Engineering Co3+-rich crystal planes on Co3O4 hexagonal nanosheets for CO and hydrocarbons oxidation with enhanced catalytic activity and water resistance
- Resource Type
- Authors
- Daiqi Ye; Anqi Li; Yun Zhao; Tingyu Chen; Tan Li; Yuanyuan Meng; Yongcai Qiu; Jiajin Lin; Yifei Li; Xiaojing Jin; Shuaiqi Zhao; Leneng Yang; Peng Wu; Guangxu Chen
- Source
- Chemical Engineering Journal. 420:130448
- Subject
- Materials science
General Chemical Engineering
chemistry.chemical_element
02 engineering and technology
General Chemistry
010402 general chemistry
021001 nanoscience & nanotechnology
01 natural sciences
Toluene
Oxygen
Industrial and Manufacturing Engineering
Methane
0104 chemical sciences
Catalysis
Metal
Crystal
chemistry.chemical_compound
chemistry
Chemical engineering
Catalytic oxidation
visual_art
visual_art.visual_art_medium
Environmental Chemistry
Density functional theory
0210 nano-technology
- Language
- ISSN
- 1385-8947
Crystal facet engineering plays a key role in the development of non-noble metal-based catalysts to be applicable in removal of atmospheric pollutants. Herein, we report a facile and effective reflux strategy for manipulating the exposed {1 1 2} crystal facets of Co3O4 hexagonal nanosheets with enhanced catalytic activity and water resistance for CO and hydrocarbons (methane and toluene) oxidation. Temperature-programmed techniques and density functional theory (DFT) calculations demonstrate the process that surface lattice oxygen on Co3O4 (1 1 2) activates the first C–H bond to form oxygen vacancies (1.84 eV) is easier than that (3.12 eV) on Co3O4 (1 1 1) while activation barrier (2.00 eV) on Co3O4 (1 1 2) from CO2 to bicarbonates is higher than that (0.60 eV) on Co3O4 (1 1 1), as a result of boosting catalytic oxidation and water resistance. The present work demonstrates that crystal facet engineering is a potential route to improve water resistance of Co3O4 catalysts with highly promising in practical application.