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Lee, Jae Sung
Eco-friendly Catalysis and Energy Lab
Research Interests
  • Photocatalytic water splitting, artificial photosynthesis, fuel cells, heterogeneous catalysis

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Effective charge separation in site-isolated Pt-nanodot deposited PbTiO3 nanotube arrays for enhanced photoelectrochemical water splitting

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Title
Effective charge separation in site-isolated Pt-nanodot deposited PbTiO3 nanotube arrays for enhanced photoelectrochemical water splitting
Author
Ahn, Chang WonBorse, Pramod H.Kim, Ju HunKim, Jae YoungJang, Jum SukCho, Chae-RyongYoon, Jang-HeeLee, Byoung-seobBae, Jong-SeongKim, Hyun GyuLee, Jae Sung
Keywords
Photoelectrochemical water splitting;  Nanotube arrays;  PbTiO3;  Electron-hole separation;  Site isolation
Issue Date
201805
Publisher
ELSEVIER SCIENCE BV
Citation
APPLIED CATALYSIS B-ENVIRONMENTAL, v.224, no., pp.804 - 809
Abstract
Highly uniform, self-supported PbTiO3 nanotube arrays are fabricated on a transparent conducting glass by an all solution-based, hard-templating procedure. A new concept of site-isolation has been realized by Pt-sol infiltration only in the internal core of deposited nanotube arrays and thus physically separating electron and hole reaction sites on inside and external surface of the nanotubes, respectively. The effective charge separation by the site-isolated Pt-nanodot deposited PbTiO3 nanotube photoanode leads to greatly enhanced photocurrent generation and H2 evolution efficiencies relative to those of the particulate-type photoanode or PbTiO3 nanotube without Pt infiltration in photoelectrochemical water splitting under visible light. The physical site isolation through nano-engineering of the material fabrication is expected to offer an effective strategy for preparation of high-efficiency photoelectrochemical devices.
URI
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DOI
http://dx.doi.org/10.1016/j.apcatb.2017.11.002
ISSN
0926-3373
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