Optical Characterization of CdS Quantum Dots Nanoparticles Dispersed in Clays

• Type: Article in International Scientific Journal
• Date: 2012

Authors

Manuel Algarra (Author) Other; Ana Reis (Author) Other; Iulius Bobos (Author) FCUP; Bruno B Campos (Author) Other; Jose Jimenez Jimenez (Author) Other; Ramon Moreno Tost (Author) Other; Joaquim C G E Esteves da Silva (Author) FCUP

Journal

Title: Journal of Dispersion Science and Technology

Vol. 33

Pages: 1139-1143

ISSN: 0193-2691

Publisher: Taylor & Francis

Indexing

ISI Web of Knowledge - 1 Citation

Scopus - 1 Citation

Scientific classification

FOS: Natural sciences > Chemical sciences

Other information

Authenticus ID: P-002-FPS

DOI: 10.1080/01932691.2011.599238

Abstract (EN): Synthesis, characterization, and the optical behavior of CdS quantum dots nanoparticles were studied confined in clays. An alternative synthesis approach in different natural clays K-10 bentonite, Na-montemorillonite, halloysite, and saponite was carried out. The composite materials were characterized by XRD and FTIR spectroscopy, energy dispersive, scanning, and transmission electron microscopy. After CdS-QDs formation, the synthesized materials became fluorescent with emission wavelengths (average and standard deviation of the maximum wavelength; full width of half maximum): K-10 bentonite-CdS (590 +/- 5 nm; 183 nm); Na-montmorillonite-CdS (550 +/- 3 nm; 219 nm); saponite-CdS (550 +/- 5 nm; 219 nm), and halloysite-CdS (590 +/- 8 nm; 185 nm). (Supplemental materials are available for this article. Go to the publisher's online edition of the Journal of Dispersion Science and Technology to view the free supplemental file.)

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 5