Dispersion of zero valent iron nanoparticles onto bentonites and the decolourization of orange II

Xi, Yunfei, Mallavarapu, Megharaj, & Naidu, Ravendra (2011) Dispersion of zero valent iron nanoparticles onto bentonites and the decolourization of orange II. Applied Clay Science, 53(4), pp. 716-722.

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Nano Zero valent iron (Fe0) were reported as an effective material for azo dye removal, however, similar to other nano-materials, ultra-fine powder has a strong tendency to agglomerate into larger particles, resulting in an adverse effect on both effective surface area and catalyst performance. Here we report nano sized Fe0 particles dispersed onto the surface of natural bentonites. X-ray diffraction was used to study the sample phases. Scanning electron microscopy and transmission electron microscopy were applied to study the morphology and morphological changes. Spherical individual Fe0 particles were observed after dispersion onto bentonites, and these samples were used for orange II (OII) decolourization with wide working pH range. Higher reactivity is attributed to good dispersion of Fe0 particles on clay minerals’ surface. This study is significant for providing novel modified clay based catalyst materials for the decolourization of azo dye contaminants from wastewater.

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ID Code: 75098
Item Type: Journal Article
Refereed: Yes
Keywords: zero valent iron, bentonite, orange II, decolourization
DOI: 10.1016/j.clay.2011.06.010
ISSN: 0169-1317
Subjects: Australian and New Zealand Standard Research Classification > CHEMICAL SCIENCE (030000)
Australian and New Zealand Standard Research Classification > ENVIRONMENTAL SCIENCES (050000)
Divisions: Current > Schools > School of Chemistry, Physics & Mechanical Engineering
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Copyright Owner: Copyright 2011 Elsevier
Copyright Statement: This is the author’s version of a work that was accepted for publication in Applied Clay 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 Applied Clay Science, [VOL 53, ISSUE 4, (2011)] DOI: 10.1016/j.clay.2011.06.010
Deposited On: 18 Aug 2014 00:43
Last Modified: 20 Aug 2014 03:46

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