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Preparation method of tin indium sulfide/squaraine composite visible light catalyst

A technology of indium tin sulfide and squaraine is applied in the field of photocatalysis and achieves the effects of easy control of preparation conditions, high catalytic efficiency and simple preparation method

Active Publication Date: 2017-09-01
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved in the present invention is: based on the above problems, the present invention adopts ultrasonic impregnation method to sensitize and prepare indium tin sulfide / squarine compound visible light catalyst. This catalyst can be applied in photocatalysis technology, and can quickly and effectively remove of organic pollutants

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  • Preparation method of tin indium sulfide/squaraine composite visible light catalyst
  • Preparation method of tin indium sulfide/squaraine composite visible light catalyst
  • Preparation method of tin indium sulfide/squaraine composite visible light catalyst

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Embodiment 1

[0022] (1) Preparation of indium tin sulfide: Weigh 0.4207g of tin tetrachloride pentahydrate and 1.4088g of indium trichloride tetrahydrate, dissolve them in 96mL of absolute ethanol solution, stir until the solution is clear and transparent, add 0.7212 g of thioacetamide was continuously stirred for 30 minutes, then transferred into a high-pressure reactor, reacted at 160°C for 12 hours, cooled, washed and dried.

[0023] (2) Synthesis of symmetrical indole squaraine dyes: Weigh 0.145g N-2,3,3-trimethylindole and 0.052g squaraine into a three-necked flask, add 20mL n-butanol and 20mL Toluene mixed solvent, connect the condenser tube and the Stokes trap, and heat to reflux at 105°C for 10h. After the reaction, it was cooled to room temperature, vacuum-filtered and dried, and then separated and purified by column chromatography.

[0024] (3) Preparation of indium tin sulfide / squarine composite photocatalyst: Weigh 0.1g of indium tin sulfide in 30mL of absolute ethanol, 0.01g ...

Embodiment 2

[0026] (1) Preparation of indium tin sulfide: Weigh 0.1728g of tin tetrachloride pentahydrate and 0.5786g of indium trichloride tetrahydrate, dissolve them in 40mL of absolute ethanol solution, stir until the solution is clear and transparent, add 0.2962 g of thioacetamide was continuously stirred for 30 minutes, then transferred into a high-pressure reactor, reacted at 160 degrees Celsius for 12 hours, cooled, washed and dried.

[0027] (2) Synthesis of symmetrical indole squaraine dyes: Weigh 0.145g N-2,3,3-trimethylindole and 0.052g squaraine into a three-necked flask, add 20mL n-butanol and 60mL Mix the solvent with toluene, connect the condenser tube and the Stokes trap, and heat to reflux at 115°C for 12h. After the reaction, it was cooled to room temperature, vacuum-filtered and dried, and then separated and purified by column chromatography.

[0028] (3) Preparation of indium tin sulfide / squarine composite photocatalyst: Weigh 0.1g of indium tin sulfide in 30mL of abs...

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Abstract

The invention relates to a preparation method of a tin indium sulfide / squaraine composite visible light catalyst. The preparation method comprises the following steps: preparing tin indium sulfide, synthesizing indole squaraine dyestuff and preparing the tin indium sulfide / squaraine composite visible light catalyst. The preparation method provided by the invention has the beneficial effects that the preparation method is relatively simple and preparation conditions are easy to control; the prepared tin indium sulfide / squaraine composite visible light catalyst is a green, environment-friendly and high-performance catalyst, has no pollution and has high catalysis efficiency and certain application value.

Description

technical field [0001] The invention belongs to the technical field of photocatalysis, and relates to a preparation method of an indium tin sulfide / squarine compound visible light catalyst. Background technique [0002] Indium tin sulfide is a recently reported ternary sulfide semiconductor with visible photocatalytic properties, with a band gap of 1.81eV, a valence band potential of 1.60eV, and a conduction band potential of -0.21eV. Due to its narrow band gap, indium tin sulfide has strong absorption in the visible light region, and is a new type of photocatalytic material with broad development space. However, photogenerated electron-hole pairs are easy to recombine. In order to solve the common problem of semiconductor materials, we sensitized indium tin sulfide with squaraine dyes to further enhance its light absorption in the visible light region and improve photocatalytic activity. [0003] As a special organic functional dye, squarylium dye has a strong absorption p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/26B01J37/34C02F1/30C02F101/38
CPCC02F1/30B01J31/26B01J37/343C02F2101/308C02F2305/10B01J35/30B01J35/39
Inventor 李忠玉陆敏张雨哲徐松
Owner CHANGZHOU UNIV
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