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Ru II Photosensitizer‐Functionalized Two‐Dimensional MoS 2 for Light‐Driven Hydrogen Evolution
Author(s) -
Chen Xin,
McAteer David,
McGuinness Cormac,
Godwin Ian,
Coleman Jonathan N.,
McDonald Aidan R.
Publication year - 2018
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201705203
Subject(s) - photosensitizer , photocurrent , ruthenium , molybdenum disulfide , raman spectroscopy , covalent bond , photochemistry , molybdenum , chemistry , materials science , metal , x ray photoelectron spectroscopy , crystallography , catalysis , inorganic chemistry , organic chemistry , chemical engineering , physics , optoelectronics , optics , metallurgy , engineering
Metallic‐phase molybdenum disulfide (1T‐MoS 2 ) nanosheets have proven to be highly active in the hydrogen evolution reaction (HER). We describe construction of photosensitizer functionalized 1T‐MoS 2 by covalently tethering the molecular photosensitizer [Ru II (bpy) 3 ] 2+ (bpy=2,2′‐bipyridine) on 1T‐MoS 2 nanosheets. This was achieved by covalently tethering the bpy ligand to 1T‐MoS 2 nanosheets, and subsequent complexation with [Ru II (bpy) 2 Cl 2 ] to yield [Ru II (bpy) 3 ]–MoS 2 . The obtained [Ru II (bpy) 3 ]–MoS 2 nanosheets were characterized using infra‐red, electronic absorption, X‐ray photoelectron, and Raman spectroscopies, X‐ray powder diffraction and electron microscopy. The fabricated material exhibited a significant improvement of photocurrent and HER performance, demonstrating the potential of such two‐dimensional [Ru II (bpy) 3 ]–MoS 2 constructs in photosensitized HER.