In2O3@ZnIn2S4 nanosheet material and preparation method and application thereof

Abstract

The invention discloses an In2O3@ZnIn2S4 nanosheet material and a preparation method and application thereof. The method comprises the following steps: dissolving indium oxide in acidic water to obtain an indium oxide solution; and then adding zinc chloride, indium trichloride and thioacetamide into the indium oxide solution for a reaction; and carrying out washing and drying to obtain the In2O3@ZnIn2S4 nanosheet material, wherein a molar mass ratio of indium oxide to zinc chloride to indium trichloride to thioacetamide is 1: 2: 2: 5. The preparation method for the In2O3@ZnIn2S4 nanosheet material in the invention is simple and convenient in operation and low in cost; the prepared photocatalyst material, i.e., the In2O3@ZnIn2S4 nanosheet material, has extremely high targeting properties and degradation efficiency, and the degradation rate of 2,4-dichlorophenol in surface water can reach 93.2%; and the photocatalyst material can be recycled and still has high degradation rate after being used multiple times, so the treatment cost of 2,4-dichlorophenol is greatly reduced. Treatment with the photocatalyst material is efficient and energy-saving, and can meet national detection requirements on 2,4-dichlorophenol in surface water in China.

Description

technical field

[0001] The invention belongs to the field of environmental protection and relates to In 2 o 3 @ZnIn 2 S 4 Nanosheet material, preparation method and application thereof, specifically related to 3D / 2D Indium for degradation of 2,4-dichlorophenol in surface water 2 o 3 @ZnIn 2 S 4 Nanosheet materials, preparation methods and applications. Background technique

[0002] Zn 2 S 4 It is a very important semiconductor photocatalyst material with visible light response performance, and its band gap is only about 2.3eV, which also makes it able to absorb and utilize solar energy efficiently. In the past ten years, ZnIn 2 S 4 It has been widely used in the research of photocatalytic water splitting to produce hydrogen and photocatalytic degradation of organic and inorganic pollutants in water or air under visible light. But a single ZnIn 2 S 4 The transport and separation efficiency of internal photogenerated charges is low, and the bulk phase recombinati...

Examples

Embodiment 1

[0028] Following the above technical solution, this embodiment provides 3D / 2D In 2 o 3 @ZnIn 2 S 4 Nanosheet materials, preparation methods and applications. Include the following steps:

[0029] Add 0.075g of In 2 o 3 (0.2 mmol) was dissolved in 20 mL of deionized water at pH 2.5 and stirred vigorously at room temperature for 0.5 h. Then 0.068g ZnCl 2 (0.4mmol), 0.147g InCl 3 4H 2 O (0.4mmol) and 0.075g thioacetamide (TAA) (1mmol) were added to the above solution and stirred vigorously for 5 minutes; then, the above mixture solution was transferred to a water bath at 80°C and stirred for 2 hours; after cooling to room temperature, The samples were collected by centrifugation, washed three times with deionized water and ethanol, and dried in a drying oven at 60 °C for 2 h to obtain 3D / 2D In 2 o 3 @ZnIn 2 S 4 nanosheet material. The electron microscope image of the material is shown in figure 1 shown. Zn 2 S 4 Nanosheets are attached with In 2 o 3 , the part...

technical field

[0001] The invention belongs to the field of environmental protection and relates to In 2 o 3 @ZnIn 2 S 4 Nanosheet material, preparation method and application thereof, specifically related to 3D / 2D Indium for degradation of 2,4-dichlorophenol in surface water 2 o 3 @ZnIn 2 S 4 Nanosheet materials, preparation methods and applications. Background technique

[0002] Zn 2 S 4 It is a very important semiconductor photocatalyst material with visible light response performance, and its band gap is only about 2.3eV, which also makes it able to absorb and utilize solar energy efficiently. In the past ten years, ZnIn 2 S 4 It has been widely used in the research of photocatalytic water splitting to produce hydrogen and photocatalytic degradation of organic and inorganic pollutants in water or air under visible light. But a single ZnIn 2 S 4 The transport and separation efficiency of internal photogenerated charges is low, and the bulk phase recombinati...

Examples

Embodiment 1

[0028] Following the above technical solution, this embodiment provides 3D / 2D In 2 o 3 @ZnIn 2 S 4 Nanosheet materials, preparation methods and applications. Include the following steps:

[0029] Add 0.075g of In 2 o 3 (0.2 mmol) was dissolved in 20 mL of deionized water at pH 2.5 and stirred vigorously at room temperature for 0.5 h. Then 0.068g ZnCl 2 (0.4mmol), 0.147g InCl 3 4H 2 O (0.4mmol) and 0.075g thioacetamide (TAA) (1mmol) were added to the above solution and stirred vigorously for 5 minutes; then, the above mixture solution was transferred to a water bath at 80°C and stirred for 2 hours; after cooling to room temperature, The samples were collected by centrifugation, washed three times with deionized water and ethanol, and dried in a drying oven at 60 °C for 2 h to obtain 3D / 2D In 2 o 3 @ZnIn 2 S 4 nanosheet material. The electron microscope image of the material is shown in figure 1 shown. Zn 2 S 4 Nanosheets are attached with In 2 o 3 , the part...

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