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Indium sulfide mesoporous hollow microsphere photocatalyst and preparation method and use thereof

A technology of indium sulfide mesoporous and photocatalyst, applied in the direction of physical/chemical process catalysts, chemical instruments and methods, chemical/physical processes, etc. Complex methods and other issues, to achieve excellent photocatalytic activity, reduce energy consumption and reaction costs, simple process effect

Active Publication Date: 2018-08-10
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] But pure β-In 2 S 3 It also has serious defects: electron-hole recombination is rapid. In the process of photocatalytic degradation, if a large number of electron-hole recombination, O 2 - The output will be greatly reduced, and the photocatalytic degradation efficiency of the catalyst will be greatly affected; in order to solve this shortcoming, people have also done a lot of work, such as the β-In 2 S 3 with C 3 N 4 、 Bi 2 S 3 、InVO 4 , RGO and other materials to form a heterojunction or adopt methods such as Au, Ag noble metal loading to improve its photocatalytic activity, but these methods have defects such as expensive material synthesis and complicated synthesis methods; the present invention adopts a simple synthesis and cheap material , a new type of carbon material with stable performance, carbon quantum dots (CQDs) modified β-In 2 S 3 , thereby improving its photocatalytic activity and chemical stability
[0006] So far, no one has used the hydrothermal method to synthesize carbon quantum dot-modified hollow microsphere nanomaterials.

Method used

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  • Indium sulfide mesoporous hollow microsphere photocatalyst and preparation method and use thereof
  • Indium sulfide mesoporous hollow microsphere photocatalyst and preparation method and use thereof
  • Indium sulfide mesoporous hollow microsphere photocatalyst and preparation method and use thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 2

[0046] Example 2 1wt%CQDs / In 2 S 3 preparation of

[0047] 1. Preparation of carbon quantum dots

[0048] 1. Dissolve 1.0507 g of citric acid and 335 µL of ethylenediamine in 10 ml of distilled water, and stir for 5 minutes to obtain solution A.

[0049] 2. Transfer the upper solution A to a 30ml reaction kettle lined with polytetrafluoroethylene, put it into an oven, and react at a temperature of 180°C for 5 hours.

[0050] 3. After naturally cooling to room temperature, dialyze to obtain solution B containing carbon quantum dots.

[0051] 4. Centrifuge solution B at 14000r / min for 10 minutes to obtain solution C.

[0052] 5. Solution C was freeze-dried for 24 hours to obtain carbon quantum dot powder.

[0053] 2. Preparation of carbon quantum dots modified mesoporous hollow microspheres indium sulfide

[0054] 1. Dissolve 1mmol indium chloride and 1.5mmol L-cysteine ​​in 25ml distilled water and stir for 5 minutes to obtain solution D.

[0055] 2. Add 3.2578 mg of car...

Embodiment 3

[0058] Example 3 3wt%CQDs / In 2 S 3 preparation of

[0059] 1. Preparation of carbon quantum dots

[0060] 1. Dissolve 1.0507 g of citric acid and 335 µL of ethylenediamine in 10 ml of distilled water, and stir for 5 minutes to obtain solution A.

[0061] 2 Transfer the upper solution A to a 30ml reaction kettle lined with polytetrafluoroethylene, put it into an oven, and react at a temperature of 180°C for 5 hours.

[0062] 3. After naturally cooling to room temperature, dialyze to obtain solution B containing carbon quantum dots.

[0063] 4. Centrifuge solution B at 14000r / min for 10 minutes to obtain solution C.

[0064] 5. Solution C was freeze-dried for 24 hours to obtain carbon quantum dot powder.

[0065] 2. Preparation of carbon quantum dots modified mesoporous hollow microspheres indium sulfide

[0066] 1. Dissolve 1mmol indium chloride and 1.5mmol L-cysteine ​​in 25ml distilled water and stir for 5 minutes to obtain solution D.

[0067] 2. Add 9.7734 mg of carb...

Embodiment 4

[0070] Example 4 5wt%CQDs / In 2 S 3 preparation of

[0071] 1. Preparation of carbon quantum dots

[0072] 1. Dissolve 1.0507 g of citric acid and 335 µL of ethylenediamine in 10 ml of distilled water, and stir for 5 minutes to obtain solution A.

[0073] 2 Transfer the upper solution A to a 30ml reaction kettle lined with polytetrafluoroethylene, put it into an oven, and react at a temperature of 180°C for 5 hours.

[0074] 3. After naturally cooling to room temperature, dialyze to obtain solution B containing carbon quantum dots.

[0075] 4. Centrifuge solution B at 14000r / min for 10 minutes to obtain solution C.

[0076] 5. Solution C was freeze-dried for 24 hours to obtain carbon quantum dot powder.

[0077] 2. Preparation of carbon quantum dots modified mesoporous hollow microspheres indium sulfide

[0078] 1. Dissolve 1mmol indium chloride and 1.5mmol L-cysteine ​​in 25ml distilled water and stir for 5 minutes to obtain solution D.

[0079] 2. Add 16.289 mg of carb...

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Abstract

The invention belongs to the technical field of nanometer material synthesis, and a carbon-quantum-dot-modified indium-sulfide (beta-In2S3) mesoporous hollow microsphere photocatalyst is synthesized in one step by utilizing a simple rapid hydrothermal method. The method comprises: dissolving indium chloride and L-cysteine in distilled water, and stirring to obtain a solution D; adding carbon quantum dot into the solution D, and stirring to obtain a solution E; transferring the solution E to a reaction kettle with a teflon inner liner, putting in a baking oven, and reacting at 150 DEG C for 24 h; and naturally cooling to room temperature, centrifuging to obtain a dark-red solid, washing and drying in vacuum, so as to obtain a sample. The indium-sulfide mesoporous hollow microsphere photocatalyst is applicable to degrade methyl orange dye under visible light.

Description

technical field [0001] The invention belongs to the technical field of nanomaterial synthesis, and uses a simple and rapid hydrothermal method to synthesize carbon quantum dot-modified indium sulfide (β-Indium sulfide) in one step. 2 S 3 ) mesoporous hollow microsphere photocatalyst, which can be used to degrade methyl orange dye under visible light. Background technique [0002] In recent decades, modern industry has developed rapidly, so the energy crisis and environmental pollution faced by the world are very severe; and photocatalytic technology has the characteristics of high efficiency and environmental friendliness, so it provides a rational use of energy and environmental pollution control for environmental protection. ideal method. [0003] Indium sulfide is a photocatalyst with visible light activity. There are mainly three crystal systems α-In 2 S 3 , β-In 2 S 3 and γ-In 2 S 3 ; Among them, β-In 2 S 3 and the other two structures of In 2 S 3 Compared w...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/04B01J35/08C02F1/30C02F101/38
CPCB01J27/04B01J35/08C02F1/30C02F2101/308C02F2101/38C02F2305/10
Inventor 施伟东黄长友刘奎立
Owner JIANGSU UNIV
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