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Nano flower-shaped zinc cadmium sulfide solid solution photocatalyst and preparation method thereof

A zinc-cadmium sulfide, photocatalyst technology, applied in physical/chemical process catalysts, chemical instruments and methods, inorganic chemistry, etc., can solve the problems of difficult control of reaction rate, easy sintering or melting of products, and large energy consumption. The effect of increasing reactive sites, improving photocatalytic performance, and increasing specific surface area

Active Publication Date: 2021-08-03
SHAANXI UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
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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 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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  • Nano flower-shaped zinc cadmium sulfide solid solution photocatalyst and preparation method thereof
  • Nano flower-shaped zinc cadmium sulfide solid solution photocatalyst and preparation method thereof
  • Nano flower-shaped zinc cadmium sulfide solid solution photocatalyst and preparation method thereof

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preparation example Construction

[0025] A kind of nano-flower-like Zn of multi-level structure of the present invention 0.6 Cd 0.4 The preparation method of S solid solution photocatalyst comprises the following steps:

[0026] Step 1: Take a certain amount of 1,2-diaminopropane and dissolve it in 2-6ml of deionized water to make a solution with a concentration of 0.4-1mmol / L. Stir with a magnetic stirrer at room temperature for 10-30min at a speed of 200 ~500r / min to obtain solution A;

[0027] Step 2: Using zinc acetate dihydrate (Zn(Ac) 2 2H 2 O) and cadmium acetate dihydrate (Cd(Ac) 2 2H 2 O) is raw material (n Zn :n Cd =6:4), and weigh 1 to 3 mmol of zinc acetate dihydrate, add it into solution A, and stir it magnetically for 20 to 40 minutes to form solution B.

[0028] Step 3: Use sodium hydrosulfide as the sulfur source, weigh 2-6 mmol, add it into solution B, and perform magnetic stirring for 20-40 minutes at a speed of 200-500 r / min to form solution C.

[0029] Step 4: Add solution C to the...

Embodiment 1

[0032] A kind of nano-flower-like Zn of multi-level structure of the present invention 0.6 Cd 0.4The preparation method of S solid solution photocatalyst comprises the following steps:

[0033] 1) Dissolve 2ml of 1,2-diaminopropane in 60ml of deionized water to make a solution with a concentration of 0.4mmol / mL. Stir with a magnetic stirrer at room temperature for 10min at a speed of 400r / min to obtain solution A.

[0034] 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 1.2mmol and 0.8mmol respectively, adds in the mixed solution A, carries out magnetic stirring after 30min, forms the solution B.

[0035] 3) Sodium hydrosulfide was used as the sulfur source, 3 mmol was weighed, added to solution B, and magnetically stirred at 500 r / min for 25 minutes to form solution C.

[0036] 4) The solution C is added into the polytetrafluoroethylene lining, the filling ratio is controlled at 60%, the reaction ...

Embodiment 2

[0039] A kind of nano-flower-like Zn of multi-level structure of the present invention 0.6 Cd 0.4 The preparation method of S solid solution photocatalyst comprises the following steps:

[0040] 1) Dissolve 3.5ml of 1,2-diaminopropane in 50ml of deionized water to make a solution with a concentration of 0.8mmol / L. Stir with a magnetic stirrer at room temperature for 10min at a speed of 450r / min to obtain solution A.

[0041] 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 1.8mmol and 1.2mmol respectively, adds in the mixing solution A, carries out magnetic stirring after 35min, forms the solution B.

[0042] 3) Using sodium hydrosulfide as the sulfur source, weigh 5 mmol, add it into solution B, and perform magnetic stirring at 500 r / min for 25 minutes to form solution C.

[0043] 4) The solution C is added to the polytetrafluoroethylene lining, the filling ratio is controlled at 50%, the reaction ...

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Abstract

The invention provides a nano flower-shaped zinc cadmium sulfide solid solution photocatalyst and a preparation method thereof, and belongs to the technical field of photocatalytic materials. The preparation method comprises the steps of: dissolving zinc acetate, cadmium acetate and sodium hydrosulfide in an aqueous solution of 1, 2-diaminopropane to obtain a precursor solution, the molar ratio of the zinc acetate to the cadmium acetate being 3: 2; and carrying out hydrothermal reaction on the precursor solution at 120-160 DEG C, separating a product in the obtained reaction solution, and sequentially washing and drying the product to obtain the nano flower-shaped zinc cadmium sulfide solid solution photocatalyst. The nano flower-shaped Zn0.6Cd0.4S sulfide with a multilevel structure is synthesized by adopting a one-pot hydrothermal method, the cost is low, the material purity is high, the crystallinity is strong, and a reference is provided for later preparation of multi-component solid solution photocatalyst powder.

Description

technical field [0001] The invention belongs to the technical field of photocatalytic material preparation, in particular to a nano flower-shaped zinc cadmium sulfide solid solution photocatalyst and a preparation method thereof. Background technique [0002] With the increasing degree of industrialization and artificial intelligence, people have higher and higher requirements for the materials used. Traditional materials cannot meet the needs of use. Therefore, more and more functional materials and composite materials are rapidly developed. develop. 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, a hydrogen production method commonly used in industry, not only consumes huge energ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/04C01B3/04
CPCB01J27/04C01B3/042C01B2203/0277C01B2203/1076B01J35/39Y02E60/36
Inventor 殷立雄刘长青高党鸽孔新刚李潞瑶黄剑锋陈禹飞郭瑶
Owner SHAANXI UNIV OF SCI & TECH
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