Activation of the Carbon Nitride Surface by Silica in a CO‐Evolving Hybrid Photocatalyst | Zendy

Wada Keisuke | Zendy; Eguchi Miharu | Zendy; Ishitani Osamu | Zendy; Maeda Kazuhiko | Zendy

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Activation of the Carbon Nitride Surface by Silica in a CO‐Evolving Hybrid Photocatalyst

Author(s) -

Wada Keisuke,

Eguchi Miharu,

Ishitani Osamu,

Maeda Kazuhiko

Publication year - 2017

Publication title -

chemsuschem

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.412

H-Index - 157

eISSN - 1864-564X

pISSN - 1864-5631

DOI - 10.1002/cssc.201600661

Subject(s) - photocatalysis , graphitic carbon nitride , selectivity , catalysis , carbon nitride , photosensitizer , electrochemistry , photoexcitation , photochemistry , chemistry , bifunctional , mesoporous silica , nitride , mesoporous material , carbon fibers , materials science , nanotechnology , electrode , organic chemistry , excited state , physics , composite number , nuclear physics , composite material , layer (electronics)

Photocatalytic reduction of CO 2 to CO proceeded by visible light ( λ >400 nm) using mesoporous graphitic carbon nitride (C 3 N 4 ) coupled with a Ru II –Re I binuclear complex ( RuRe ) containing a photosensitizer and catalytic units. The selectivity to CO exceeded 90 % during the initial stage. Photocatalytic reactions (including isotope tracer experiments) and electrochemical measurements revealed that the reaction proceeded according to a two‐step photoexcitation of C 3 N 4 and the Ru II photosensitizer unit, that is, it followed the Z‐Scheme mechanism. Modification of C 3 N 4 with highly dispersed silica was found to improve the ability of C 3 N 4 to accommodate RuRe , which enhanced the photocatalytic activity for CO production.

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