Efficient electro-chemical sensor for sensitive Cd2+detection based on novel in-situ synthesized hydrazonoyl bromide (HB)

• Published in: Journal of molecular structure Vol. 1231; p. 129690
• Main Authors: Aqlan, Faisal M., Alam, M.M., Al-Bogami, Abdullah S., Saleh, Tamer S., Wani, Mohmmad Y., Al-Farga, Ammar, Asiri, Abdullah M., Karim, Mohammad Razaul, Ahmed, Jahir, Fazal, M.A., Rahman, Mohammed M.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 05-05-2021
• Subjects: Cd2+ ion detection; Electrochemical method; Environmental safety; Hydrazonoyl bromide; In-situ visual inspection; In-situ visual inspection; Environmental safety; Electrochemical method; Cd2+ ion detection; Hydrazonoyl bromide
• ISSN: 0022-2860; 1872-8014
• DOI: 10.1016/j.molstruc.2020.129690

•Synthesis of novel hydrazonoyl bromide (HB) containing a trifluoromethyl moiety.•Cd2+ sensor was developed by HB/Nafion/GCE assembly for the first time.•It exhibited the sensitivity (~51.12 µAµM−1cm−2) and detection limit (~53.85±2.69 pM) ever published in the literature.•Environmental and healthcare safety.
In this approach, an efficient methodology for synthesis of a novel hydrazonoyl bromide (HB) containing trifluoromethyl moiety by using fluorine-containing building blocks was achieved. The synthesized HB was fully characterized with various methods such as Infra-red spectroscopy (IR), Thin layer chromatography (TLC), 1H NMR, 19F-NMR, 13C NMR, and elemental analyses. In-situ potential examination as reliable technique, an electrochemical sensor based on prepared HB was used for the selective detection of environmental hazardous heavy metal ion, Cd2+. The fabricated sensor was found to perform linearly over the concentration range (linear dynamic range) of 0.1 nM~0.01 mM of Cd2+ ion and the sensitivity (51.12 µAµM−1cm−2) and detection limit (53.85±2.69 pM) of the proposed sensor were estimated from the slope of calibration curve (plot of current versus concentration). Furthermore, the proposed Cd2+ ion sensor was exhibited good analytical performances such reproducibility, stability in phosphate buffer medium and efficiency to detect Cd2+ ion in real environmental samples. This progress in the field of metal ion sensor development might be a cost effective and efficient method in the detection of unsafe and hazardous ions for the safety of environmental and ecological fields in broad scales.
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