The diverse structures, properties and applications of transition metal dichalcogenides (TMDs) and other two-dimensional (2D) van der Waals (vdW) materials have triggered worldwide interest. In particular, 2D magnetic vdW materials are becoming emerging candidates for novel electronic devices and fundamental research. As a newly emerged family of vdW layered material, metal phosphorus trichalcogenides (MPX3, X=S, Se and Te) crystals have attracted much attention due to their intrinsic magnetism, including various magnetic properties in this material family with different metal elements. Here, we report on the synthesis of ultrathin nanosheets of various 2D MPX3, such as FePS3, NiPS3, MnPS3, CuInPS3, via a chemical vapor deposition(CVD) method on different substrates (i.e., high surface area carbon fibers, ITO or FTO). Furthermore, their catalytic activity, including photocatalysis and electrocatalysis, and magnetic properties are also systematically studied. We found that the magnetic behaviors of the NiPS3 nanosheets could be controlled through introducing hetero-metal atoms (Co or Fe) and their electrocatalytic activity toward hydrogen evolution reaction (HER) can be modulated accordingly.

Electrocatalytic activity of two-dimensional nanosheets of magnetic metal phosphorus trichalcogenides

2019 Fall National Meeting

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