TY - JOUR
T1 - Highly active single-layer MoS2 catalysts synthesized by swift heavy ion irradiation
AU - Madauß, Lukas
AU - Zegkinoglou, Ioannis
AU - Vázquez Muiños, Henrique
AU - Choi, Yong Wook
AU - Kunze, Sebastian
AU - Zhao, Meng Qiang
AU - Naylor, Carl H.
AU - Ernst, Philipp
AU - Pollmann, Erik
AU - Ochedowski, Oliver
AU - Lebius, Henning
AU - Benyagoub, Abdenacer
AU - Ban-D'Etat, Brigitte
AU - Johnson, A. T.Charlie
AU - Djurabekova, Flyura
AU - Roldan Cuenya, Beatriz
AU - Schleberger, Marika
N1 - Publisher Copyright:
© 2018 The Royal Society of Chemistry.
PY - 2018/12/28
Y1 - 2018/12/28
N2 - Two-dimensional molybdenum-disulfide (MoS2) catalysts can achieve high catalytic activity for the hydrogen evolution reaction upon appropriate modification of their surface. The intrinsic inertness of the compound's basal planes can be overcome by either increasing the number of catalytically active edge sites or by enhancing the activity of the basal planes via a controlled creation of sulfur vacancies. Here, we report a novel method of activating the MoS2 surface using swift heavy ion irradiation. The creation of nanometer-scale structures by an ion beam, in combination with the partial sulfur depletion of the basal planes, leads to a large increase of the number of low-coordinated Mo atoms, which can form bonds with adsorbing species. This results in a decreased onset potential for hydrogen evolution, as well as in a significant enhancement of the electrochemical current density by over 160% as compared to an identical but non-irradiated MoS2 surface.
AB - Two-dimensional molybdenum-disulfide (MoS2) catalysts can achieve high catalytic activity for the hydrogen evolution reaction upon appropriate modification of their surface. The intrinsic inertness of the compound's basal planes can be overcome by either increasing the number of catalytically active edge sites or by enhancing the activity of the basal planes via a controlled creation of sulfur vacancies. Here, we report a novel method of activating the MoS2 surface using swift heavy ion irradiation. The creation of nanometer-scale structures by an ion beam, in combination with the partial sulfur depletion of the basal planes, leads to a large increase of the number of low-coordinated Mo atoms, which can form bonds with adsorbing species. This results in a decreased onset potential for hydrogen evolution, as well as in a significant enhancement of the electrochemical current density by over 160% as compared to an identical but non-irradiated MoS2 surface.
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U2 - 10.1039/c8nr04696d
DO - 10.1039/c8nr04696d
M3 - Article
C2 - 30488928
AN - SCOPUS:85058482888
SN - 2040-3364
VL - 10
SP - 22908
EP - 22916
JO - Nanoscale
JF - Nanoscale
IS - 48
ER -