Recent advances in MoS₂-based materials for electrocatalysis

Abstract

The increasing energy demand and related environmental issues have drawn great attention of the world, thus necessitating the development of sustainable technologies to preserve the ecosystems for future generations. Electrocatalysts...

Recent advances in nanostructured heterogeneous catalysts for N-cycle electrocatalysis

“…Such increases in NH3 and FE were attributed to the Li-S interactions on MoS2 (Fig.10(j)). MoS2 is arguably the most researched metal sulfide used in the conversion of N2 into NH3[171]. In Xie's work[172], a series of metal sulfides (i.e., CoS2, CoS, NiS2, NiS, FeS2, FeS, SnS2, and SnS) were developed on N-and S-doped reduced graphene for N2 fixation, and CoS2-based hybrid showed the highest activity for NH3 electrosynthesis.…”

Selective Electrocatalytic Hydrogenation of Nitroarenes on Interlayer-Expanded MoS2

“…Molybdenum disulfide (MoS 2 ) is considered a promising electrocatalyst for a series of energy-conversion reactions (e.g., water/nitrogen/carbon dioxide reduction) at cathodes . In particular, the adjustable lattice and electronic configurations associated with interlayer chemistry can enable the activation of substrates and the stabilization of surface-bound intermediates, − which is critical for ECH kinetics.…”

Influence of Monolayered RuO2 Nanosheets and Co2+ Ion Linkers in Improving the Electrocatalytic Performance of MoS2 Nanoflowers

“…As a result of the crisis of increasing fossil fuel depletion and CO 2 emissions, extensive research on the development of economically feasible production methods for renewable energy is being conducted. , Although hydrogen energy is considered an efficient alternative to conventional fossil fuels, − hydrogen production is currently achieved mainly by the steam reformation process of CH 4 that also releases an excessive amount of CO 2 . To address the detrimental climate change caused by this commercialized process, it is necessary to establish an eco-friendly carbon-free hydrogen production technique, such as electrochemical water splitting. − The development of high-performance electrocatalysts for the oxygen evolution reaction (OER) and the hydrogen evolution reaction (HER) is indispensable to accomplish effective water splitting. − One of the most promising classes of materials emerging as viable candidates for efficient HER electrocatalysis is nanostructured transition metal dichalcogenides, like MoS 2 . − The morphological control of nanostructured MoS 2 has been documented to be useful in increasing the HER electrocatalytic activity through the increase of adequate edge sites active for hydrogen adsorption and HER. − In addition to such morphology control, coupling with conductive nanostructures could provide an alternative means to improve the HER performance of MoS 2 , owing to the enhancement in electrical conductivity and the mass transport property. , The excellent electrical conduction renders graphene a powerful hybridization matrix for facilitating the charge/mass transport of MoS 2 nanostructures. , However, the hydrophobic nature and strong self-stacking of graphene considerably limit the hybridization efficiency of this two-dimensional (2D) material, consequently limiting the possible enhancements in the electron conductivity and electrocatalytic activity of polar MoS 2 species . As an emerging alternative to graphene, monolayered RuO 2 nanosheets with hydrophilic characteristics and negligible self-stacking tendency were considered a viable hybridization substrate to maximize the photocatalytic and electrocatalytic activities of inorganic solids, like CdS and layered double hydroxide, via the enhanced interfacial electronic coupling. , However, the negative charges of both MoS 2 and RuO 2 nanostructures prevent direct hybridization between these materials as a result of the electrostatic repulsion. , This limitation could be addressed by employing metal cations as linkers for both negatively charged species.…”