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Enhancement of 1T‐MoS 2 Superambient Temperature Stability and Hydrogen Evolution Performance by Intercalating a Phenanthroline Monolayer
Author(s) -
Goloveshkin Alexander S.,
Lenenko Natalia D.,
Naumkin Alexander V.,
Pereyaslavtsev Alexander Yu.,
Grigorieva Anastasia V.,
Shapovalov Aleksei V.,
Talanova Valeria N.,
Polezhaev Alexander V.,
Zaikovskii Vladimir I.,
Novikov Valentin V.,
Korlyukov Alexander A.,
Golub Alexandre S.
Publication year - 2021
Publication title -
chemnanomat
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.947
H-Index - 32
ISSN - 2199-692X
DOI - 10.1002/cnma.202000586
Subject(s) - electrocatalyst , raman spectroscopy , electrolyte , monolayer , materials science , x ray photoelectron spectroscopy , density functional theory , hydrate , chemical physics , chemical engineering , nanotechnology , electrochemistry , chemistry , computational chemistry , electrode , organic chemistry , physics , engineering , optics
Metastable modification of MoS 2 (1T) is widely recognized as a hopeful non‐precious electrocatalyst in hydrogen production. This paper describes an approach to impart a superambient temperature stability to 1T‐MoS 2 by incorporating it in 2D hybrid architecture with cationic monomolecular phenanthrolinium (PhenH + ) hydrate layers. The atomic structure and bonding interactions of the assembled architecture revealed by PXRD, TEM, XPS, Raman and UV‐Vis spectroscopy data coupled with DFT calculations and quantum theory of atoms in molecules (QTAIM) analysis suggest that the 1T‐MoS 2 sheets are involved in strong bonding with the PhenH‐H 2 O layers. This results in a highly stable layered system, which is kept intact in 0.5 M sulfuric acid electrolyte and tolerates superambient temperature heating. As compared with pure 1T‐MoS 2 , the compound with a phenanthroline interlayer provides greater activity and better current‐voltage efficiency in electrocatalytic hydrogen evolution after heating treatment owing to stabilization of the 1T phase. The obtained results could be useful for the design of novel electrocatalytic devices exploiting 1T‐MoS 2 modification.