Journal of Industrial and Engineering Chemistry, Vol.53, 317-324, September, 2017
Au/Co3O4/CeO2 heterostructures: Morphology controlling, junction formation and enhanced catalysis performance
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Co3O4 nanochain and Co3O4/CeO2 heterostructures were prepared via an electrospinning process and subsequent calcination. The formation and shape evolution from Co3O4 nanochains to Co3O4/CeO2 composite nanobelts were investigated, suggesting that both components and preparation parameters play important roles in resulted morphology and properties. Homogeneous Co3O4/CeO2 junctions in belt samples were formed towards enhanced catalysis performance. Well-dispersed Au nanoparticles were deposited on Co3O4/CeO2 composite nanostructures or doped inside through reduction and direct calcination route method, respectively. The loading of Au nanoparticles significantly enhanced catalytic performance with onset CO conversion at 100 °C and resulted in CO conversion over at 127 °C.
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