Nanostructured Metal–Metal Oxides and Their Electrocatalytic Applications

Voltammetric Determination of Isoniazid Drug in Various Matrix by Using CuOx Decorated MW‐CNT Modified Glassy Carbon Electrode

“…Nowadays, modification of the electrode surfaces with nanomaterials is method of choice for improving sensitivity, selectivity and precision. Carbon allotropes , conducting polymers , metal oxides , metal nanoparticles and their combinations are the most known modifiers for the achieving not only for highest sensitivity but also, satisfactory selectivity for trace analysis. Since their discovery in 1991 by Iijima, carbon nanotubes (CNTs) are very versatile materials because of their unique characteristics such as; chemical and thermal stability, conductivity, high surface area.…”

Fabrication and characterization of enhanced hydrazine electrochemical sensor based on gold nanoparticles decorated on the vanadium oxide, ruthenium oxide nanomaterials, and carbon nanotubes composites

“…In this study, the preparation of VOx-RuOx with PD was performed with minor modification to the procedure of MnOx-VOx, MnOx-MoOx, and MnOx-Vox. used in our previous studies [31,35,38]. Figure S1 shows the cyclic voltammetry (CV) response for the electrochemical deposition of AuNPs on (VOx-RuOx)/CNT/GCE surface.…”

“…A 10 mL of 10 mM HCl supporting electrolyte solution containing 4.0 mM RuClx.H 2 0 and 50 mM NaVO 3 was transferred to the voltammetric cell and purged with N 2 gases for 5 min. The electrochemical pulse deposition (PD) process was studied with minor modifications to the procedures used to obtain other mixed-valent metal oxides (MnOx-MoO, MnOx-VOx) in our previous publications [31,35,38]. Briefly, the electrode potential is kept at -0.9 V for 5 s and then kept at +0.2 V for 5 s and coated by starting the cycle 100 times (not shown).…”

“…Nanostructured metal oxides have been evaluated in various energy devices such as fuel and solar cells, Li-ion batteries, and supercapacitors. Mixed metal oxides exhibit stoichiometric or nonstoichiometric compositions [31]. Electrocatalytic activity can be explained by exhibition of strong electron-electron interactions [38].…”

Pulsed Deposited Manganese and Vanadium Oxide Film Modified with Carbon Nanotube and Gold Nanoparticle: Chitosan and Ionic Liquid‐based Biosensor

“…Repetitive cycling of the potential of a carbon based [8] or indiumÀ tin oxide (ITO) electrodes [3] dipped into a cell containing a transition metal ions results in a mixed-valent metal oxide (MeO x ) formation which is most probably responsible from the catalytic activity of the oxide film [9]. Besides the cycling the potential, electrochemical pulsed deposition (PD) has become popular in the last decade, and it was revealed that the pattern of applied potential determines the compositions and morphologies of MeOx deposits [9,10].…”