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Highly selective and sensitive electrochemical sensing of trace Zn 2+ ions, by grafted Tricholoma mushroom polysaccharide/Ag composite nanoparticles in aqueous medium
Author(s) -
Mondal Barun,
Banerjee Shankha,
Samanta Santu Kumar,
Senapati Sanjib,
Tripathy Tridib
Publication year - 2021
Publication title -
applied organometallic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.53
H-Index - 71
eISSN - 1099-0739
pISSN - 0268-2605
DOI - 10.1002/aoc.6171
Subject(s) - detection limit , chemistry , aqueous solution , electrochemical gas sensor , mushroom , electrochemistry , metal ions in aqueous solution , cyclic voltammetry , nuclear chemistry , nanoparticle , ion , analytical chemistry (journal) , inorganic chemistry , electrode , nanotechnology , chromatography , materials science , organic chemistry , food science
Herein, we report a highly sensitive, selective and simple electrochemical sensor for the detection of Zn 2+ ions in less than 1 nM concentration range in aqueous environment. A naturally occurring and frequently cultivated Tricholoma mushroom polysaccharide is used for the preparation of novel sensor. In the present investigation we demonstrate an electrochemical sensor, grafted Tricholoma mushroom polysaccharide‐based silver composite nanoparticles (TMPSGP‐Ag NPs) which show remarkable electrochemical sensing performance of Zn 2+ ions without interfering with the other relevant metal ions. The sensing performance is carried out by cyclic voltammetry (CV) and chronoamperometry (CA) analysis under optimised condition. The limit of detection (LOD) is found to be 0.53 nM, which is much lower than some other reported works as well as lower than the limit of World Health Organization (WHO). The stability, reproducibility and repeatability properties of the sensor are examined where a satisfactory result is obtained. The practical application of the proposed sensor is tested by the detection of Zn 2+ ions using river water sample with an excellent performance. Therefore, the developed sensor can be used as a highly efficient and effective Zn 2+ ions detector in aqueous medium.