Raw Data supporting article: Inverse opal CuCrO2 photocathodes for H2 production using organic dyes and a molecular Ni catalyst

Reisner, Erwin; Creissen, Charles E.; Warnan, Julien; Garcia, Daniel; Farré, Yoann; Odobel, Fabrice

doi:10.17863/cam.43804

2019

DOI: 10.17863/cam.43804

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Raw Data supporting article: Inverse opal CuCrO2 photocathodes for H2 production using organic dyes and a molecular Ni catalyst

Erwin Reisner¹,

Charles E. Creissen²,

Julien Warnan³

et al.

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Inverse Opal CuCrO₂ Photocathodes for H₂ Production Using Organic Dyes and a Molecular Ni Catalyst

et al. 2019

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Dye-sensitized photoelectrochemical (DSPEC) cells are an emerging approach to producing solar fuels. The recent development of delafossite CuCrO2 as a p-type semiconductor has enabled H2 generation through the coassembly of catalyst and dye components. Here, we present a CuCrO2 electrode based on a high-surface-area inverse opal (IO) architecture with benchmark performance in DSPEC H2 generation. Coimmobilization of a phosphonated diketopyrrolopyrrole (DPP-P) or perylene monoimide (PMI-P) dye with a phosphonated molecular Ni catalyst (NiP) demonstrates the ability of IO-CuCrO2 to photogenerate H2. A positive photocurrent onset potential of approximately +0.8 V vs RHE was achieved with these photocathodes. The DPP-P-based photoelectrodes delivered photocurrents of −18 μA cm–2 and generated 160 ± 24 nmol of H2 cm–2, whereas the PMI-P-based photocathodes displayed higher photocurrents of −25 μA cm–2 and produced 215 ± 10 nmol of H2 cm–2 at 0.0 V vs RHE over the course of 2 h under visible light illumination (100 mW cm–2, AM 1.5G, λ > 420 nm, 25 °C). The high performance of the PMI-constructed system is attributed to the well-suited molecular structure and photophysical properties for p-type sensitization. These precious-metal-free photocathodes highlight the benefits of using bespoke IO-CuCrO2 electrodes as well as the important role of the molecular dye structure in DSPEC fuel synthesis.

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Inverse Opal CuCrO₂ Photocathodes for H₂ Production Using Organic Dyes and a Molecular Ni Catalyst

et al. 2019

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Raw Data supporting article: Inverse opal CuCrO2 photocathodes for H2 production using organic dyes and a molecular Ni catalyst

Cited by 1 publication

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Inverse Opal CuCrO₂ Photocathodes for H₂ Production Using Organic Dyes and a Molecular Ni Catalyst

Inverse Opal CuCrO₂ Photocathodes for H₂ Production Using Organic Dyes and a Molecular Ni Catalyst

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Raw Data supporting article: Inverse opal CuCrO2 photocathodes for H2 production using organic dyes and a molecular Ni catalyst

Cited by 1 publication

References 0 publications

Inverse Opal CuCrO2 Photocathodes for H2 Production Using Organic Dyes and a Molecular Ni Catalyst

Inverse Opal CuCrO2 Photocathodes for H2 Production Using Organic Dyes and a Molecular Ni Catalyst

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Inverse Opal CuCrO₂ Photocathodes for H₂ Production Using Organic Dyes and a Molecular Ni Catalyst

Inverse Opal CuCrO₂ Photocathodes for H₂ Production Using Organic Dyes and a Molecular Ni Catalyst