Synthesis of hierarchical hollow spherical CdS nanostructures by microwave hydrothermal process

Microwave-assisted synthesis of Au/CdS nanorods for a visible-light responsive photocatalyst

“…Conventionally, TiO 2 is used to eliminate organic pollutants in wastewater treatment plants due to low cost, stability, and abundance. [5][6][7] The morphology and size have signicant inuence on the physical and optical properties. 2 Visible-light responsive photocatalysts, such as cadmium sulde (CdS) systems, with narrow band gaps have been suggested in the literature.…”

“…1 A well-known limitation of TiO 2 is the wide band gap (3.2 eV) that limits operating conditions, i.e., working under UV irradiation. 5 Nanostructured CdS such as spherical-shaped, 6 core-shell, 8 nanorods, 9 and hierarchical nanoscrystals 5 have been successfully prepared by hydrothermal process, thermal evaporation, microwave-assisted method, and template-based method. [3][4][5] CdS, as an important II-VI semiconductor with a direct narrow band gap (2.42 eV) and large exciton binding energy, has very broad applications in light-emitting diodes, solar cells, and photocatalysts.…”

“…2 Visible-light responsive photocatalysts, such as cadmium sulde (CdS) systems, with narrow band gaps have been suggested in the literature. 5,10 Microwave hydrothermal approach is ideal to synthesize complicated CdS structures under mild conditions with shorter times and lower temperatures than common hydrothermal methods using autoclave. [5][6][7] The morphology and size have signicant inuence on the physical and optical properties.…”

“…[3][4][5] CdS, as an important II-VI semiconductor with a direct narrow band gap (2.42 eV) and large exciton binding energy, has very broad applications in light-emitting diodes, solar cells, and photocatalysts. 1,5,7 In this work, we synthesized Au-decorated CdS (Au/CdS) nanorods by microwave methods and evaluated photocatalytic activity via degradation of methylene blue (MB). 5 Nanostructured CdS such as spherical-shaped, 6 core-shell, 8 nanorods, 9 and hierarchical nanoscrystals 5 have been successfully prepared by hydrothermal process, thermal evaporation, microwave-assisted method, and template-based method.…”

“…2 Visible-light responsive photocatalysts, such as cadmium sulde (CdS) systems, with narrow band gaps have been suggested in the literature. [3][4][5] CdS, as an important II-VI semiconductor with a direct narrow band gap (2.42 eV) and large exciton binding energy, has very broad applications in light-emitting diodes, solar cells, and photocatalysts. [5][6][7] The morphology and size have signicant inuence on the physical and optical properties.…”