Journal
JOURNAL OF ALLOYS AND COMPOUNDS
Volume 715, Issue -, Pages 254-265Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2017.04.298
Keywords
Chemical synthesis; Precipitation; Electrochemical reactions; Electrochemical impedance spectroscopy; Transmission electron microscopy; TEM
Categories
Funding
- UGC-BSR, New Delhi, India [F.4-1/2006(BSR)/7-188/200(BSR)]
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Cobalt doped ZnO/reduced graphene oxide (Co: ZnO/RGO) nanorods were synthesized by a chemical coprecipitation method. The morphological and physical properties were analyzed by High Resolution Scanning Electron Microscope (HR-SEM), Transmittance Electron Microscope (TEM), Fourier Transform Infra-Red spectroscopy (FTIR), X-Ray Diffraction (XRD) and UV-VIS NIR spectroscopy (UV-VIS NIR). The catalytic activity of synthesized nanostructure toward Cd (II) and Pb (II) ions oxidation was investigated by the electrochemical techniques and Co: ZnO/RGO nanorods exhibited an excellent electrocatalytic oxidation of Cd (II) and Pb (II) ions. Difference Pulse Voltammetry (DPV) studies shown that the fabricated electrode had excellent sensitivity for Cd (II) and Pb (II) ions with the detection limit of 0.94 mg/L (Cd (II)) and 0.83 mg/L (Pb (II)) over a concentration range of 10-90 mg/L. Finally, the antibacterial activity test towards the gram positive (Staphylococcus aureus) and gram negative (Escherichia coli) showed that the Co: ZnO/RGO nanorods have better antibacterial activity compared to ZnO/RGO. (C) 2017 Elsevier B.V. All rights reserved.
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