GEO-LEOedocs LogoGEO-LEOedocs Logo
  • GEO-LEO
    • Deutsch
    • English
  • GEO-LEO
  • Deutsch 
    • Deutsch
    • English
  • Einloggen
Dokumentanzeige 
  •   Startseite
  • Alle Publikationen
  • Geochemie, Mineralogie, Petrologie
  • Dokumentanzeige
  •   Startseite
  • Alle Publikationen
  • Geochemie, Mineralogie, Petrologie
  • Dokumentanzeige
JavaScript is disabled for your browser. Some features of this site may not work without it.

A Triad Photoanode for Visible Light‐Driven Water Oxidation via Immobilization of Molecular Polyoxometalate on Polymeric Carbon Nitride

Gong, RuihaoORCIDiD
Mitoraj, DariuszORCIDiD
Gao, DandanORCIDiD
Mundszinger, ManuelORCIDiD
Sorsche, DieterORCIDiD
Kaiser, UteORCIDiD
Streb, CarstenORCIDiD
Beranek, RadimORCIDiD
Rau, SvenORCIDiD
DOI: https://doi.org/10.1002/adsu.202100473
Persistent URL: http://resolver.sub.uni-goettingen.de/purl?gldocs-11858/10067
Gong, Ruihao; Mitoraj, Dariusz; Gao, Dandan; Mundszinger, Manuel; Sorsche, Dieter; Kaiser, Ute; Streb, Carsten; Beranek, Radim; Rau, Sven, 2022: A Triad Photoanode for Visible Light‐Driven Water Oxidation via Immobilization of Molecular Polyoxometalate on Polymeric Carbon Nitride. In: Advanced Sustainable Systems, Band 6, 5, DOI: 10.1002/adsu.202100473.
 
Thumbnail
Dokument öffnen:
ADSU_ADSU202100473.pdf (2.100Mb)
Metadaten-Export:
Endnote
BibTex
RIS
  • Zusammenfassung
Due to their availability, low cost, nontoxicity, and tunability, polymeric carbon nitrides (CNx) represent one of the most attractive materials classes for the development of fully sustainable photo(electro)catalytic systems for solar‐driven water splitting. However, the development of CNx‐based photoanodes for visible light‐driven water oxidation to dioxygen is rather challenging, particularly due to issues related to photoelectrode stability and effective coupling of the light absorber with water oxidation catalysts. Herein, a triadic photoanode comprising a porous TiO2 electron collector scaffold sensitized by CNx coupled to a molecular cobalt polyoxometalate (CoPOM = [Co4(H2O)2(PW9O34)2]10) catalyst is reported. Complete water oxidation to dioxygen under visible (λ > 420 nm) light irradiation is demonstrated, with photocurrents down to relatively low bias potentials (0.2 V vs RHE). Furthermore, polyethyleneimine (PEI), a cationic polymer is shown to act as an effective and non‐sacrificial electrostatic linker for immobilization of the anionic CoPOM onto the negatively charged surface of CNx. The optimized deposition of CoPOM using the PEI linker translates directly into improved efficiency of the transfer of photogenerated holes to water molecules and to enhanced oxygen evolution. This work thus provides important design rules for effective immobilization of POM‐based catalysts into soft‐matter photoelectrocatalytic architectures for light‐driven water oxidation.
 
A triadic photoanode comprised of a porous TiO2 electron collector scaffold sensitized by polymeric carbon nitride and coupled to a molecular cobalt polyoxometalate (CoPOM) catalyst exhibits visible (λ > 420 nm) light‐driven water oxidation to dioxygen. The beneficial role of the cationic polyethyleneimine polymer as an effective electrostatic linker for immobilization of CoPOM onto carbon nitride is highlighted.
Statistik:
Zugriffsstatistik
Sammlung:
  • Geochemie, Mineralogie, Petrologie [395]
Schlagworte:
carbon nitride
oxygen evolution
photoelectrochemistry
polyoxometalates
water splitting
This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

ImpressumDatenschutzhinweis (Opt-Out)Cookie-EinwilligungÜber uns/KontaktNutzungsbedingungenHinweise zum VeröffentlichenSupport: fid-geo-digi@sub.uni-goettingen.de
DFGSUBFID GEOFID Montan
 

 

Hier veröffentlichen
Hinweise zum Veröffentlichen
Hinweise zur Suche

GesamtbestandBereiche & SammlungenErscheinungsdatumMitwirkendeSchlagworteSerienTitelDiese SammlungErscheinungsdatumMitwirkendeSchlagworteSerienTitel

Statistik

Benutzungsstatistik

ImpressumDatenschutzhinweis (Opt-Out)Cookie-EinwilligungÜber uns/KontaktNutzungsbedingungenHinweise zum VeröffentlichenSupport: fid-geo-digi@sub.uni-goettingen.de
DFGSUBFID GEOFID Montan