Mesoporous titania with aminated pores and its prepn process

A technology of mesoporous titanium oxide and amino functionalization, applied in chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc., can solve the problems of functionalization in pores and applications that have not been reported, and achieve the method The effect of simplicity, large specific surface area, and broad application prospects

Inactive Publication Date: 2007-06-06
NANJING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The research on mesoporous titanium oxide is relatively concentrated on the synthesis, and there is no report on the functionalization and application of the pores.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Dissolve 2g of nonionic surfactant P123 in 30mL of anhydrous EtOH, stir in a 40-degree water bath for 30 minutes until clear, add 3.40g of butyl titanate and 0.02g of aminopropyl-triethoxysilylation reagent APTES, Celsius After stirring for 15 min at 40 degrees, the prepared ethanol-water solution [EtOH:H 2 O=20:0.8 (V / V), containing 18.3 ml of absolute ethanol, 0.73 ml of deionized water], stirred in a 40-degree water bath for 24 hours, and the obtained solution was evaporated to dryness in an 80-degree water bath. The obtained pale yellow gel was added to 50 mL of anhydrous EtOH, stirred at 40 degrees for 15 min, and filtered. pH=6-7 was maintained during the synthesis. 30 mL of anhydrous EtOH was added to the precipitation, stirred at 40 degrees for 30 min, and filtered; 30 mL of anhydrous ethanol was added twice and filtered, and the obtained solid was dried in a drying box at 100 degrees for 24 hours to obtain the product. The small-angle powder X-ray diffraction...

Embodiment 2

[0029] Dissolve 2g of nonionic surfactant P123 in 30mL of anhydrous EtOH, stir in a 30-degree water bath for 40 minutes until clear, add 3.40g of butyl titanate and 0.04g of aminopropyl-triethoxysilylation reagent APTES, Celsius After stirring for 20 min at 30 degrees, the prepared ethanol-water solution [EtOH:H 2 O=20:0.8 (V / V), containing 18.3 ml of absolute ethanol, 0.73 ml of deionized water], stirred in a 30-degree water bath for 24 hours, and the obtained solution was evaporated to dryness in an 80-degree water bath. The obtained pale yellow gel was added with 50 mL of anhydrous EtOH, stirred at 40 degrees for 15 min, and filtered. During the synthesis, pH=6-7 was maintained. 30 mL of anhydrous EtOH was added to the precipitation, stirred at 40 degrees for 30 min, and filtered; 30 mL of anhydrous ethanol was added twice and filtered, and the obtained solid was dried in a drying box at 100 degrees for 24 hours to obtain the product. The small-angle powder X-ray diffract...

Embodiment 3

[0031] Dissolve 2 g of nonionic surfactant P123 in 30 mL of anhydrous EtOH, stir in a 50-degree water bath for 20 minutes until it becomes clear, add 3.40 g of butyl titanate and 0.11 g of aminopropyl-triethoxy silylation reagent APTES, Celsius After stirring for 10 min at 50 degrees, the prepared ethanol-water solution [EtOH:H 2 O=20:0.8 (V / V), containing 19.0 ml of absolute ethanol, 0.76 ml of deionized water], stirred in a 50-degree water bath for 24 hours, and the obtained solution was evaporated to dryness in an 80-degree water bath. The obtained pale yellow gel was added to 50 mL of anhydrous EtOH, stirred at 50 degrees for 15 min, and filtered. During the synthesis, pH=6-7 was maintained. 30 mL of anhydrous EtOH was added to the precipitation, stirred at 50 degrees for 30 min, and filtered; 30 mL of anhydrous ethanol was added twice and filtered, and the obtained solid was dried in a drying box at 100 degrees for 24 hours to obtain the product. The small-angle powder X-...

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PUM

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Abstract

The present invention discloses one kind of amino radical functionated mesoporous titania and its preparation process. The amino radical functionated mesoporous titania is prepared through in-situ synthesis of amino radical hole wall inside a sol-gel system in a near neutral condition and low temperature, and implanting functionated mesoporous titania. It includes inorganic oxide skeleton Ti-O-Ti and Ti-O-Si and amino radical substituted alkyl radical -CnH2nNH2 connected with Si, and has the characteristic molecular expression of (TiO2)x(SiO3/2-CnH2nNH2)y, where x is 0-100 and y is 0-1. The preparation process is simple and environment friendly without acid solution exhaust. The synthesized mesoporous titania may be used as photocatalyst directly and as the substrate material for assembling organic molecule through chemical reaction. The present invention may find wide application in various fields.

Description

1. Technical field [0001] The invention relates to a new chemically modified amino-functional titanium oxide mesoporous material, in particular to a mesoporous titanium oxide functionalized with amino groups in the pores and a preparation method thereof. 2. Background technology [0002] Titanium oxide has been widely concerned by researchers for its unique photophysical and chemical properties. As a representative of photocatalytic materials, it has a wide range of applications in catalytic organic synthesis, degradation of environmental toxicants, drug loading, and optoelectronic devices. In terms of morphology and structure, in addition to large particle size powdered titanium oxide, there are also a lot of reports on the synthesis of nano-sized titanium oxide in recent years. Mesoporous titanium oxide is a non-silicon mesoporous material that has become a research hotspot after the successful synthesis of all-silicon mesoporous materials. and photocatalytic activity, s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J21/06
Inventor 王英雪岷黄丽王建强朱建华邹志刚范晓星于涛李朝升祝梅
Owner NANJING UNIV
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