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Liquid state preparation method for nano cadmium sulfide hollow sphere

A technology of cadmium sulfide and hollow spheres, which is applied in the direction of cadmium sulfide, etc., can solve the problems of many influencing factors of the reaction system, limit the wide application, and long production cycle, and achieve the effect of easy-to-obtain raw materials, good process repeatability, and easy control

Inactive Publication Date: 2007-10-24
ANHUI UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These methods have some disadvantages. The former needs to use the template and remove the template after the reaction, and the preparation cycle is longer; the latter involves a more complex liquid phase system with multiple components. There are many influencing factors in the reaction system and the operation is inconvenient.
Some new preparation methods, such as coaxial nozzle technology [10R.Meyer, H.Weitzing, Q.Xu, Q.Zhang, R.E.Newnham, J.K.Cochran, J.Am.Ceram.Soc.1994, 77, 1669.1672.], Ultrasonic methods, etc. require special instruments and equipment, which limits their wide application

Method used

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  • Liquid state preparation method for nano cadmium sulfide hollow sphere
  • Liquid state preparation method for nano cadmium sulfide hollow sphere
  • Liquid state preparation method for nano cadmium sulfide hollow sphere

Examples

Experimental program
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Effect test

Embodiment 1

[0026] Weigh 5mmol of CdCl 2 2.5H 2 O solid was placed in a 60ml wide-mouth bottle, 30ml of distilled water was added and stirred to obtain a clear and transparent colorless solution, which was then heated in a water bath at 80°C. In addition, 6.5 mmol of sublimed sulfur was weighed and dissolved in 5-10 ml of ethylenediamine, and after all the dissolution, a dark red solution was obtained. Add sulfur powder dissolved in ethylenediamine solution to CdCl 2 In the aqueous solution, after continuing to stir for 8 hours, the mixed solution was separated by suction filtration, washed with water and ethanol, and dried in vacuo to obtain a yellow powder. The product was identified as cadmium sulfide by X-ray powder diffraction (accompanying drawing 1), and was identified as nanoscale cadmium sulfide hollow spheres by transmission electron microscopy (accompanying drawing 2). The diameter of the hollow sphere is 80-150 nanometers, and the diameter of the spherical shell is about 10...

Embodiment 2

[0029] Weigh 5mmol of CdCl 2 2.5H 2 O solid is placed in the reactor of 60ml, adds 30ml distilled water, stirs, and obtains clear and transparent colorless solution. In addition, 6.5 mmol of sublimed sulfur was weighed and dissolved in 10 ml of ethylenediamine, and a dark red solution was obtained after all the dissolution. Add sulfur powder dissolved in ethylenediamine solution to CdCl 2 In the aqueous solution, continue stirring for 30 minutes, seal the reaction vessel, react at 120°C for 10 hours, then cool to room temperature, open the reaction vessel, separate the reaction solution by suction filtration, wash with water and ethanol, and obtain a yellow powder after vacuum drying. Product is identified as cadmium sulfide (accompanying drawing 3) through X-ray powder diffraction, is identified as nanoscale cadmium sulfide hollow spheres by scanning electron microscope (accompanying drawing 3) and transmission electron microscope (accompanying drawing 4), and the diameter ...

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Abstract

The invention discloses a making method of liquid phase nanometer cadmium sulfide hollow ball, which is characterized by the following: adopting inorganic cadmium salt compound and monomer sulfur powder in the soluble liquid system as raw material; blending cadmium source solution and sulfur source solution directly or placing in the seal reactor to heat under certain temperature; synthesizing the product within one step; avoiding silica or small macromolecular ball or surface activator as mould; simplifying equipment and operation with cheap raw material; fitting for marking biology; possessing potential value in the nanometer material synthetic or other relative scientific domains.

Description

technical field [0001] The invention relates to a liquid phase preparation method of nano cadmium sulfide hollow spheres. Background technique [0002] Cadmium sulfide (CdS) is an important class of direct bandgap semiconductor materials with special optical and electrical properties, and has been widely used in various light-emitting devices, optical detection devices, and photosensitive sensors. Cadmium sulfide semiconductor nanomaterials exhibit some specific properties different from those of bulk materials, such as significantly enhanced light absorption and fluorescence emission, and fast optical third-order nonlinear response, and are expected to become materials for manufacturing new-generation solid-state electronic and optoelectronic devices. Cadmium sulfide nano-semiconductor materials have strong fluorescence properties and can be used as fluorescent markers in biology. [0003] Hollow spheres composed of semiconductor nanoparticles have the characteristics of l...

Claims

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Application Information

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IPC IPC(8): C01G11/02
Inventor 李村吴振玉徐洪耀
Owner ANHUI UNIVERSITY
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