Polyionic nanoclays
AssigneeThe Curators of the University of Missouri
InventorsGary A Baker, Nathaniel E. Larm
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Abstract
Disclosed herein are organic-inorganic hybrid materials, in particular polyionic nanoclays, along with methods of making and using the same. The functionalized organic-inorganic hybrid materials are preferably of a phyllosilicate structure and comprise an octahedral ionic layer sandwiched between two tetrahedral layers, one or more charged chemical moieties covalently bonded to the tetrahedral layers, and optionally one or more counterions or functional groups associated with the hybrid materials. Methods of producing the same, by contacting a silane with a nucleophile and hydrolyzing the product thereof in the presence of a metal salt, are also provided.
Claims20
A functionalized organic-inorganic hybrid material comprising:
- an inorganic metal silicate clay nanosheet having a surface and comprising an inorganic metal and a plurality of silicone atoms;
- wherein the surface is modified by covalent attachment with a plurality of charged organic moieties;
- and
- wherein the charged organic moieties are covalently bound to the silicon atoms at the surface.
A method of synthesizing a functionalized organic-inorganic hybrid material comprising:
- (i) reacting at least one non-ionic silane with at least one nucleophile to generate at least one ionic organosilane having a plurality of charged organic moieties;
- wherein the charged organic moieties are covalently bound to the organosilane;
- and
- (ii) reacting the ionic organosilane with a metal salt to form a functionalized organic-inorganic hybrid material comprising a clay nanosheet having a surface and comprising an inorganic metal and a plurality of silicone atoms;
- wherein the surface is modified by covalent attachment with a plurality of organic moieties;
- and wherein the charged organic moieties are covalently bound to the silicon atoms at the surface.
A method of using a functionalized organic-inorganic hybrid material comprising:
- (i) preparing a functionalized organic-inorganic hybrid material by reacting at least one non-ionic silane with at least one nucleophile to generate at least one ionic organosilane having a plurality of charged organic moieties;
- wherein the charged organic moieties are covalently bound to the ionic organosilane;
- and reacting the ionic organosilane with a metal salt to form a functionalized organic-inorganic hybrid material comprising a clay nanosheet having a surface and comprising an inorganic metal and a plurality of silicone atoms;
- wherein the surface is modified by covalent attachment with a plurality of organic moieties;
- and wherein the charged organic moieties are covalently bound to the silicon atoms at the surface;
- and
- (ii) using the functionalized organic-inorganic hybrid material.
Dependencies are inferred from the claim text.