An Amperometric Biological Toxic Hydrazine Sensor Based on Multiwalled Carbon Nanotubes and Iron Tetrasulfonated Phthalocyanine Composite Modified Electrode

Rajkumar Devasenathipathy, Selvakumar Palanisamy, Shen Ming Chen, Chelladurai Karuppiah, Veerappan Mani, Sayee Kannan Ramaraj, M. Ajmal Ali, Fahad M.A. Al-Hemaid

    Research output: Contribution to journalArticlepeer-review

    20 Scopus citations

    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 100nML-1 to 3μML-1 with the detection limit of 7.6nML-1. The response time of hydrazine was found as 6s with a high sensitivity of 7.615μA/μML-1cm-2.

    Original languageBritish English
    Pages (from-to)1403-1410
    Number of pages8
    JournalElectroanalysis
    Volume27
    Issue number6
    DOIs
    StatePublished - 1 Jun 2015

    Keywords

    • Amperometry
    • Bionanotechnology
    • Biosensors
    • Hydrazine
    • Iron tetrasulfonated phthalocyanine
    • Multiwalled carbon nanotubes

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