Jump to main content
Jump to site search

Issue 36, 2013
Previous Article Next Article

Enhanced photoelectrocatalytic performance of SnO2/TiO2 rutile composite films

Author affiliations

Abstract

Ordered rutile TiO2 nanorods grown on transparent electro-conductive F-doped SnO2-coated (FTO) glass substrates were prepared by a simple hydrothermal method using tetrabutyl titanate as the precursor and then calcined at various temperatures. The prepared SnO2/TiO2 composite film samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and X-ray photoelectron spectroscopy (XPS). The photoelectrocatalytic (PEC) activity was evaluated by PEC degradation of methylene blue (MB) aqueous solutions under UV-LED light irradiation. The results showed that rutile TiO2 nanorods with diameters of ca. 300–700 nm and lengths of ca. 5 μm vertically grew on the FTO substrate. The resulting rutile TiO2 arrays exhibited excellent stability upon annealing in a temperature range of 300–500 °C. The sample calcined at 400 °C exhibited the highest PEC activity due to the combined effects of several factors including its one-dimensional morphology, high crystallinity, close contact between the TiO2 nanorods and SnO2 layers, SnO2/TiO2 n–n heterojunction and the applied external electrostatic field. The proposed enhanced PEC mechanism was further confirmed by the transient photocurrent response and electrochemical impedance spectroscopy (EIS) experiments.

Graphical abstract: Enhanced photoelectrocatalytic performance of SnO2/TiO2 rutile composite films

Back to tab navigation

Publication details

The article was received on 07 Jun 2013, accepted on 27 Jun 2013 and first published on 27 Jun 2013


Article type: Paper
DOI: 10.1039/C3TA12218B
Citation: J. Mater. Chem. A, 2013,1, 10727-10735
  •   Request permissions

    Enhanced photoelectrocatalytic performance of SnO2/TiO2 rutile composite films

    J. Yu, Y. Wang and W. Xiao, J. Mater. Chem. A, 2013, 1, 10727
    DOI: 10.1039/C3TA12218B

Search articles by author

Spotlight

Advertisements