Preparation of two-dimensional molybdenum phosphide via surface-confined atomic substitution
AssigneeCity University of Hong Kong
InventorsQiyuan He, Wenbin Wang, Junlei Qi
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Abstract
Method for preparing a nonlayered 2D MoP nanosheet, the method including: contacting a multi-layered MoX2 nanosheet with PH3 thereby forming the nonlayered 2D MoP nanosheet, wherein X is S or Se. The nonlayered 2D MoP nanosheet exhibits metallic charge transport and desirable performance in electrocatalytic hydrogen evolution reaction. In contrast to MoS2, which shows edge-dominate HER performance, the edge and basal plane of MoP deliver similar HER performance, which is correlated with theoretical calculation.
Claims20
A method of preparing a nonlayered 2D MoP nanosheet, the method comprising:
- contacting a multi-layered MoX2 nanosheet with PH3 thereby forming the nonlayered 2D MoP nanosheet, wherein X is S or Se.
A method of preparing a nonlayered 2D MoP nanosheet, wherein the method comprises:
- depositing MoX2 on a substrate by chemical vapor deposition or mechanical exfoliation thereby forming a multi-layered MoX2 nanosheet, wherein X is S or Se;
- heating NaH2PO2 at a temperature between 650-700° C. thereby generating PH3;
- and
- contacting the multi-layered MoX2 nanosheet having a thickness between about 3 nm to about 10 nm with PH3 at a temperature between 650-700° C. thereby forming the nonlayered 2D MoP nanosheet, wherein the nonlayered 2D MoP nanosheet is single-crystalline.
Dependencies are inferred from the claim text.