Zinc ferrite nanoparticles: simple synthesis via lyophilisation and electrochemical application as glucose biosensor

Abstract

With increasing diabetes patients in the near future, development of non-enzymatic glucose biosensor is highly demanded due to their greater sensitivity and resistance to external stimuli compared to enzymatic biosensors. Zinc ferrite (ZnFe2O4, ZFO) nanoparticles (NPs) were fabricated using a simple solution combustion method together with freeze drying. The NPs have high crystallinity, large aspect ratios and narrow size distributions. Plenty of defects have been induced during lyophilisation and greatly improves the glucose biosensing performance during electrochemistry test. The freeze-dried ZFO NPs are highly crystalline and agglomeration-free, these assures the sample with high sensitivity, superior selectivity, low detection limit and outstanding stability for electrochemical glucose biosensing.

Recent advances in zinc ferrite (ZnFe2O4) based nanostructures for magnetic hyperthermia applications

“…Another simple method for ZFNP synthesis, the combustion method, 36,66–70 typically involves formation of a gel of the desired ratio of precursors in the presence of a mild reducing agent, with citric acid being the most frequently used. This gel is combusted into ashes at an appropriate temperature.…”

CuO Nanowires Fabricated by Thermal Oxidation of Cu Foils towards Electrochemical Detection of Glucose

“…In addition, Cu-based materials are shown to facilitate the inherent tendency for the oxidation of glucose. On the other hand, many oxide materials (especially transition metal oxides) show extraordinary performance in the electrocatalytic oxidation of glucose [20], owing to the high activity and adsorption capability contributed by varying oxidation states and formation of nanostructures.…”