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|Title:||A cobalt‐based metal – organic framework as cocatalyst on BiVO4 photoanode for enhanced photoelectrochemical water oxidation||Authors:||Zhang, Wang
Law, Adrian Wing-Keung
|Keywords:||Engineering::Environmental engineering||Issue Date:||2018||Source:||Zhang, W., Li, R., Zhao, X., Chen, Z., Law, A. W.-K., & Zhou, K. (2018). A cobalt‐based metal – organic framework as cocatalyst on BiVO4 photoanode for enhanced photoelectrochemical water oxidation. ChemSusChem, 11(16), 2710-2716. doi:10.1002/cssc.201801162||Journal:||ChemSusChem||Abstract:||A metal–organic framework (MOF)‐modified bismuth vanadate (BiVO4) photoanode is fabricated by an ultrathin sheet‐induced growth strategy, where ultrathin cobalt oxide sheets act as a metal source for the in situ synthesis of Co‐based MOF poly[Co2(benzimidazole)4] (denoted [Co2(bim)4]) nanoparticles on the surface of BiVO4. [Co2(bim)4] with small particle size and high dispersion can serve as a promising cocatalyst to accept holes transferred from BiVO4 and boost surface reaction kinetics for photoelectrochemical (PEC) water oxidation. The photocurrent density of a [Co2(bim)4]‐modified BiVO4 photoanode can achieve 3.1 mA cm−2 under AM 1.5G illumination at 1.23 V versus the reversible hydrogen electrode (RHE), which is better than those of pristine and cobalt‐based inorganic materials‐modified BiVO4 photoanodes. [Co2(bim)4], with porosity and abundant metal sites, exhibits a high surface charge‐separation efficiency (83 % at 1.2 V versus RHE), leading to the enhanced PEC activity. This work will bring new insight into the development of MOF materials as competent cocatalysts for PEC water splitting applications.||URI:||https://hdl.handle.net/10356/141774||ISSN:||1864-5631||DOI:||10.1002/cssc.201801162||Rights:||© 2018 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim. All rights reserved.||Fulltext Permission:||none||Fulltext Availability:||No Fulltext|
|Appears in Collections:||NEWRI Journal Articles|
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