Facile synthesis of L-Cysteine CdTe core shell system and its antioxidants properties

7^th Annual Congress on Materials Research and Technology

February 20-21, 2017 Berlin, Germany

Daramola A Olamide

MSc, Department of Chemistry, Walter Sisulu University, South Africa

Posters & Accepted Abstracts: J Material Sci Eng

Abstract :

L-Cysteine CdTe core and CdTe/CdSe core-shell were successfully synthesized in an aqueous solution medium. The synthesized QDs were analysed using UV-vis absorption spectroscopy and florescence spectroscopy, transmission electron microscope (TEM), Fourier transform infra-red spectra (FT-IR) and X-ray powder diffraction (XRD). Systematic investigations were carried out for the determination of optimal condition namely: reaction times, pH and mole ratios. Compared to CdTe core (529nm), the core shell (601nm) demonstrate a drastic shift in wavelength to the red region proving that as extra material had been deposited unto the surface of the core. The 20, 40 and 60 days stability tests conducted proved that core-shell nanoparticles were quite stable compared to the core material. Investigation was also conducted on the total anti-oxidant capacity (TAC) and lipid peroxidation with the use of six (8) Swiss albino mice and this was done using ferric reducing antioxidant power (FRAP) and TBARS was used to malondi-aldehyde (MDA) concentration. It was discovered that the core-shell demonstrated a poor anti-oxidant property at the heart, spleen, kidney, and brain except at the liver where good anti-oxidant property was demonstrated after 24 and 72 hours of exposure. The result at the testis was not significant as against the control. Since this reaction did not involve the use of a nitrogen atmosphere nor special Ligand or buffer solutions, it suggests that the process could be easily operated on an industrial scale

Biography :

Email: truelamm@yahoo.com