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An Amperometric Biological Toxic Hydrazine Sensor Based on Multiwalled Carbon Nanotubes and Iron Tetrasulfonated Phthalocyanine Composite Modified Electrode |
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| Authors: | Rajkumar Devasenathipathy Selvakumar Palanisamy Shen‐Ming Chen Chelladurai Karuppiah Veerappan Mani Sayee Kannan Ramaraj M. Ajmal Ali Fahad M. A. Al‐Hemaid |
| Affiliation: | 1. Electroanalysis and Bioelectrochemistry Lab, Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, No.?1, Section 3, Chung‐Hsiao East Road, Taipei 106, Taiwan, ROC;2. Post Graduate and Research Department of Chemistry, Thiagarajar College, Madurai‐625009, Tamilnadu, India, Fax: +886‐2‐27025238;3. Tel: +886‐2‐27017147;4. Department of Botany and Microbiology, College of Science, King Saud University Riyadh 11451, Saudi Arabia |
| Abstract: | Hydrazines are well‐known for their diverse biological properties but especially for their toxicity. An amperometric hydrazine sensor was developed at multi‐walled carbon nanotubes (MWCNT) and iron tetrasulfonated phthalocyanine (FeTsPc) composite modified electrode for the first time. The TEM and UV‐Vis spectroscopy results revealed the successful formation of MWCNT/FeTsPc composite. Compared with the response of MWCNT and FeTsPc modified electrodes, the MWCNT/FeTsPc composite showed enhanced oxidation current response with lower overpotential for hydrazine. Under optimum conditions, the amperometric i–t response of hydrazine was linear in the concentration range from 100 nM L?1 to 3 μM L?1 with the detection limit of 7.6 nM L?1. The response time of hydrazine was found as 6 s with a high sensitivity of 7.615 μA/μM L?1 cm?2. |
| Keywords: | Bionanotechnology Multiwalled carbon nanotubes Iron tetrasulfonated phthalocyanine Hydrazine Biosensors Amperometry |