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Supercritical Hydrothermal Synthesis of Silicon‐Functional Metal and Metal Oxide Nanoparticles
Author(s) -
Ogawa Takuya,
Furudate Manabu,
Oshima Yoshito
Publication year - 2009
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.200801130
Subject(s) - supercritical fluid , nanoparticle , chemistry , metal , silicon , hydrothermal circulation , chemical engineering , copper , hydrothermal synthesis , oxide , surface modification , silicone , inorganic chemistry , nanotechnology , organic chemistry , materials science , engineering
A supercritical hydrothermal reaction was applied to synthesise silicon‐functional metal and metal oxide nanoparticles. The Si‐functionalised nanoparticles were formed by the hydrothermal reaction of metal salts and subsequent surface modification of the resultant particles by organofunctional silicon compounds. The metal salts studied were copper nitrate and acetate. Si‐functionalised copper nanoparticles with a size below 10 nm were formed when an epoxy‐functional silicone compound was used. The compositions, shapes and sizes of the resultant particles proved to be affected by the structures of the silicon compounds. As for the properties, the resultant particles were hydrophobic while nonfunctional particles were hydrophilic. This methodology can be potentially applied to the synthesis of Si‐based nanohybrid materials in which such surface‐modified nanoparticles are well dispersed in a polysiloxane matrix. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2009)