ZnO/CdS nanocomposites: Synthesis, structure and morphology_中国颗粒学会

ZnO/CdS nanocomposites: Synthesis, structure and morphology_中国颗粒学会

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Partic. vol. 10 no. 6 pp. 722-728 (December 2012)
doi: 10.1016/j.partic.2012.03.009

ZnO/CdS nanocomposites: Synthesis, structure and morphology

G. Murugadoss^*

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murugadoss_g@yahoo.com

Highlights

► ZnO/CdS nanocomposites were synthesized by a chemical method using a water–ethanol matrix. ► Characterization results showed that CdS nanoparticles with a mean size of 4 nm were grown on ZnO nanowires. ► Luminescence measurements of ZnO/CdS nanocomposites showed narrow and enhanced blue emission.

Abstract

Uncoated ZnO, CdS and ZnO/CdS nanocomposites were successfully synthesized chemically in atmospheric air using a water–ethanol matrix. The as-obtained samples were characterized by X-ray diffraction, transmission electron microscopy (TEM), UV–vis and photoluminescence (PL) spectrophotometry. The luminescence measurements of ZnO/CdS nanocomposites showed narrow and enhanced PL emission in the blue region. PL quenching was observed in ZnO/CdS nanocomposites by increasing Cd and S concentrations.

Graphical abstract

Narrow and enhanced blue emission of ZnO/CdS nanocomposites.

Keywords

Nanocomposites; Surface defect; Quantum confinement; TEM; Photoluminescence