Structural characterization of CdS nanoparticles grown in polystyrene matrix by thermolytic synthesis |
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| Affiliation: | 1. Laboratoire de Chimie des Matériaux, Faculté des Sciences de Bizerte, 7021 Zarzouna, Tunisia;2. Youngstown State University, Department of Chemistry, One University Plaza, Youngstown, OH 44555-3663, USA;3. Cristallographie, Résonance Magnétique et Modélisations, (CRM2), UMR CNRS 7036, Institut Jean Barriol, Universitéde Lorraine, BP 70239, Bd des Aiguillettes, 54506 Vandoeuvre-les-Nancy, France;4. Laboratoire de Chimie Organometallique de Surface (LCOMS), Ecole Superieure de Chimie Physique Electronique, 69622 Villeurbanne Cedex, France;1. Department of Materials Science and Engineering, Seoul National University, 1 Gwanak-ro, Seoul, 08826, Republic of Korea;2. Department of Materials Science and Engineering, Frederick Seitz Materials Research Laboratory, University of Illinois at Urbana−Champaign, Urbana, IL, 61801, United States;3. Electronics and Telecommunications Research Institute (ETRI), 218 Gajeong-ro, Daejeon, 34129, Republic of Korea;4. Analytical Engineering Center, Samsung Advanced Institute of Technology, 130 Samsung-ro, Suwon, 16678, Republic of Korea;1. Institute of Surface Micro and Nano Materials, Key Laboratory of Micro-Nano Materials for Energy Storage and Conversion of Henan Province, Xuchang University, Xuchang 461000, China;2. Chengdu Green Energy and Green Manufacturing R&D Center, Chengdu 610207, China;3. College of Chemistry and Chemical Engineering, Xuchang University, Xuchang 461000, China;1. Department of Materials Science and Engineering, Sharif University of Technology, Azadi Avenue, 14588, Tehran, Iran;2. Department of Nursing, School of Nursing, Larestan University of Medical Sciences, Larestan, Iran |
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| Abstract: | Cadmium sulfide nanoparticles embedded in a polystyrene matrix (CdS/PS) were successfully prepared by in situ thermolysis of a cadmium thiolate precursor dispersed in the polymer. The heat-induced formation of cadmium sulfide was studied by thermogravimetric analysis and differential thermal analysis, while the chemistry of the reaction forming the CdS/PS compound was investigated by nuclear magnetic resonance and X-ray photoelectron spectroscopy. The structural characterization was performed by X-ray diffraction and transmission electron microscopy. The CdS nanocrystals are single crystals of cubic phase (zincblende structure) of spherical shape. The average diameter of the nanocrystals embedded in the polystyrene matrix achieved by our synthesis process is as small as 2.5 ± 0.5 nm. Room temperature UV–VIS absorption spectra exhibit a shoulder at 412 nm that is consistent with the presence of CdS nanocrystals of ∅ ≈ 2 nm. The role of the polymer on the nanoparticle growth was also discussed. |
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