Palladium infiltration in high surface area microporous silica nanoparticles

Jun Wang, Jennifer A. Nelson, William B. White, Peter C. Eklund, James H. Adair

Research output: Contribution to journalArticlepeer-review

4 Scopus citations


Metallic Pd clusters were embedded into a host matrix of microporous SiO2 nanoparticles via a solution reduction of Pd(NO3)2 by hydrazine hydrate. The infiltration of 33 wt.% Pd leads to a 13% porosity loss of SiO2 nanoparticles, which demonstrated an initial surface area of 748 m2/g. The presence of Pd in the pores was demonstrated by EDS spectroscopy and by X-ray diffraction. The metallic guest species presumably reside in the accessible micropores with an estimated size about 1.3 nm. Hydrogen uptake was measured for Pd-infiltrated SiO2 nanoparticles. A possible mechanism for the formation of composite nanoparticles is proposed based on electrostatic interaction between Pd2+ and SiO2 nanoparticles.

Original languageEnglish (US)
Pages (from-to)3573-3576
Number of pages4
JournalMaterials Letters
Issue number29-30
StatePublished - Dec 2006

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering


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