Indium sulfide photocatalyst with hierarchical structures and preparation method thereof

A hierarchical structure, photocatalyst technology, applied in physical/chemical process catalysts, chemical instruments and methods, inorganic chemistry, etc., can solve the problems of sulphur consumption, large environmental pollution, high cost, reduce pollution, and simple experimental methods. , the effect of improving utilization

Active Publication Date: 2015-05-06
SHANDONG YUHUANG NEW ENERGY TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in the conventional method of synthesizing hierarchical structure indium sulfide light, it is often necessary to add acid and base to adjust the pH value of the reaction system, which causes great pollution to the environment, or consumes expensive sulfur source, and the cost is high. Therefore, a simple and cheap method is explored to prepare small-sized Hierarchical indium sulfide photocatalytic materials will be a worthwhile work

Method used

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  • Indium sulfide photocatalyst with hierarchical structures and preparation method thereof
  • Indium sulfide photocatalyst with hierarchical structures and preparation method thereof
  • Indium sulfide photocatalyst with hierarchical structures and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Weigh 0.2 g InNO 3 ·4.5H 2 Dissolve O in 30 mL of deionized water, stir magnetically until all of it is dissolved, and obtain a clear and transparent solution; press S to the above solution 2- : In 3+ Add 0.197 g thioacetamide (CH 3 CSNH 2 ), continue magnetic stirring until it dissolves, at which time the solution becomes light yellow; then add 0.15 g of polystyrene sulfonate (PSS) as a surfactant to the above solution, stir for a while until it dissolves; transfer the above mixed solution to water Then put the hydrothermal kettle in an oven and heat it at a constant temperature of 150°C for 20 hours. After the thermostatic reaction is over, take out the hydrothermal kettle, cool to room temperature and discard the supernatant, and collect the precipitate; Wash the precipitate 2-3 times with deionized water and absolute ethanol to remove impurities in the precipitate; dry the washed precipitate at a constant temperature of 60°C for 10 h to obtain an orange indium sulfide ...

Embodiment 2

[0030] Weigh 0.2 g InNO 3 ·4.5H 2 Dissolve O in 30 mL of deionized water, stir magnetically until all of it is dissolved, and obtain a clear and transparent solution; press S to the above solution 2- : In 3+ Add 0.197 g thioacetamide (CH 3 CSNH 2 ), continue magnetic stirring until it dissolves, at which time the solution becomes light yellow; then add 0.15 g of polystyrene sulfonate (PSS) as a surfactant to the above solution, stir for a while until it dissolves; transfer the above mixed solution to water Then put the hydrothermal kettle in an oven and heat it at a constant temperature of 150°C for 12 h. After the thermostatic reaction is over, take out the hydrothermal kettle, cool to room temperature, discard the supernatant, and collect the precipitate; Wash with deionized water and absolute ethanol for 2-3 times respectively to remove impurities in the precipitate; dry the washed precipitate at a constant temperature of 60°C for 10 h to obtain yellow In 2 S 3 powder.

[0031]...

Embodiment 3

[0033] Weigh 0.2 g InNO 3 ·4.5H 2 Dissolve O in 30 mL of deionized water, stir magnetically until all of it is dissolved, and obtain a clear and transparent solution; press S to the above solution 2- : In 3+ Add 0.197 g thioacetamide (CH 3 CSNH 2 ), continue magnetic stirring until it dissolves, at which time the solution becomes light yellow; then add 0.15 g of polystyrene sulfonate (PSS) as a surfactant to the above solution, stir for a while until it dissolves; transfer the above mixed solution to water Then put the hydrothermal kettle in an oven and heat it at a constant temperature of 120°C for 20 hours. After the thermostatic reaction is over, take out the hydrothermal kettle. After cooling to room temperature, discard the supernatant and collect the precipitate; Wash with deionized water and absolute ethanol for 2-3 times respectively to remove impurities in the precipitate; dry the washed precipitate at a constant temperature of 60°C for 10 h to obtain yellow In 2 S 3 pow...

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Abstract

The invention particularly relates to an indium sulfide photocatalyst with hierarchical structures and a preparation method thereof. The cubic-phase beta-In2S3 catalytic material can be prepared by a simple hydrothermal method and adopting polystyrene sodium sulfonate (PSS) as a special surfactant. Experimental conditions are easy to reach, no acid or base needs to be added to adjust the pH of the reaction solution so that the environmental pollution is reduced; the synthesized material is small in size and uniform in particle size which is between 100nm and 200nm and the specific surface area between 70m<2>/g and 82m<2>/g and the adsorption of pollutants molecules during the catalytic reaction is facilitated; by regulating and controlling the structure of PSS, the In2S3 material has the special hierarchical structures formed by assembling nanosheets; due to the morphologic characteristic, the In2S3 material has larger specific surface area and more active sites are generated; by the staggered nanosheets, light can be reflected for many times among the structures of the catalyst and thus the utilization rate of light is increased; and when 2,4-dichlorophenol is subjected to photocatalytic degradation for 80 minutes by the nanomaterial, the degradation rate can reach 91%.

Description

(1) Technical field [0001] The invention belongs to the technical field of photocatalyst preparation, and specifically relates to a hierarchical structure indium sulfide photocatalyst and a preparation method thereof. (2) Background technology [0002] Due to the continuous improvement of people's requirements for environmental quality and the development of existing environmental protection technologies, highly active photocatalytic materials have attracted much attention because of their important applications in sewage treatment and air purification. In recent years, domestic and foreign scholars have researched and developed a series of photoactive semiconductor materials, which are used in solar catalysis research. However, most photocatalytic materials only respond in the ultraviolet range, and ultraviolet light only accounts for 5% of the total energy of sunlight, while visible light energy accounts for about 43%. Therefore, the design and preparation of efficient and sta...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/04C01G15/00
Inventor 周娟董鑫董文明赵成龙王瑛王胜伟
Owner SHANDONG YUHUANG NEW ENERGY TECH
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