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Electrochemical Sensitive Determination of Nanomolar Guanine from ZnO Nanorods Coated on Platinum Electrode |
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| Authors: | Sanjeev K Sharma Narinder Kaur Jasminder Singh S Sankar S S Gaur Sejoon Lee Deuk Young Kim Narinder Singh Harpreet Singh |
| Institution: | 1. Semiconductor Materials and Device Laboratory, Department of Semiconductor Science, Dongguk University‐Seoul, Seoul 100715, Republic of Korea tel: +82‐2‐2260‐3183;2. Department of Chemistry, Indian Institute of Technology (IIT) Ropar, Rupnagar, Panjab 140001, India;3. Department of Physics, Shivaji College, University of Delhi, Raja Garden, New Delhi‐110027, India;4. School of Mechanical, Materials & Energy Engineering, IIT Ropar, Rupnagar, Punjab 140001, India |
| Abstract: | The crystalline ZnO nanorods, grown on Si‐substrate (100) at a low temperature using a hydrothermal process were used for modification of platinum electrode using PVC and THF for in order to test their chemosensor activity. The modified electrode can be used for selective nanomolar determination of guanine in aqueous media without any interference from other biomolecules. The prepared chemosensor has a lower detection limit of 40 nM for guanine, and a modification of the electrodes with ZnO nanorods increases the reproducibility by reducing the fouling effect caused by the oxidation of biomolecules on the electrode surface as the prepared electrode can be used for more than 30 consecutive scans and can be used for 5 days without any change in current intensity or sensitivity. |
| Keywords: | ZnO nanorods Microstructural analysis Current voltage (C V) measurement Chemosensor activity of Guanine |