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Hydrothermal Synthesis of a Novel Double‐Sided Nanobrush Co 3 O 4 Catalyst and Its Catalytic Performance for Benzene Oxidation
Author(s) -
Ma Xiuyun,
Yu Xiaolin,
Yang Xueqin,
Lin Mengya,
Ge Maofa
Publication year - 2019
Publication title -
chemcatchem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.497
H-Index - 106
eISSN - 1867-3899
pISSN - 1867-3880
DOI - 10.1002/cctc.201801539
Subject(s) - catalysis , hydrothermal circulation , benzene , oxygen , chemistry , materials science , water vapor , inorganic chemistry , chemical engineering , organic chemistry , engineering
A double‐sided nanobrush Co 3 O 4 (Co 3 O 4 −B) catalyst was successfully prepared by a hydrothermal method for the first time, and Co 3 O 4 rods (Co 3 O 4 −R), Co 3 O 4 hexagonal plates (Co 3 O 4 −H) and Co 3 O 4 double‐sided helianthus discs (Co 3 O 4 −D) were also synthesized through tuning the water/ethanol ratio. Among all of the as‐prepared catalysts, the Co 3 O 4 −B catalyst exhibited the best catalytic activity for benzene oxidation. The excellent catalytic performance could be attributed to the surface abundance Co 3+ species, good low‐temperature reducibility and high number of lattice defects with substantial active oxygen species, which resulted from the unique structure of the double‐sided nanobrush. The stability and water tolerance tests demonstrated that the Co 3 O 4 −B catalyst displays excellent stability for benzene combustion, and the deactivation caused by water vapor is also reversible. It is concluded that the unique structure of the catalysts plays a crucial role in determining its catalytic oxidation performance.