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Green biosynthesis of silver nanoparticles and nanomolar detection of p-nitrophenol |
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| Authors: | Chelladurai Karuppiah Selvakumar Palanisamy Shen-Ming Chen R. Emmanuel M. Ajmal Ali P. Muthukrishnan P. Prakash Fahad M. A. Al-Hemaid |
| Affiliation: | 1. Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, Taipei, 106, Taiwan, ROC 3. Department of Botany and Microbiology, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia 2. Post Graduate and Research Department of Chemistry, Thiagarajar College, Madurai, 625009, Tamilnadu, India |
| Abstract: | Green biosynthesis of nanoparticles and their applications in sensor field is of great interest to the researchers. We report herein a simple green approach for the synthesis of silver nanoparticles (Ag-NPs) using Acacia nilotica Willd twig bark and its application for the detection of 4-nitro phenol (4-NP). The synthesized Ag-NPs were characterized by Transmission electron microscopy, X-ray diffraction and elemental analysis. The size of synthesized Ag-NPs was in the range of 10–50 nm. The Ag-NPs modified electrode shows a high sensitivity and selectivity towards the sensing of 4-NP. The fabricated modified electrode shows a low detection limit of 15 nM on the wider linear response range from 100 nM to 350 μM with the sensitivity of 2.58?±?0.05 μAμM?1 cm?2. In addition, the fabricated sensor shows good repeatability and reproducibility. The schematic representation of the fabrication of Ag-NPs and application of 4-nitrophenol sensing |
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