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A kind of nano-gold/silsesquioxane-containing polymer hybrid particle and preparation method thereof

A technology of silsesquioxane and hybrid particles, which is applied in the field of nano-gold/silsesquioxane-containing polymer hybrid particles and its preparation, can solve the problem of high-activity supported nano-gold catalysts that have not been reported, precious metal gold Problems such as unreliable loading and large nanoparticles achieve good application value, good stability and simple steps

Active Publication Date: 2016-09-07
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method requires secondary modification of the surface of the carrier microspheres, the process is complex and the precious metal gold loading is not reliable.
Shao Zhigang et al. (A method for preparing Pd@Pt core-shell catalysts for low-temperature fuel cells, Chinese patent, publication number CN103028396A) disclosed a one-step method for preparing Pd@Pt core-shell catalysts, which is simple, environmentally friendly and energy-saving advantages, the prepared core-shell structure catalysts showed a higher area specific activity and catalytic activity per unit mass of Pt for redox reactions, but the method obtained nanoparticles larger (about 20nm), and on the carrier poor distribution
[0006] At present, highly active supported nano-gold catalysts using POSS-containing polymers as supports have not been reported.

Method used

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  • A kind of nano-gold/silsesquioxane-containing polymer hybrid particle and preparation method thereof
  • A kind of nano-gold/silsesquioxane-containing polymer hybrid particle and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0034] 5g of aminopropyl POSS, 0.56g of MA, 0.028g of hydroquinone and 40mL of toluene were uniformly mixed, nitrogen was passed, and POSS-MA was separated and purified after reacting at 90°C for 24 hours; 1g of POSS-MA, 4.10g of PEG2000 , 0.015g of p-toluenesulfonic acid, 0.0255g of hydroquinone and 40mL of toluene are uniformly mixed, nitrogen gas is passed, and POSS-MA-PEG2000 is obtained by separation and purification after reacting at 135°C for 36 hours. The final yield was 90%.

[0035] Take 0.3g of the separated and purified POSS-MA-PEG2000 and dissolve it in 20mL of tetrahydrofuran, take 6mL of it and slowly add it dropwise to 100mL of deionized water under the condition of ultrasonic stirring, leave it open for one day to volatilize the tetrahydrofuran, and obtain POSS-containing Polymer Micellar Solution.

[0036] Take 2mL of chloroauric acid solution with a concentration of 10mmol / L, and slowly drop it into the above-mentioned polymer micelle solution containing PO...

Embodiment 2

[0038] Get 0.04mg of the hybrid particle in Example 1, add it to 2mL of p-nitrophenol solution with a concentration of 5mmol / L, then add excess NaBH 4 solution and allowed to react at room temperature. Using UV-vis to track and observe the catalytic effect, the catalytic conversion rate was 99.2% within 10 minutes.

Embodiment 3

[0040]Get 0.04mg of the hybrid particle in Example 1, add it to 2mL of nitrobenzene solution with a concentration of 5mmol / L, and then add excess NaBH 4 solution and allowed to react at room temperature. Using UV-vis to track and observe the catalytic effect, the catalytic conversion rate is 94.9% in 10 minutes

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Abstract

The invention discloses a nanogold / silsesquioxane-containing polymer hybrid particle. Micelles self-assembled by amphiphilic macromolecules containing POSS (Polyhedral Oligomeric Silsesquioxane) are taken as carriers and nanogold is taken as a load, wherein the sizes of the carriers are 100-150nm, and the sizes of the nanogold is 5-10nm. The amphiphilic macromolecules containing the POSS are self-assembled into the micelles as the carriers, and the nanogold is effectively loaded to obtain a hybrid particle with the efficient catalytic activity, so that the defect that a traditional noble metal catalyst is bad in dispersibility is overcome, the using amount of noble metals is greatly reduced, the manufacturing cost is reduced, and the application prospect in the fields of air purification, biological catalysis and the like is wide.

Description

technical field [0001] The invention belongs to the technical field of composite materials, and in particular relates to a nano-gold / silsesquioxane-containing polymer hybrid particle and a preparation method thereof. Background technique [0002] Since the late 1980s, Haruta et al. found that Fe 2 o 3 and TiO 2 The gold nanoparticles deposited on the oxide support have very high low-temperature CO catalytic oxidation activity, and found its unique humidity enhancement effect, which broke the traditional concept that gold can not be used as a catalyst, and made people have a great deal of interest in the catalytic properties of gold. Great interest and attention. With people's further research, it is found that nano-gold catalysts have broad application prospects in the fields of chemical reaction catalysis and environmental purification. As we all know, the rise of new energy technologies has attracted the attention of noble metal catalysts that play the role of "factory...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J31/06C07C213/02C07C209/36C07C215/76C07C211/46
Inventor 曾碧榕吴悦广戴李宗陈凌南林康彬谢泓辉许一婷罗伟昂刘新瑜何凯斌
Owner XIAMEN UNIV