Hydrogen has been identified as a potential energy carrier due to its high
energy capacity and environmental harmlessness. Compared with hydrogen
production from hydrocarbons such as methane and naphtha in a conventional
hydrogen energy system, photocatalytic hydrogen evolution from water splitting
offers a more economic approach since it utilizes the abundant solar irradiation as
energy source and water as initial reactant. Powder photocatalyst, which generates
electrons and holes under illumination, is the origin where the overall reaction
happens. High solar energy conversion efficiency especially from visible range is
commonly the target. Besides, cocatalyst for hydrogen and oxygen evolution is also
playing an essential role in facilitating the charge separation and enhancing the
kinetics.
In this thesis, the objective is to achieve high energy conversion efficiency
towards water splitting from diverse aspects. The third chapter focuses on a
controllable method to fabricate metal pattern, which is candidate for hydrogen
evolution cocatalyst while chapter 4 is on the combination of strontium titanium
oxide (SrTiO3) with graphene oxide (GO) for a better photocatalytic performance. In
the last chapter, photoelectrochemical water splitting by Ta3N5 photoanode and
FeOOH as a novel oxygen evolution cocatalyst has been investigated.
| Identifer | oai:union.ndltd.org:kaust.edu.sa/oai:repository.kaust.edu.sa:10754/255086 |
| Date | 12 1900 |
| Creators | Deng, Xiaohui |
| Contributors | Takanabe, Kazuhiro, Physical Science and Engineering (PSE) Division, Han, Yu, Lai, Zhiping |
| Source Sets | King Abdullah University of Science and Technology |
| Language | English |
| Detected Language | English |
| Type | Thesis |
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