• 文献标题:   Graphene-Templated Growth of Pd Nanoclusters
  • 文献类型:   Article
  • 作  者:   GOTTERBARM K, STEINER C, BRONNBAUER C, BAUER U, STEINRUCK HP, MAIER S, PAPP C
  • 作者关键词:  
  • 出版物名称:   JOURNAL OF PHYSICAL CHEMISTRY C
  • ISSN:   1932-7447 EI 1932-7455
  • 通讯作者地址:   Univ Erlangen Nurnberg
  • 被引频次:   17
  • DOI:   10.1021/jp5052563
  • 出版年:   2014

▎ 摘  要

Graphene grown on Rh(111) was used as a template for the growth of Pd nanoclusters. Using high-resolution synchrotron radiation-based X-ray photoelectron spectroscopy, we studied the deposition of Pd on corrugated graphene in situ. From the XP spectra, we deduce a cluster-by-cluster growth mode. The formation of clusters with 3 nm diameter was confirmed by low-temperature scanning tunneling microscopy measurements. The investigation of the thermal stability of the Pd particles showed three characteristic temperature regimes: Up to 550 K restructuring of the particles takes place, between 550 and 750 K the clusters coalesce into larger agglomerates, and finally between 750 and 900 K Pd intercalates between the graphene layer and the Rh surface.