Jump to main content
Jump to site search

Issue 34, 2013
Previous Article Next Article

Surface photovoltage phase spectra for analysing the photogenerated charge transfer and photocatalytic activity of ZnFe2O4–TiO2 nanotube arrays

Author affiliations

Abstract

The transfer properties of the photogenerated charge carriers in TiO2 nanotube arrays (TNAs) and ZnFe2O4 modified TiO2 nanotube arrays (ZFO–TNAs) were investigated by surface photovoltage phase spectra. The modification of ZnFe2O4 on TNAs will lead to a new process of photogeneration of charge carriers. When irradiated with UV or visible light, before ZnFe2O4 modification photogenerated holes can transfer to the surface of TNAs; while after ZnFe2O4 modification, a process of photogenerated electrons transferring to the surface occurred. The different detected photogenerated charge transfer processes agree well with the photocatalytic reduction of Cr(VI) and the degradation of methyl orange experiments, which confirmed that the photogenerated holes transferring to the surface of the TNAs or ZFO–TNAs were beneficial for the reactions of photocatalytic reduction and electrons transferring to the surface were beneficial for photocatalytic degradation.

Graphical abstract: Surface photovoltage phase spectra for analysing the photogenerated charge transfer and photocatalytic activity of ZnFe2O4–TiO2 nanotube arrays

Back to tab navigation

Supplementary files

Publication details

The article was received on 01 May 2013, accepted on 19 Jun 2013 and first published on 21 Jun 2013


Article type: Paper
DOI: 10.1039/C3CP51850G
Phys. Chem. Chem. Phys., 2013,15, 14262-14269

  •   Request permissions

    Surface photovoltage phase spectra for analysing the photogenerated charge transfer and photocatalytic activity of ZnFe2O4–TiO2 nanotube arrays

    L. Chen, S. Li, Z. Liu, Y. Lu, D. Wang, Y. Lin and T. Xie, Phys. Chem. Chem. Phys., 2013, 15, 14262
    DOI: 10.1039/C3CP51850G

Search articles by author

Spotlight

Advertisements