Ni1–xMnxCo2O4 Nanoparticles as High-Performance Electrochemical Sensor Materials for Acetaminophen Monitoring
Year: 2025
Type: article
Abstract: High Resolution Image Download MS PowerPoint Slide Ternary metal oxides, known for their superior electrical and optical properties compared to binary or conventional oxides, hold significant promise for catalysis and energy storage applications. This study investigates the electrochemical performance of Ni 1– x Mn x Co 2 O 4 nanoparticles for detecting acetaminophen in aqueous phosphate buffer solution. The cobaltite nanoparticles were obtained through a simple gel-combustion synthesis, and the sensors were characterized using cyclic voltammetry, chronoamperometry, and differential pulse voltammetry. The anodic peak currents associated with acetaminophen oxidation were assessed by varying the scan rate of current–voltage cycles. Among the sensors tested, the one fabricated with Ni 0.5 Mn 0.5 Co 2 O 4 nanoparticles as an active material exhibited the highest sensitivity of 38.2 μA cm –2 mM –1 and a detection limit of approximately 2 μM, demonstrating its potential for sensitive and efficient acetaminophen detection. Moreover, the sensors fabricated using these ternary oxide nanostructures demonstrate a rapid chronoamperometric response time of 35.4 s and a decay lifetime of 0.31 s, highlighting the fast detection capabilities of acetaminophen. The electrochemical oxidation mechanism of acetaminophen and the charge transfer characteristics at the electrode–electrolyte interface have been discussed.
Source: ACS Omega
Language: English
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $1,935
Awards: G1995122454, G8694206993
OpenAlex ID: W4408500167