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
Contact:
magonzal@fc.up.pt
No. of pages:
5