title: Synthesis and Characterization of Porous MnCo2O4for Electrochemical Determination of Cadmium ions in Water Samples.
abstract: To utilize the maximum activity of nanomaterials, it was specifically synthesized by appropriate physicochemical properties. In that aspect, we have described the synthesis of porous MnCo2O4by simple chemical route and applied for the selective detection of cadmium (Cd (II)). The as-prepared porous MnCo2O4was characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), Brunauer-Emmett-Teller (BET) adsorption isotherm, X-ray diffraction pattern analysis (XRD), Fourier transform infra-red spectroscopy (FT-IR), energy dispersive X-ray (EDX) and electrochemical techniques. The porous MnCo2O4exhibited an excellent electrochemical behaviour and good analytical response towards the determination of Cd (II). Those analytical factors such as pH, deposition potential and deposition time are optimized by using differential pulse anodic stripping voltammetry (DPASV). A wide linear concentration range from 2.3 to 120 µg L-1, limit of detection (LOD) of 0.72 µg L-1and the limit of quantification (LOQ) of 0.91 µg L-1were achieved for determination of Cd (II). The selectivity of the developed sensor was explored in the presence of co-interfering ions. Also our sensor exhibits a good stability, reproducibility and repeatability. In addition, the practicability of proposed sensor was evaluated for the detection of Cd (II) in real water samples.
authors.affiliation: National Taipei University of Technology, Taipei, 106, Taiwan, Republic of China.
authors.forename: Murugan
authors.initials: M
authors.lastname: Velmurugan
authors.affiliation: National Taipei University of Technology, Taipei, 106, Taiwan, Republic of China. smchen78@ms15.hinet.net.
authors.forename: Shen-Ming
authors.initials: SM
authors.lastname: Chen