Growth of ZnO Nanorods on Stainless Steel Wire Using Chemical Vapour Deposition and Their Photocatalytic Activity

The photodegradation efficiency of ZnO nanoparticles in removal of organic pollutants deteriorates over time as a high percentage of the nanoparticles can be drained away by water during the wastewater treatment. This problem can be solved by growing the ZnO nanorods on stainless steel wire. In this...

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Bibliographic Details
Published in:TheScientificWorld 2014-01, Vol.2014 (2014), p.1-9
Main Authors: Lockman, Zainovia, Ramli, Nurul Najiah, Pung, Swee-Yong, Abd Aziz, Siti Nor Qurratu Aini
Format: Article
Language:English
Subjects:
Aqueous solutions
Chemical properties
Chemical vapor deposition
Dyes
Free radicals
Mineral resources
Molecular beam epitaxy
Nanomaterials
Nanotubes - chemistry
Optical properties
Oxidation-Reduction
Photocatalysis
Photochemical Processes
Photodegradation
Pollutant removal
Rhodamines - chemistry
Stainless steel
Stainless Steel - chemistry
Steel wire
Steel, Stainless
Wastewater treatment
Wire
Zinc oxide
Zinc Oxide - chemistry
Zinc oxides
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Summary:The photodegradation efficiency of ZnO nanoparticles in removal of organic pollutants deteriorates over time as a high percentage of the nanoparticles can be drained away by water during the wastewater treatment. This problem can be solved by growing the ZnO nanorods on stainless steel wire. In this work, ZnO nanorods were successfully grown on stainless steel wire by chemical vapour deposition. The SAED analysis indicates that ZnO nanorod is a single crystal and is preferentially grown in [0001] direction. The deconvoluted O 1s peak at 531.5 eV in XPS analysis is associated with oxygen deficient, revealing that the ZnO nanorods contain many oxygen vacancies. This observation is further supported by the finding of the small I uv / I vis ratio, that is, ~1 in the photoluminescence analysis. The growth of ZnO nanorods on stainless steel wire was governed by vapour-solid mechanism as there were no Fe particles observed at the tips of the nanorods. The photodegradation of Rhodamine B solution by ZnO nanorods followed the first-order kinetics.
ISSN:2356-6140
1537-744X
1537-744X
DOI:10.1155/2014/252851