Open AccessNanoporous Silica from the Spray Reaction of Metal Solution Microdroplets with Silicon Tetrachloride
Author(s) -
Hiroshi Isobe,
Yoshiyuki Hattori,
Hirofumi Kanoh,
Kohzoh Yamamoto,
Katsumi Kaneko
Publication year - 2005
Publication title -
adsorption science and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.682
H-Index - 36
eISSN - 2048-4038
pISSN - 0263-6174
DOI - 10.1260/026361705774355450
Subject(s) - silicon tetrachloride , nanoporous , chemistry , microporous material , adsorption , nanoparticle , mesoporous silica , metal , mesoporous material , inorganic chemistry , nanopore , chemical engineering , x ray photoelectron spectroscopy , silicon dioxide , silicon , aluminium , catalysis , organic chemistry , engineering
Nanopore formation in silica, in which nanoparticles of metal compounds were embedded, was studied using analytical techniques such as SEM, XRD, XRF, XPS and nitrogen adsorption. Such metal compound nanoparticles formed between primary silica particles, providing micropores and mesopores caused by the formation of Si—O—M bonds (M = Al, Ni). Acid treatment dissolved the metal compound nanoparticles and destroyed the Si—O—M bonds, thereby increasing the micropore volume. The mesopore volume of the aluminium system increased on acid treatment, whereas that of the nickel system decreased.