Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/102280
Title: Understanding the role of nanostructures for efficient hydrogen generation on immobilized photocatalysts
Authors: Jiang, Zhelong
Tang, Yuxin
Tay, Qiuling
Zhang, Yanyan
Malyi, Oleksandr I.
Wang, Danping
Deng, Jiyang
Lai, Yuekun
Zhou, Huanfu
Chen, Xiaodong
Dong, Zhili
Chen, Zhong
Keywords: DRNTU::Engineering::Materials
Issue Date: 2013
Source: Jiang, Z., Tang, Y., Tay, Q., Zhang, Y., Malyi, O. I., Wang, D., et al. (2013). Understanding the role of nanostructures for efficient hydrogen generation on immobilized photocatalysts. Advanced energy materials, 3(10), 1368-1380.
Series/Report no.: Advanced energy materials
Abstract: For the purpose of efficiently utilizing the renewable solar energy, it is of vital importance to understand the key factors that contribute to the performance merits for photocatalysis applications. In this work, we find that anatase titania nanostructures with high efficiency in photoelectrochemical cell (PEC) do not necessarily retain the same good performance when used in direct heterogeneous reaction (DHR). Investigation is carried out to elucidate how the electronic properties of the different nanostructures are correlated with the PEC and DHR efficiencies. Good PEC cell performance is identified to be related to topotactically formed samples with intimately connected particles that facilitate easy charge transfer. Additional benefit for PEC cell is found to be achieved from the vectorial conduction pathway in the pseudo one dimensional structure. On the other hand, high activity of DHR photocatalysis is attributed mainly to the exposed high reactivity crystal facets. The presence of anatase TiO2 {010} facets is identified to enhance electron-hole separation and create specific surface states that facilitate interactions across the semiconductor/electrolyte interfaces.
URI: https://hdl.handle.net/10356/102280
http://hdl.handle.net/10220/16834
ISSN: 1614-6832
DOI: 10.1002/aenm.201300380
Fulltext Permission: none
Fulltext Availability: No Fulltext
Appears in Collections:MSE Journal Articles

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