High-resolution electron microscopic investigation of supported platinum particles reduced at high temperatures.
High-resolution electron microscopy has been used to characterize the platinum particles supported on TiO2 or ZnO. After reduction at elevated temperatures, the metallic particles display a regular, faceted shape, and several superstructures, Pt3 Ti(C), Pt3 Ti(H), PtTi, and PtZn, have been found. These results, which may involve strong metal-support interaction, have been confirmed by optical diffraction and image simulation.
Wang
L
L
Laboratory of Atomic Imaging of Solids, Academia Sinica, Shenyang, People's Republic of China.
Qiao
G W
GW
Ye
H Q
HQ
Kuo
K H
KH
Chen
Y X
YX
D006358:Hot Temperature; D008854:Microscopy, Electron; D010084:Oxidation-Reduction; D010316:Particle Size; D010984:Platinum; D014025:Titanium; D015034:Zinc Oxide
C009495:titanium dioxide; D010984:Platinum; D014025:Titanium; D015034:Zinc Oxide