Hierarchical MoS2 nanosheets integrated Ti3C2 MXenes for electrocatalytic hydrogen evolution. (8th January 2019)

• Record Type: Journal Article
• Authors: Huang, Lan; Ai, Lunhong; Wang, Mei; Jiang, Jing; Wang, Shaobin
• Is Part Of: International journal of hydrogen energy. Volume 44:Number 2(2019)
• Page Start: 965
• Page End: 976
• Publication Date: 2019-01-08
• Subjects: Hydrogen evolution reaction -- Electrocatalyst -- Ti3C2 -- MoS2 -- Nanosheets; Hydrogen as fuel -- Periodicals; Hydrogène (Combustible) -- Périodiques; Hydrogen as fuel; Periodicals; 665.81
• DOI: 10.1016/j.ijhydene.2018.11.084
• Languages: English
• ISSNs: 0360-3199

Abstract

Abstract: In this study, conductive Ti3 C2 MXenes were used as a promoter to accelerate charger transfer of MoS2, realizing highly efficient HER electrocatalysis. A facile hydrothermal strategy is demonstrated to be effective for in situ growth of MoS2 nanosheets vertically standing on planar Ti3 C2 nanosheets to form hierarchical heterostructures. Beneficial from the opened layer structures and strong interfacial coupling effect, the resulting MoS2 /Ti3 C2 heterostructures achieve a giant enhancement in HER activity compared with pristine MoS2 nanosheets. More specifically, the catalytic current density induced by MoS2 /Ti3 C2 heterostructures at an overpotential of ∼400 mV is nearly 6.2 times as high as that of the pristine MoS2 nanosheets. This work uncovers that the Ti3 C2 nanosheets are ideal candidates for construction of highly active electrocatalysts for water splitting. Graphical abstract: Image 1 Highlights: In situ growth of MoS2 nanosheets on Ti3 C2 nanosheets was achieved. Ti3 C2 was used as a promoter to accelerate charger transfer of MoS2 . MoS2 /Ti3 C2 heterostructures achieved a greatly enhanced HER activity.