TY - JOUR

T1 - Enhancement of 1T-MoS2 Superambient Temperature Stability and Hydrogen Evolution Performance by Intercalating a Phenanthroline Monolayer

AU - Goloveshkin, Alexander S.

AU - Lenenko, Natalia D.

AU - Naumkin, Alexander V.

AU - Pereyaslavtsev, Alexander Yu

AU - Grigorieva, Anastasia V.

AU - Shapovalov, Aleksei V.

AU - Talanova, Valeria N.

AU - Polezhaev, Alexander V.

AU - Zaikovskii, Vladimir I.

AU - Novikov, Valentin V.

AU - Korlyukov, Alexander A.

AU - Golub, Alexandre S.

N1 - Funding Information: This work was performed with the financial support from Ministry of Science and Higher Education of the Russian Federation using the equipment of Center for molecular composition studies of INEOS RAS. Publisher Copyright: © 2020 Wiley-VCH GmbH Copyright: Copyright 2021 Elsevier B.V., All rights reserved.

PY - 2021/4

Y1 - 2021/4

N2 - Metastable modification of MoS2 (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-MoS2 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-MoS2 sheets are involved in strong bonding with the PhenH-H2O 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-MoS2, 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-MoS2 modification.

AB - Metastable modification of MoS2 (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-MoS2 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-MoS2 sheets are involved in strong bonding with the PhenH-H2O 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-MoS2, 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-MoS2 modification.

KW - hydrogen evolution reaction

KW - intercalations

KW - layered compounds

KW - molybdenum disulfide

KW - organic-inorganic material

UR - http://www.scopus.com/inward/record.url?scp=85101563581&partnerID=8YFLogxK

U2 - 10.1002/cnma.202000586

DO - 10.1002/cnma.202000586

M3 - Article

AN - SCOPUS:85101563581

VL - 7

SP - 447

EP - 456

JO - ChemNanoMat

JF - ChemNanoMat

SN - 2199-692X

IS - 4

ER -