Preparation method for cadmium sulfide quantum dot/carbon nanotube photocatalyst taking polyvinylpyrrolidone as dispersant

A technology of polyvinylpyrrolidone and carbon nanotubes, which is applied in the field of preparation of cadmium sulfide quantum dots/carbon nanotube photocatalysts, can solve problems affecting practical applications, complex synthesis methods, etc., and achieves easy control of preparation conditions, simple preparation methods, The effect of high catalytic efficiency

Active Publication Date: 2015-11-04
CHANGZHOU UNIV
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  • Application Information

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Problems solved by technology

However, the introduction of these potentially toxic stabilizers and complex synthesis methods have seriously affected their practical applications.

Method used

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  • Preparation method for cadmium sulfide quantum dot/carbon nanotube photocatalyst taking polyvinylpyrrolidone as dispersant
  • Preparation method for cadmium sulfide quantum dot/carbon nanotube photocatalyst taking polyvinylpyrrolidone as dispersant
  • Preparation method for cadmium sulfide quantum dot/carbon nanotube photocatalyst taking polyvinylpyrrolidone as dispersant

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Embodiment 1

[0019] (1) Pretreatment of carbon nanotubes

[0020] Put the multi-walled carbon nanotubes in a three-neck flask, add 100ml of concentrated nitric acid with a concentration of 65%, heat and stir at 115°C for 8.5h under reflux, after cooling, wash with water until neutral, filter and dry for later use.

[0021] (2) Preparation of cadmium sulfide quantum dot / carbon nanotube composite photocatalyst

[0022] Place 0.1 g of multi-walled carbon nanotubes prepared in (1) in a 100 ml beaker, add 65 ml of ethylene glycol, weigh 0.0302 g of cadmium acetate, 0.0151 g of thioacetamide and 0.0301 g of polyvinylpyrrolidone and add them to the beaker , ultrasonically stirred for 1.5h, and then transferred the above solution to a 200ml hydrothermal reaction kettle, reacted at 120°C for 24h, cooled, filtered with suction, washed with ethanol and water successively, and dried to obtain the product.

Embodiment 2

[0024] (1) Pretreatment of carbon nanotubes

[0025] Put the multi-walled carbon nanotubes in a three-necked flask, add 150ml of concentrated nitric acid with a concentration of 65%, heat and stir at 125°C for 9.5h under reflux, after cooling, wash with water until neutral, filter and dry for later use.

[0026] (2) Preparation of cadmium sulfide quantum dot / carbon nanotube composite photocatalyst

[0027] Place 0.1g of multi-walled carbon nanotubes prepared in (1) in a 100ml beaker, add 75ml of ethylene glycol, weigh 0.05g of cadmium acetate, 0.02g of thioacetamide and 0.025g of polyvinylpyrrolidone and add them to the beaker , ultrasonically stirred for 1 hour, and then transferred the above solution to a 200ml hydrothermal reaction kettle, reacted at 80°C for 20 hours, cooled, filtered with suction, washed with ethanol and water successively, and dried to obtain the product.

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Abstract

The invention relates to a preparation method for a cadmium sulfide quantum dot/carbon nanotube photocatalyst taking polyvinylpyrrolidone as a dispersant. The preparation method comprises: pre-treatment of a carbon nanotube and preparation of a cadmium sulfide quantum dot/carbon nanotube composite photocatalyst . The preparation method provided by the invention has the benefits that the preparation method is relatively simple, the preparation conditions are easy to control, and the prepared cadmium sulfide quantum dot/carbon nanotube photocatalyst is a green and environmental-friendly high-performance catalyst which is free of pollution and high in catalytic efficiency, and has certain application value.

Description

technical field [0001] The invention belongs to the technical field of nanomaterial preparation and application, and relates to a method for preparing a cadmium sulfide quantum dot / carbon nanotube photocatalyst using polyvinylpyrrolidone as a dispersant. Background technique [0002] As a typical semiconductor material, CdS quantum dots exhibit high-efficiency catalytic activity in photocatalysis, and can adjust the energy band structure by changing the particle size and surface properties, so they have a very broad application in photocatalytic hydrogen production. application prospects. As an important semiconductor, cadmium sulfide (CdS) has a large band gap (2.42eV), and has been extensively studied in recent years. Due to its excellent optical properties, CdS quantum dots have shown broad application potential in many fields such as photoelectric conversion, light-emitting diodes, and photocatalytic degradation of organic pollutants. However, due to the extremely smal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/04B01J32/00B01J35/02B82Y30/00B82Y40/00A62D3/17A62D101/26
Inventor 李忠玉方姗姗孙蔓佑丛田田梁倩徐松
Owner CHANGZHOU UNIV
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