Formation of US nanoparticles by gas-diffusion method in sol-gel derived ureasilicate matrix

被引：16

作者：

Boev, V. I. ^{[1
]}

Soloviev, A.

Rodriguez-Gonzalez, B.

Silva, C. J. R.

Gomes, M. J. M.

机构：

[1] Univ Minho, Ctr Fis, P-4710057 Braga, Portugal

[2] Univ Minho, Dept Quim, P-4710057 Braga, Portugal

[3] Univ Vigo, CACTI, ES-36200 Vigo, Spain

来源：

MATERIALS LETTERS | 2006年 / 60卷 / 29-30期

关键词：

CdS; nanomaterials; sol-gel preparation; ureasilicate; gas-diffusion method;

D O I：

10.1016/j.matlet.2006.03.116

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

CdS nanoparticles (NPs) were prepared by exposing a hybrid ureasilicate gel containing cadmium (II) ions to H2S gas at room temperature. Additional component (tetraethoxysilane) was introduced during the synthesis in order to improve the mechanical properties of the host matrix. The obtained material was subsequently subjected to an annealing treatment under an argon atmosphere at temperatures that varied from 43 to 102 degrees C. The size of the embedded NPs increased with thermal annealing. The optical absorption spectroscopy, photolummescence (PL) and transmission electron microscopy (TEM) measurements confirmed the formation of US nanoparticles (NPs) exhibiting quantum confinement effect. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：3793 / 3796

页数：4

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