Journal
MATERIALS LETTERS
Volume 172, Issue -, Pages 85-89Publisher
ELSEVIER
DOI: 10.1016/j.matlet.2016.02.076
Keywords
MnO2 nanowires; Catalytic degradation; Reactive black 5; FTIR; Structural; Nanocrystalline materials
Funding
- DST-FIST [SR/FST/PSI-187/2013]
- DST-SERB [SB/S2/CMP-105/2013]
- Ministry of Higher Education of Malaysia [UM.C/625/1/HIR/MOHE/SC/21]
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alpha-MnO2 nanowires (NWs) prepared by hydrothermal method are characterized using XRD and FT-IR. The crystallite size, surface area of NWs increases, whereas dislocation density and band gap decreases with an increase in oxidizer molarity. The band gap decreases from 2.55 to 1.27 eV. The above observations correlate well with the enhanced catalytic activity of MnO2 NWs for degradation of azo dye reactive black 5 (RB5). About 70% of the dye were successfully removed in 60 min using 20 mg of MnO2 NWs in the presence of 6 mL of H2O2. MnO2 NWs show a good reusability, suggesting it as an effective and recyclable catalyst. (C) 2016 Elsevier B.V. All rights reserved.
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