A kind of indium zinc sulfide/black phosphorus quantum dot and its preparation method and application

A technology of sulfur indium zinc and quantum dots, which is applied in chemical instruments and methods, chemical/physical processes, physical/chemical process catalysts, etc., can solve the problems of fast recombination of photogenerated electrons and holes, affecting the efficiency of photocatalytic water splitting, etc., to achieve Improved electron-hole separation efficiency, excellent photocatalytic water splitting performance, and improved stability

Active Publication Date: 2021-12-24
SOUTH CHINA NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to overcome the defect that photogenerated electron-hole recombination is fast in the sulfur indium zinc photocatalyst in the prior art, which affects the efficiency of photocatalytic water splitting, and to provide a preparation method of sulfur indium zinc / black phosphorus quantum dots

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  • A kind of indium zinc sulfide/black phosphorus quantum dot and its preparation method and application
  • A kind of indium zinc sulfide/black phosphorus quantum dot and its preparation method and application
  • A kind of indium zinc sulfide/black phosphorus quantum dot and its preparation method and application

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Embodiment 1

[0035] A sulfur indium zinc / black phosphorus quantum dot photocatalyst for photocatalytic water splitting, the preparation method of which is as follows.

[0036] 1. Preparation of sulfur indium zinc: 1.0mmol zinc chloride, 2.0mmol indium chloride and 6.0mmol thioacetamide (TAA) were dissolved in 80mL deionized water, and added to a 150mL polytetrafluoroethylene reactor at 80°C for water Heat for 12 hours, cool to room temperature, centrifuge, wash and dry to obtain sulfur indium zinc powder;

[0037] 2. Compound sulfur indium zinc and black phosphorus quantum dots: disperse 0.2 g of sulfur indium zinc obtained in step 1 in 20 mL of DMF, add 2 mL of 0.2 mg / mL black phosphorus quantum dot DMF dispersion, and stir overnight; black phosphorus The DMF dispersion of quantum dots was prepared by the following method: 10 mg of black phosphorus crystals were added to 10 mL of DMF, and a cell pulverizer was used to sonicate for 6 hours in an ice bath to obtain a dispersion; the dispers...

Embodiment 2

[0041] A sulfur indium zinc / black phosphorus quantum dot photocatalyst for photocatalytic water splitting, the preparation method of which is as follows.

[0042] 1. Preparation of sulfur indium zinc: 1.0mmol zinc chloride, 2.0mmol indium chloride and 6.0mmol thioacetamide (TAA) were dissolved in 80mL deionized water, and added to a 150mL polytetrafluoroethylene reactor at 80°C for water Heat for 14 hours, cool to room temperature, centrifuge, wash and dry to obtain sulfur indium zinc powder.

[0043] 2. Compound sulfur indium zinc and black phosphorus quantum dots: disperse 0.2g sulfur indium zinc obtained in step 1 in 20mL DMF, add 2mL0.2mg / mL black phosphorus quantum dot DMF dispersion, and stir overnight;

[0044] 3. Centrifuge the solution obtained in step 2 to obtain the precipitate, wash it several times with ethanol, and then dry it in a vacuum oven at 40°C overnight;

[0045] 4. Grinding the solid obtained in step 3 to obtain sample powder.

Embodiment 3

[0047] A sulfur indium zinc / black phosphorus quantum dot photocatalyst for photocatalytic water splitting, the preparation method of which is as follows.

[0048] 1. Preparation of sulfur indium zinc: 1.0mmol zinc chloride, 2.0mmol indium chloride and 6.0mmol thioacetamide (TAA) were dissolved in 80mL deionized water, and added to a 150mL polytetrafluoroethylene reactor at 100°C for water Heat for 12 hours, cool to room temperature, centrifuge, wash and dry to obtain sulfur indium zinc powder;

[0049] 2. Compound sulfur indium zinc and black phosphorus quantum dots: disperse 0.2g sulfur indium zinc obtained in step 1 in 20mL DMF, add 2mL0.2mg / mL black phosphorus quantum dot DMF dispersion, and stir overnight;

[0050] 3. Centrifuge the solution obtained in step 2 to obtain the precipitate, wash it several times with ethanol, and then dry it in a vacuum oven at 40°C overnight;

[0051] 4. Grinding the solid obtained in step 3 to obtain sample powder.

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Abstract

The invention relates to a sulfur indium zinc / black phosphorus quantum dot and its preparation method and application. The preparation method comprises the steps of: ultrasonically dispersing sulfur indium zinc in an organic solvent, adding black phosphorus quantum dot organic solvent dispersion, stirring, centrifuging, washing, drying, and grinding to obtain the sulfur indium zinc / black phosphorus quantum dots ; The mass ratio of the black phosphorus quantum dots to the sulfur indium zinc is 1-4:1000. The present invention combines black phosphorus quantum dots with sulfur indium zinc for the first time to obtain a new type of photocatalyst, which greatly improves the stability of sulfur indium zinc / black phosphorus quantum dots, improves the electron-hole separation efficiency in the photocatalyst, and improves the current carrying capacity. The ion transport rate, thus achieving excellent photocatalytic water splitting performance.

Description

technical field [0001] The invention belongs to the technical field of photocatalytic water splitting materials, and in particular relates to a sulfur indium zinc / black phosphorus quantum dot and its preparation method and application. Background technique [0002] At present, as the problems of environmental pollution and energy shortage are becoming more and more prominent, how to deal with and solve these two problems has become a top priority for achieving sustainable development. As the use of traditional energy will have a greater impact on the environment, the use of green and clean energy to replace today's fossil energy has become one of the trends in future energy development. Hydrogen energy is considered to be the most ideal clean energy due to its clean and pollution-free, high energy utilization rate, and wide range of sources. At present, the main methods of hydrogen production are fossil fuel hydrogen production and electrolysis of water to produce hydrogen....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/14C01B3/04
CPCY02E60/36
Inventor 王新潘笑盈陈志鸿马歌黄兰艳
Owner SOUTH CHINA NORMAL UNIVERSITY
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