PHOTOCATALYTIC ACTIVITY AND PHOTOCURRENT PROPERTIES OFTiO2NANOTUBE ARRAYS INFLUENCED BY CALCINATION TEMPERATURE AND TUBE LENGTH

Jian Hou, Min Zhang (), Guotian Yan and Jianjun Yang ()
Additional contact information
Jian Hou: Key Laboratory for Special Functional Materials of Ministry of Education, Henan University, Kaifeng 475004, P. R. China
Min Zhang: Key Laboratory for Special Functional Materials of Ministry of Education, Henan University, Kaifeng 475004, P. R. China
Guotian Yan: Key Laboratory for Special Functional Materials of Ministry of Education, Henan University, Kaifeng 475004, P. R. China
Jianjun Yang: Key Laboratory for Special Functional Materials of Ministry of Education, Henan University, Kaifeng 475004, P. R. China

Surface Review and Letters (SRL), 2012, vol. 19, issue 03, 1-8

Abstract: In this article, titanium oxide nanotube arrays(TiO2–NTAs)were fabricated by anodic oxidation in an ethylene glycol (EG) electrolyte solution containing 0.25 wt.% NH4F. By varying anodized time and annealed temperature, the obtained nanotube arrays behaved different photocatalytic (PC) activities and photocurrent properties. These samples were characterized by scanning electronic microscope (SEM), X-ray powder diffraction (XRD). It was indicated in SEM images thatTiO2nanotube manifests highly ordered structure which, however, has been completely destroyed when the temperature comes to 800°C. XRD manifested thatTiO2nanotubes with various kinds of length all possessed anatase crystallite when annealed at 500°C; meanwhile, with certain length,TiO2–NTAsannealed at series calcination temperature range of 300–600°C also presented anatase crystallite, which is gradually enhanced with the increment of temperature. At 700°C, mixed structure was observed which was made up of proportions of overwhelming anatase and toothful rutile. Methyl blue (MB) degradation and photocurrent measurement testified thatTiO2–NTAsunder 4 h oxidation and 3 h of 600°C calcination manifested the highest activity and photocurrent density.

Keywords: Anodization; TiO2nanotube arrays; photocatalytic activity; photocurrent (search for similar items in EconPapers)
Date: 2012
References: View complete reference list from CitEc
Citations:

Downloads: (external link)
http://www.worldscientific.com/doi/abs/10.1142/S0218625X12500230
Access to full text is restricted to subscribers

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:wsi:srlxxx:v:19:y:2012:i:03:n:s0218625x12500230

Ordering information: This journal article can be ordered from

DOI: 10.1142/S0218625X12500230

Access Statistics for this article

Surface Review and Letters (SRL) is currently edited by S Y Tong

More articles in Surface Review and Letters (SRL) from World Scientific Publishing Co. Pte. Ltd.
Bibliographic data for series maintained by Tai Tone Lim ().