• Dimitrov, Ognian
• Tsacheva, Ivelina
• Gigova, Adriana
• Stefanov, Stefan
• Dimitrova, Mariela
• Uzun, Dzhamal

Abstract

<jats:title>Abstract</jats:title><jats:p>The microwave-assisted technique was applied to the preparation of composites from manganese(II) acetate and Carbon-supported (Vulcan XC-72R). Composites were prepared by chemical deposition of manganese(II) acetate nanoparticles onto Vulcan XC-72R carbon black (catalytic mass) using microwave irradiation. The new composites were physicochemically characterized by Energy-dispersive X-ray spectroscopy (EDX) with scanning electron microscopy (SEM), BET surface area, pore size distribution and X-ray diffraction (XRD). BET analysis of Mn<jats:sub>3</jats:sub>O<jats:sub>4</jats:sub>/Vulcan XC-72R composites obtained by alkali method has shown specific surface area of 1135 m<jats:sup>2</jats:sup>/g. Novel composites were electrochemically studied as catalysts for the remediation of organic contaminants in industrial waters. From novel catalytic mass, double-sided coated electrodes on a Nickel mesh conductor were made by pressing and heating at 250 °C. The prepared electrodes have geometric area of 2.5 cm<jats:sup>2</jats:sup>. The electrodes were fabricated and studied regarding the amount of catalyst and 35 % Teflonized Vulcan XC-72R. Electrochemical studies were carried out for phenol oxidation in an aqueous solution in model electrolyte: phenol solution 200 mg.L<jats:sup>-1</jats:sup> and supporting electrolyte: 18 g.L<jats:sup>-1</jats:sup> NaCl and 2.6 mg.L<jats:sup>-1</jats:sup> Na<jats:sub>2</jats:sub>SO<jats:sub>4</jats:sub>.</jats:p>

Topics

• nanoparticle
• Deposition
• pore
• surface
• Carbon
• nickel
• scanning electron microscopy
• x-ray diffraction
• composite
• Energy-dispersive X-ray spectroscopy
• Manganese