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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 27, Number 9
BKCSDE 27(9)
September 20, 2006

Title	Chemical Bonding Nature and Mesoporous Structure of Nickel Intercalated Montmorillonite Clay
Author	Hye Mi Park, Tae Woo Kim, Seong-Ju Hwang, Jin-Ho Choy
Keywords	Ni-intercalated montmorillonite clay, Nanohybrid, Mesoporosity, Exfoliation-restacking, House-of-card structure
Abstract	Mesoporous nickel intercalated aluminosilicate nanohybrid has been synthesized through a recombination reaction between the colloidal suspension of exfoliated montmorillonite nanosheets and aqueous nickel acetate solution. According to powder X-ray diffraction and field emission-scanning electron microscopic analyses, the intercalation of nickel species expands significantly the basal spacing of the host montmorillonite clay and the crystallites of the intercalation compound are assembled to form a house-of-card structure. N₂ adsorptiondesorption isotherm measurements with BJH pore analyses clearly demonstrated that the porosity of the intercalate originates mainly from mesopores (diameter ~50 A) formed by the house-of-card type stacking of clay crystallites. From FT-IR and X-ray absorption spectroscopic analyses, it becomes certain that intercalated nickel ion is stabilized in an isolated NiO₆ octahedral unit. The present mesoporous intercalation compound is expected to be applicable as efficient catalysts or absorbents.
Page	1323 - 1328
Full Text	PDF

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