Studies on the efficient dual performance of Mn 1-x Ni x Fe 2 O 4 spinel nanoparticles in photodegradation and antibacterial activity.

Autor: Jesudoss SK; Catalysis & Nanomaterials Research Laboratory, Department of Chemistry, Loyola College (Autonomous), Chennai 600 034, India., Vijaya JJ; Catalysis & Nanomaterials Research Laboratory, Department of Chemistry, Loyola College (Autonomous), Chennai 600 034, India. Electronic address: jjvijaya78@gmail.com., Kennedy LJ; Materials Division, School of Advanced Sciences, Vellore Institute of Technology (VIT) University, Chennai Campus, Chennai 600 127, India., Rajan PI; Catalysis & Nanomaterials Research Laboratory, Department of Chemistry, Loyola College (Autonomous), Chennai 600 034, India., Al-Lohedan HA; Chemistry Department, College of Science, King Saud University, Riyadh 11451, Saudi Arabia., Ramalingam RJ; Chemistry Department, College of Science, King Saud University, Riyadh 11451, Saudi Arabia., Kaviyarasu K; UNESCO-UNISA Africa Chair in Nanosciences/Nanotechnology Laboratories, College of Graduate Studies, University of South Africa (UNISA), Muckleneuk Ridge, P O Box 392, Pretoria, South Africa; Nanosciences African Network (NANOAFNET), Materials Research Department (MSD), iThemba LABS-National Research Foundation (NRF), 1 Old Faure Road, 7129, P O Box 722, Somerset West, Western Cape Province, South Africa., Bououdina M; Department of Physics, College of Science, University of Bahrain, PO Box 32038, Bahrain.
Jazyk: angličtina
Zdroj: Journal of photochemistry and photobiology. B, Biology [J Photochem Photobiol B] 2016 Dec; Vol. 165, pp. 121-132. Date of Electronic Publication: 2016 Oct 08.
DOI: 10.1016/j.jphotobiol.2016.10.004
Abstrakt: The present work describes the successful synthesize of spinel magnetic ferrite Mn 1-x Ni x Fe 2 O 4 (x=0.0, 0.1, 0.2, 0.3, 0.4 & 0.5) nanoparticles via a simple microwave combustion method which was then evaluated for its photocatalytic activity in the degradation of indigo carmine (IC) synthetic dye, a major water pollutant. Our results reveal that the synthesized of Ni 2+ doped MnFe 2 O 4 nanoparticles possess well-crystalline pure cubic spinel phase, exhibit excellent optical and magnetic properties. Further, the photocatalytic performance of the synthesized nanoparticles at different concentration ratios of Ni 2+ ions was monitored by photocatalytic degradation of indigo carmine synthetic dye under UV (λ=365nm) light irradiation. In order to get maximum photocatalytic degradation (PCD) efficiency, we have optimized various parameters, which include catalyst dosage, initial dye concentration, pH and Ni 2+ dopant content. It was found that the reaction was facilitated with optimum catalyst dose of 50mg/100mL, high dye concentrations of 150mg/L and acidic pH and among all the synthesized samples, Mn 0·5 Ni 0.5 Fe 2 O 4 exhibit superior performance of photocatalytic activity on the degradation of indigo carmine synthetic dye. These results highlighted the potential use of effective, low-cost and easily available photocatalysts for the promotion of wastewater treatment and environmental remediation. In addition, the antibacterial activity of spinel magnetic Mn 1-x Ni x Fe 2 O 4 nanoparticles against two Gram positive bacteria (Staphylococcus aureus and Bacillus subtilis) and two Gram negative bacteria (Pseudomonas aeruginosa and Escherichia coli) was also examined. Our antibacterial activity results are comparable with the results obtained using the antibiotic, streptomycin.
(Copyright © 2016 Elsevier B.V. All rights reserved.)
Databáze: MEDLINE
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