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Electrospun SrTiO3 nanofibers for photocatalytic hydrogen generation

Published online by Cambridge University Press:  23 September 2013

Lea Macaraig ,
Surawut Chuangchote  and
Takashi Sagawa
Lea Macaraig
Affiliation:
Graduate School of Energy Science, Kyoto University, Yoshida-honmachi, Sakyo-ku, 606-8501 Kyoto, Japan
Surawut Chuangchote
Affiliation:
The Joint Graduate School of Energy and Environment, King Mongkut University of Technology Thonburi, Bangmod, Tungkru, 10140 Bangkok, Thailand
Takashi Sagawa*
Affiliation:
Graduate School of Energy Science, Kyoto University, Yoshida-honmachi, Sakyo-ku, 606-8501 Kyoto, Japan
*
a)Address all correspondence to this author. e-mail: [email protected]
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Abstract

Homogenous strontium titanate (SrTiO3) nanofibers were prepared via the electrospinning of precursor solutions containing both strontium and titanium salts. Photocatalytic activities of these SrTiO3 nanofibers for hydrogen generation from water were examined and compared to that of SrTiO3 nanoparticles. The nanofibers calcined at 700 °C showed the highest photocatalytic activity of 167 μmol/h/g among the SrTiO3 samples tested. The high activity was attributed to the ideal stoichiometric ratio of Ti/Sr, small crystallite size, high crystallinity, mesoporous structure, large surface area, and appropriate energy gap. These were confirmed through field emission scanning electron microscopic with energy dispersive spectroscopic observations, x-ray diffraction patterns, N2 gas absorption–desorption isotherm measurements, photoelectron yield spectroscopy in air, and UV-visible spectrophotometry.

Keywords

nanostructurecatalyticH
Type
Articles
Information
Journal of Materials Research , Volume 29 , Issue 1: Focus Issue: Synthesis of Nanostructured Functional Oxides , 14 January 2014 , pp. 123 - 130
Copyright
Copyright © Materials Research Society 2013 

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References

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