A comparative study of spinel structured Mn3O4, Co3O4 and Fe3O4 nanoparticles in catalytic oxidation of phenolic contaminants in aqueous solutions
Access Status
Authors
Date
2013Type
Metadata
Show full item recordCitation
Source Title
ISSN
Remarks
NOTICE: This is the author’s version of a work that was accepted for publication in Journal of Colloid and Interface Science. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in International Journal of Colloid and Interface Science, Vol. 407 (2013). http://doi.org/10.1016/j.jcis.2013.06.061
Collection
Abstract
Spinel structured Mn3O4, Co3O4 and Fe3O4 nanoparticles were prepared, characterized, and tested in degradation of aqueous phenol in the presence of peroxymonosulfate. It was found that Mn3O4 and Co3O4 nanoparticles are highly effective in heterogeneous activation of peroxymonosulfate to produce sulfate radicals for phenol degradation. The activity shows an order of Mn3O4 > Co3O4 > Fe3O4. Mn3O4 could fast and completely remove phenol in about 20 min, at the conditions of 25 ppm phenol, 0.4 g/L catalyst, 2 g/L oxone®, and 25 °C. A pseudo first order model would fit to phenol degradation kinetics and activation energies on Mn3O4 and Co3O4 were obtained as 38.5 and 66.2 kJ/mol, respectively. In addition, Mn3O4 exhibited excellent catalytic stability in several runs, demonstrating that Mn3O4 is a promising catalyst alternative to toxic Co3O4 for water treatment.
Related items
Showing items related by title, author, creator and subject.
-
Shukla, Pradeep; Wang, Shaobin; Ang, Ming; Tade, Moses (2010)Photocatalytic degradation of phenolic compounds in aqueous solution was investigated in TiO2/persulphate/UV–vis and ZnO/persulphate/UV–vis light. It is found that ZnO exhibits higher activity than TiO2 in photocatalytic ...
-
Muhammad, Syaifullah; Shukla, Pradeep; Tade, Moses; Wang, Shaobin (2012)Activated carbon (AC) and Zeolite Socony Mobil-5 (ZSM5) supported ruthenium oxide catalysts were prepared and tested to degrade aqueous phenol in the presence of peroxymonosulphate. The physicochemical properties of ...
-
Saputra, Edy; Muhammad, Syaifullah; Sun, Hongqi; Wang, Shaobin (2013)Several activated carbons (ACs) were used as metal-free catalysts for degradation of a toxic organiccompound, phenol, in the presence of different oxidants, H2O2, peroxydisulfate (PS) and peroxymonosulfate (PMS). It was ...