Metallated porphyrin noncovalent interaction with reduced graphene oxide‐modified electrode for amperometric detection of environmental pollutant hydrazine

Journal Article

, Sakthinathan, S., Subbiramaniyan Kubendhiran, Shen‐Ming Chen, Mani Govindasamy, Fahad M.A. Al‐Hemaid, M.A.l Ali, P. Tamizhdurai, S. Sivasanker . 2017

• Publication Work Type: Research Work
• Publication Online URL: Metallated porphyrin noncovalent interaction with reduced graphene oxide‐modified electrode for amperometric detection of enviro
• Magazine \ Newspaper: Applied Organometallic chemistry
• Issue Number: 2017
• Volume Number: 2017
• Pages: 2017; e3703

Publication Abstract

reduced graphene oxide/platinum(II) tetraphenylporphyrin nanocomposite (RGO/
Pt‐TPP)‐modified glassy carbon electrode was developed for the selective detection
of hydrazine. The RGO/Pt‐TPP nanocomposite was successfully prepared via
noncovalent π–π stacking interaction. The prepared nanocomposite was characterized
using nuclear magnetic resonance, electrochemical impedance, ultraviolet–visible
and Raman spectroscopies, scanning electron microscopy and X‐ray diffraction.
The electrochemical detection of hydrazine was performed via cyclic voltammetry
and amperometry. The RGO/Pt‐TPP nanocomposite exhibited good electrocatalytic
activity towards detection of hydrazine with low overpotential and high oxidation
peak current. The fabricated sensor exhibited a wide linear range from 13 nM to
232 μM and a detection limit of 5 nM. In addition, the fabricated sensor selectively
detected hydrazine even in the presence of 500‐fold excess of common interfering
ions. The fabricated electrode exhibited good sensitivity, stability, repeatability and
reproducibility. In addition, the practical applicability of the sensor was evaluated
in various water samples with acceptable recoveries.