Facile surfactant-assisted synthesis of CTAB-incorporated MoS<inf>2</inf>ultrathin nanosheets for efficient hydrogen evolution

Release time:2021-03-15 Hits:

Key Words:Molybdenum compounds;Catalyst activity - Electrocatalysts - Nanosheets - Slope stability - Specific surface area - Surface active agents;Catalytic active sites - Cetyl trimethyl ammonium bromides - Electrical conductivity - High specific surface area - Hydrogen evolution reactions - Hydrothermal process - Surfactant assisted synthesis - Ultrathin nanosheets

Abstract:Molybdenum disulfide (MoS<inf>2</inf>) has emerged as a promising electrocatalyst for catalyzing protons to hydrogen via the so-called hydrogen evolution reaction (HER). In order to enhance the HER activity, CTAB (cetyltrimethyl ammonium bromide)-incorporated MoS<inf>2</inf>ultrathin nanosheets with high specific surface area and more catalytic active sites have been successfully synthesized via a facile surfactant-assisted hydrothermal approach. Adding CTAB to the hydrothermal process can effectively regulate both structural and electronic benefits by controllable disorder engineering and simultaneous CTAB incorporation in MoS<inf>2</inf>catalysts, leading to a higher specific surface area, more catalytic active sites and better electrical conductivity for improving HER activity. The optimized CTAB-incorporated MoS<inf>2</inf>ultrathin nanosheets exhibit excellent activity for HER with a small onset potential of 88 mV, a low Tafel slope of 55 mV dec^-1, and relatively good stability. © The Royal Society of Chemistry 2016.

Volume:6

Issue:20

Translation or Not:no