Eur. Phys. J. D 52, 75-78 (2009)
https://doi.org/10.1140/epjd/e2008-00250-8

Fabrication and characterization of MoO ₃ clusters-coated TiO ₂ nanotubes showing charge-transferred photoluminescence

School of Chemistry, Seoul National University, NS60, Seoul, 151-742, Korea

Corresponding author: ^a djjang@snu.ac.kr

Received: 19 September 2008
Published online: 24 January 2009

Abstract

MoO₃ clusters-coated TiO₂ nanotubes were synthesized wet-chemically and characterized by measuring photoluminescence spectra and kinetic profiles as well as extinction spectra and electron microscope images. TiO₂ nanotubes having an average outer diameter of 30 nm and an average thickness of 8 nm are surrounded by MoO₃ clusters with an average thickness of 4 nm. The excitation of both the TiO₂ cores and the MoO₃ shells of the type-II nanocomposites suspended in water yields charge-transferred junction photoluminescence having a long lifetime of 2.3 ns at 460 nm.