The
new generation of glucose biosensors has gained immense research
interest owing to its cost effectiveness, quick response, good stability,
reproducibility, and low detection limit. The enzymatic glucose sensor
suffers from numerous intrinsic disadvantages; therefore, there is
a need to develop a new biosensor which can overcome the disadvantages
of enzymatic glucose biosensors. In that context, metal oxide-based
nanostructures and their compostites exhibit properties that can overcome
the drawbacks of enzymatic glucose sensors. This review discusses
recent developments in some of the metal oxides (CoO, NiO, CuO, and
ZnO) along with their composites as well as their applications toward
nonenzymatic glucose sensors. The metal oxide composites possess excellent
features which signify the potential commercial applications of metal
oxide-based composites for nonenzymatic electrochemical glucose sensing.