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

• Type: Article in International Scientific Journal
• Date: 2006

Authors

Boev, VI (Author) Other; Soloviev, A (Author) Other; Rodriguez Gonzalez, B (Author) Other; Silva, CJR (Author) Other; Gomes, MJM (Author) Other

Journal

Title: Materials Letters

Vol. 60

Pages: 3793-3796

ISSN: 0167-577X

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 15 Citations

Scopus - 15 Citations

Other information

Authenticus ID: P-004-FWK

DOI: 10.1016/j.matlet.2006.03.116

Abstract (EN): 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.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 4