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Method for preparing SnIn4S photocatalyst through low-temperature coprecipitation method

A technology of indium tin sulfide light and co-precipitation method, which is applied in physical/chemical process catalysts, chemical instruments and methods, catalyst activation/preparation, etc., can solve the problems of long reaction time, high reaction temperature, and high energy consumption, and achieve synthesis The effect of low reaction temperature, mild preparation conditions and low energy consumption

Inactive Publication Date: 2014-03-26
NANCHANG HANGKONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the traditional preparation of SnIn 4 S 8 The method is a hydrothermal method, which has the disadvantages of high reaction temperature, high energy consumption, and long reaction time.

Method used

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  • Method for preparing SnIn4S photocatalyst through low-temperature coprecipitation method
  • Method for preparing SnIn4S photocatalyst through low-temperature coprecipitation method
  • Method for preparing SnIn4S photocatalyst through low-temperature coprecipitation method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] (1) Add 1.2 mmol of tin chloride and 4.8 mmol of indium chloride into 90 mL of ethanol solution and stir, then add 12 mmol of thioacetamide, and stir until the solution is transparent.

[0018] (2) Transfer the solution to a 150 mL single-necked flask, add a condensing reflux device, and stir at an appropriate rate, and the temperature of the water bath is 60 o C, the water bath time is 3 hours.

[0019] (3) The sample after the water bath was suction filtered and washed three times with deionized water and ethanol, and the obtained sample was at 80 o C for 24 hours. Then take it out, let it cool naturally, and grind it. The resulting product is an indium tin sulfide photocatalyst, which can completely degrade methyl orange within 50 minutes.

Embodiment 2

[0021] (1) Add 1.2 mmol of tin chloride and 4.8 mmol of indium chloride into 90 mL of ethanol solution and stir, then add 12 mmol of thioacetamide, and stir until the solution is transparent.

[0022] (2) Transfer the solution to a 150 mL single-necked flask, add a condensing reflux device, and stir at an appropriate rate, and the temperature of the water bath is 90 o C, the water bath time is 7 hours.

[0023] (3) The sample after the water bath was suction-filtered and washed three times with deionized water and ethanol. o C for 6 hours. Then take it out, let it cool naturally, and grind it. The resulting product is an indium tin sulfide photocatalyst, which can completely degrade methyl orange within 40 minutes.

Embodiment 3

[0025] (1) Add 1.2 mmol tributyltin chloride and 4.8 mmol indium nitrate to 90 mL ethylene glycol solution and stir, then add 12 mmol thioacetamide and stir until the solution is transparent.

[0026] (2) Transfer the solution to a 150 mL single-necked flask, add a condensing reflux device, and stir at an appropriate rate, and the temperature of the water bath is 60 o C, the water bath time is 3 hours.

[0027] (3) The sample after the water bath was suction filtered and washed three times with deionized water and ethanol, and the obtained sample was at 80 o C for 24 hours. Then take it out, let it cool naturally, and grind it. The resulting product is an indium tin sulfide photocatalyst, which can completely degrade methyl orange within 50 minutes.

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Abstract

The invention relates to a method for preparing a SnIn4S photocatalyst through a low-temperature coprecipitation method. The method is characterized by comprising the following steps: using soluble tin salt as a tin source, soluble indium salt as an indium source, thiourea or thioacetamide as a sulfur source, and methanol, ethanol, propanol and glycol as solvents, performing condensing refluxing at 60-90 DEG C, stirring at a constant speed, and reacting for 3-7 hours; cooling to room temperature, performing suction filtration on a sample, rinsing with deionized water and ethanol for three times, drying the obtained sample for 6-24 hours at 80-120 DEG C to obtain the SnIn4S photocatalyst with relatively higher activity. The SnIn4S photocatalyst can effectively degrade methyl orange, rhodamine B and other organic pollutants in visible light and reduce some heavy metal ions; the method has the significant advantages of simpleness, easiness, low reaction temperature, low energy consumption, short response time and high yield; the product of SnIn4S has very high photocatalytic performance.

Description

technical field [0001] The invention relates to a method for preparing indium tin sulfide, in particular to a method for preparing indium tin sulfide photocatalyst by a low-temperature co-precipitation method. Background technique [0002] With the rapid development of industry, the types and quantities of wastewater have increased rapidly, and the pollution of water bodies has become increasingly widespread and serious, threatening human health and safety, and even cancer villages have appeared in some places in China. Therefore, the treatment of wastewater is imminent. Methyl orange, methylene blue, rhodamine B, nitrophenol and some heavy metals are common pollutants in wastewater, and many physical and chemical methods have been applied to treat pollutants in wastewater, such as biochemical methods, physical adsorption, electrocoagulation, Ultracentrifugation, wet air oxidation. However, most of these methods have problems such as low efficiency, high energy consumption...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/04B01J37/03
Inventor 邓芳赵祥曾桂生罗旭彪罗胜联
Owner NANCHANG HANGKONG UNIVERSITY
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