1CdS, CdSe or CdTe hollow Nano ring, and preparation method

A hollow nano- and nano-ring technology, applied in the fields of nanostructure manufacturing, nanotechnology, nanotechnology, etc., to achieve the effects of easy availability of raw materials, simple raw materials and mild conditions

Inactive Publication Date: 2007-10-10
NANJING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition to a small number of reports on the construction of CdS nanorings by self-assembly [see: B.Li

Method used

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  • 1CdS, CdSe or CdTe hollow Nano ring, and preparation method
  • 1CdS, CdSe or CdTe hollow Nano ring, and preparation method
  • 1CdS, CdSe or CdTe hollow Nano ring, and preparation method

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Embodiment 1

[0014] The preparation of embodiment 1.CdTe hollow nano ring

[0015] 1.5mmol Cd(OH) 2 Add nanorings to 30ml aqueous solution containing 1.5mmol NaHTe, stir and react for 20 minutes under nitrogen protection, centrifuge the product, wash the precipitate with distilled water and ethanol in sequence, and then dry the obtained precipitate in an oven at 60°C . The XRD measurement results (see accompanying drawing 1a) show that the product is pure cubic phase CdTe, and no heterophase peaks are found, indicating that the product has a relatively high purity. Through the TEM photo (accompanying drawing 1b), it is observed that the CdTe ring product has a hexagonal shape, an outer diameter of 200-260 nanometers, an inner diameter of 50-70 nanometers, and a hollow structure inside the ring body. The scanning electron microscope illustration in the accompanying drawing b can be clearly seen The see interior is hollow.

Embodiment 2

[0016] The preparation of embodiment 2.CdTe hollow nano rings

[0017] Cd(OH) 2 The amount of nanorings and NaHTe was changed to 6 mmol, the volume of the aqueous solution was 30 ml, and the other preparation conditions were the same as in Example 1. A product similar in crystal structure and morphology to Example 1 was obtained.

Embodiment 3

[0018] The preparation of embodiment 3.CdTe hollow nano rings

[0019] The reaction time was changed to 30 minutes, and other conditions of preparation were the same as in Example 1. A product similar in crystal structure and morphology to Example 1 was obtained.

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Abstract

This invention discloses hollow CdS, CdSe or CdTe nanoring, which has hexagonal structure. The outer diagonal length is 200-260 nm, and the inner diagonal length is 50-70 nm. The hollow CdS or CdSe nanoring has a hexagonal phase, while the hollow CdTe nanoring has a cubic phase. The CdS, CdSe or CdTe nanoring can be used to fabricate biosensors or microelectronics. This invention also discloses a method for preparing hollow CdS, CdSe or CdTe nanoring.

Description

technical field [0001] The invention relates to a CdS, CdSe or CdTe hollow nano ring and a preparation method thereof. Its preparation method is to use Cd(OH) 2 CdS, CdSe or CdTe hollow nanorings were prepared by conversion method. Background technique [0002] In recent years, ring-shaped nanostructures have aroused widespread interest of scientists. It has very novel physical and chemical properties. For example, magnetic nano-rings can maintain a stable eddy current state, which can be used in high-density magnetic random access memory [see: J.G.Zhu , Y.F.Zheng, G.A.Prinz, J.Appl.Phys.2000, 87, 6668], gold nanorings exhibit enhanced localized electromagnetic fields within their rings [Ref: J.Aizpurua, P.Hanarp, D.S.Sutherland, et al .Phys.Rev.Lett.2003, 90, 57401], and the superconducting phenomenon in nano-metal rings has also been studied [see: E.M.Q.Jariwala, P.Mohanty, M.B.Ketchen, et al.Phys.Rev.Lett. 2001, 86, 1594]. Chalcogenides of cadmium are an important cla...

Claims

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Application Information

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IPC IPC(8): C01G11/02C01G19/04C01G11/00B82B3/00
Inventor 朱俊杰缪建军姜立萍
Owner NANJING UNIV
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