Please use this identifier to cite or link to this item:
https://hdl.handle.net/2440/100631
Citations | ||
Scopus | Web of Science® | Altmetric |
---|---|---|
?
|
?
|
Type: | Journal article |
Title: | Iron oxide nanowires from bacteria biofilm as an edfficient visible-light magnetic photocatalyst |
Author: | Wang, L. Kumeria, T. Santos, A. Forward, P. Lambert, M. Losic, D. |
Citation: | ACS Applied Materials and Interfaces, 2016; 8(31):20110-20119 |
Publisher: | American Chemical Society |
Issue Date: | 2016 |
ISSN: | 1944-8244 1944-8252 |
Statement of Responsibility: | Luoshan Wang, Tushar Kumeria, Abel Santos, Peter Forward, Martin F. Lambert, and Dusan Losic |
Abstract: | Naturally produced iron oxide nanowires by Mariprofundus ferrooxydans bacteria as biofilm are evaluated for their structural, chemical, and photocatalytic performance under visible-light irradiation. The crystal phase structure of this unique natural material presents a 1-dimensional (1D) nanowire-like geometry, which is transformed from amorphous to crystalline (hematite) by thermal annealing at high temperature without changing their morphology. This study systematically assesses the effect of different annealing temperatures on the photocatalytic activity of iron oxide nanowires produced by Mariprofundus ferrooxydans bacteria. The nanowires processed at 800 °C were the most optimal for photocatalytic applications degrading a model dye (rhodamine B) in less than an hour. These nanowires displayed excellent reusability with no significant loss of activity even after 6 cycles. Kinetic studies by using hydrogen peroxide (radical generator) and isopropyl alcohol (radical scavenger) suggest that OH• is the dominant photooxidant. These nanowires are naturally produced, inexpensive, highly active, stable, and magnetic and have the potential to be used for broad applications including environmental remediation, water disinfection, and industrial catalysis. |
Keywords: | iron oxide nanowires; bacteria biofilm; rhodamine B; visible-light photocatalysis; natural nanostructure |
Description: | Published: July 15, 2016 |
Rights: | © 2016 American Chemical Society |
DOI: | 10.1021/acsami.6b06486 |
Grant ID: | http://purl.org/au-research/grants/arc/FT110100711 |
Published version: | http://dx.doi.org/10.1021/acsami.6b06486 |
Appears in Collections: | Aurora harvest 3 IPAS publications |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
hdl_100631.pdf | Accepted version | 2.26 MB | Adobe PDF | View/Open |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.