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Construction of Porous Mo 3 P/Mo Nanobelts as Catalysts for Efficient Water Splitting
Author(s) -
Li Feng,
Han GaoFeng,
Noh HyukJun,
Lu Yalin,
Xu Jiao,
Bu Yunfei,
Fu Zhengping,
Baek JongBeom
Publication year - 2018
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201808844
Subject(s) - tafel equation , overpotential , catalysis , porosity , dissociation (chemistry) , density functional theory , materials science , water splitting , hydrogen , chemical engineering , molybdenum , chemistry , inorganic chemistry , electrochemistry , computational chemistry , electrode , organic chemistry , composite material , photocatalysis , engineering
A novel synthesis strategy is demonstrated to prepare Mo 3 P/Mo nanobelts with porous structure for the first time. The growth and formation mechanism of the porous Mo 3 P/Mo nanobelt structure was disclosed by varying the contents of H 2 /PH 3 and the reaction temperature. During the hydrogen evolution reaction (HER) catalysis, the optimized porous Mo 3 P/Mo nanobelts exhibited a small overpotential of 78 mV at a current density of 10 mA cm −2 and a low Tafel slope of 43 mV dec −1 , as well as long‐term stability in alkaline media, surpassing Pt wire. Density functional theory (DFT) calculations reveal that the H 2 O dissociation on the surface of Mo 3 P is favorable during the HER.