Fig. 4: HAADF-STEM analysis and STEM-EDS mapping of xPt/In-ZSM-5 catalysts upon reduction.
From: Confining platinum clusters in indium-modified ZSM-5 zeolite to promote propane dehydrogenation
a HAADF-STEM image of 1Pt/In-ZSM-5. Inset in (a) showed the particle size distribution. b STEM-EDS mapping of 1Pt/In-ZSM-5. c HAADF-STEM image of 0.3Pt/In-ZSM-5. Red and blue circles in (a) and (c) showed the single Pt atom and Pt clusters, respectively. d HAADF-STEM image of 0.05Pt/In-ZSM-5. e A zoomed-in image of the orange square in (d). Orange circles in (e) represented the less bright spots compared to the bright spots within the rectangular area. f Intensity profiles along the green area in (e). Note that the samples were reduced at 550 °C and then cooled down to room temperature before the TEM sample preparation.
