fig10
![Recent progress of operando transmission electron microscopy in heterogeneous catalysis](https://image.oaes.cc/06027c43-8c9e-41f4-ac3a-d2f4cc9012f0/microstructures4003.fig.10.jpg)
Figure 10. (A) Concept of the cooperative characterization approach. (1) In situ TEM observes the morphological evolution of the material under different calcination conditions. (2) Cantilever-TGA gives the detailed calcination temperature and duration. (3) Cooperative characterization with in situ TEM and cantilever-TGA provides a comprehensive calcination parameter and can tune the product characteristics. (B) Calcination results of MnO2 nanowires under an N2 atmosphere. (1) SEM image of the resonant microcantilever for the cantilever-TGA measurements. (2) Cantilever-TGA curve of the MnO2 nanowires under an N2 atmosphere. Two mass-loss stages can be distinguished and correspond to the production of Mn2O3 and Mn3O4, respectively. (3) In situ TEM results of the MnO2 nanowires under an N2 atmosphere. (4) SAED patterns of the sample obtained at different temperatures. (5) Cs-corrected TEM images of the sample obtained at 600 °C for 1 h[70]. Copyright 2023, American Chemical Society.