Preparation method of sea urchin-shaped cadmium sulfide nanospheres

A cadmium sulfide and nanosphere technology, applied in the direction of cadmium sulfide, nanotechnology, nanotechnology, etc., can solve the problems of complex cadmium sulfide process, difficult mass production, long preparation cycle, etc., and achieve short preparation cycle and high repeatability , the effect of simple process

Inactive Publication Date: 2014-11-05
WENZHOU UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a preparation method of sea urchin-shaped cadmium sulfide nanospheres, which solves the problems of complicated preparation process of cadmium sulfide, long preparation cycle, high cost and difficulty in large-scale production in the existing method

Method used

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  • Preparation method of sea urchin-shaped cadmium sulfide nanospheres
  • Preparation method of sea urchin-shaped cadmium sulfide nanospheres
  • Preparation method of sea urchin-shaped cadmium sulfide nanospheres

Examples

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Effect test

Embodiment 1

[0022] Weigh 0.05g (0.12mmol) of cadmium diethyldithiocarbamate into a flask, measure 48ml of ethylene glycol and 2ml of distilled water into the flask to make a mixed solution, and put the above flask into atmospheric pressure microwave-assisted synthesis / In the extraction reaction apparatus (the flask is equipped with a condenser and tap water), after heating at 90°C and 500W for 5 minutes under magnetic stirring (500 rpm), then heating at 160°C and 500W for 5 minutes, the reaction solution was centrifuged ( 8000rpm, 10min), the precipitate was washed with distilled water and absolute ethanol for 2-3 times in sequence, and then dried at 50°C for 1h to obtain 15mg of sea urchin-shaped cadmium sulfide nanospheres with a yield of 86.5%.

[0023] Scanning electron microscope (SEM) image of sea urchin-shaped cadmium sulfide nanospheres is shown in figure 1 As shown in A and B, it can be seen from A and B that the product has good monodispersity, uniform appearance, clean surfac...

Embodiment 2

[0025] Change the amount of ethylene glycol and pure water in Example 1 to: get 48ml ethylene glycol and 2ml distilled water and pour them into the flask respectively, then the magnetic stirring speed is 1000 rpm, and other operations are the same as in Example 1 to obtain sea urchin-shaped The cadmium sulfide nanosphere is 14 mg, the diameter of the ball is 130-160 nm, and there are a large number of flat-headed cylindrical spines distributed on the surface of the ball. The length of the spines is 20-40 nm, and the width is 10-20 nm.

Embodiment 3

[0027] The amount of cadmium diethyldithiocarbamate in Example 1 was changed to 0.1 g (0.24 mmol), and other operations were the same as in Embodiment 1. 30 mg of sea urchin-shaped cadmium sulfide nanospheres were obtained, with a diameter of 140-180 nm. There were a large number of flat-headed cylindrical spines distributed on the surface of the balls. The spines were 30-50 nm long and 15-25 nm wide.

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Abstract

The invention discloses a preparation method of sea urchin-shaped cadmium sulfide nanospheres. The preparation method comprises the following steps of mixing a single-source precursor, an organic alcohol and distilled water into a mixed solution, carrying out microwave heating of the mixed solution at a temperature of 80-100 DEG C for 3-7min with continuous stirring along the same direction, then carrying out microwave heating at a temperature of 150-165DEG C for 4-10min, washing the reaction solution orderly by distilled water and anhydrous ethanol, and carrying out drying to obtain the sea urchin-shaped cadmium sulfide nanospheres. The sea urchin-shaped cadmium sulfide nanospheres prepared by an ordinary pressure microwave method have high photocatalytic activity, and performances superior to performances of commercial cadmium sulfide, wherein after xenon lamp irradiation for 20min, the sea urchin-shaped cadmium sulfide nanospheres have a rhodamine B degradation rate of 75% and commercial cadmium sulfide has a rhodamine B degradation rate of 15%, and after xenon lamp irradiation for 140min, the sea urchin-shaped cadmium sulfide nanospheres have a rhodamine B degradation rate more than 95% and commercial cadmium sulfide has a rhodamine B degradation rate of 50%. The preparation method has simple processes, adopts the cheap raw materials stored easily, has a short preparation period and high repeatability, and is suitable for large-scale production.

Description

(1) Technical field [0001] The invention relates to the synthesis technology of inorganic nanometer materials and the field of II-VI group semiconductor nanometer materials, in particular to a preparation method of sea urchin-like cadmium sulfide nanospheres. (2) Background technology [0002] Cadmium sulfide is an important semiconductor material. Due to its superior properties, it has aroused the research interest of many scientists in recent years. Cadmium sulfide is a typical II-VI direct bandgap semiconductor material. The bandgap width of bulk cadmium sulfide is 2.42eV at room temperature, and the bandgap of nanoscale cadmium sulfide is greater than 2.45eV. Because of its special optical and electrical properties, it has been widely used in photoelectric conversion, photoluminescence, photocatalysis, magnetic materials, biological detection and so on. [0003] Most of the current research focuses on the size effect of nanoparticles. In fact, the physical and chemical ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G11/02B82Y40/00B82Y30/00
Inventor 王舜关雷金辉乐
Owner WENZHOU UNIV
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