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Nanometer noble metal/POSS hybridized polymer micro sphere and preparation method thereof

A technology for hybridizing microspheres and precious metals, which is applied in the field of nano-precious metal/POSS-containing polymer hybrid microspheres and their preparation, and achieves the effects of high catalytic efficiency, good dispersibility and controllable content.

Active Publication Date: 2013-05-22
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] At present, there is no report on the preparation of noble metal / polymer hybrid microspheres by using POSS-containing polymerizable reverse micelles as the reactor and adopting the method of "assembly first and encapsulation later".

Method used

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  • Nanometer noble metal/POSS hybridized polymer micro sphere and preparation method thereof
  • Nanometer noble metal/POSS hybridized polymer micro sphere and preparation method thereof
  • Nanometer noble metal/POSS hybridized polymer micro sphere and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] (1) Preparation of POSS-containing amphiphilic polymer (POSS-MA-PEG-DPA)

[0039] The 5gPOSS (5.7×10 -3 mol), 0.56g (5.7×10 -3 mol) maleic anhydride (MA), 0.028g hydroquinone and 40mL toluene were uniformly miscible, nitrogen gas was passed, and POSS-MA was separated and purified after reaction at 90°C for 24 hours; 1g (1.03×10 -5 mol) POSS-MA, 2.05g (1.03×10 -5 mol) PEG1000, 0.015g of p-toluenesulfonic acid, 0.0255g of hydroquinone and 40mL of toluene were uniformly mixed, nitrogen gas was passed, and POSS-MA-PEG1000 was obtained after reaction at 135°C for 36 hours; 2g (6.77×10 -4 mol) POSS-MA-PEG1000, 0.1711g (6.77×10 -4 mol) 2,6-pyridinedicarboxylic acid (DPA), 0.0064g p-toluenesulfonic acid, 0.0106g hydroquinone and 40mL 1,4-dioxane are uniformly miscible, separated and purified after reacting at 125°C for 36 hours Contains POSS amphiphilic polymer POSS-MA-PEG1000-DPA.

[0040] (2) Nano-noble metal / POSS-containing polymer hybrid microspheres

[0041]First, di...

Embodiment 2~4

[0045] The same process as in Example 1, changing the feeding volumes of the chloroauric acid aqueous solution and the sodium borohydride aqueous solution in (2) to 0.05mL and 0.08mL, 0.12mL and 0.18mL, and 0.15mL and 0.23mL, respectively. The results are shown in Table 1.

Embodiment 5~7

[0047] With the process of Example 1, the types of noble metal acid compounds in (2) were changed to silver nitrate, chloroplatinic acid, and chloropalladium acid to obtain different types of nano-noble metal / POSS-containing polymer hybrid microspheres, and the results are shown in Table 2. .

[0048] Table 1

[0049]

[0050] Table 2

[0051]

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Abstract

The invention relates to a nanometer noble metal / POSS hybridized polymer micro sphere and a preparation method thereof. A POSS-end-capped amphiphilic polymer can be assembled into an aggregate type reverse micelle in a nonpolar solvent. The nanometer noble metal is prepared by using a water pool made of the reverse micelle as a reactor, and reverse micelle crosslinking is carried out finally to obtain stable hybridized polymer micro sphere containing nanometer noble metal. The invention provides a simple and easy method for preparing the nanometer noble metal / POSS hybridized polymer micro sphere by steps of carrying out assembling and encapsulating in sequence. The content and size of the noble metal can be realized by controlling the size of the water pool. A catalytic reduction test on the p-nitrophenol shows that the hybridized micro sphere has efficient catalytic performance. The nanometer noble metal / POSS hybridized polymer micro sphere and the preparation method thereof are expected to be applied to the fields of selectivity catalysis and biological medicine.

Description

technical field [0001] The invention belongs to the field of polymer-based organic-inorganic composite materials, and relates to a nano-precious metal / POSS-containing polymer hybrid microsphere and a preparation method thereof, in particular to a method of "assembling first and then encapsulating" using reverse micelles as nanoreactors Formed hybrid microspheres and methods for their preparation. Background technique [0002] Nano-noble metals have large specific surface area, high surface energy and exhibit unique stability, small size effect, quantum effect and surface effect, and have a wide range of applications in catalysis, optics, electricity and other fields. The hybrid microspheres composed of polymers and nano-noble metals not only retain the original characteristics of nano-materials, but also greatly improve the dispersion and solve the problem of easy agglomeration of nano-materials; at the same time, the introduction of polymers improves the The biocompatibili...

Claims

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Application Information

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IPC IPC(8): C08L71/08C08K3/08C08G65/48C08F283/06
Inventor 戴李宗陈凌南曾碧榕康启龙许一婷罗伟昂高辉陈国荣毛杰叶华立余世荣李聪何凯斌刘新瑜
Owner XIAMEN UNIV
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