In:
Frontiers in Chemistry, Frontiers Media SA, Vol. 9 ( 2021-12-24)
Abstract:
Two novel supramolecular complexes RuRe ([Ru(dceb) 2 (bpt)Re(CO) 3 Cl](PF 6 )) and RuPt ([Ru(dceb) 2 (bpt)PtI(H 2 O)](PF 6 ) 2 ) [dceb = diethyl(2,2′-bipyridine)-4,4′-dicarboxylate, bpt = 3,5-di(pyridine-2-yl)-1,2,4-triazolate] were synthesized as new catalysts for photocatalytic CO 2 reduction and H 2 evolution, respectively. The influence of the catalytic metal for successful catalysis in solution and on a NiO semiconductor was examined. IR-active handles in the form of carbonyl groups on the peripheral ligand on the photosensitiser were used to study the excited states populated, as well as the one-electron reduced intermediate species using infrared and UV-Vis spectroelectrochemistry, and time resolved infrared spectroscopy. Inclusion of ethyl-ester moieties led to a reduction in the LUMO energies on the peripheral bipyridine ligand, resulting in localization of the 3 MLCT excited state on these peripheral ligands following excitation. RuPt generated hydrogen in solution and when immobilized on NiO in a photoelectrochemical (PEC) cell. RuRe was inactive as a CO 2 reduction catalyst in solution, and produced only trace amounts of CO when the photocatalyst was immobilized on NiO in a PEC cell saturated with CO 2 .
Type of Medium:
Online Resource
ISSN:
2296-2646
DOI:
10.3389/fchem.2021.795877
DOI:
10.3389/fchem.2021.795877.s001
Language:
Unknown
Publisher:
Frontiers Media SA
Publication Date:
2021
detail.hit.zdb_id:
2711776-5
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