Back to Journals » International Journal of Nanomedicine » Volume 9 » Issue 1

Low-temperature growth of well-aligned zinc oxide nanorod arrays on silicon substrate and their photocatalytic application

Authors Azam A, Babkair SS

Received 16 January 2014

Accepted for publication 23 February 2014

Published 28 April 2014 Volume 2014:9(1) Pages 2109—2115

DOI https://doi.org/10.2147/IJN.S60839

Checked for plagiarism Yes

Review by Single-blind

Peer reviewer comments 6

Ameer Azam,1 Saeed Salem Babkair2

1Center of Nanotechnology, King Abdulaziz University, Jeddah, Saudi Arabia; 2Center of Nanotechnology, Department of Physics, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia

Abstract: Well-aligned and single-crystalline zinc oxide (ZnO) nanorod arrays were grown on silicon (Si) substrate using a wet chemical route for the photodegradation of organic dyes. Structural analysis using X-ray diffraction, high-resolution transmission electron microscopy, and selected area electron diffraction confirmed the formation of ZnO nanorods grown preferentially oriented in the (001) direction and with a single phase nature with a wurtzite structure. Field emission scanning electron microscopy and transmission electron microscopy micrographs showed that the length and diameter of the well-aligned rods were about ~350–400 nm and ~80–90 nm, respectively. Raman scattering spectra of ZnO nanorod arrays revealed the characteristic E2 (high) mode that is related to the vibration of oxygen atoms in the wurtzite ZnO. The photodegradation of methylene blue (MB) using ZnO nanorod arrays was performed under ultraviolet light irradiation. The results of photodegradation showed that ZnO nanorod arrays were capable of degrading ~80% of MB within 60 minutes of irradiation, whereas ~92% of degradation was achieved in 120 minutes. Complete degradation of MB was observed after 270 minutes of irradiation time. Owing to enhanced photocatalytic degradation efficiency and low-temperature growth method, prepared ZnO nanorod arrays may open up the possibility for the successful utilization of ZnO nanorod arrays as a future photocatalyst for environmental remediation.

Keywords: ZnO, nanorods, XRD, photodegradation

Creative Commons License This work is published and licensed by Dove Medical Press Limited. The full terms of this license are available at https://www.dovepress.com/terms.php and incorporate the Creative Commons Attribution - Non Commercial (unported, v3.0) License. By accessing the work you hereby accept the Terms. Non-commercial uses of the work are permitted without any further permission from Dove Medical Press Limited, provided the work is properly attributed. For permission for commercial use of this work, please see paragraphs 4.2 and 5 of our Terms.

Download Article [PDF]  View Full Text [HTML][Machine readable]

 

Other articles by this author:

Microwave-assisted synthesis of SnO2 nanorods for oxygen gas sensing at room temperature

Azam A, Habib SS, Salah NA, Ahmed F

International Journal of Nanomedicine 2013, 8:3875-3882

Published Date: 9 October 2013

Antimicrobial activity of metal oxide nanoparticles against Gram-positive and Gram-negative bacteria: a comparative study

Azam A, Ahmed AS, Oves M, Khan MS, Habib SS, Memic A

International Journal of Nanomedicine 2012, 7:6003-6009

Published Date: 5 December 2012

Size-dependent antimicrobial properties of CuO nanoparticles against Gram-positive and -negative bacterial strains

Azam A, Ahmed AS, Oves M, Khan MS, Memic A

International Journal of Nanomedicine 2012, 7:3527-3535

Published Date: 10 July 2012

Readers of this article also read:

Support for the initial attachment, growth and differentiation of MG-63 cells: a comparison between nano-size hydroxyapatite and micro-size hydroxyapatite in composites

Filová E, Suchý T, Sucharda Z, Šupová M, Žaloudková M, Balík K, Lisá V, Šlouf M, Bačáková L

International Journal of Nanomedicine 2014, 9:3687-3706

Published Date: 6 August 2014

In situ precipitation: a novel approach for preparation of iron-oxide magnetoliposomes

Xia S, Li P, Chen Q, Armah M, Ying X, Wu J, Lai J

International Journal of Nanomedicine 2014, 9:2607-2617

Published Date: 23 May 2014

Zinc oxide nanoparticles as selective killers of proliferating cells

Taccola L, Raffa V, Riggio C, Vittorio O, Iorio MC, Vanacore R, Pietrabissa A, Cuschieri A

International Journal of Nanomedicine 2011, 6:1129-1140

Published Date: 30 May 2011

Silver/poly (lactic acid) nanocomposites: preparation, characterization, and antibacterial activity

Kamyar Shameli, Mansor Bin Ahmad, Wan Md Zin Wan Yunus, et al

International Journal of Nanomedicine 2010, 5:573-579

Published Date: 6 August 2010