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Tunable Surface Oxidation States in Si/SiO 2 Nanostructures Prepared from Si/SiO 2 Mixtures and Phenol Hydroxylation Activity
Author(s) -
Gole James L.,
Shinall Brian D.,
Iretskii Alexei V.,
White Mark G.,
Carter W. Brent,
Erickson Ann S.
Publication year - 2003
Publication title -
chemphyschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.016
H-Index - 140
eISSN - 1439-7641
pISSN - 1439-4235
DOI - 10.1002/cphc.200300719
Subject(s) - catalysis , fumed silica , phenol , hydroxylation , silicon , adsorption , chemical engineering , dispersity , alcohol oxidation , materials science , nanostructure , chemistry , inorganic chemistry , nanotechnology , organic chemistry , engineering , enzyme
Active spheres : Nearly monodisperse Si/SiO 2 nanospheres (see graphic) with a tunable silicon‐to‐oxygen ratio have been synthesized and analyzed with respect to their average Si oxidation states. The metalloid oxides are synthesized in a two‐step generalizable process in the absence of liquid solvents, which is an environmentally friendly method for preparation of an adsorbent and catalyst with an activity much higher than that of fumed silica in the phenol hydroxylation reaction.