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Preparation method of rod-like Zn0.7Cd0.3S material

A rod-shaped, solution-based technology, applied in the field of photocatalytic materials, can solve the problems of product agglomeration, high energy consumption, and high temperature requirements, and achieve the effects of simple preparation process, high material purity, and strong crystallinity

Active Publication Date: 2021-06-11
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the co-precipitation method has a fast reaction speed, simple and easy-to-operate process, and excellent product quality, but it has high requirements for temperature, high energy consumption, and the product is prone to sintering or melting, and the reaction is not easy to control.
The process operation of the microemulsion method is relatively simple, the device is simple, the operation is convenient, and the particles are uniform, but a large amount of organic matter will be produced, which will have a certain impact on the environment, cause environmental pollution, and the reaction rate is difficult to control. The disposal of by-products increases the cost of the reaction
The thermal decomposition method is easy to operate and has a fast reaction rate, but it is easy to cause product agglomeration, and the temperature required for the reaction is high, which requires high energy and cost for production

Method used

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  • Preparation method of rod-like Zn0.7Cd0.3S material
  • Preparation method of rod-like Zn0.7Cd0.3S material
  • Preparation method of rod-like Zn0.7Cd0.3S material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] 1) Dissolve 0.2 g of lithium hydroxide in 60 ml of deionized water to form a solution with a concentration of 0.15 mol / L. Stir with a magnetic stirrer at room temperature for 10 min at a speed of 300 r / min to obtain solution A.

[0032] 2) Using zinc acetate dihydrate (Zn(Ac) 2 2H 2 O) and cadmium acetate dihydrate (Cd(Ac) 2 2H 2 O) is raw material, weighs 1.4mmol and 0.6mmol respectively, adds in the mixed solution A, carries out magnetic stirring 25min, and the rotating speed is 300r / min, forms the mixed solution B.

[0033] 3) Using 4,4'-dipyridyl disulfide as the sulfur source, weigh 4 mmol, add it into the mixed solution B, and perform magnetic stirring for 30 minutes at a speed of 300 r / min to form the mixed solution C.

[0034] 4) The mixed solution C is added to the polytetrafluoroethylene lining, the filling ratio is controlled at 60%, the reaction temperature is controlled at 160°C, and the reaction time is controlled at 12h.

[0035]5) After the reaction ...

Embodiment 2

[0037] 1) Dissolve 0.4g of lithium hydroxide in 50ml of deionized water to form a solution with a concentration of 0.4mol / L. Stir with a magnetic stirrer at room temperature for 10min at a speed of 400r / min to obtain solution A.

[0038] 2) Using zinc acetate dihydrate (Zn(Ac) 2 2H 2 O) and cadmium acetate dihydrate (Cd(Ac) 2 2H 2 O) is raw material, weighs 2.1mmol and 0.9mmol respectively, adds in the mixed solution A, carries out magnetic stirring 35min, and the rotating speed is 400r / min, forms the mixed solution B.

[0039] 3) Using 4,4'-dipyridyl disulfide as the sulfur source, weigh 5 mmol, add it into the mixed solution B, and perform magnetic stirring for 40 minutes at a speed of 400 r / min to form the mixed solution C.

[0040] 4) The mixed solution C is added to the polytetrafluoroethylene lining, the filling ratio is controlled at 50%, the reaction temperature is controlled at 180°C, and the reaction time is controlled at 12h.

[0041] 5) After the reaction is co...

Embodiment 3

[0043] 1) Dissolve 0.45g of lithium hydroxide in 70ml of deionized water to form a solution with a concentration of 0.3mol / L. Stir with a magnetic stirrer at room temperature for 10min at a speed of 400r / min to obtain solution A.

[0044] 2) Using zinc acetate dihydrate (Zn(Ac) 2 2H 2 O) and cadmium acetate dihydrate (Cd(Ac) 2 2H 2 O) is raw material, weighs 2.8mmol and 1.2mmol respectively, adds in mixed solution A, carries out magnetic stirring 20min, and rotating speed is 400r / min, forms mixed solution B.

[0045] 3) Using 4,4'-dipyridyl disulfide as the sulfur source, weigh 6 mmol, add it into the mixed solution B, and perform magnetic stirring for 30 minutes at a speed of 400 r / min to form the mixed solution C.

[0046] 4) The mixed solution C is added to the polytetrafluoroethylene lining, the filling ratio is controlled at 70%, the reaction temperature is controlled at 160°C, and the reaction time is controlled at 14h.

[0047] 5) After the reaction is completed, ce...

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Abstract

The invention discloses a preparation method of a rod-like Zn0.7Cd0.3S material. The preparation method comprises the following steps: 1, taking and dissolving lithium hydroxide in deionized water to prepare a solution with the concentration of 0.1-0.4 mol / L, and stirring by using a magnetic stirrer at room temperature to obtain a solution A; 2, weighing 1-3 mmol of a zinc source and 0.5-1.5 mmol of a cadmium source according to the molar ratio of nZn to nCd being 7: 3, adding the zinc source and the cadmium source into the solution A, and performing magnetic stirring to obtain a mixed solution B; 3, weighing 2-6 mmol of a sulfur source, adding the sulfur source into the mixed solution B, and performing magnetic stirring to form a mixed solution C; 4, adding the mixed solution C into a polytetrafluoroethylene lining, putting the polytetrafluoroethylene lining into a drying oven, and performing a hydrothermal reaction at a reaction temperature of 140-180 DEG C for 12-16 hours; and 5, after the reaction is completed, washing, and freeze-drying to obtain Zn0.7Cd0.3S material powder. The rod-like Zn0.7Cd0.3S sulfide is synthesized by adopting a one-pot hydrothermal method, the preparation process is simple, the cost is low, and the material is high in purity and strong in crystallinity.

Description

technical field [0001] The invention belongs to the field of photocatalytic materials, in particular to a rod-shaped Zn 0.7 Cd 0.3 The preparation method of S material. Background technique [0002] In today's society, with the progress and development of society, the degree of industrialization and artificial intelligence is getting higher and higher, and the requirements for the materials used are also getting higher and higher. Traditional materials cannot meet the needs of use, so more and more Functional materials and composite materials have been developed rapidly. The increasing depletion of traditional fossil fuels and the serious environmental pollution caused by their combustion have prompted people to look for clean new energy sources. Hydrogen energy, as an efficient clean energy source, has attracted much attention because of its broad application prospects. At present, steam reforming of methane, which is commonly used in industry, not only consumes huge ene...

Claims

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Application Information

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IPC IPC(8): C01G11/00C01B3/04B01J27/04
CPCC01G11/006C01B3/042B01J27/04C01P2002/72C01P2004/03C01P2004/30C01P2002/30Y02E60/36
Inventor 殷立雄刘长青高党鸽孔新刚陈禹飞李潞瑶黄剑锋郭瑶
Owner SHAANXI UNIV OF SCI & TECH