Journal
APPLIED SURFACE SCIENCE
Volume 427, Issue -, Pages 907-916Publisher
ELSEVIER
DOI: 10.1016/j.apsusc.2017.09.075
Keywords
PEC; Cuprous oxide; Carbon nitride; Composite; Water splitting; H-2 production
Categories
Funding
- National Natural Science Foundation of China [11204097, U1530120, 51602353]
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Solar photoelectrochemical (PEC) hydrogen production is a promising way for solving energy and environment problems. Earth-abundant Cu2O is a potential light absorber for PEC hydrogen production. In this article, hierarchical porous Cu2O foams are prepared by thermal oxidation of the electrochemically deposited Cu foams. PEC performances of the Cu2O foams are systematically studied and discussed. Benefiting from their higher light harvesting and more efficient charge separation, the Cu2O foams demonstrate significantly enhanced photocurrents and photostability compared to their film counterparts. Moreover, by integrating g-C3N4, hierarchical Cu2O foam/g-C3N4 composites are prepared with further improved photocurrent and photostability, appearing to be potential photocathodes for solar PEC hydrogen production. This study may provide a new and useful insight for the development of Cu2O-based photocathodes for PEC hydrogen production. (c) 2017 Published by Elsevier B.V.
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