 |
Journal articles
Mo thio and oxo-thio molecular complexes film as self-healing catalyst for photocatalytic hydrogen evolution on 2D materials
Abstract : 2D semiconducting nanosheets of Transition Metal Dichalcogenides are attractive materials for solar energy
conversion because of their unique absorption properties. Here, we show that Mo thio- and oxo-thio-complexes
anchored on 2D p-WSe2 nanosheets considerably boost water splitting under visible light irradiation with
photocurrent density up to 2.0 mA cm−2 at -0.2 V/NHE. Besides developing high electro-catalytic activity, the
Mo-complexes film is also shown to be capable of healing surface defects. We propose that the observed healing
of surface defects arises from the strong adsorption on point defects of the 2D WSe2 substrate of Mo complexes
such as (MoS4)2-, (MoOS3)2-, (Mo2S6O2)2- as supported by DFT calculations. In addition, the thio-, oxo-thio Mo
complexes films are shown to enhance charge carrier separation and migration favouring the hydrogen evolution
reaction, putting forward the use of thio-, oxo-thio-Mo complexes as a multicomponent passivation layer exhibiting
multiple properties.
https://hal.archives-ouvertes.fr/hal-03031655
Contributor : Open Archive Toulouse Archive Ouverte (oatao) <>
Submitted on : Monday, November 30, 2020 - 3:30:21 PM
Last modification on : Thursday, December 3, 2020 - 3:30:03 AM
Long-term archiving on: : Monday, March 1, 2021 - 7:31:35 PM
Contributor : Open Archive Toulouse Archive Ouverte (oatao) <>
Submitted on : Monday, November 30, 2020 - 3:30:21 PM
Last modification on : Thursday, December 3, 2020 - 3:30:03 AM
Long-term archiving on: : Monday, March 1, 2021 - 7:31:35 PM
File
Barros Barbosa_26740_pdf.pdf
Files produced by the author(s)