AI Article Synopsis

  • Researchers created a nanosensor using carbon nanocoils and zinc-tetraphenylporphyrin to detect catechol and hydroquinone, which are harmful pollutants.
  • The unique combination of materials enhances detection efficiency, showing good sensitivity and clear results for both substances across a range of concentrations.
  • The sensor demonstrated stability for 30 days, high selectivity, and reliable repeatability during tests, making it a promising tool for environmental monitoring.

Article Abstract

Non-enzymatic electrochemical detection of catechol (CC) and hydroquinone (HQ), the xenobiotic pollutants, was carried out at the surface of novel carbon nanocoils/zinc-tetraphenylporphyrin (CNCs/Zn-TPP) nanocomposite supported on glassy carbon electrode. The synergistic effect of chemoresponsive activity of Zn-TPP and a large surface area and electron transfer ability of CNCs lead to efficient detection of CC and HQ. The nanocomposite was characterized by using FT-IR, UV/vis. spectrophotometer, SEM and energy dispersive X-ray spectroscopy (EDS). Cyclic voltammetry, differential pulse voltammetry (DPV) and electrochemical impedance spectroscopy were used for the electrochemical studies. CNCs/Zn-TPP/GCE nanosensor displayed a limit of detection (LOD), limit of quantification (LOQ) and sensitivity for catechol as 0.9 µM, 3.1 µM and 0.48 µA µM cm, respectively in a concentration range of 25-1500 µM. Similarly, a linear trend in the concentration of hydroquinone detection was observed between 25 and 1500 µM with an LOD, LOQ and sensitivity of 1.5 µM, 5.1 µM and 0.35 µA µM cm, respectively. DPV of binary mixture pictured well resolved peaks with anodic peak potential difference, ∆E of 110 mV showing efficient sensing of CC and HQ. The developed nanosensor exhibits stability for up to 30 days, better selectivity and good repeatability for eight measurements (4.5% for CC and 5.4% for HQ).

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7930085PMC
http://dx.doi.org/10.1038/s41598-021-84294-7DOI Listing

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