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Hydrothermal Growth of Vertically Aligned ZnO Nanorods Using a Biocomposite Seed Layer of ZnO Nanoparticles
Physical Electronics and Nanotechnology Division, Department of Science and Technology, Campus Norrköping, Linköping University, SE-60174 Norrköping, Sweden
Department of Physics, Chemistry, and Biology (IFM), Linköping University, 58183 Linköping, Sweden
Physics and Astronomy Department, College of Science, King Saud University, 11451 Riyadh, Saudi Arabia
Research Chair for Laser Diagnosis of Cancer, King Saud University, 11451 Riyadh, Saudi Arabia
King Abdullah Institute for Nanotechnology, King Saud University, 11451 Riyadh, Saudi Arabia
* Author to whom correspondence should be addressed.
Received: 22 July 2013; in revised form: 24 July 2013 / Accepted: 8 August 2013 / Published: 19 August 2013
Abstract: Well aligned ZnO nanorods have been prepared by a low temperature aqueous chemical growth method, using a biocomposite seed layer of ZnO nanoparticles prepared in starch and cellulose bio polymers. The effect of different concentrations of biocomposite seed layer on the alignment of ZnO nanorods has been investigated. ZnO nanorods grown on a gold-coated glass substrate have been characterized by X-ray diffraction (XRD) and field emission scanning electron microscopy (FESEM) techniques. These techniques have shown that the ZnO nanorods are well aligned and perpendicular to the substrate, and grown with a high density and uniformity on the substrate. Moreover, ZnO nanorods can be grown with an orientation along the c-axis of the substrate and exhibit a wurtzite crystal structure with a dominant (002) peak in an XRD spectrum and possessed a high crystal quality. A photoluminescence (PL) spectroscopy study of the ZnO nanorods has revealed a conventional near band edge ultraviolet emission, along with emission in the visible part of the electromagnetic spectrum due to defect emission. This study provides an alternative method for the fabrication of well aligned ZnO nanorods. This method can be helpful in improving the performance of devices where alignment plays a significant role.
Keywords: biocomposite seed layer; ZnO nanorods; hydrothermal growth method; starch; cellulose
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MDPI and ACS Style
Ibupoto, Z.H.; Khun, K.; Eriksson, M.; AlSalhi, M.; Atif, M.; Ansari, A.; Willander, M. Hydrothermal Growth of Vertically Aligned ZnO Nanorods Using a Biocomposite Seed Layer of ZnO Nanoparticles. Materials 2013, 6, 3584-3597.
Ibupoto ZH, Khun K, Eriksson M, AlSalhi M, Atif M, Ansari A, Willander M. Hydrothermal Growth of Vertically Aligned ZnO Nanorods Using a Biocomposite Seed Layer of ZnO Nanoparticles. Materials. 2013; 6(8):3584-3597.
Ibupoto, Zafar H.; Khun, Kimleang; Eriksson, Martin; AlSalhi, Mohammad; Atif, Muhammad; Ansari, Anees; Willander, Magnus. 2013. "Hydrothermal Growth of Vertically Aligned ZnO Nanorods Using a Biocomposite Seed Layer of ZnO Nanoparticles." Materials 6, no. 8: 3584-3597.