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Analytical Detection and Electrocatalysis of Paracetamol in Aqueous Media Using Rare‐Earth Double‐Decker Phthalocyaninato Chelates as Electrochemically Active Materials
Author(s) -
Edward Sekhosana Kutloano,
Nkhahle Reitumetse,
Nyokong Tebello
Publication year - 2020
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.202002268
Subject(s) - electrocatalyst , electrochemistry , chelation , detection limit , inorganic chemistry , phthalocyanine , chemistry , nuclear chemistry , aqueous solution , materials science , electrode , organic chemistry , chromatography
Paracetamol (PA), being an analgesic and antipyretic medicine, can cause fatal hepatotoxicity and nephrotoxicity when overdosed. It is therefore important to develop electrochemical sensors that can monitor and quantify it in aquatic environments. In this study, rare‐earth sandwich‐type phthalocyaninato chelates based on neodymium ( 1 a ) and samarium ( 1 b ) were employed as electrocatalysts to modify glassy carbon electrodes ( GCE ) for the first time. It was found that 1 a ‐modified GCE (herein referred to as 1 a‐GCE ) is less conductive than 1 b ‐modified counterpart ( 1 b‐GCE ). A larger rate constant was also obtained for 1 b‐GCE . It was established that a faster oxidation rate efficiency was responsible for lower limit of detection value obtained for 1 b‐GCE as compared to 1 a‐GCE .