Indexed by:
Abstract:
In-plane sulfur vacancies in the MoS2 catalyst exhibit great potential for low-temperature CO2 hydrogenation to methanol. However, both CO2 and H-2 adsorb and activate at sulfur vacancies, leading to competition between them. Anchoring atomically dispersed Co atoms over MoS2 may facilitate H-2 adsorption and activation. Here, a thiourea-assisted strategy was employed to construct a Co-thiourea complex, which transformed into atomically dispersed Co species after heat treatment. Under reaction conditions of 5 MPa and 220 degrees C, the 0.5Co/MoS2 catalyst achieved a methanol space-time yield of 323 mg(MeOH) g(cat)(-1) h(-1) after induction, with stability maintained for at least 500 h, compared to 177 mg(MeOH) g(cat)(-1) h(-1) for pristine MoS2. Mechanistic study revealed that the hydrogenation of CO2 to methanol follows the COOH* pathway, where CO2 is first hydrogenated to COOH* intermediate and then gradually hydrogenated CH3O* species. This work presents a viable strategy for developing atomically dispersed metal-MoS2 catalysts for CO2 hydrogenation to methanol.
Keyword:
Reprint 's Address:
Version:
Source :
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
ISSN: 2168-0485
Year: 2025
Issue: 27
Volume: 13
Page: 10690-10700
7 . 1 0 0
JCR@2023
Cited Count:
SCOPUS Cited Count:
ESI Highly Cited Papers on the List: 0 Unfold All
WanFang Cited Count:
Chinese Cited Count:
30 Days PV: 0
Affiliated Colleges: