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Porous Molybdenum‐Based Hybrid Catalysts for Highly Efficient Hydrogen Evolution
Author(s) -
Tang YuJia,
Gao MinRui,
Liu ChunHui,
Li ShunLi,
Jiang HaiLong,
Lan YaQian,
Han Min,
Yu ShuHong
Publication year - 2015
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201505691
Subject(s) - tafel equation , graphene , carbonization , catalysis , polyoxometalate , materials science , exchange current density , oxide , molybdenum , chemical engineering , carbon fibers , metal , inorganic chemistry , hydrogen , metal organic framework , composite number , nanotechnology , chemistry , composite material , metallurgy , electrode , organic chemistry , electrochemistry , adsorption , scanning electron microscope , engineering
We have synthesized a porous Mo‐based composite obtained from a polyoxometalate‐based metal–organic framework and graphene oxide (POMOFs/GO) using a simple one‐pot method. The MoO 2 @PC‐RGO hybrid material derived from the POMOFs/GO composite is prepared at a relatively low carbonization temperature, which presents a superior activity for the hydrogen‐evolution reaction (HER) in acidic media owing to the synergistic effects among highly dispersive MoO 2 particles, phosphorus‐doped porous carbon, and RGO substrates. MoO 2 @PC‐RGO exhibits a very positive onset potential close to that of 20 % Pt/C, low Tafel slope of 41 mV dec −1 , high exchange current density of 4.8×10 −4 A cm −2 , and remarkable long‐term cycle stability. It is one of the best high‐performance catalysts among the reported nonprecious metal catalysts for HER to date.