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Synthesis and Properties of Porous Hybrid Materials containing Metallic Nanoparticles
Author(s) -
Wilhelm M.,
Adam M.,
Bäumer M.,
Grathwohl G.
Publication year - 2008
Publication title -
advanced engineering materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.938
H-Index - 114
eISSN - 1527-2648
pISSN - 1438-1656
DOI - 10.1002/adem.200800019
Subject(s) - materials science , nanoparticle , microporous material , chemical engineering , metal , pyrolytic carbon , hybrid material , catalysis , porosity , sorption , heptane , contact angle , nanotechnology , organic chemistry , composite material , pyrolysis , metallurgy , adsorption , chemistry , engineering
Highly microporous hybrid materials with embedded Ni or Pt nanoparticles were prepared by pyrolytic conversion of polysiloxane – metal salt precursors and characterised in terms of surface area, sorption behaviour of water and n‐heptane, size and accessibility of metallic nanoparticles. Upon varying the amount of polysiloxanes carrying non‐polar and polar organic groups in the precursors the surface properties of hybrid materials could be altered from strongly hydrophobic to mainly hydrophilic. The size of metallic nanoparticles was influenced by the metal content and the presence of non‐reductive phenyl polysiloxane. In case of Pt, very small sizes in the nanometer regime (2–4 nm) could be obtained. During CO oxidation Pt containing ceramers showed high catalytic activity.