Vastly Enhanced BiVO4 Photocatalytic OER Performance by NiCoO2 as Cocatalyst

Handle URI:
http://hdl.handle.net/10754/625725
Title:
Vastly Enhanced BiVO4 Photocatalytic OER Performance by NiCoO2 as Cocatalyst
Authors:
Palaniselvam, Thangavelu; Shi, Le ( 0000-0003-1794-1256 ) ; Mettela, Gangaiah; Anjum, Dalavar H.; Li, Renyan; Katuri, Krishna; Saikaly, Pascal ( 0000-0001-7678-3986 ) ; Wang, Peng ( 0000-0003-0856-0865 )
Abstract:
Here, a simple and efficient preparation of NiCoO nanoparticle modified nanoporous bismuth vanadate (BiVO) thin film and its application in photoelectrocatalytic (PEC) oxygen evolution reaction (OER) is demonstrated. The role of NiCoO in the composite electrode (BiVO/NiCoO) is twofold: OER cocatalyst and band structure modifier. It improves surface reaction kinetics for PEC OER and enhances charge separation efficiency simultaneously, which is believed to be a determining factor for the unprecedentedly high PEC OER performance of this BiVO/NiCoO nanocomposite. The photocurrent density of 3.6 mA cm at 1.23 V versus RHE in 0.1 m potassium phosphate buffered (pH = 7) electrolyte by BiVO/NiCoO is three times that of BiVO and significantly higher than most literature values. The BiVO/NiCoO nanocomposite shows/possess a high charge separation efficiency (η) of ≈72% as compared to only 23% for pure nanoporous BiVO at 1.23 V versus RHE, which demonstrates convincing role of NiCoO in the composite electrode. Both the excellent photocurrent density and great operational stability of this BiVO/NiCoO nanocomposite makes it a promising photocatalytic material for practical applications.
KAUST Department:
Biological and Environmental Sciences and Engineering (BESE) Division; Water Desalination and Reuse Research Center (WDRC); Imaging and Characterization Core Lab
Citation:
Palaniselvam T, Shi L, Mettela G, Anjum DH, Li R, et al. (2017) Vastly Enhanced BiVO4 Photocatalytic OER Performance by NiCoO2 as Cocatalyst. Advanced Materials Interfaces: 1700540. Available: http://dx.doi.org/10.1002/admi.201700540.
Publisher:
Wiley-Blackwell
Journal:
Advanced Materials Interfaces
Issue Date:
7-Aug-2017
DOI:
10.1002/admi.201700540
Type:
Article
ISSN:
2196-7350
Sponsors:
This work was supported by the King Abdullah University of Science and Technology (KAUST) center competitive fund (CCF) fund awarded to Water Desalination and Reuse Center (WDRC). The authors are grateful to the other members of the KAUST Environmental Nanotechnology group for the helpful discussions.
Additional Links:
http://onlinelibrary.wiley.com/doi/10.1002/admi.201700540/full
Appears in Collections:
Articles; Advanced Nanofabrication, Imaging and Characterization Core Lab; Water Desalination and Reuse Research Center (WDRC); Biological and Environmental Sciences and Engineering (BESE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorPalaniselvam, Thangaveluen
dc.contributor.authorShi, Leen
dc.contributor.authorMettela, Gangaiahen
dc.contributor.authorAnjum, Dalavar H.en
dc.contributor.authorLi, Renyanen
dc.contributor.authorKaturi, Krishnaen
dc.contributor.authorSaikaly, Pascalen
dc.contributor.authorWang, Pengen
dc.date.accessioned2017-10-03T12:49:36Z-
dc.date.available2017-10-03T12:49:36Z-
dc.date.issued2017-08-07en
dc.identifier.citationPalaniselvam T, Shi L, Mettela G, Anjum DH, Li R, et al. (2017) Vastly Enhanced BiVO4 Photocatalytic OER Performance by NiCoO2 as Cocatalyst. Advanced Materials Interfaces: 1700540. Available: http://dx.doi.org/10.1002/admi.201700540.en
dc.identifier.issn2196-7350en
dc.identifier.doi10.1002/admi.201700540en
dc.identifier.urihttp://hdl.handle.net/10754/625725-
dc.description.abstractHere, a simple and efficient preparation of NiCoO nanoparticle modified nanoporous bismuth vanadate (BiVO) thin film and its application in photoelectrocatalytic (PEC) oxygen evolution reaction (OER) is demonstrated. The role of NiCoO in the composite electrode (BiVO/NiCoO) is twofold: OER cocatalyst and band structure modifier. It improves surface reaction kinetics for PEC OER and enhances charge separation efficiency simultaneously, which is believed to be a determining factor for the unprecedentedly high PEC OER performance of this BiVO/NiCoO nanocomposite. The photocurrent density of 3.6 mA cm at 1.23 V versus RHE in 0.1 m potassium phosphate buffered (pH = 7) electrolyte by BiVO/NiCoO is three times that of BiVO and significantly higher than most literature values. The BiVO/NiCoO nanocomposite shows/possess a high charge separation efficiency (η) of ≈72% as compared to only 23% for pure nanoporous BiVO at 1.23 V versus RHE, which demonstrates convincing role of NiCoO in the composite electrode. Both the excellent photocurrent density and great operational stability of this BiVO/NiCoO nanocomposite makes it a promising photocatalytic material for practical applications.en
dc.description.sponsorshipThis work was supported by the King Abdullah University of Science and Technology (KAUST) center competitive fund (CCF) fund awarded to Water Desalination and Reuse Center (WDRC). The authors are grateful to the other members of the KAUST Environmental Nanotechnology group for the helpful discussions.en
dc.publisherWiley-Blackwellen
dc.relation.urlhttp://onlinelibrary.wiley.com/doi/10.1002/admi.201700540/fullen
dc.subjectBiVO4en
dc.subjectCocatalystsen
dc.subjectNi-Co oxidesen
dc.subjectOxygen evolution reactionen
dc.subjectPhotoelectrocatalystsen
dc.titleVastly Enhanced BiVO4 Photocatalytic OER Performance by NiCoO2 as Cocatalysten
dc.typeArticleen
dc.contributor.departmentBiological and Environmental Sciences and Engineering (BESE) Divisionen
dc.contributor.departmentWater Desalination and Reuse Research Center (WDRC)en
dc.contributor.departmentImaging and Characterization Core Laben
dc.identifier.journalAdvanced Materials Interfacesen
kaust.authorPalaniselvam, Thangaveluen
kaust.authorShi, Leen
kaust.authorMettela, Gangaiahen
kaust.authorAnjum, Dalavar H.en
kaust.authorLi, Renyanen
kaust.authorKaturi, Krishnaen
kaust.authorSaikaly, Pascalen
kaust.authorWang, Pengen
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