Dear Colleagues,

Since the discovery of graphene in 2004, considerable efforts have been devoted to two-dimensional layered materials, such as molybdenum disulfide (MoS₂), tungsten disulfide (WS₂), molybdenum diselenide (MoSe₂), etc. With the thickness reduced to the nanoscale, their electronic, magnetic, optical and chemical properties may undergo remarkable changes depending on the number of layers, which are obviously different from their bulky counterparts. Thus, low-dimensional layered materials exhibit interesting applications in nanoelectronics, electrocatalysis, photocatalysis, and so on. Particularly, since the first discovery of a single-layer MoS₂ transistor in 2011, MoS₂ or WS₂-based layered materials have attracted considerable attention due to their unique direct-band-gap semiconducting feature once they are thinned to a monolayer. Accordingly, numerous synthesis procedures have been developed to grow monolayer MoS₂ and its analogues. Furthermore, both computational and experimental results have demonstrated that the catalytic activity of semiconducting MoS₂ mainly originates from the edge sites rather than inert basal planes. A suitable conductive scaffold can play a positive role in enhancing the relevant hydrogen evolution performance. In this special collection, we will publish papers on all kinds of different methods to synthesize monolayer MoS₂ and its analogues, and try to uncover their promising applications in nanoelectronics, electrocatalytic water splitting, CO₂ reduction, photocatalysis, ammonia synthesis or fuel cells.

Prof. Dr. Fang Yu
Guest Editor

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• 2D materials
• molybdenum disulfide
• electrocatalysis
• photocatalysis
• nanoelectronics
• fuel cells