Mo3S4Clusters as an Effective H2Evolution Catalyst on Protected Si Photocathodes | Zendy

Brian Seger | Zendy; Konrad Herbst | Zendy; Thomas Pedersen | Zendy; Billie L. Abrams | Zendy; Peter C. K. Vesborg | Zendy; Ole Hansen | Zendy; Ib Chorkendorff | Zendy

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Mo₃S₄Clusters as an Effective H₂Evolution Catalyst on Protected Si Photocathodes

Author(s) -

Brian Seger,

Konrad Herbst,

Thomas Pedersen,

Billie L. Abrams,

Peter C. K. Vesborg,

Ole Hansen,

Ib Chorkendorff

Publication year - 2014

Publication title -

journal of the electrochemical society

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.258

H-Index - 271

eISSN - 1945-7111

pISSN - 0013-4651

DOI - 10.1149/2.0161412jes

Subject(s) - photocathode , catalysis , phosphonate , metal , electrode , cluster (spacecraft) , saturation (graph theory) , hydrogen , materials science , water splitting , chemistry , inorganic chemistry , metallurgy , photocatalysis , physics , electron , biochemistry , computer science , programming language , mathematics , organic chemistry , quantum mechanics , combinatorics

This work shows how a molecular Mo3S4 cluster bonded to a photoelectrode surface via a phosphonate ligand can be a highly effective co-catalyst in photocathodic hydrogen evolution systems. Using a TiO2 protected n+p Si photocathode, H2 evolution occurs with an onset of +0.33 V vs. RHE in an acid solution with this precious metal-free system. Using just the red part of the AM1.5 solar spectrum (λ > 635 nm), a saturation current of 20 mA/cm2 is achieved from an electrode containing Mo3S4 dropcasted onto a 100 nm TiO2/7 nm Ti/n+p Si electrode.

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