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Issue 45, 2013
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Nanoscale surface potential imaging of the photocatalytic TiO2 films on aluminum

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Abstract

The change in the surface potential of TiO2 coatings upon UV-illumination was investigated on the nanoscale using Scanning Kelvin Probe Force microscopy and on the micro-scale using photo-electrochemical measurements. A good correlation between the two techniques was obtained. The changes in the surface potential of TiO2 coatings upon UV-illumination are closely correlated to the band gap and thickness of the coatings. The inhomogeneity surface potential distribution of a 100 nm TiO2 film indicates a heterogeneous coating. Transition to a homogeneous surface potential distribution was observed with increasing thickness of the TiO2 coating.

Graphical abstract: Nanoscale surface potential imaging of the photocatalytic TiO2 films on aluminum

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Publication details

The article was received on 19 Jun 2013, accepted on 23 Sep 2013 and first published on 25 Sep 2013


Article type: Paper
DOI: 10.1039/C3RA43082K
Citation: RSC Adv., 2013,3, 23296-23302
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    Nanoscale surface potential imaging of the photocatalytic TiO2 films on aluminum

    S. Daviðsdóttir, K. Dirscherl, S. Canulescu, R. Shabadi and R. Ambat, RSC Adv., 2013, 3, 23296
    DOI: 10.1039/C3RA43082K

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