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  • Title: Rh metallene with functionalized polypyrrole surface for hydrogen evolution over a wide pH range.
    Author: Wang W, Deng K, Mao Q, Yu H, Wang Z, Xu Y, Li X, Wang L, Wang H.
    Journal: Nanotechnology; 2022 Nov 07; 34(4):. PubMed ID: 36261028.
    Abstract:
    Interface engineering of two-dimensional (2D) materials by conductive polymer modification is one of the valid methods to promote hydrogen evolution reaction (HER) performance. Herein, we report a simple and universal strategy for the synthesis of polypyrrole (PPy) modified Rh metallene (Rh@PPy metallene) towards an efficient pH-universal HER. Due to the unique ultrathin 2D metallene structure and the optimized electronic structure between the metallene-PPy surfaces, the as-prepared Rh@PPy metallene not only exhibits excellent HER activity with low overpotentials of 16, 39 and 42 mV in 0.5 M H2SO4, 1 M KOH, and 1 M phosphate buffer solution at current density of 10 mA cm-2, but also displays outstanding stability and durability. This work provides a well-founded pathway to constructe metallene-organic interfaces for various electrocatalytic applications.
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