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A preparation method of rod-shaped self-assembled spherical zinc-cadmium-sulfur solid solution material

A self-assembled and spherical technology, applied in the preparation of cadmium compounds, chemical instruments and methods, cadmium compounds, etc., can solve the problem of high energy and cost requirements for production, products prone to sintering or melting, and the temperature required for reaction. Advanced problems, to achieve the effect of shortening the electron transmission distance, overcoming uneven heating, and fast heating

Active Publication Date: 2020-02-07
SHAANXI UNIV OF SCI & TECH
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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 microemulsion method has relatively simple operation, simple device, convenient operation, and uniform particles, 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 processing of the product 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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  • A preparation method of rod-shaped self-assembled spherical zinc-cadmium-sulfur solid solution material
  • A preparation method of rod-shaped self-assembled spherical zinc-cadmium-sulfur solid solution material
  • A preparation method of rod-shaped self-assembled spherical zinc-cadmium-sulfur solid solution material

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preparation example Construction

[0027] A method for preparing a rod-shaped self-assembled spherical zinc-cadmium-sulfur solid solution material, comprising the following steps:

[0028] Step 1: Add ethylenediamine to the water, stir it magnetically for 0.5-1 hour, and then perform ultrasonic treatment for 5-30 minutes at a power of 360W to form a mixed solution A; the volume ratio of water and ethylenediamine is (20-40): (5~10);

[0029]Step 2: Weigh zinc acetate dihydrate and cadmium nitrate tetrahydrate and add them to mixed solution A, and after magnetically stirring for 45 minutes, perform ultrasonic treatment at a power of 360W for 5-30 minutes to form mixed solution B; Add 0.1 ~ 0.5mmol zinc acetate dihydrate and 0.4 ~ 1.2mmol cadmium nitrate tetrahydrate, and n Zn :n Cd =1:4;

[0030] Step 3: Weigh L-cysteine ​​as a sulfur source and add it to the mixed solution B. After magnetically stirring for 15-30 minutes, perform ultrasonic treatment at a power of 360W for 5-30 minutes to form a mixed solutio...

Embodiment 1

[0035] 1) Measure 20mL H with a graduated cylinder 2 O, 5mL EN (ethylenediamine) was added thereinto to form a solution, and after magnetic stirring for 0.5h, ultrasound was carried out for 5min at a power of 360W to form a mixed solution A.

[0036] 2) Using zinc acetate dihydrate (Zn(Ac) 2 2H 2 O) and cadmium nitrate tetrahydrate (Zn(NO 3 ) 2 4H 2 O) is raw material (n Zn :n Cd =1:4), weighed 0.1mmol and 0.4mmol respectively, added to mixed solution A, stirred magnetically for 45min, and ultrasonicated at 360W for 5min to form mixed solution B.

[0037] 3) Using L-cysteine ​​as the sulfur source, weigh 1 mmol, add it into the mixed solution B, perform magnetic stirring for 15 minutes, and perform ultrasonication at a power of 360W for 5 minutes to form a mixed solution C.

[0038] 4) Add the mixed solution C into the polytetrafluoroethylene lining, control the filling ratio at 30%, control the reaction temperature at 140°C, and control the reaction time at 0.5h.

[0...

Embodiment 2

[0041] 1) Measure 30mL H with a graduated cylinder 2 O, 8mL EN (ethylenediamine) was added thereinto to form a solution, and after magnetic stirring for 0.8h, ultrasound was carried out for 15min at a power of 360W to form a mixed solution A.

[0042] 2) Using zinc acetate dihydrate (Zn(Ac) 2 2H 2 O) and cadmium nitrate tetrahydrate (Zn(NO 3 ) 2 4H 2 O) is raw material (n Zn :n Cd =1:4), weighed 0.2mmol and 0.8mmol respectively, added to mixed solution A, carried out magnetic stirring for 45min, and ultrasonicated at 360W power for 15min to form mixed solution B.

[0043] 3) Use L-cysteine ​​as the sulfur source, weigh 2 mmol, add it to the mixed solution B, perform magnetic stirring for 20 minutes, and perform ultrasonication at a power of 360W for 15 minutes to form a mixed solution C.

[0044] 4) The mixed solution C is added to the polytetrafluoroethylene lining, the filling ratio is controlled at 38%, the reaction temperature is controlled at 160° C., and the react...

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Abstract

The invention discloses a method for preparing a rod-shaped zinc cadmium sulfur solid solution material that self-assembles into a spherical shape. H is measured using a graduated cylinder. 2 OAdd 10 mL EN (ethylenediamine) into it to prepare a mixed solution, perform magnetic stirring and ultrasonic to form mixed solution A; use zinc acetate dihydrate and cadmium nitrate tetrahydrate as raw materials, add to mixed solution A, and perform magnetic stirring After mixing and ultrasonic, a mixed solution B is formed; L-cysteine ​​is used as the sulfur source and added to the mixed solution B. After magnetic stirring and ultrasonic, a mixed solution C is formed; the mixed solution C is added to the inner lining of polytetrafluoroethylene. In the process, a microwave hydrothermal reaction is carried out; after the reaction is completed, the zinc cadmium sulfur solid solution material powder can be obtained by centrifugal washing with deionized water and ethanol several times, and then drying and grinding.

Description

technical field [0001] The invention relates to the field of battery material preparation, in particular to a method for preparing a rod-shaped self-assembled spherical zinc-cadmium-sulfur solid solution 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 Ⅱ-Ⅵ compounds are the focus and hotspot of the current research, and they have been paid attention to because of their broad application prospects in the fields of semiconductor lasers, sensors, solid-state luminescence and solar cells. where Zn 1-x Cd x As a novel material with good photocatalytic performance, S(0≤x≤1) solid solution material has been exte...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G11/00B01J27/04
CPCC01G11/003B01J27/04C01P2004/03C01P2004/04C01P2002/84C01P2002/72C01P2004/61B01J35/39
Inventor 殷立雄李慧敏张峰张浩繁房佳萌黄剑锋孔新刚程如亮
Owner SHAANXI UNIV OF SCI & TECH
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