Preparation and Exploration on the Electrochemical Behavior of Nickel Oxide Nanoparticles Coated Bacterial Nanowires

• Published in: Journal of cluster science Vol. 29; no. 3; pp. 483 - 492
• Main Authors: Maruthupandy, Muthuchamy, Anand, Muthusamy, Maduraiveeran, Govindhan, Hameedha Beevi, Akbar Sait, Jeeva Priya, Radhakrishnan
• Format: Journal Article
• Language: English
• Published: New York Springer US 01.05.2018; Springer Nature B.V
• Subjects: Catalysis; Chemistry; Chemistry and Materials Science; Electrochemical analysis; Electrochemical impedance spectroscopy; Electrode polarization; Electrodes; Electron transfer; Experiments; Fourier transforms; Glassy carbon; Infrared spectrophotometers; Infrared spectroscopy; Inorganic Chemistry; Metal oxides; Methods; Morphology; Nanochemistry; Nanoparticles; Nanowires; Nickel; Nickel oxides; Nitrates; Original Paper; Physical Chemistry; Scanning electron microscopy; Silver; Spectrum analysis; Synthesis; Voltammetry; Work stations; United States > US; Bacterial nanowires; Electrochemical conductivity; Nickel oxide nanoparticles
• ISSN: 1040-7278; 1572-8862
• DOI: 10.1007/s10876-018-1354-x

The controlled synthesis of nickel oxide nanoparticle (NiO NPs) were synthesized by homogeneous precipitation method and have been characterized using UV–visible spectrophotometer, fourier transform-infrared spectroscopy, X-ray diffraction, atomic force microscope, scanning electron microscope and high resolution-transmission electron microscope. The synthesized NiO NPs was spherical in shape with an average size ranged between 3 and 5 nm. Subsequently, synthesis of NiO NPs coated on a bacterial nanowires (BNWs) film pre-cast on a glassy carbon electrode surface and the morphology and nature of the prepared composite was characterized using HR-TEM. The electro-chemical behavior of NiO NPs coated bacterial nanowires (NiO NPs-BNWs) was observed using cyclic voltammetry, linear sweep voltammetry and electrochemical impedance spectroscopy analysis. Highly comparable electrochemical conductivity of NiO NPs-BNWs was observed in this study. The BNWs sample exhibited a polarization resistance (Rp) to be 4457 Ω and the NiO NPs-BNWs sample exhibited polarization resistance (Rp) about 2270.4 Ω. The BNWs exhibited a CPE-T value to be 6.26 µF cm −2 and the NiO NPs-BNWs sample exhibited CPE-T to be 9.32 µF cm −2 . The enhancement of peak currents is ascribed to the short heterogeneous electron transfer among the NiO NPs-BNWs. The defined nanolayer provides a novel platform for the next generation electrochemical applications.