TY - JOUR
T1 - Hybridisation of sebacic acid on the surface of γ-alumina nanoparticles in sub- And supercritical water
AU - Singh, Varu
AU - Takami, Seiichi
AU - Minami, Kimitaka
AU - Hojo, Daisuke
AU - Arita, Toshihiko
AU - Adschiri, Tadafumi
PY - 2010
Y1 - 2010
N2 - The surface modification of γ-alumina nanoparticles by sebacic acid in super- and subcritical water was investigated. The modified alumina was characterised by Fourier-transform infrared spectra, X-ray diffraction patterns, transmission electron microscopy images, and thermogravimetric studies. The alumina nanoparticles were found to remain stable, and sebacic acid was bound to their surfaces at 200 °C, but their crystallite structure was partially changed to that of boehmite above 200 °C. Under supercritical conditions at 400 °C, the alumina nanoparticles were totally changed to boehmite nanoparticles. The surface adsorption of sebacic acid is attributed to reactions between the surface-OH groups of alumina and the-COOH groups of sebacic acid. The modified alumina nanoparticles have-COOH groups on their surface, enabling hybridisation with various biomolecules, and thus allowing their application in several areas.
AB - The surface modification of γ-alumina nanoparticles by sebacic acid in super- and subcritical water was investigated. The modified alumina was characterised by Fourier-transform infrared spectra, X-ray diffraction patterns, transmission electron microscopy images, and thermogravimetric studies. The alumina nanoparticles were found to remain stable, and sebacic acid was bound to their surfaces at 200 °C, but their crystallite structure was partially changed to that of boehmite above 200 °C. Under supercritical conditions at 400 °C, the alumina nanoparticles were totally changed to boehmite nanoparticles. The surface adsorption of sebacic acid is attributed to reactions between the surface-OH groups of alumina and the-COOH groups of sebacic acid. The modified alumina nanoparticles have-COOH groups on their surface, enabling hybridisation with various biomolecules, and thus allowing their application in several areas.
KW - Nano alumina
KW - Supercritical and subcritical water
KW - Surface modification
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U2 - 10.1515/znb-2010-0811
DO - 10.1515/znb-2010-0811
M3 - Article
AN - SCOPUS:77955335796
SN - 0932-0776
VL - 65
SP - 1045
EP - 1050
JO - Zeitschrift fur Naturforschung - Section B Journal of Chemical Sciences
JF - Zeitschrift fur Naturforschung - Section B Journal of Chemical Sciences
IS - 8
ER -