Next Article in Journal
Utilizing Downdraft Fixed Bed Reactor for Thermal Upgrading of Sewage Sludge as Fuel by Torrefaction
Next Article in Special Issue
Nanostructured Ceramic Photocatalytic Membrane Modified with a Polymer Template for Textile Wastewater Treatment
Previous Article in Journal
Optimal Cluster Expansion-Based Intrusion Tolerant System to Prevent Denial of Service Attacks
Article Menu
Issue 11 (November) cover image

Export Article

Open AccessArticle
Appl. Sci. 2017, 7(11), 1185; https://doi.org/10.3390/app7111185

Enhanced Photocatalytic Activity of Iron-Doped ZnO Nanowires for Water Purification

ESYCOM, Université Paris-Est, UPEM, 5 Boulevard Descartes, F- 77420 Champs sur Marne, France
*
Author to whom correspondence should be addressed.
Received: 2 October 2017 / Revised: 14 November 2017 / Accepted: 14 November 2017 / Published: 17 November 2017
(This article belongs to the Special Issue Nanotechnology in Wastewater Treatment Technology)
Full-Text   |   PDF [3883 KB, uploaded 17 November 2017]   |  

Abstract

In order to improve the photocatalytic efficiency of ZnO nanowires, iron-doped ZnO nanowires (ZnO:Fe NWs) were successfully synthesized. The morphology, optical properties and photocatalytic performance of ZnO:Fe NWs were studied by scanning electron microscopy (SEM), UV-Visible spectrophotometry and photoluminescence spectroscopy (PL), respectively. The SEM observations showed that the morphology of the ZnO NWs was not modified by iron doping, but the band gap was reduced from 3.29 eV for ZnO NWs to 3.25 eV for ZnO:Fe NWs. This band gap reduction allows the semiconductor to harvest more photons to excite more electrons in the valence band; subsequently, resulting in an improvement of the degradability of the understudied organic dyes: methylene blue (MB), methyl orange (MO), and acid red 14 (AR14). The photocatalytic study showed that the photo-degradation rate of the MB, MO, and AR14 was improved 9%, 20%, and 5% respectively by 1% iron doping in the ZnO NWs. View Full-Text
Keywords: ZnO nanowires; iron doping; water purification; photocatalysis ZnO nanowires; iron doping; water purification; photocatalysis
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
SciFeed

Share & Cite This Article

MDPI and ACS Style

Habba, Y.G.; Capochichi-Gnambodoe, M.; Leprince-Wang, Y. Enhanced Photocatalytic Activity of Iron-Doped ZnO Nanowires for Water Purification. Appl. Sci. 2017, 7, 1185.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Appl. Sci. EISSN 2076-3417 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top