Composition-Dependent Functionality of Copper Vanadate Photoanodes
Abstract
To understand functional roles of constituent elements in ternary metal oxide photoanodes, essential photoelectrochemical (PEC) properties are systematically analyzed on a series of copper vanadate compounds with different Cu:V elemental ratios. Here, homogeneous and highly continuous thin films of β-Cu2V2O7, γ-Cu3V2O8, Cu11V6O26, and Cu5V2O10 are grown via reactive co-sputtering and their performance characteristics for the light-driven oxygen evolution reaction are evaluated. All four compounds have similar bandgaps in the range of 1.83-2.03 eV, though Cu-rich phases exhibit stronger optical absorption and higher charge separation efficiencies. Transient photocurrent analysis reveals a reduction of surface catalytic activity with increasing Cu:V elemental ratio due to competitive charge recombination at Cu-related surface states. This comprehensive analysis of PEC functionalities - including photon absorption, carrier separation, and heterogeneous charge transfer - informs strategies for improving PEC activity in the copper vanadate materials system and reveals insights that may aid discovery, design, and engineering of new photoelectrode materials.
- Authors:
-
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Technische Univ. Munchen, Garching (Germany)
- Publication Date:
- Research Org.:
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Chemical Sciences, Geosciences & Biosciences Division
- OSTI Identifier:
- 1506303
- Grant/Contract Number:
- AC02-05CH11231
- Resource Type:
- Accepted Manuscript
- Journal Name:
- ACS Applied Materials and Interfaces
- Additional Journal Information:
- Journal Volume: 10; Journal Issue: 13; Journal ID: ISSN 1944-8244
- Publisher:
- American Chemical Society (ACS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; copper vanadate; photoanode; photoelectrochemistry; surface states; transient photocurrent analysis; water oxidation
Citation Formats
Jiang, Chang-Ming, Segev, Gideon, Hess, Lucas H., Liu, Guiji, Zaborski, Gregory, Toma, Francesca M., Cooper, Jason K., and Sharp, Ian D. Composition-Dependent Functionality of Copper Vanadate Photoanodes. United States: N. p., 2018.
Web. doi:10.1021/acsami.8b02977.
Jiang, Chang-Ming, Segev, Gideon, Hess, Lucas H., Liu, Guiji, Zaborski, Gregory, Toma, Francesca M., Cooper, Jason K., & Sharp, Ian D. Composition-Dependent Functionality of Copper Vanadate Photoanodes. United States. doi:10.1021/acsami.8b02977.
Jiang, Chang-Ming, Segev, Gideon, Hess, Lucas H., Liu, Guiji, Zaborski, Gregory, Toma, Francesca M., Cooper, Jason K., and Sharp, Ian D. Wed .
"Composition-Dependent Functionality of Copper Vanadate Photoanodes". United States. doi:10.1021/acsami.8b02977. https://www.osti.gov/servlets/purl/1506303.
@article{osti_1506303,
title = {Composition-Dependent Functionality of Copper Vanadate Photoanodes},
author = {Jiang, Chang-Ming and Segev, Gideon and Hess, Lucas H. and Liu, Guiji and Zaborski, Gregory and Toma, Francesca M. and Cooper, Jason K. and Sharp, Ian D.},
abstractNote = {To understand functional roles of constituent elements in ternary metal oxide photoanodes, essential photoelectrochemical (PEC) properties are systematically analyzed on a series of copper vanadate compounds with different Cu:V elemental ratios. Here, homogeneous and highly continuous thin films of β-Cu2V2O7, γ-Cu3V2O8, Cu11V6O26, and Cu5V2O10 are grown via reactive co-sputtering and their performance characteristics for the light-driven oxygen evolution reaction are evaluated. All four compounds have similar bandgaps in the range of 1.83-2.03 eV, though Cu-rich phases exhibit stronger optical absorption and higher charge separation efficiencies. Transient photocurrent analysis reveals a reduction of surface catalytic activity with increasing Cu:V elemental ratio due to competitive charge recombination at Cu-related surface states. This comprehensive analysis of PEC functionalities - including photon absorption, carrier separation, and heterogeneous charge transfer - informs strategies for improving PEC activity in the copper vanadate materials system and reveals insights that may aid discovery, design, and engineering of new photoelectrode materials.},
doi = {10.1021/acsami.8b02977},
journal = {ACS Applied Materials and Interfaces},
number = 13,
volume = 10,
place = {United States},
year = {2018},
month = {2}
}
Web of Science
Works referencing / citing this record:
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- Bera, Krishna Prasad; Haider, Golam; Usman, Muhammad
- Advanced Functional Materials, Vol. 28, Issue 51
Progress on ternary oxide-based photoanodes for use in photoelectrochemical cells for solar water splitting
journal, January 2019
- Lee, Dong Ki; Lee, Dongho; Lumley, Margaret A.
- Chemical Society Reviews, Vol. 48, Issue 7
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journal, January 2018
- Scarongella, Mariateresa; Gadiyar, Chethana; Strach, Michal
- Journal of Materials Chemistry C, Vol. 6, Issue 44
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journal, January 2020
- Spitler, Mark T.; Modestino, Miguel A.; Deutsch, Todd G.
- Sustainable Energy & Fuels, Vol. 4, Issue 3
Deep eutectic solvent route synthesis of zinc and copper vanadate n-type semiconductors – mapping oxygen vacancies and their effect on photovoltage
journal, January 2019
- Hong, Sangki; Doughty, Rachel M.; Osterloh, Frank E.
- Journal of Materials Chemistry A, Vol. 7, Issue 19
Visible Light Driven Photoanodes for Water Oxidation Based on Novel r-GO/β-Cu2V2O7/TiO2 Nanorods Composites
journal, July 2018
- Shuang, Shuang; Girardi, Leonardo; Rizzi, Gian
- Nanomaterials, Vol. 8, Issue 7