A method and application of in situ heterostructure construction based on indium zinc sulfide nanosheets

A heterostructure and nanosheet technology, applied in chemical instruments and methods, carbon monoxide, physical/chemical process catalysts, etc., can solve the problems of 2D nanosheet heterostructure construction method and insufficient binding force, and achieve good popularization and application value. , The effect of simple process conditions and low cost

Active Publication Date: 2022-07-12
FUZHOU UNIV
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  • Application Information

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Problems solved by technology

[0005] Aiming at the problems of 2D nanosheet heterostructure construction method and insufficient binding force, the present invention provides a green synthesis method with simple process and in-situ growth of strong binding force heterojunction on 2D nanosheets

Method used

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  • A method and application of in situ heterostructure construction based on indium zinc sulfide nanosheets
  • A method and application of in situ heterostructure construction based on indium zinc sulfide nanosheets
  • A method and application of in situ heterostructure construction based on indium zinc sulfide nanosheets

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Experimental program
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Effect test

Embodiment 1

[0038] In 2 O 3 @ZnIn 2 S 4 Preparation of heterojunction:

[0039] (1) Weigh 87.8 mg of zinc acetate dihydrate (Zn(CH) with an electronic balance. 3 COO) 2 ·2H 2 O), 234.5 mg of indium chloride tetrahydrate (InCl 3 ·4H 2 O), 120 mg of thioacetamide (CH 3 CSNH 2 ), added to a mixed solution of 15 mL of deionized water and 15 mL of anhydrous ethanol, and magnetically stirred for 30 min at a stirring speed of 1000 rpm to obtain a uniformly dispersed reaction precursor;

[0040] (2) The reaction precursor solution was then transferred to a 50 mL PTFE-lined stainless steel autoclave, and the reaction was carried out at a constant temperature of 180 °C in a drying oven for 24 h. After the reaction was completed, it was cooled to room temperature with the furnace;

[0041] (3) Centrifuge the sample with a centrifuge to obtain a yellow solid powder at a speed of 10,000 rpm; wash it twice with deionized water and ethanol, respectively, and dry it in the air at 60 °C overnigh...

Embodiment 2

[0045] In(OH) 3 @ZnIn 2 S 4 Preparation of heterojunction:

[0046] (1) Weigh 87.8 mg of zinc acetate dihydrate (Zn(CH) with an electronic balance. 3 COO) 2 ·2H 2 O), 234.5 mg of indium chloride tetrahydrate (InCl 3 ·4H 2 O), 120 mg of thioacetamide (CH 3 CSNH 2 ), added to a mixed solution of 15 mL of deionized water and 15 mL of anhydrous ethanol, and magnetically stirred for 30 min at a stirring speed of 1000 rpm to obtain a uniformly dispersed reaction precursor;

[0047] (2) The reaction precursor solution was then transferred to a 50 mL PTFE-lined stainless steel autoclave, and the reaction was carried out at a constant temperature of 180 °C in a drying oven for 24 h. After the reaction was completed, it was cooled to room temperature with the furnace;

[0048] (3) Centrifuge the sample with a centrifuge to obtain a yellow solid powder at a speed of 10,000 rpm; wash it twice with deionized water and ethanol respectively, and dry it in the air at 60 °C overnight ...

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Abstract

The invention belongs to the technical field of preparation of nanomaterials, and discloses a kind of ZnIn based on sulfur indium zinc. 2 S 4 The method of nanosheet in situ heterostructure construction uses zinc acetate dihydrate and indium chloride tetrahydrate as raw materials, thioacetamide as sulfur source, deionized water and ethanol as solvents, and obtains ultra-thin and uniform ZnIn 2 S 4 nanosheets and in situ construction of heterojunction In situ in aqueous ammonia solution 2 O 3 @ZnIn 2 S 4 , In(OH) 3 @ZnIn 2 S 4 . ZnIn prepared by the present invention 2 S 4 Nanosheet in situ heterojunctions can effectively inhibit the recombination of photogenerated electron-hole pairs, which can be used in photocatalytic CO 2 It shows excellent performance in reduction. The invention has the advantages of simple preparation process, short period, low cost, large-scale industrial production, and good economic and environmental benefits.

Description

technical field [0001] The invention belongs to the technical field of nanomaterial preparation, and in particular relates to a kind of ZnIn based on sulfur indium zinc 2 S 4 Method and application of nanosheet in situ heterostructure construction. Background technique [0002] Semiconductor photocatalysis technology directly utilizes solar energy to manufacture high value-added chemicals, such as solar fuel, and has many applications in pollutant degradation, so it has attracted widespread attention. The structure of semiconductor photocatalysts greatly affects their photocatalytic performance, and engineering them into suitable nanostructures is a reliable strategy to enhance catalytic functions. In particular, heterostructures with ultrathin 2D nanosheets have multiple inherent advantages in semiconductor photocatalysis. During the recombination process in different semiconductors forming heterojunctions, the light absorption threshold can be effectively enlarged, and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/04C01B32/40
CPCB01J27/04B01J35/004C01B32/40Y02P70/50
Inventor 于岩赵林庄赞勇
Owner FUZHOU UNIV
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