Ultrasonic preparation and nanosheets supported binary metal oxide nanocomposite for the effective application towards the electrochemical sensor |
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| Institution: | 1. Department of Materials, Imperial College London, London SW7 2AZ, United Kingdom;2. Department of Chemistry, Bannari Amman Institute of Technology, Sathyamangalam, Erode, India;3. Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, No. 1, Section 3, Chung-Hsiao East Road, Taipei 106, Taiwan, ROC;4. Department of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia;5. Central Laboratory, College of Science, King Saud University, PO Box 2455, Riyadh 11451, Saudi Arabia;6. Department of Food Science and Nutrition, College of Food & Agriculture Sciences, King Saud University, PO Box 2455, Riyadh 11451, Saudi Arabia;7. Department of Botany and Microbiology, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia |
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| Abstract: | Binary metal oxides (La2O3@SnO2) decorated reduced graphene oxide nanocomposite was synthesized by ultrasound process in an environmentally benign solvent with a working frequency of 25 and 40 kHz (6.5 l200 H, Dakshin, India and maximum input power 210 W). Further, to enhance the electrocatalytic activity, the reduced graphene oxide (rGO) was prepared from graphene oxide by ultrasonication method. As prepared La2O3@SnO2/rGO was scrutinized using XRD, TEM, EDX and quantitative test for the structural and morphology properties. As modified La2O3@SnO2/rGO nanocomposite exhibits better electrochemical activity towards the oxidation of methyl nicotinate with higher anodic current compared to other modified and unmodified electrode for the detection of methyl nicotinate with larger linear range (0.035–522.9 µM) and lower limit of detection (0.0197 µM). In addition, the practical feasibility of the sensor was inspected with biological samples, reveals the acceptable recovery of the sensor in real samples. |
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| Keywords: | Methyl nicotinate detection Binary metal oxide Nanocomposite Ultrasonic preparation Cyclic voltammetry Reduced graphene oxide |
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