Open AccessSynthesis and Characterization of Cysteine-Capped CdSe Nanoparticles Using an Alternative of Selenium
Author(s) -
Kopano Edward Mokubung,
Makwena J. Moloto,
Kalenga P. Mubiayi,
Nosipho Moloto
Publication year - 2019
Publication title -
asian journal of chemistry/asian journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.145
H-Index - 34
eISSN - 0975-427X
pISSN - 0970-7077
DOI - 10.14233/ajchem.2019.22055
Subject(s) - photoluminescence , selenium , chemistry , nanoparticle , transmission electron microscopy , fourier transform infrared spectroscopy , cadmium chloride , absorption spectroscopy , cadmium , absorption (acoustics) , nanomaterials , nuclear chemistry , cadmium selenide , spectroscopy , aqueous solution , analytical chemistry (journal) , chemical engineering , nanotechnology , quantum dot , materials science , organic chemistry , optics , optoelectronics , physics , quantum mechanics , engineering , composite material
Present work reports synthesis of L-cysteine capped CdSe nanoparticles at different temperatures via an aqueous medium, non-toxic and green colloidal route. Cadmium chloride (CdCl2·5H2O) and sodium selenite (Na2SeO3) were used as cadmium and selenium sources respectively. The prepared nanoparticles are characterized by UV-visible absorption and photoluminescence spectroscopy, Fourier transform infrared, X-ray diffraction and transmission electron microscopy. The XRD patterns confirm a cubic phase structure of the prepared nanoparticles at 55, 75 and 95 ºC, respectively. The TEM analysis, optical absorption and photoluminescence spectra shows epitaxial growth of CdSe nanoparticles as the temperature increases with average size diameter of 4.12 ± 0.32, 5.02 ± 0.234 and 5.53 ± 0.321 nm for 55, 75 and 95 ºC, respectively.