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Indium-sulfide mesoporous hollow microsphere photocatalyst, and preparation method and uses 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., can solve the influence of photocatalytic degradation efficiency of catalysts, have not yet discovered hollow microsphere nanomaterials, synthesized Expensive and other issues, to achieve excellent photocatalytic activity, reduce energy consumption and reaction costs, and short reaction time

Active Publication Date: 2016-04-13
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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 uses thereof
  • Indium-sulfide mesoporous hollow microsphere photocatalyst, and preparation method and uses thereof
  • Indium-sulfide mesoporous hollow microsphere photocatalyst, and preparation method and uses thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 21

[0046] Example 21wt%CQDs / In 2 S 3 preparation of

[0047] 1. Preparation of carbon quantum dots

[0048] 1. Dissolve 1.0507g of citric acid and 335μL of ethylenediamine in 10ml 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. Solution B was centrifuged 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] 1.1 mmol of indium chloride and 1.5 mmol of L-cysteine ​​were dissolved in 25 ml of distilled water and stirred for 5 minutes to obtain solution D.

[0055] 2....

Embodiment 33

[0058] Example 33wt%CQDs / In 2 S 3 preparation of

[0059] 1. Preparation of carbon quantum dots

[0060] 1. Dissolve 1.0507g of citric acid and 335μL of ethylenediamine in 10ml 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. Solution B was centrifuged 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] 1.1 mmol of indium chloride and 1.5 mmol of L-cysteine ​​were dissolved in 25 ml of distilled water and stirred for 5 minutes to obtain solution D.

[0067] 2. ...

Embodiment 45

[0070] Example 45wt%CQDs / In 2 S 3 preparation of

[0071] 1. Preparation of carbon quantum dots

[0072] 1. Dissolve 1.0507g of citric acid and 335μL of ethylenediamine in 10ml 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. Solution B was centrifuged 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] 1.1 mmol of indium chloride and 1.5 mmol of L-cysteine ​​were dissolved in 25 ml of distilled water and stirred for 5 minutes to obtain solution D.

[0079] 2. ...

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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 wi...

Claims

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Application Information

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IPC IPC(8): B01J27/04B01J35/08C02F1/30C02F101/38
CPCC02F1/30B01J27/04C02F2101/308C02F2101/38C02F2305/10B01J35/51
Inventor 施伟东黄长友刘奎立
Owner JIANGSU UNIV
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