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Synthesis of Monodispere Au@Co 3 O 4 Core‐Shell Nanocrystals and Their Enhanced Catalytic Activity for Oxygen Evolution Reaction
Author(s) -
Zhuang Zhongbin,
Sheng Wenchao,
Yan Yushan
Publication year - 2014
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201400336
Subject(s) - nanocrystal , dispersity , materials science , catalysis , oxygen evolution , nanotechnology , shell (structure) , chemical engineering , chemistry , organic chemistry , polymer chemistry , electrode , composite material , engineering , electrochemistry
Novel OER catalysts – monodisperse Au@Co 3 O 4 core‐shell nanocrystals – have been prepared by synthesizing Au nanocrystals, followed by deposition of Co shells and their conversion to Co 3 O 4 shells. Owing to the synergistic effect, Au@Co 3 O 4 nanocrystals have an OER activity 7 times as high as a Au and Co 3 O 4 nanocrystals mixture or Co 3 O 4 nanocrystals alone, and 55 times as high as Au nanocrystals alone.