ACS applied materials & interfaces, volume 4, issue 5, pages 2561-2569

One-Pot Noninjection Route to CdS Quantum Dots via Hydrothermal Synthesis

Publication typeJournal Article
Publication date2012-04-30
Quartile SCImago
Q1
Quartile WOS
Q1
Impact factor9.5
ISSN19448244, 19448252
General Materials Science
Abstract
Water-dispersible CdS quantum dots (QDs) emitting from 510 to 650 nm were synthesized in a simple one-pot noninjection hydrothermal route using cadmium chloride, thiourea, and 3-mercaptopropionic acid (MPA) as starting materials. All these chemicals were loaded at room temperature in a Teflon sealed tube and the reaction mixture heated at 100 °C. The effects of CdCl(2)/thiourea/MPA feed molar ratios, pH, and concentrations of precursors affecting the growth of the CdS QDs, was monitored via the temporal evolution of the optical properties of the CdS nanocrystals. High concentration of precursors and high MPA/Cd feed molar ratios were found to lead to an increase in the diameter of the resulting CdS nanocrystals and of the trap state emission of the dots. The combination of moderate pH value, low concentration of precursors and slow growth rate plays the crucial role in the good optical properties of the obtained CdS nanocrystals. The highest photoluminescence achieved for CdS@MPA QDs of average size 3.5 nm was 20%. As prepared colloids show rather narrow particle size distribution, although all reactants were mixed at room temperature. CdS@MPA QDs were characterized by UV-vis and photoluminescence spectroscopy, powder X-ray diffraction, transmission electron microscopy, energy-dispersive X-ray spectrometry and MALDI TOF mass spectrometry. This noninjection one-pot approach features easy handling and large-scale production with excellent synthetic reproducibility. Surface passivation of CdS@MPA cores by a wider bandgap material, ZnS, led to enhanced luminescence intensity. CdS@MPA and CdS/ZnS@MPA QDs exhibit high photochemical stability and hold a good potential to be applied in optoelectronic devices and biological applications.

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Aboulaich A. et al. One-Pot Noninjection Route to CdS Quantum Dots via Hydrothermal Synthesis // ACS applied materials & interfaces. 2012. Vol. 4. No. 5. pp. 2561-2569.
GOST all authors (up to 50) Copy
Aboulaich A., Billaud D., Abyan M., Balan L., Gaumet J., Medjadhi G., Ghanbaja J., Schneider R. One-Pot Noninjection Route to CdS Quantum Dots via Hydrothermal Synthesis // ACS applied materials & interfaces. 2012. Vol. 4. No. 5. pp. 2561-2569.
RIS |
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RIS Copy
TY - JOUR
DO - 10.1021/am300232z
UR - https://doi.org/10.1021/am300232z
TI - One-Pot Noninjection Route to CdS Quantum Dots via Hydrothermal Synthesis
T2 - ACS applied materials & interfaces
AU - Aboulaich, Abdelhay
AU - Billaud, Denis
AU - Abyan, Mouhammad
AU - Balan, Lavinia
AU - Medjadhi, Ghouti
AU - Gaumet, J.J
AU - Ghanbaja, Jaafar
AU - Schneider, R.
PY - 2012
DA - 2012/04/30 00:00:00
PB - American Chemical Society (ACS)
SP - 2561-2569
IS - 5
VL - 4
SN - 1944-8244
SN - 1944-8252
ER -
BibTex |
Cite this
BibTex Copy
@article{2012_Aboulaich,
author = {Abdelhay Aboulaich and Denis Billaud and Mouhammad Abyan and Lavinia Balan and Ghouti Medjadhi and J.J Gaumet and Jaafar Ghanbaja and R. Schneider},
title = {One-Pot Noninjection Route to CdS Quantum Dots via Hydrothermal Synthesis},
journal = {ACS applied materials & interfaces},
year = {2012},
volume = {4},
publisher = {American Chemical Society (ACS)},
month = {apr},
url = {https://doi.org/10.1021/am300232z},
number = {5},
pages = {2561--2569},
doi = {10.1021/am300232z}
}
MLA
Cite this
MLA Copy
Aboulaich, Abdelhay, et al. “One-Pot Noninjection Route to CdS Quantum Dots via Hydrothermal Synthesis.” ACS applied materials & interfaces, vol. 4, no. 5, Apr. 2012, pp. 2561-2569. https://doi.org/10.1021/am300232z.
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