Metal oxide nanoparticles in electrochemical sensing and biosensing: a review

Abstract

This review (with (318) refs) describes progress made in the design and synthesis of morphologically different metal oxide nanoparticles made from iron, manganese, titanium, copper, zinc, zirconium, cobalt, nickel, tungsten, silver, and vanadium. It also covers respective composites and their function and application in the field of electrochemical and photoelectrochemical sensing of chemical and biochemical species. The proper incorporation of chemical functionalities into these nanomaterials warrants effective detection of target molecules including DNA hybridization and sensing of DNA or the formation of antigen/antibody complexes. Significant data are summarized in tables. The review concludes with a discussion or current challenge and future perspectives. Graphical abstract ᅟ.

Keywords: Amperometry; Electrocatalysis; Electrochemical sensing; Graphene; MCo2O4; MWCNT; Modified electrode; Molecular imprinted polymer sensor; Nickel hydroxide electrodes; Sensitivity.