Release Time:2019-03-09  Hits:

Indexed by: Journal Article

Date of Publication: 2009-05-01

Journal: ACTA MATERIALIA

Included Journals: SCIE

Volume: 57

Issue: 9

Page Number: 2684-2690

ISSN: 1359-6454

Key Words: ZnFe2O4; Nanotube; Template synthesis; Photovoltaic properties; Quantum confinement effects

Abstract: Highly ordered ZnFe2O4 nanotube arrays were successfully prepared using porous anodic aluminum oxide (AAO) template from sol-gel Solution. The ZnFe2O4 nanotubes are orderly arranged in parallel and each nanotube is composed of many agglutinating nanoparticles. The UV-vis absorption and surface photovoltage spectra of the ZnFe2O4 nanotubes and gel powders have been compared. The photovoltaic response threshold of the ZnFe2O4 nanotubes exhibited a blue-shift of about 150 nm with respect to that of the ZnFe2O4 gel powder, which implies that the photogenerated charges in the nanotubes have a higher redox activity than that of the gel powder. Both materials behave like a p-type semiconductor with photogenerated electrons accumulated at their surface. (C) 2009 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.