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![Recent progress of operando transmission electron microscopy in heterogeneous catalysis](https://image.oaes.cc/06027c43-8c9e-41f4-ac3a-d2f4cc9012f0/microstructures4003.fig.8.jpg)
Figure 8. (A) Correlation of oscillatory CO oxidation reaction data with the projected morphology of a Pt nanoparticle. (1-3) Mass spectrometry of the CO, O2 and CO2 pressures, reaction power and shape factor for the Pt nanoparticle in (4) as a function of time. (4) Time-resolved TEM images of a Pt nanoparticle at the gas exit of the reaction zone[67]. Copyright 2014 Springer Nature. (B) Restructuring of Pd nano-octahedron (1) and truncated nanocube (5) during an oscillatory CO oxidation reaction. And the plots of the measured temperature, heater power, and the corresponding amounts of the CO, O2, and CO2 gases during CO oxidation reaction of Pd nano-octahedron (2) and (3) and truncated nanocube (6) and (7). (4) The schematic of a truncated nanocube[68]. Copyright 2022, Springer Nature. (C) The images of the same Ru particle in the high (1) and low activity (2) states. (3) CO conversion obtained using both EELS and RGA is plotted for the operando experiment along with two calculated CO conversion curves based on an Arrhenius fit to plug flow reactor data[69]. Copyright 2021, American Chemical Society.