Morphology of Palladium Thin Film Deposited on a Two-Dimensional Bilayer Aluminosilicate

  • Nusnin Akter
  • Jerzy T. Sadowski
  • Chen Zhou
  • Jian-Qiang Zhong
  • Matthijs van Spronsen
  • Yixin Xu
  • Xiao Tong
  • Taejin Kim
  • Samuel Tenney
  • Ashley R. Head
  • Dario J. Stacchiola
  • J. Anibal BoscoboinikEmail author
Original Paper


The morphology of a thin palladium film deposited on bilayer Al0.35Si0.65O2/Ru(0001), previously proposed as a two-dimensional zeolite model, is investigated using a set of complementary spectroscopy and microscopy tools. Pd single atoms are known to penetrate the bilayer silica, but when a thick Pd film is deposited on the aluminosilicate case some of the metal remains on top of the bilayer oxide. Annealing this surface results in a decrease in the Pd/Si ratio seen in X-ray photoelectron spectroscopy, indicating either further permeation of Pd, or dewetting of surface Pd to form nanoparticles and leave aluminosilicate exposed. An interesting observation is that two very distinct morphologies are obtained for the film. On small narrow terraces, flat wetting films are produced, while on larger terraces Pd particles leaving a partially exposed bilayer aluminosilicate framework are obtained.

Graphic Abstract


Thin film Surface science 2D-silica 2D-zeolite Catalysis Metal-support interaction 



This research used resources of the Center for Functional Nanomaterials and the IOS, and ESM beamlines at the National Synchrotron Light Source II, which are U.S. DOE Office of Science User Facilities, at Brookhaven National Laboratory under Contract No. DE-SC0012704. J.Q. Zhong was supported by BNL LDRD Project No. 15-010. This work was supported as part of the Integrated Mesoscale Architectures for Sustainable Catalysis (IMASC), an Energy Frontier Research Center funded by the U.S. Department of Energy, Office of Science, Basic Energy Sciences under award #DE-SC0012573. We thank Dr. Zhongwei Dai for useful discussions.

Supplementary material

11244_2019_1193_MOESM1_ESM.docx (643 kb)
Supplementary material 1 (DOCX 643 kb)


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Copyright information

© This is a U.S. Government work and not under copyright protection in the US; foreign copyright protection may apply 2019

Authors and Affiliations

  • Nusnin Akter
    • 1
    • 2
  • Jerzy T. Sadowski
    • 1
  • Chen Zhou
    • 1
    • 2
  • Jian-Qiang Zhong
    • 1
  • Matthijs van Spronsen
    • 3
  • Yixin Xu
    • 1
    • 2
  • Xiao Tong
    • 1
  • Taejin Kim
    • 2
  • Samuel Tenney
    • 1
  • Ashley R. Head
    • 1
  • Dario J. Stacchiola
    • 1
  • J. Anibal Boscoboinik
    • 1
    Email author
  1. 1.Brookhaven National LaboratoryCenter for Functional NanomaterialsUptonUSA
  2. 2.Materials Science and Chemical Engineering DepartmentStony Brook UniversityStony BrookUSA
  3. 3.Department of Chemistry and Chemical BiologyHarvard UniversityCambridgeUSA

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