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Hierarchical nanowire arrays based on carbon nanotubes and Co3O4 decorated ZnO for enhanced photoelectrochemical water oxidation
Title: | Hierarchical nanowire arrays based on carbon nanotubes and Co3O4 decorated ZnO for enhanced photoelectrochemical water oxidation |
Authors: | Li, Mu Browse this author | Chang, Kun Browse this author | Wang, Tao Browse this author | Liu, Lequan Browse this author | Zhang, Huabin Browse this author | Li, Peng Browse this author | Ye, Jinhua Browse this author →KAKEN DB |
Issue Date: | 14-Jul-2015 |
Publisher: | Royal Society of Chemistry (RSC) |
Journal Title: | Journal of Materials Chemistry A |
Volume: | 3 |
Issue: | 26 |
Start Page: | 13731 |
End Page: | 13737 |
Publisher DOI: | 10.1039/c5ta02901e |
Abstract: | A highly enhanced activity for photoelectrochemical water splitting was achieved by fabricating carbon nanotube (CNT) and Co3O4 decorated hierarchical ZnO nanowire (NW) arrays via a facile stepwise synthesis strategy. The ternary CNT-ZnO-Co3O4 NW composite exhibits an increased photocurrent density (1.9 mA cm(-2) at 0.6 V vs. Ag/AgCl, 2.7 times larger than that of the pristine ZnO NWs) and improved incident photon to current conversion efficiency (52.5% at 340 nm, 5.1 times higher than that of the pristine ZnO NWs) as a photoanode under AM 1.5G simulated sunlight. This enhancement is attributed to the specific heterogeneous ternary architecture, which results in promoted electron-hole charge separation and transfer, decreased water oxidation overpotential as well as increased reaction rates of water splitting by decorating ZnO NWs with CNTs and Co3O4. |
Type: | article (author version) |
URI: | http://hdl.handle.net/2115/62389 |
Appears in Collections: | 総合化学院 (Graduate School of Chemical Sciences and Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 葉 金花
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