Fe-Doped CuO/MWCNT as a Sensing Material for Electrochemical Detection of Nitrite

With unique electrical and catalytic properties, CuO has been ubiquitously employed in many applications including electrochemical sensors. Enhanced electrocatalytic performance of can be achieved through doping. This work explored the potential 3 mol% Fe-doped CuO/multi-walled carbon nanotube (MWCNT) composite for nitrite detection. The undoped powders, prepared using a solution combustion technique, had average particle sizes lower than 100 nanometres. Particle refinement enhancement specific surface area were observed CuO. CuO/MWCNT composites, hydrothermal impregnation tested their activities presence nitrite. Cyclic voltammetry results revealed reduction reaction at an applied voltage approximately −0.4 V. Superior peak currents evident composite. acceptable sensitivity, limit detection, selectivity, reusability, recovery percentage, demonstrated capability detection