Fig. 5
From: Evolution and stabilization of subnanometric metal species in confined space by in situ TEM
Stability test of 0.17%Pt@MCM-22-300H2 under CO + NO conditions. During the in situ TEM experiments, the sample was treated in mixture of CO (0.1 torr) and NO (0.1 torr) for 15 min at different reaction temperature, respectively. In order to avoid the carbon deposition of CO by the electron beam, the TEM chamber was evacuated to remove CO gas after exposure of the sample to CO+NO gases. a 200 °C, b 400 °C, c 600 °C, d 800 °C, e 1,000 °C, f 1,200 °C. Scale bar in all the images in this figure: 20 nm
