Nanoporous detectors of monocyclic aromatic compounds and other pollutants
First Claim
1. A porous sol-gel material consisting essentially of:
- units of one or more first polyalkoxysilane(s) selected from the following compounds;
(chloromethyl)triethoxysilane;
1,3-dimethyltetramethoxydisiloxane;
ethyltrimethoxysilane;
triethoxy(ethyl)silane;
triethoxymethylsilane;
triethoxy(vinyl)silane;
trimethoxymethylsilane;
trimethoxy(vinyl)silane;
tetraethoxysilane and tetramethoxysilane (TMOS); and
units of one or more second polyalkoxysilane(s) selected from the following compounds;
(N-(3-(trimethoxysilyl)propyl)ethylenediamine;
3-amino-propyltriethoxysilane (APTES) and 3-aminopropyltrimethoxysilane in a first polyalkoxy-silane(s)/second polyalkoxysilane(s) mole ratio of 1/0.01 to 1/1;
wherein the porous sol-gel matrix is solid, self-standing and transparent to UV radiation; and
wherein the sol-gel material is prepared according to a process comprising;
mixing the first polyalkoxysilane(s), at a temperature of −
25 to −
15°
C., with a water-miscible organic solvent therefor, thenadding a second polyalkoxysilane(s),adding water; and
continuing stirring to obtain a sol and then the defined sol-gel.
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Accused Products
Abstract
Porous sol-gel material essentially consisting of units of one or more first polyalkoxysilanes chosen from the following compounds: (chloromethyl)triethoxysilane; 1,3-dimethyltetramethoxydisiloxane; ethyl trimethoxysilane; triethoxy(ethyl)silane; triethoxymethylsilane; triethoxy(vinyl)silane; trimethoxymethylsilane; trimethoxy(vinyl)silane; tetraethoxysilane or tetramethoxysilane (TMOS) and of units of one or more second polyalkoxysilanes chosen from the following compounds: (N-(3-(trimethoxysilyl)propyl)ethylenediamine; 3-aminopropyltriethoxysilane (APTES) and 3-aminopropyltrimethoxysilane, in a first polyalkoxysilane/second polyalkoxysilane molar ratio of 1/0.01 to 1/1, optionally comprising a probe molecule, method of preparation and applications in the trapping of monocyclic aromatic hydrocarbons and other pollutants or in their detection.
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Citations
34 Claims
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1. A porous sol-gel material consisting essentially of:
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units of one or more first polyalkoxysilane(s) selected from the following compounds;
(chloromethyl)triethoxysilane;
1,3-dimethyltetramethoxydisiloxane;
ethyltrimethoxysilane;
triethoxy(ethyl)silane;
triethoxymethylsilane;
triethoxy(vinyl)silane;
trimethoxymethylsilane;
trimethoxy(vinyl)silane;
tetraethoxysilane and tetramethoxysilane (TMOS); andunits of one or more second polyalkoxysilane(s) selected from the following compounds;
(N-(3-(trimethoxysilyl)propyl)ethylenediamine;
3-amino-propyltriethoxysilane (APTES) and 3-aminopropyltrimethoxysilane in a first polyalkoxy-silane(s)/second polyalkoxysilane(s) mole ratio of 1/0.01 to 1/1;
wherein the porous sol-gel matrix is solid, self-standing and transparent to UV radiation; andwherein the sol-gel material is prepared according to a process comprising; mixing the first polyalkoxysilane(s), at a temperature of −
25 to −
15°
C., with a water-miscible organic solvent therefor, thenadding a second polyalkoxysilane(s), adding water; and continuing stirring to obtain a sol and then the defined sol-gel. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A porous sol-gel material consisting essentially of:
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units of one or more first polyalkoxysilane(s) selected from the following compounds;
(chloromethyl)triethoxysilane;
1,3-dimethyltetramethoxydisiloxane;
ethyltrimethoxysilane;
triethoxy(ethyl)silane;
triethoxymethylsilane;
triethoxy(vinyl)silane;
trimethoxymethylsilane;
trimethoxy(vinyl)silane;
tetraethoxysilane or tetramethoxysilane (TMOS); andunits of one or more second polyalkoxysilane(s) selected from the following compounds;
(N-(3-(trimethoxysilyl)propyl)ethylenediamine;
3-amino-propyltriethoxysilane (APTES) and 3-aminopropyltrimethoxysilane, in a first polyalkoxy-silane(s)/second polyalkoxysilane(s) mole ratio of 1/0.01 to 1/1;
wherein the porous sol-gel matrix is solid, self-standing and transparent to UV radiation, wherein said porous sol-gel material is prepared according to the process comprising;mixing the first polyalkoxysilane(s), at a temperature of −
25 to −
15°
C., with a water-miscible organic solvent therefor, thenadding a second polyalkoxysilane(s), adding water, and continuing stirring to obtain a sol, placing the sol in a mold, and obtaining a solid, self-standing and transparent to UV radiation block of the defined sol-gel. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34)
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Specification