Silly Fabien, Castell Martin R
Department of Materials, University of Oxford, Parks Road, Oxford OX1 3PH, UK.
J Phys Chem B. 2005 Jun 30;109(25):12316-9. doi: 10.1021/jp051358q.
Palladium nanocrystals were grown on a nanostructured SrTiO(3)(001) surface and annealed in ultrahigh vacuum at 620 degrees C. This leads to the so-called strong metal-support interaction (SMSI) state, characterized by encapsulation of the metal clusters with an oxide layer. Scanning tunneling microscopy (STM) of the oxide adlayer on the Pd(111) cluster surface reveals two superstructures with different lattice parameters and crystallographic rotations. Interpretation of the STM images is most readily achieved via noncommensurate TiO(x)() surface layers which result in two distinct Moiré patterns.
钯纳米晶体生长在纳米结构的SrTiO₃(001)表面，并在620℃的超高真空中退火。这导致了所谓的强金属-载体相互作用（SMSI）状态，其特征是金属簇被氧化层包裹。对Pd(111)簇表面上的氧化物吸附层进行扫描隧道显微镜（STM）观察，发现了两种具有不同晶格参数和晶体旋转的超结构。通过非共格的TiOₓ表面层可以最容易地解释STM图像，这会产生两种不同的莫尔条纹图案。
