The objective of present thesis is to prepare and evaluate photocatalyst for
hydrogen generation from water methanol mixture using solar light.
This general objective has been accomplished by applying different methodology
in material preparation as well as exploring the photocatalytic activity of novel
semiconductors.
In this way after a general introduction to the feed showing the relevance of solar
fuels and in particular hydrogen generation, the focus of chapter 3 is, on the other
and, to optimize the nature of the cocatalyst based on noble metals. In this way AuPt
alloy nanoparticles with different composition will be deposited on p25 and
they activity correlated with the irradiation wavelength and nature of the alloy.
In chapter 4 and 5 we evaluate the photocatalytic activity of materials derived
from titanate nanotubes either by hydrogen annealing ad various temperature
(chapter 4) or by forming heterojunction with a combination of titania
nanoparticles (chapter 5).
The two final chapter of this thesis report the semiconductor behaviour and the
photocatalytic activity of framework phosphate either mixed valence titanium
III/IV (chapter 6) or iron (chapter 7) doped with various metal.
The overall results achieved show that is possible to increase the photocatalytic
activity of titanium-based materials by apply concept like control of morphology,
amorphization of surface of particles, formation of heterojunction and control of
the cocatalyst. We have also shows behind oxide, framework phosphate can also be
valuable as photocatalysts. / Serra, M. (2015). Photocatalyst based on titanium or iron semiconductors for the generation of hydrogen from water upon solar irradiation [Tesis doctoral no publicada]. Universitat Politècnica de València. https://doi.org/10.4995/Thesis/10251/48542 / TESIS
| Identifer | oai:union.ndltd.org:upv.es/oai:riunet.upv.es:10251/48542 |
| Date | 05 March 2016 |
| Creators | Serra, Marco |
| Contributors | Atienzar Corvillo, Pedro Enrique, García Gómez, Hermenegildo, Universitat Politècnica de València. Instituto Universitario Mixto de Tecnología Química - Institut Universitari Mixt de Tecnologia Química |
| Publisher | Universitat Politècnica de València |
| Source Sets | Universitat Politècnica de València |
| Language | English |
| Detected Language | English |
| Type | info:eu-repo/semantics/doctoralThesis, info:eu-repo/semantics/acceptedVersion |
| Rights | http://rightsstatements.org/vocab/InC/1.0/, info:eu-repo/semantics/openAccess |
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