a calcium-doped cadmium sulfide nanosheet and its preparation method and application. Background technique [0002] Using clean energy in nature to replace fossil energy to solve the environmental pollution caused by the use of fossil energy is a major issue facing mankind since the 21st century. Hydrogen is a clean energy with high calorific value and zero pollution emissions, and is considered to be an ideal energy source to replace fossil fuels. In 1972, Fujishima and Honda first discovered that under the action of near-ultraviolet light (380nm), the photocatalytic decomposition of H on the n-type semiconductor anatase titanium dioxide single crystal electrode 2 O produces oxygen and simultaneously produces hydrogen on the counter electrode Pt. Since then, the selection of semiconductors with a suitable band gap and the use of optical responsivity of semiconductors to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G11/02B01J27/04C01B3/04
CPCC01G11/02B01J27/04C01B3/042C01P2004/04C01P2004/64C01P2002/72C01P2004/20B01J35/39B01J35/23
Inventor 李鑫沈荣晨任豆豆
Owner SOUTH CHINA AGRI UNIV