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Cobalt Hexacyanoferrate on BiVO4 Photoanodes for Robust Water Splitting
dc.contributor.author | Hegner, Franziska | |
dc.contributor.author | Herraiz Cardona, Isaac | |
dc.contributor.author | Cardenas-Morcoso, Drialys | |
dc.contributor.author | López, Núria | |
dc.contributor.author | Galan-Mascaros, Jose Ramon | |
dc.contributor.author | Gimenez, Sixto | |
dc.date.accessioned | 2018-05-08T07:19:26Z | |
dc.date.available | 2018-05-08T07:19:26Z | |
dc.date.issued | 2017-11-01 | |
dc.identifier.citation | HEGNER, Franziska Simone, et al. Cobalt Hexacyanoferrate on BiVO4 Photoanodes for Robust Water Splitting. ACS applied materials & interfaces, 2017, vol. 9, no 43, p. 37671-37681 | ca_CA |
dc.identifier.issn | 1944-8244 | |
dc.identifier.issn | 1944-8252 | |
dc.identifier.uri | http://hdl.handle.net/10234/174541 | |
dc.description.abstract | The efficient integration of photoactive and catalytic materials is key to promoting photoelectrochemical water splitting as a sustainable energy technology built on solar power. Here, we report highly stable water splitting photoanodes from BiVO4 photoactive cores decorated with CoFe Prussian blue-type electrocatalysts (CoFe-PB). This combination decreases the onset potential of BiVO4 by,similar to 0.8 V (down to 0.3 V vs reversible hydrogen electrode (RHE)) and increases the photovoltage by 0.45 V. The presence of the catalyst also leads to a remarkable 6-fold enhancement of the photocurrent at 1.23 V versus RHE, while keeping the light-harvesting ability of BiVO4. Structural and mechanistic studies indicate that CoFe-PB effectively acts as a true catalyst on BiVO4. This mechanism, stemming from the adequate alignment of the energy levels, as showed by density functional theory calculations, allows CoFe-PB to outperform all previous catalyst/BiVO4 junctions and, in addition, leads to noteworthy long-term stability. A bare 10-15% decrease in photocurrent was observed after more than 50 h of operation under light irradiation. | ca_CA |
dc.format.extent | 11 p. | ca_CA |
dc.format.mimetype | application/pdf | ca_CA |
dc.language.iso | eng | ca_CA |
dc.relation.isPartOf | ACS applied materials & interfaces, 2017, vol. 9, no 43 | ca_CA |
dc.rights | This is an open access article published under an ACS AuthorChoice License, which permits copying and redistribution of the article or any adaptations for non-commercial purposes. | ca_CA |
dc.rights.uri | http://rightsstatements.org/vocab/InC/1.0/ | * |
dc.subject | photoelectrocatalysis | ca_CA |
dc.subject | water splitting | ca_CA |
dc.subject | oxygen evolution | ca_CA |
dc.subject | electrochemistry | ca_CA |
dc.subject | computational chemistry | ca_CA |
dc.subject | Prussian blue | ca_CA |
dc.title | Cobalt Hexacyanoferrate on BiVO4 Photoanodes for Robust Water Splitting | ca_CA |
dc.type | info:eu-repo/semantics/article | ca_CA |
dc.identifier.doi | http://dx.doi.org/10.1021/acsami.7b09449 | |
dc.relation.projectID | University Jaume I: P11B2014-51; Generalitat Valenciana through the Santiago Grisolia Program: 2015-031; European Union (project ERC StG grant CHEMCOMP): 279313; Spanish Ministerio de Economia y Competitividad (MINECO): CTQ2015-71287-R, CTQ2015-68770-R; Severo Ochoa Excellence Accreditation: SEV-2013-0319; Generalitat de Catalunya: 2014SGR-797 2014SGR-199; CERCA Programme/Generalitat de Catalunya; "LaCaixa"-Severo Ochoa International Programme of Ph.D. Scholarships (Programa internacional de Becas "LaCaixa"-Severo Ochoa) | ca_CA |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | ca_CA |
dc.relation.publisherVersion | https://pubs.acs.org/doi/10.1021/acsami.7b09449 | ca_CA |
dc.contributor.funder | We would like to acknowledge financial support from the University Jaume I through the P11B2014-51 project, and from the Generalitat Valenciana through the Santiago Grisolia Program, grant 2015-031. Serveis Centrals at UJI (SCIC) are also acknowledged. This work was also supported by the European Union (project ERC StG grant CHEMCOMP no. 279313); the Spanish Ministerio de Economía y Competitividad (MINECO) through projects CTQ2015-71287-R, CTQ2015-68770-R, and the Severo Ochoa Excellence Accreditation 2014-2018 SEV-2013-0319; the Generalitat de Catalunya (2014SGR-797 and 2014SGR-199), and the CERCA Programme/Generalitat de Catalunya. Additionally, the “LaCaixa”-Severo Ochoa International Programme of Ph.D. Scholarships (Programa internacional de Becas “LaCaixa”-Severo Ochoa) is acknowledged for F.S. Hegner’s predoctoral grant. We thank BSC-RES for generous computational resources. | ca_CA |
dc.type.version | info:eu-repo/semantics/publishedVersion | ca_CA |
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