Details

Autor(en) / Beteiligte

• Huerta-Zerón, H. D.
• Rockstroh, N.
• Lang, M.
• Surkus, A.-E.
• Brüser, V.
• Lochbrunner, S.
• Junge, H.
• Beller, M.

Titel

Photocatalytic CO 2 reduction with a TiO 2 -supported copper photosensitizer and an iron-based CO 2 reduction catalyst

Ist Teil von

• Catalysis science & technology, 2023-07, Vol.13 (13), p.3940-3945

Erscheinungsjahr

2023

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• The combination of the homogeneous iron catalyst (2,4-bis(trimethylsilyl)bicyclo[4.3.0]nona-1,4-dien-3-one)iron tricarbonyl and the copper based photosensitizer [Cu(2,9-dimethyl-4,7-diphenyl-1,10-phenanthroline-5,6-disulfonate-disodium)(xantphos)]PF 6 ( PS 1 ) supported on TiO 2 (Hombikat) allows for the reduction of carbon dioxide to carbon monoxide in the presence of 1,3-dimethyl-2-phenyl-2,3-dihydro-1 H -benzimidazole (BIH) as the sacrificial electron donor. The application of the titania supported PS 1 resulted in a more than doubled productivity compared to the fully homogeneous system. Applying the composite material with highest copper loading ( C 4 ) improved the catalyst turnover numbers for the iron catalyst up to 866 (TON CO (Fe)). Quantum yields up to 9.5% at 415 nm and 0.07 W cm −1 were achieved. The composite materials Cu-PS@TiO 2 were investigated by STEM, UV/vis and time-resolved emission spectroscopy, and cyclic voltammetry as well as differential pulse voltammetry.