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The modification of Co3O4 by Bi2O3 significantly enhanced its catalytic performance for CO oxidation. The 20wt.% Bi2O3-Co3O4 exhibited the best catalytic performance. The results of H2-TPR and CO-TPR revealed that the mobility of oxygen was accelerated greatly and the ability of low-temperature oxygen activation was the crucial factor to improve the catalytic performance. Bi2O3 entered the lattice...
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