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. 2024 Jul 12;14(14):1190. doi: 10.3390/nano14141190

Figure 4.

Figure 4

(a) The reaction mechanism of CO oxidation over the In2O3@Pd–Co3O4 catalyst reproduced from ref. [108]; (b,c) SEM images, (d–f) TEM images, and (g) HRTEM images of the MnO2–Co3O4 hollow spheres reproduced from ref. [109].