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Optical resonance composite material in noble metal/titanium dioxide micro-nano structure

A technology of micro-nano structure, titanium dioxide, applied in other chemical processes, chemical instruments and methods, etc.

Inactive Publication Date: 2013-08-14
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, TiO with various shapes such as solid spheres, hollow spheres, mesoporous spheres, nanotubes, nanorods, etc. 2 Particles have basically been able to achieve effective control of synthesis, but it is still a great challenge to prepare noble metal / titania optical resonance composites with micro-nano structure

Method used

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  • Optical resonance composite material in noble metal/titanium dioxide micro-nano structure
  • Optical resonance composite material in noble metal/titanium dioxide micro-nano structure
  • Optical resonance composite material in noble metal/titanium dioxide micro-nano structure

Examples

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Embodiment 1

[0020] Titanium tetrachloride was added dropwise to deionized water under ice bath conditions to prepare a titanium tetrachloride aqueous solution with a mass fraction of 50 wt%, and the aqueous solution was refrigerated in a refrigerator for subsequent use; 0.2 g of silver nitrate was dissolved in 1 ml of deionized water Prepared into silver nitrate aqueous solution. First, 4 grams of n-butyl titanate was added to 30 ml of toluene, and stirred in an ice bath for 0.5 hours; then all the prepared silver nitrate aqueous solution was added to the toluene aqueous solution of n-butyl titanate and stirred for 0.5 hours; then Add 4ml of titanium tetrachloride aqueous solution with a mass fraction of 50wt%, and magnetically stir for 1 hour; finally move the mixed system into a stainless steel autoclave lined with polytetrafluoroethylene, wherein the volume of the reactant is about 80% of the volume of the autoclave. %, put the reactor into a constant temperature drying oven and react ...

Embodiment 2

[0022] Titanium tetrachloride was added dropwise to deionized water under ice bath conditions to prepare a titanium tetrachloride aqueous solution with a mass fraction of 50 wt%, and the aqueous solution was refrigerated in a refrigerator for subsequent use; 0.5 g of silver nitrate was dissolved in 1 ml of deionized water Prepared into silver nitrate aqueous solution. First, 4 grams of n-butyl titanate was added to 30 ml of toluene, and stirred in an ice bath for 0.5 hours; then all the prepared silver nitrate aqueous solution was added to the toluene aqueous solution of n-butyl titanate and stirred for 0.5 hours; then Add 4ml of titanium tetrachloride aqueous solution with a mass fraction of 50wt%, and magnetically stir for 1 hour; finally move the mixed system into a stainless steel autoclave lined with polytetrafluoroethylene, wherein the volume of the reactant is about 80% of the volume of the autoclave. %, put the reactor into a constant temperature drying oven and react ...

Embodiment 3

[0024] Titanium tetrachloride was added dropwise to deionized water under ice bath conditions to prepare a titanium tetrachloride aqueous solution with a mass fraction of 50 wt%, and the aqueous solution was refrigerated in a refrigerator for subsequent use; 1.0 g of silver nitrate was dissolved in 1 ml of deionized water Prepared into silver nitrate aqueous solution. First, 4 grams of n-butyl titanate was added to 30 ml of toluene, and stirred in an ice bath for 0.5 hours; then all the prepared silver nitrate aqueous solution was added to the toluene aqueous solution of n-butyl titanate and stirred for 0.5 hours; then Add 4ml of titanium tetrachloride aqueous solution with a mass fraction of 50wt%, and magnetically stir for 1 hour; finally move the mixed system into a stainless steel autoclave lined with polytetrafluoroethylene, wherein the volume of the reactant is about 80% of the volume of the autoclave. %, put the reactor into a constant temperature drying oven and react ...

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Abstract

The invention relates to a composite material in a precious metal / titanium dioxide micro-nano structure, in particular to an optical resonance composite material in a noble metal / titanium dioxide micro-nano structure and a preparation method thereof. The material belongs to a quasi monodisperse floccular micro-nano structure grain with the grain diameter between 300 nm and 3 mum formed by self assembly by nanometer rods with the diameter between 30 and 50 nm and the length between 100 and 500 nm. The material has the main ingredients of titanium dioxide and noble metal of silver or gold, wherein the mol ratio of titanium to silver or gold is 1 / 0.05 to 0.5. The material has special optical transmission performance in the visible light wave band. The method for preparing the material is a solvent thermosynthesis method, the preparation process is simple, the yield is high, and the grain diameter, the microcosmic appearance, the structure and the performance of the grains can all realize the effective control and regulation. The accompanying drawing shows the scanning electron microscope photos of the composite material in the silver / titanium dioxide micro-nano structure when the mol ratio of the titanium to the sliver is 1 / 0.25.

Description

technical field [0001] The invention relates to a micro-nano structure composite material and a preparation method thereof, in particular to a noble metal / titanium dioxide micro-nano structure optical resonance composite material and a preparation method thereof. Background technique [0002] Micro-nanostructure refers to a special structural form formed by introducing nanostructures into micron-scale structural units. In recent years, studies have found that the miraculous functions of many organisms in nature are related to the micro-nano structures on their body surfaces. For example, the surface of lotus leaves has superhydrophobicity and self-cleaning function because there are nano-structures on the micro-papillae on the surface of lotus leaves; geckos can Crawling freely on smooth vertical walls and ceilings is due to the complex micro-nano layered villi structure of the feet; water striders can walk, run, and jump on the water surface as on the ground because their l...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K3/00
Inventor 赵晓鹏向礼琴
Owner NORTHWESTERN POLYTECHNICAL UNIV
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