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Materials for Solar Energy
Conversion Research in the
lab involves the preparation and characterization of inorganic (nano-)
materials and their application to solar energy conversion and artificial
photosynthesis. In one project we develop inorganic materials as
photocatalysts for the overall water splitting reaction - a method to convert
solar energy into hydrogen fuel. The project involves the preparation of
inorganic particles with smooth facets and their modification with surface
coatings and cocatalysts. |
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In another project
we employ surface photovoltage spectroscopy for the characterization of
photochemical charge separation in molecular, semiconducting polymeric, and
inorganic light absorbers. The goal is to better understand photochemical
charge generation and separation at interfaces. These results are relevant to
the development of next generation photovoltaic cells and photocatalysts for
the production of carbon-free fuels from solar energy. As methods we
use liquid-phase and solid-state syntheses, incl. hydrothermal synthesis, and
film deposition methods, incl. spin- and drop-coating. For physical
characterization we employ electron microscopy, powder X-ray diffraction
(XRD), X-ray photoelectron spectroscopy, optical spectroscopy,
electrochemistry, photoelectrochemistry, surface photovoltage spectroscopy,
zeta-potential measurements, and gas chromatography for H2/O2 detection. Our research is
supported by grants from the National
Science Foundation and from the Office of Basic Science of the US Department of Energy. Follow us
on Google
Scholar or Twitter or visit us on Facebook or
on Researchgate |
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References 1. Zhao, J. and F.E. Osterloh, Photochemical Charge Separation in
Nanocrystal Photocatalyst Films – Insights from Surface Photovoltage
Spectroscopy. J. Phys. Chem. Lett, 2014,
5, 782–786. http://dx.doi.org/10.1021/jz500136h 2. Han, R., M.A. Melo Jr, Z. Zhao, Z. Wu, and F.E. Osterloh,
Light Intensity Dependence of Photochemical Charge Separation in the
BiVO4/Ru-SrTiO3:Rh Direct Contact Tandem Photocatalyst for Overall Water
Splitting. The Journal of Physical Chemistry C, 2020. 124: p.
9724-9733. https://doi.org/10.1021/acs.jpcc.0c00772
3. Doughty, R.M., F.A. Chowdhury, Z. Mi, and F.E. Osterloh,
Surface photovoltage spectroscopy observes junctions and carrier separation
in gallium nitride nanowire arrays for overall water-splitting. The Journal
of Chemical Physics, 2020. 153(14): p. 144707. https://doi.org/10.1063/5.00212734 4. Zhao, Z., R.V. Goncalves, S.K. Barman, E.J. Willard, E. Byle,
R. Perry, Z. Wu, M.N. Huda, A.J. Moulé, and F.E. Osterloh, Electronic
structure basis for enhanced overall water splitting photocatalysis with
aluminum doped SrTiO3 in natural sunlight. Energy & Environmental
Science, 2019. 12: p. 1385-1395. https://doi.org/10.1039/C9EE00310J
5. Osterloh, F.E., Chapter 7 Artificial
Photosynthesis with Inorganic Particles, in Integrated Solar Fuel Generators.
2019, The Royal Society of Chemistry. p. 214-280, http://dx.doi.org/10.1039/9781788010313-00214
6. Osterloh,
F.E., Inorganic Nanostructures for Photoelectrochemical and Photocatalytic
Water Splitting. Chem. Soc. Rev., 2013. 42(6): p. 2294-2320. https://doi.org/10.1039/c2cs35266d
3. Osterloh,
F.E., Inorganic Materials as Catalysts for Photochemical Splitting of Water.
Chemistry of Materials, 2008. 20(1): p. 35-54. https://doi.org/10.1021/cm7024203 |
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