BEHNAM BARIKBIN
Articles written in Bulletin of Materials Science
Volume 44 All articles Published: 5 October 2021 Article ID 0258
HADIGHEH DORRI ALI ZERAATKAR MOGHADDAM EBRAHIM GHIAMATI BEHNAM BARIKBIN
Magnetic MnO$_2$ nanocomposites with flower-like and wire-like morphologies were synthesized, characterized and
well applied for degradation of methyl orange, as model acidic azo dye, from aqueous media. The characterization
studies showed the successful formation of the proposed nanocomposites with desirable properties. In addition, the
surface properties of the nanocomposite were enhanced by MnO$_2$ modification, creating more efficient reaction sites for
dye degradation. The effects of different factors such as initial pH, dye concentration, contact time, nanocomposite
dosage, stirring rate, type and amount of scavenger in degradation efficiency are investigated using experimental design.
The degradation efficiencies of nanocomposites with flower-like were higher than its wire-like morphology, and under
optimum conditions (i.e., pH 5, catalyst dose 1.5 g l$^{–1}$, hole scavenger 0.15% (w/v), time 30 min, dye concentration
400 ppm, under stirring rate 300 rpm) degradation efficiencies above 99% were achieved. The kinetics, isotherm and
thermodynamic studies for dye degradation process using the proposed nanocomposites were perused. Negative ${\Delta}$
Volume 45, 2022
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Prof. Subi Jacob George — Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru
Chemical Sciences 2020
Prof. Surajit Dhara — School of Physics, University of Hyderabad, Hyderabad
Physical Sciences 2020
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