Journal
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
Volume 45, Issue 35, Pages 17468-17479Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2020.04.267
Keywords
Lanthanum ferrite; Graphitic carbon nitride; Photoelectrochemical water splitting; Hydrogen evolution
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Funding
- French PIA project Lorraine Universite d'Excellence [ANR-15-IDEX-04-LUE]
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The deposition of LaFeO3 at the surface of a graphitic carbon nitride (g-C3N4) film via magnetron sputtering followed by oxidation for photoelectrochemical (PEC) water splitting is reported. The LaFeO3/g-C3N4 film was investigated by various characterization techniques including SEM, XRD, Raman spectroscopy, XPS and photo-electrochemical measurements. Our results show that the hydrogen production rate of a g-C3N4 film covered by a LaFeO3 film, exhibiting both a thickness of ca. 50 nm, is of 10.8 umol cm(-2) under visible light irradiation. This value is ca. 70% higher than that measured for pure LaFeO3 and g-C3N4 films and confirms the effective separation of electron-hole pairs at the interface of LaFeO3/g-C3N4 films. Moreover, the LaFeO3/g-C3N4 films were demonstrated to be stable and retained a high activity (ca. 70%) after the third reuse. (C) 2020 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
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