Control the O-O bond formation pathways by immobilizing molecular catalysts on glassy carbon via electrochemical polymerization
(English)Manuscript (preprint) (Other academic)
Molecular water oxidation catalysts Ru-bda (1) and Ru-pda (2) are electrochemically polymerized on glassy carbon (GC) electrodes. Reaction orders and kinetic isotope effects (KIE) of the corresponding electrodes are studied. Results indicate that poly-1@GC goes through a radical coupling pathway. By adding poly-styrene (PSt) as a “blocking unit” in the poly-1, the radical coupling process of Ru-bda is blocked, and poly-1+PSt@GC catalyzes water oxidation through the water nucleophilic attack pathway. In comparison, catalyst 2, which oxidizes water via water nucleophilic attack path in homogeneous systems, goes through a radical coupling pathway as well when 2 is polymerized on glassy carbon (poly-2@GC).
Other Chemistry Topics
Research subject Chemistry
IdentifiersURN: urn:nbn:se:kth:diva-181103OAI: oai:DiVA.org:kth-181103DiVA: diva2:898688
FunderSwedish Energy Agency, B61649
QS 20162016-01-292016-01-292016-02-01Bibliographically approved