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Author: Rosas-Hernández, Alonso × End date: 2019 × Start date: 2010 × Type: Text × Subject: catalyst × WGL Institute: LIKAT ×

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    Highly active and selective photochemical reduction of CO2 to CO using molecular-defined cyclopentadienone iron complexes
    (Cambridge : Soc., 2015) Rosas-Hernández, Alonso; Alsabeh, Pamela G.; Barsch, Enrico; Junge, Hernrik; Ludwig, Ralf; Beller, Matthias
    Herein, we report highly active (cyclopentadienone)iron–tricarbonyl complexes for CO2 photoreduction using visible light with an Ir complex as photosensitizer and TEOA as electron/proton donor. Turnover numbers (TON) of ca. 600 (1 h) with initial turnover frequencies (TOF) up to 22.2 min−1 were observed. Operando FTIR measurements allowed for the proposal of a plausible mechanism for catalyst activation.
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    Earth-abundant photocatalytic systems for the visible-light-driven reduction of CO2 to CO
    (Cambridge : RSC, 2017) Rosas-Hernández, Alonso; Steinlechner, Christoph; Junge, Henrik; Beller, Matthias
    Herein, we report a highly selective photocatalytic system, based on an in situ copper photosensitizer and an iron catalyst, for the reduction of CO2 to CO. Turnover numbers (TON) up to 487 (5 h) with selectivities up to 99% and ΦCO = 13.3% were observed. Stern-Volmer analysis allowed us to establish a reductive quenching mechanism between the Cu PS and electron donor.