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“ One pot preparation of cadmium sulfide quantum dots doped silica nanomaterials and its properties

Y. L. LI1,2,* , Z. C. XU2, J. J. WANG1

Affiliation

  1. Department of Science, Tianjin University of Science Technology, Tianjin, 300457, P.R. China
  2. Department of physics, Nankai University, Tianjin, 300071, P.R. China

Abstract

A simple approach for the synthesis of large quantities of CdS quantum dots doped silica nanomaterials was developed via sol-gel process at room temperature. 3-Mercaptopropyltrimethoxysilane was used as a cadmium chelator, and cadmium acetate as cadmium source and sodium sulphide as sulphur precursor during the preparation process. The effect of preparation conditions on properties of synthesized materials was discussed in detail. The prepared CdS quantum dots doped silica particles were characterized using techniques such as scanning electron microscope (SEM), fluorescence spectroscopy, and UV–VIS absorption spectroscopy, respectively. The absorption peak is shifted towards shorter wavelengths compared with the bulk CdS. The synthesized quantum dots doped silica nanoparticles exhibited strong emission..

Keywords

Quantum dots, Sol-gel, Silica, CdS quantum dots, Hybrid material.

Submitted at: March 5, 2013
Accepted at: March 13, 2014

Citation

Y. L. LI, Z. C. XU, J. J. WANG, “ One pot preparation of cadmium sulfide quantum dots doped silica nanomaterials and its properties, Journal of Optoelectronics and Advanced Materials Vol. 16, Iss. 3-4, pp. 257-262 (2014)