Research Update: Strategies for efficient photoelectrochemical water splitting using metal oxide photoanodes
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- Research Update: Strategies for efficient photoelectrochemical water splitting using metal oxide photoanodes
- Cho, Seungho; Jang, Ji-Wook; Lee, Kun-Hong; Lee, Jae Sung
- TIO2 NANOTUBE ARRAYS; OXYGEN-EVOLVING CATALYST; VISIBLE-LIGHT PHOTOCATALYSIS; SOLAR HYDROGEN GENERATION; ZNO NANOWIRE ARRAYS; THIN-FILMS; ENERGY-CONVERSION; PHOTONIC CRYSTAL; HETEROJUNCTION PHOTOANODE; HEMATITE PHOTOANODES
- Issue Date
- AMER INST PHYSICS
- APL MATERIALS, v.2, no.1, pp.010703 -
- Photoelectrochemical (PEC) water splitting to hydrogen is an attractive method for capturing and storing the solar energy in the form of chemical energy. Metal oxides are promising photoanode materials due to their low-cost synthetic routes and higher stability than other semiconductors. In this paper, we provide an overview of recent efforts to improve PEC efficiencies via applying a variety of fabrication strategies to metal oxide photoanodes including (i) size and morphology-control, (ii) metal oxide heterostructuring, (iii) dopant incorporation, (iv) attachments of quantum dots as sensitizer, (v) attachments of plasmonic metal nanoparticles, and (vi) co-catalyst coupling. Each strategy highlights the underlying principles and mechanisms for the performance enhancements.
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