期刊
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
卷 33, 期 -, 页码 119-126出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.mssp.2015.01.033
关键词
Photodegradation; Palladium; Reduced graphene oxide; ZnS
类别
资金
- Faculty of Science, University of Johannesburg, South Africa
- National Research Fund of South Africa
- Nanotechnology and Applications Centre, University of Allahabad, Allahabad, India
The removal of toxic organic pollutants from wastewater using reduced graphene oxide (rGO) based photocatalysts has dominated recent scientific research. As a result numerous nanomaterials have been studied and used for wastewater remediation. ZnS has been widely studied due to its versatile application in photocatalysis. This study presents the synthesis of a series of Pd-decorated ZnS/rGO nanocomposites by a coprecipitation method. The materials were characterized using Raman spectroscopy, Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM)-EDS, UV/visible spectrophotometry, and BET surface area analysis. Indigo carmine (IC) dye (20 ppm) was chosen as a model for organic pollutants and was used to evaluate the photocatalytic performance of the Pd-ZnS/rGO nanocomposites under simulated solar light with varying concentrations of Pd in the host material. Pd-ZnS/rGO showed significant visible light induced photocatalytic activity towards the degradation of IC. Highest photocatalytic activity was observed for the 1.0% Pd-ZnS/rGO sample (k=2.19 x 10(-2) min(-1)). (C) 2015 Elsevier Ltd. All rights reserved.
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