A preparation method of high-efficiency visible light degradation agent nanosheet in2.77s4

A nano-flaky, visible light technology, which is applied in the direction of catalyst activation/preparation, chemical instruments and methods, light water/sewage treatment, etc., can solve the problems of organic matter and heavy metal pollution, complex synthetic methods of degradants, and low preparation efficiency, and achieve High degradation efficiency, excellent photoresponse effect, and small band gap

Inactive Publication Date: 2018-10-02
SHIJIAZHUANG TIEDAO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The pollution of organic matter and heavy metals in water has always been a major problem for human beings. The birth of photodegradants provides a "green and environmentally friendly" dawn to solve this problem, but traditional photodegradants such as TiO 2 , ZnO, etc., the band gap is greater than 2.9eV, the band gap is wide, and it is not sensitive to visible light and infrared light. It only has a good degradation effect under ultraviolet light, and ultraviolet light accounts for only 5% of the total sunlight. about
But, the synthetic method of above-mentioned degradation agent is more complicated, and technological process is longer, and preparation efficiency is low

Method used

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  • A preparation method of high-efficiency visible light degradation agent nanosheet in2.77s4
  • A preparation method of high-efficiency visible light degradation agent nanosheet in2.77s4
  • A preparation method of high-efficiency visible light degradation agent nanosheet in2.77s4

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] 1. Weigh an appropriate amount of In(NO 3 ) 3 4.5H 2 O (Sinopharm Chemical Reagent Co., Ltd., the same below), thioacetamide (Sinopharm Chemical Reagent Co., Ltd., the same below) were fully dissolved in deionized water, and then placed in a polytetrafluoroethylene-lined hydrothermal reaction kettle ; Wherein, the indium ion concentration is 0.05mol / L, and the molar ratio of indium and sulfur is 1:3.

[0023] 2. Control the hydrothermal reaction temperature to 180°C and the reaction time to 14 hours. After the reaction, the reaction kettle is naturally cooled to room temperature.

[0024] 3. Take the product in step 2 out of the reaction kettle, repeatedly wash and filter with deionized water until neutral, and then dry to obtain a powder In 2.77 S 4 .

[0025] 4. Weigh 0.05g of In 2.77 S 4 Products were respectively placed in 10mg / L rhodamine B solution, 10mg / L methyl orange solution, and 70mg / L potassium dichromate solution, and were subjected to photocatalytic...

Embodiment 2

[0027] 1. Weigh an appropriate amount of In(NO 3 ) 3 4.5H 2 O, thioacetamide is fully dissolved in deionized water, and then placed in a hydrothermal reaction kettle lined with polytetrafluoroethylene; wherein, the indium ion concentration is 0.05mol / L, and the molar ratio of indium and sulfur is 1: 4.

[0028] 2. Control the hydrothermal reaction temperature to 180°C and the reaction time to 15 hours. After the reaction, the reaction kettle is naturally cooled to room temperature.

[0029] 3. Take the product in step 2 out of the reaction kettle, wash it repeatedly with deionized water, filter it until it is neutral, and then dry it to obtain a powder In 2.77 S 4 .

[0030] 4. Weigh 0.05g of In 2.77 S 4 Products were respectively placed in 10mg / L rhodamine B solution, 10mg / L methyl orange solution, and 70mg / L potassium dichromate solution, and were subjected to photocatalytic degradation experiments under 300W xenon lamp irradiation. Use filters to filter out UV light...

Embodiment 3

[0033] 1. Weigh an appropriate amount of In(NO 3 ) 3 4.5H 2 O, thioacetamide is fully dissolved in deionized water, and then placed in a hydrothermal reaction kettle lined with polytetrafluoroethylene; wherein, the indium ion concentration is 0.05mol / L, and the molar ratio of indium and sulfur is 1: 5.

[0034] 2. Control the hydrothermal reaction temperature to 180°C and the reaction time to 14 hours. After the reaction, the reaction kettle is naturally cooled to room temperature.

[0035] 3. Take the product in step 2 out of the reaction kettle, repeatedly wash and filter with deionized water until neutral, and then dry to obtain a powder In 2.77 S 4 .

[0036] 4. Weigh 0.05g of In 2.77 S 4 Products were respectively placed in 10mg / L rhodamine B solution, 10mg / L methyl orange solution, and 70mg / L potassium dichromate solution, and were subjected to photocatalytic degradation experiments under 300W xenon lamp irradiation. Use filters to filter out UV light. The exper...

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Abstract

The invention relates to a preparation method of a high-efficiency visible light degradation agent nanosheet In2.77S4. The method comprises the following steps: A. material preparation: sufficiently dissolving In(NO3)3.4.5H2O and thioacetamide in deionized water, and putting the sollution in a teflon-lined hydrothermal reaction kettle, wherein the indium ion concentration is 0.05 mol / L, and the mole ratio of indium ions to sulfur ions is 1:3-1:5; B. reaction: reacting for 14-16 hours while controlling the hydrothermal reaction temperature at 180 DEG C, and after the reaction finishes, naturally cooling the reaction kettle to room temperature; and C. after-treatment: taking the product out of the reaction kettle, repeatedly washing with deionized water, carrying out vacuum filtration to a neutral state, and drying to obtain the sheet In2.77S4. The method has the advantages of simple technique, mild reaction conditions, short technical process and high preparation efficiency. The obtained product has high degradation efficiency for rhodamine B, methyl orange and potassium dichromate under visible light.

Description

technical field [0001] The invention belongs to the technical field of photodegradant materials, and relates to a preparation method of a photodegradant, in particular to nano-sheet In 2.77 S 4 method of preparation. Background technique [0002] The pollution of organic matter and heavy metals in water has always been a major problem for human beings. The birth of photodegradants provides a "green and environmentally friendly" dawn to solve this problem, but traditional photodegradants such as TiO 2 , ZnO, etc., the band gap is greater than 2.9eV, the band gap is wide, and it is not sensitive to visible light and infrared light. It only has a good degradation effect under ultraviolet light, and ultraviolet light accounts for only 5% of the total sunlight. about. Therefore, improving the photodegradation efficiency and obtaining high-efficiency photodegradants under visible light has become a world hotspot in recent years. It is generally believed that substances with a ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/04B01J35/02C02F1/30C02F101/22C02F101/30
CPCB01J27/04B01J35/004B01J35/02B01J37/10C02F1/30C02F2101/22C02F2101/308
Inventor 吴湘锋李惠孙洋杨新月赵泽华张琛旭王一瑾
Owner SHIJIAZHUANG TIEDAO UNIV
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