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Influence of Bi-Cu microstructure on the photoelectrochemical performance of BiVO4 photoanode for efficient water splitting
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| Title: | Influence of Bi-Cu microstructure on the photoelectrochemical performance of BiVO4 photoanode for efficient water splitting |
| Authors: | Subramanyam, Palyam Browse this author | | Meena, Bhagatram Browse this author | | Suryakala, Duvvuri Browse this author | | Subrahmanyam, Challapalli Browse this author |
| Keywords: | Photoelectrochemical cell | | BiVO4 | | Bi-Cu alloy | | Surface plasmon resonance | | Charge separation | | Water splitting |
| Issue Date: | 1-Oct-2021 |
| Publisher: | Elsevier |
| Journal Title: | Solar energy materials and solar cells |
| Volume: | 232 |
| Start Page: | 111354 |
| Publisher DOI: | 10.1016/j.solmat.2021.111354 |
| Abstract: | To date, photoanodes containing bimetallic alloy nanoparticles (ANPs) are exposed good photoelectrochemical (PEC) performance for hydrogen production owing to their optoelectronic properties. In this work, low-cost, visible light active and environmental-friendly BiVO4/Bi-Cu nanocomposite photoanode is fabricated via organic decomposition and electrodeposition process. Transmission electron microscope images reveals that Bi-Cu ANPs are uniformly distributed on BiVO4 which can enhance the PEC performance. Typical results originate that BiVO4/Bi-Cu nanocomposite exhibits a high photocurrent density of 10.31 mA cm-2 at 1.23 V and solar-to-hydrogen conversion efficiency of 3.55%, which is higher than other electrodes. In addition, this composite shows excellent long-term stability over 5 h and low charge transfer resistance. These results suggest the introduction of Bi-Cu ANPs enhances the broadband light absorption of BiVO4 due to the excitation of localized surface plasmons at different wavelengths and also improves the charge transportation in the photoanode. Thus, BiVO4/Bi-Cu photoelectrode reports here is superior PEC performance for hydrogen generation providing an economical and feasible route to fabricate surface plasmon resonance (SPR)-enhanced composites as photocatalysts using earth-abundant Bi and Cu metals instead of noble-metals. |
| Rights: | © <2021>. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/ | | http://creativecommons.org/licenses/by-nc-nd/4.0/ |
| Type: | article (author version) |
| URI: | http://hdl.handle.net/2115/90475 |
| Appears in Collections: | 電子科学研究所 (Research Institute for Electronic Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: Palyam Subramanyam
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