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Ultrathin Cobalt-Manganese Nanosheets: An Efficient Platform for Enhanced Photoelectrochemical Water Oxidation with Electron-Donating Effect
| Title: | Ultrathin Cobalt-Manganese Nanosheets: An Efficient Platform for Enhanced Photoelectrochemical Water Oxidation with Electron-Donating Effect |
| Authors: | Yang, Gaoliang Browse this author | | Li, Yunxiang Browse this author | | Pang, Hong Browse this author | | Chang, Kun Browse this author | | Ye, Jinhua Browse this author →KAKEN DB |
| Keywords: | cobalt-manganese nanosheets | | electron-donating effect | | photoelectrocatalysis | | water oxidation |
| Issue Date: | 14-Nov-2019 |
| Publisher: | Wiley-Blackwell |
| Journal Title: | Advanced Functional Materials |
| Volume: | 29 |
| Issue: | 46 |
| Start Page: | 1904622 |
| Publisher DOI: | 10.1002/adfm.201904622 |
| Abstract: | An ultrathin cobalt-manganese (Co-Mn) nanosheet, consisting of amorphous Co(OH)(x) layers and ultrasmall Mn3O4 nanocrystals, is designed as an efficient co-catalyst on an alpha-Fe2O3 film for photoelectrochemical (PEC) water oxidation. The uniformly distributed Co-Mn nanosheets lead to a remarkable 2.6-fold enhancement on the photocurrent density at 1.23 V versus reversible hydrogen electrode (RHE) and an impressive cathodic shift (approximate to 200 mV) of onset potential compared with bare alpha-Fe2O3 film. Furthermore, the decorated photoanode exhibits a prominent resistance against photocorrosion with excellent stability for over 10 h. Detailed mechanism investigation manifests that incorporation of Mn sites in the nanosheets could create electron donation to Co sites and facilitate the activation of the OH group, which drastically increases the catalytic activities for water oxidation. These findings provide valuable guidance for designing high-performance co-catalysts for PEC applications and open new avenues toward controlled fabrication of mixed metallic composites. |
| Rights: | This is the peer reviewed version of the following article: Yang, G., Li, Y., Pang, H., Chang, K., Ye, J., Ultrathin Cobalt–Manganese Nanosheets: An Efficient Platform for Enhanced Photoelectrochemical Water Oxidation with Electron‐Donating Effect. Adv. Funct. Mater. 2019, 29, 1904622, which has been published in final form at https://doi.org/10.1002/adfm.201904622. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. |
| Type: | article (author version) |
| URI: | http://hdl.handle.net/2115/79747 |
| 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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