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Atomic Layers of MoO 2 with Exposed High‐Energy (010) Facets for Efficient Oxygen Reduction
Author(s) -
Zhang Chao,
Zou Xiaolong,
Du Zhiguo,
Gu Jianan,
Li Songmei,
Li Bin,
Yang Shubin
Publication year - 2018
Publication title -
small
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.785
H-Index - 236
eISSN - 1613-6829
pISSN - 1613-6810
DOI - 10.1002/smll.201703960
Subject(s) - catalysis , materials science , nanocrystal , facet (psychology) , oxide , oxygen , monoclinic crystal system , chemical engineering , electrolyte , metal , transition metal , molybdenum , methanol , nanotechnology , inorganic chemistry , chemistry , crystallography , crystal structure , metallurgy , electrode , psychology , social psychology , biochemistry , organic chemistry , personality , engineering , big five personality traits
Although 2D nanocrystals with exposed high‐energy facets are highly desired in the field of catalysts due to their anticipant high catalytic activities, they are difficult to be gained. Here, atomic layers of metallic molybdenum dioxide (MoO 2 ) with primarily exposed high‐energy (010) facet are achieved via a facile carbothermic reduction approach. The resultant MoO 2 exhibits single‐crystalline, monoclinic, and ultrathin features with nearly 100% exposed (010) facet, which can significantly reduce reaction barriers toward the oxygen reduction reaction. As a consequence, the atomic layers of MoO 2 exhibit high electrocatalytic activity, excellent tolerance to methanol, and good stability for the oxygen reduction reaction in alkaline electrolyte, superior to commercial Pt/C catalysts. It is believed that such new transition metal oxide catalysts with exposed high‐energy facets have broad applications in the areas of energy storage and conversions.