Journal
TALANTA
Volume 225, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.talanta.2020.121974
Keywords
Magnetic nanomaterials; Electroanalytical sensors; Magnetoassay; Magnetic immunoassay; Voltammetry; Amperometry
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Magnetic nanomaterials (MNMs) have attracted attention in various fields due to their ferromagnetic/superparamagnetic properties, low toxicity, and high biocompatibility. They are utilized as sorbents, electrode modifiers, and dual-function agents in electroanalytical methods. Additionally, their catalytic activities in electroanalytical methods have been explored, including redox electrocatalytic, nanozymes catalytic, catalyst gate, and nanocontainer.
Magnetic nanomaterials (MNMs) have gained high attention in different fields of studies due to their ferromagnetic/superparamagnetic properties and their low toxicity and high biocompatibility. MNMs contain magnetic elements such as iron and nickel in metallic, bimetallic, metal oxide, and mixed metal oxide. In electroanalytical methods, MNMs have been applied as sorbents for sample preparation before the electrochemical detection (sorbent role), as the electrode modifier (catalytic role), and the integration of the above two roles (as both sorbent and catalytic agent). In this paper, the application of MNMs in electroanalytical methods have been classified based on the main role of the nanomaterial and discussed separately. Furthermore, catalytic activities of MNMs in electroanalytical methods such as redox electrocatalytic, nanozymes catalytic (peroxidase, catalase activity, oxidase activity, superoxide dismutase activity), catalyst gate, and nanocontainer have been discussed.
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