Speaker
Ms
Sinovuyo Makinana
(1Fort Hare Institute of Technology (FHIT), University of Fort Hare, Private Bag X1314, Alice, 5700, Republic of South Africa. 2Chemistry department, University of Fort Hare, Private Bag X1314, Alice, 5700, Republic of South Africa)
Description
CdSe quantum dots (QDs) with different particle sizes were successfully synthesized using the hot-injection method. The CdSe QDS were synthesized by reacting cadmium acetate dihydrate [Cd (CH3COO) 2∙2H2O] and selenium (Se) powder in the presence of 2-mercaptoethanol as the capping agent. CdSe QDs of different crystallite sizes were prepared at different reaction temperatures of 150ºC to 175ºC, 200ºC, 225ºC, 250ºC, 275ºC and 300ºC.The morphological, structural and optical properties of the as synthesized CdSe QDs were evaluated using SEM, XRD, HRTEM, and UV-Vis spectroscopy. From the UV-Vis, it was found that the crystallite size of CdSe QDs increases with the increase in reaction temperatures. The Kippeny method was used to calculate the crystallite size of CdSe QDs and it was found to be in the range of 0.82 – 2.46 nm. Furthermore, the data analysis has revealed that CdSe QDs crystallite size is dependent upon the reaction temperature.
Level for award<br> (Hons, MSc, <br> PhD, N/A)?
MSc
Apply to be<br> considered for a student <br> award (Yes / No)?
yes
Would you like to <br> submit a short paper <br> for the Conference <br> Proceedings (Yes / No)?
Yes
Main supervisor (name and email)<br>and his / her institution
Prof. Edson Meyer
EMeyer@ufh.ac.za
Fort Hare Institute of Technology
University of Fort Hare
Primary author
Ms
Sinovuyo Makinana
(1Fort Hare Institute of Technology (FHIT), University of Fort Hare, Private Bag X1314, Alice, 5700, Republic of South Africa. 2Chemistry department, University of Fort Hare, Private Bag X1314, Alice, 5700, Republic of South Africa)
Co-authors
Prof.
Edson Meyer
(1Fort Hare Institute of Technology (FHIT), University of Fort Hare, Private Bag X1314, Alice, 5700, Republic of South Africa. 2Chemistry department, University of Fort Hare, Private Bag X1314, Alice, 5700, Republic of South Africa)
Dr
Raymond Taziwa
(1Fort Hare Institute of Technology (FHIT), University of Fort Hare, Private Bag X1314, Alice, 5700, Republic of South Africa. 2Chemistry department, University of Fort Hare, Private Bag X1314, Alice, 5700, Republic of South Africa)
