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Issue 53, 2014
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NiO nanostructures: synthesis, characterization and photocatalyst application in dye wastewater treatment

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Abstract

Nickel oxide (NiO) nanostructures have been prepared via a thermal decomposition method. Nanostructures were prepared by calcining β-Ni(OH)2 at various temperatures. H2(pnAA2), 1,3-propylenediamine, nickel nitrate, NaOH and acetyl acetonate were applied as starting reagents to fabricate the NiO nanostructures. The band gap was 2.83 eV, confirming the semi-conductive nature of the prepared NiO nanostructures and indicating its potential as a photocatalyst in effluent treatment. UV irradiation times, quantity of catalyst, pH and dye concentration were investigated by degrading Rhodamine B (RB, C28H31N2O3Cl) dye. These crucial factors indicated that the NiO nanostructures are an effective photocatalyst. Kinetic investigations of photodegradation revealed that the reactions followed the improved Langmuir–Hinshelwood model. The as-produced nanostructures were characterized using XRD, FESEM, FT-IR, UV-vis, VSM and BET.

Graphical abstract: NiO nanostructures: synthesis, characterization and photocatalyst application in dye wastewater treatment

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Article information


Submitted
27 Mar 2014
Accepted
29 May 2014
First published
29 May 2014

RSC Adv., 2014,4, 27654-27660
Article type
Paper

NiO nanostructures: synthesis, characterization and photocatalyst application in dye wastewater treatment

F. Motahari, M. R. Mozdianfard, F. Soofivand and M. Salavati-Niasari, RSC Adv., 2014, 4, 27654
DOI: 10.1039/C4RA02697G

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