Chemical vapor deposition of uniform bilayer PtS2 flakes for electrocatalytic hydrogen evolution. Issue 16 (17th April 2023)

• Record Type: Journal Article
• Authors: Zhao, Yu-Qing; Zhu, Liang; Zhou, Bojian; Jiang, Shaolong
• Is Part Of: Physical chemistry chemical physics. Volume 25:Issue 16(2023)
• Page Start: 11311
• Page End: 11315
• Publication Date: 2023-04-17
• Subjects: Chemistry, Physical and theoretical -- Periodicals; 541.3
• DOI: 10.1039/d3cp01164j
• Languages: English
• ISSNs: 1463-9076

Abstract

Abstract : Uniform bilayer PtS2 flakes are obtained on mica by chemical vapor deposition. The PtS2 flakes transferred onto Au foil demonstrate good electrocatalytic hydrogen evolution reaction performance. Abstract : Two-dimensional (2D) 1T-PtS2 has been drawing considerable attention due to its highly layer-dependent bandgap, high carrier mobility, superior air stability, etc. However, the growth of 2D PtS2 with uniform thickness and controllable shape remains an immense challenge. Herein, the uniform bilayer (2L) 1T-PtS2 single crystals are controllably grown on mica using chemical vapor deposition for the first time. The variable morphology from triangular to hexagonal can be obtained by regulating growth temperature. Significantly, the 2L PtS2 flakes show a good electrocatalytic hydrogen evolution reaction (HER) property with an overpotential of 184 mV at 10 mA cm −2, Tafel slope of 81 mV dec −1, exchange current density of 43 μA cm −2, and outstanding stability. This work manifests that 2D PtS2 is a promising candidate for HER applications.