Achieving long-term stable BiVO4 photoanodes for solar water splitting via carbon-layer protecting combined with active centers dynamic repairing
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Autor:innen
Autor:in (Körperschaft)
Publikationsdatum
01.2024
Typ der Arbeit
Studiengang
Sammlung
Typ
01A - Beitrag in wissenschaftlicher Zeitschrift
Herausgeber:innen
Herausgeber:in (Körperschaft)
Betreuer:in
Übergeordnetes Werk
Chemical Engineering Journal
Themenheft
DOI der Originalpublikation
Link
Reihe / Serie
Reihennummer
Jahrgang / Band
479
Ausgabe / Nummer
Seiten / Dauer
147713
Patentnummer
Verlag / Herausgebende Institution
Elsevier
Verlagsort / Veranstaltungsort
Auflage
Version
Programmiersprache
Abtretungsempfänger:in
Praxispartner:in/Auftraggeber:in
Zusammenfassung
Although great interest is focused on highly active photoanodes for efficient photoelectrochemical (PEC) water splitting, the issue on improving stability during oxygen evolution reaction (OER) is seldom discussed by far. Herein, a simple chemical way to construct carbon functional interlayer between bismuth vanadate (BiVO4) and NiFe layered double hydroxide (NiFe-LDH) co-catalyst, combined with hydroxylation, can significantly improve the activity and stability. The enhanced electronic conductivity by carbon layer and formed strong polarization electronic field via surface hydroxylation, promote the interfacial charge transfer and bulk charge separation. More importantly, the carbon layer combined with more efficient redeposition of Fe active centers in NiFe-LDH catalysts caused by enhanced adsorption of Fe(III) onto Ni sites via hydroxylation, can greatly improve the OH-BiVO4@C@NiFe-LDH photoanode stability. With the synergistic effects of carbon functional interlayer and self-healing mechanism, OH-BiVO4@C@NiFe-LDH photoanode achieves extremely high photocurrent density (5.31 mA cm−2 at 1.23 versus the RHE), even maintaining more than 87.5 % of the initial photocurrent density within 20 h irradiation in KBi electrolyte with Fe(III) ions. This work provides a new strategy to enhance the performance of BiVO4–based photoanodes, especially for achieving long-term stability during OER.
Schlagwörter
Fachgebiet (DDC)
Veranstaltung
Startdatum der Ausstellung
Enddatum der Ausstellung
Startdatum der Konferenz
Enddatum der Konferenz
Datum der letzten Prüfung
ISBN
ISSN
1385-8947
1873-3212
1873-3212
Sprache
Englisch
Während FHNW Zugehörigkeit erstellt
Ja
Zukunftsfelder FHNW
Publikationsstatus
Veröffentlicht
Begutachtung
Peer-Review der ganzen Publikation
Open Access-Status
Closed
Lizenz
Zitation
Bai, W., Li, H., Hu, Y., Wang, J., Li, A., & Corvini, P. (2024). Achieving long-term stable BiVO4 photoanodes for solar water splitting via carbon-layer protecting combined with active centers dynamic repairing. Chemical Engineering Journal, 479, 147713. https://doi.org/10.1016/j.cej.2023.147713