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Method for preparing hierarchical floriform ZnIn2S4 ternary compound

A ternary compound, znin2s4 technology, applied in chemical instruments and methods, gallium/indium/thallium compounds, inorganic chemistry, etc., can solve the problems of small specific surface area and low photocatalytic activity, achieve increased specific surface area and simple process , medium size effect

Inactive Publication Date: 2012-11-28
HEILONGJIANG UNIV
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  • Summary
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Problems solved by technology

[0004] The present invention is to solve the existing ZnIn 2 S 4 The specific surface area of ​​the ternary compound is small, and the technical problem of visible light catalytic activity is low, and a hierarchical flower-like ZnIn is provided 2 S 4 The preparation method of ternary compound

Method used

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  • Method for preparing hierarchical floriform ZnIn2S4 ternary compound
  • Method for preparing hierarchical floriform ZnIn2S4 ternary compound
  • Method for preparing hierarchical floriform ZnIn2S4 ternary compound

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specific Embodiment approach 1

[0019] Specific embodiment one: a kind of graded flower shape ZnIn of this embodiment 2 S 4 The preparation method of ternary compound is carried out as follows:

[0020] 1. According to the Zn in the solution 2+ The molar concentration is 0.03~0.08mol / L, the inorganic zinc salt is added to the mixed alcohol solution, and the temperature is 30~50°C, and the mixture is stirred until the inorganic zinc salt is completely dissolved to obtain the mixed alcohol solution of the inorganic zinc salt;

[0021] Second, according to the Zn in the solution 2+ and In 3+ The molar ratio is 1:(1.5~2.5), adding the inorganic indium salt to the mixed alcohol solution of the inorganic zinc salt obtained in step 1, and stirring until the inorganic indium salt is completely dissolved at a temperature of 30~50°C to obtain Mixed alcohol solution of inorganic zinc salt and inorganic indium salt;

[0022] 3. According to the Zn in the solution 2+ with S 2- The molar ratio is 1: (4~12), add cys...

specific Embodiment approach 2

[0026] Embodiment 2: This embodiment differs from Embodiment 1 in that the mixed alcohol solution described in step 1 is composed of absolute ethanol and glycerin in any ratio, and other steps and parameters are the same as Embodiment 1.

specific Embodiment approach 3

[0027] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is: in step one, according to Zn in the solution 2+ The molar concentration is 0.04~0.07mol / L, and the inorganic zinc salt is added to the mixed alcohol solution, and other steps and parameters are the same as those in Embodiment 1 or 2.

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Abstract

A method for preparing a hierarchical floriform ZnIn2S4 ternary compound relates to a method for preparing a nano-ZnIn2S4 ternary compound. The method provided by the invention aims to solve the technical problems of small specific surface area and low visible-light catalytic activity of the existing ZnIn2S4 ternary compound. The preparation method provided by the invention comprises the following steps of: firstly, adding an inorganic zinc salt to mixed alcohol solution, and then adding in an inorganic indium salt, and further adding in a sulfur source to the mixed solution and stirring after the inorganic indium salt is dissolved; and finally, arousing a reaction in a high-pressure reaction kettle lined with polytetrafluoroethylene, and then performing cooling, separation, washing and drying, thereby obtaining the hierarchical floriform ZnIn2S4 ternary compound. The preparation method provided by the invention is simple in process and low in cost; the obtained ZnIn2S4 ternary compound has a hierarchical floriform structure; the specific surface area of the ZnIn2S4 ternary compound is large, which is 71-98 m<2> / g; besides, the ZnIn2S4 ternary compound is tough in surface and thereby high in visible-light catalytic activity; and therefore, the ZnIn2S4 ternary compound can be applied to the fields such as solar cells, electrochemistry, environmental catalysis and the like.

Description

technical field [0001] The present invention relates to a kind of nanometer ZnIn 2 S 4 Preparation methods of ternary compounds. Background technique [0002] Energy and the environment are the two major themes of current scientific research. Semiconductor photocatalytic materials have shown great potential in solving environmental pollution and energy shortages. At present, they have been widely used in the deep purification of pollutants, sterilization, and photocatalytic water splitting to produce hydrogen. In many fields such as dye-sensitized solar cells, due to the continuous improvement of people's environmental quality requirements and the development of existing environmental protection technologies, highly active semiconductor photocatalytic materials are highly valued for their important applications in sewage treatment and air purification. people's attention. [0003] Zn 2 S 4 It is a typical visible light-responsive semiconductor catalytic material, that i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G15/00B82Y30/00
Inventor 田国辉付宏刚周娟陈亚杰孟祥影
Owner HEILONGJIANG UNIV
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