Solid-state Electrochemical Sensor Based on a Cross-linked Copper(II)-doped Copolymer and Carbon Nanotube Material for Selective and Sensitive Detection of Monohydrogen Phosphate |
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| Authors: | Cihan Topcu Fatih Coldur Bulent Caglar K Volkan Ozdokur Osman Cubuk |
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| Institution: | 1. Department of Biomedical Engineering, Faculty of Engineering, Samsun University, Samsun, Turkey;2. Department of Chemistry, Faculty of Arts and Sciences, Erzincan Binali Yildirim University, Erzincan, Turkey |
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| Abstract: | A novel solid-state electrochemical sensor based on a newly synthesized cross-linked copper(II) doped-copolymer and carbon nanotube material was developed for the direct determination of monohydrogen phosphate ions (HPO42?). The synthesized copolymers were characterized by FTIR, XPS, TG/DTG-DTA and SEM techniques. The sensor had a Nernstian slope:-30.7±0.4 mV/decade, linear concentrations range: 1.0×10?6 - 1.0×10?1 M, detection limit: 6.5×10?7 M, response time: 4 s and life time: 17 weeks. The sensor displayed constant potentials in the pH range 7.0-9.5. The sensor was successfully used as an indicator electrode in potentiometric titration and the direct determination of HPO4 2? in water samples. |
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| Keywords: | Monohydrogen phosphate sensor Potentiometric monohydrogen phosphate determination Solid-state sensor Copper(II) doped-copolymer Carbon nanotube Water analysis |
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