Dulub O, Hebenstreit W, Diebold U
Department of Physics, Tulane University, New Orleans, Louisiana 70118, USA.
Phys Rev Lett. 2000 Apr 17;84(16):3646-9. doi: 10.1103/PhysRevLett.84.3646.
Nanosized platinum clusters were grown on a TiO2(110) surface and annealed in ultrahigh vacuum at high temperatures. This leads to the so-called strong metal-support interaction (SMSI) state, characterized by a complete encapsulation of the clusters with a reduced titanium oxide layer. We present atomically resolved scanning tunneling microscopy measurements of the cluster surfaces and an atomic model of the SMSI state. The ability to resolve the cluster surface geometry with atomistic detail may help to identify the active sites responsible for the SMSI.
纳米尺寸的铂簇生长在TiO2(110)表面，并在超高真空中高温退火。这导致了所谓的强金属-载体相互作用（SMSI）状态，其特征是簇被还原的氧化钛层完全包裹。我们展示了簇表面的原子分辨扫描隧道显微镜测量结果以及SMSI状态的原子模型。以原子细节解析簇表面几何结构的能力可能有助于识别负责SMSI的活性位点。
