Title :
Synthesis and characterization of novel ZnS/CeO2 nanocomposites
Author :
Wetchakun, Natda ; Phanichphant, Sukon
Author_Institution :
Dept. of Phys. & Mater. Sci., Chiang Mai Univ., Chiang Mai, Thailand
Abstract :
Novel ZnS/CeO2 nanocomposite samples with different molar ratios were synthesized by the homogeneous precipitation method and hydrothermal method. The molar ratio of ZnS to CeO2 are 0.2:0.8, 0.4:0.6, 0.5:0.5, 0.6:0.4, and 0.8:0.2. Phase composition, crystallinity, crystal size, and morphology of novel ZnS/CeO2 nanocomposites were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and energy dispersive spectroscopy (EDS). The Brunauer, Emmett and Teller (BET) adsorption-desorption of nitrogen gas for specific surface area determination at the temperature of liquid nitrogen was performed on ZnS/CeO2 nanocomposites. The crystalline size of novel ZnS/CeO2 nanocomposites was found to be in the range of 5-10 nm with the corresponding BET specific surface areas in the range of 110-200 m2/g.
Keywords :
II-VI semiconductors; X-ray chemical analysis; X-ray diffraction; adsorption; cerium compounds; crystal growth from solution; crystal morphology; desorption; nanocomposites; nanofabrication; precipitation (physical chemistry); scanning electron microscopy; semiconductor growth; zinc compounds; Brunauer, Emmett and Teller adsorption-desorption; EDS; SEM; TEM; X-ray diffraction; XRD; ZnS-CeO2; crystal morphology; crystal size; crystalline size; crystallinity; energy dispersive spectroscopy; homogeneous precipitation method; hydrothermal method; molar ratio; nanocomposites; phase composition; scanning electron microscopy; size 5 nm to 10 nm; transmission electron microscopy; ZnS/CeO2; characterization; nanocomposites; synthesis;
Conference_Titel :
Nano/Micro Engineered and Molecular Systems (NEMS), 2010 5th IEEE International Conference on
Conference_Location :
Xiamen
Print_ISBN :
978-1-4244-6543-9
DOI :
10.1109/NEMS.2010.5592151
