Synthetic control of the surface area in nickel cobalt oxide for glucose detection via additive-assisted wet chemical method

Abstract

We investigated the effect of specific surface area on the electrochemical properties of NiCo2O4 (NCO) for glucose detection. NCO nanomaterials with controlled specific surface areas were prepared by additive-assisted hydrothermal synthesis, and self-assembled nanostructures with urchin-, pine-needle-, tremella-, and flower-like morphologies were obtained. The novelty of this method is the systematic control of chemical reaction routes assisted by the addition of different additives during synthesis, which results in the spontaneous formation of various morphologies without any difference in the crystal structure and chemical states of the constituent elements. Such morphological control of NCO nanomaterials leads to considerable changes in the electrochemical performance for glucose detection. Combined with materials characterization, the relationship between the specific surface area and the electrochemical performance is discussed for glucose detection. This work can provide scientific insights for tailoring the surface area of nanostructures, which determines their functionality for potential applications in glucose biosensors.

Electrical, Magnetic, and Sensing Properties of Acetone in Co3–xNixO4-rGO Samples

“…Therefore, the synthesis approach significantly contributes to achieving the desired material properties. Moreover, particle size influences the surface area of the nanostructures, affecting their ability to detect gases . A larger surface area provides more active sites for gas adsorption, thereby improving the material’s sensitivity to gas presence.…”