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Nano precious metal load polymer vesica and preparing method thereof

A precious metal and polymer technology, applied in chemical instruments and methods, organic compound/hydride/coordination complex catalysts, chemical/physical processes, etc., can solve the problems of complex synthesis process and low yield of polymer vesicles, etc. To achieve the effect of simple and easy preparation method, dense distribution and uniform particle size

Active Publication Date: 2015-10-28
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the synthesis process of polymersomes reported in the literature is complicated and the yield is low. Therefore, it is very important to develop a universal method that is simple, does not require the preparation of templates in advance, and can prepare a large number of polymersomes in one step in both scientific research and production. significance

Method used

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  • Nano precious metal load polymer vesica and preparing method thereof
  • Nano precious metal load polymer vesica and preparing method thereof
  • Nano precious metal load polymer vesica and preparing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] 1) Preparation of phenolic resin prepolymer (Resol)

[0031] Weigh 25g of phenol, weigh 42g of formaldehyde solution according to the molar ratio of phenol:formaldehyde=1:2, and divide it into two parts of 33g and 9g for use. Weigh 1.25g of sodium hydroxide solid according to 5% of the mass of phenol, add 5g of deionized water to prepare a 20% NaOH aqueous solution, and divide it into two portions of 5g and 1.25g for use.

[0032] Add 25g of phenol and 5g of NaOH aqueous solution into a three-neck flask equipped with a mechanical stirrer, stir and mix evenly, place in a constant temperature water bath at 45°C for 20min; add 33g of formaldehyde solution and raise the temperature to 60°C for constant temperature reaction for 60min; add the remaining 1.25g of NaOH Aqueous solution, continue to react at a constant temperature of 60°C for 30 minutes; add the remaining 9g of formaldehyde solution and raise the temperature to 70°C, and react at a constant temperature for 30 mi...

Embodiment 2

[0042] Step 1) With reference to Embodiment 1, details are not repeated.

[0043] 2) Preparation of polymersomes

[0044] Measure 0.5mL of styrene (St) and 0.05mL of tetravinylpyridine (4VP) in a sample bottle containing 5mL of ethylene glycol, absorb the phenolic resin prepolymer with a disposable syringe, and weigh 0.1g drop by differential method Into the sample bottle, ultrasonic treatment for 30min to mix well.

[0045] Weigh 0.03g nonionic surfactant (at least one of polyethylene oxide, polyethylene glycol, polyoxyethylene-polyoxypropylene-polyoxyethylene triblock copolymer, polyvinylpyrrolidone) and dissolve in Add 2mL deionized water into the St-Resol ethanol solution that is mixed well, and ultrasonically treat for 30min to mix well

[0046] Add the prepared mixed solution of St-4VP-Resol and surfactant ethylene glycol / water into a stainless steel reaction kettle with a polytetrafluoroethylene lining, and tighten the seal, and place the reaction kettle in a blast ov...

Embodiment 3

[0051] Step 1) With reference to Embodiment 1, details are not repeated.

[0052] 2) Preparation of polymersomes

[0053] Measure 0.5mL of styrene (St) and 0.05mL of tetravinylpyridine (4VP) in a sample bottle containing 5mL of isopropanol, use a disposable syringe to absorb the phenolic resin prepolymer, and weigh 0.1g drop by differential method Into the sample bottle, ultrasonic treatment for 30min to mix well.

[0054] Weigh 0.03g nonionic surfactant (at least one of polyethylene oxide, polyethylene glycol, polyoxyethylene-polyoxypropylene-polyoxyethylene triblock copolymer, polyvinylpyrrolidone) and dissolve in Add 7mL deionized water into the St-Resol ethanol solution that is mixed well, and ultrasonically treat for 30min to mix well

[0055] Add the prepared mixed solution of St-4VP-Resol and surfactant ethylene glycol / water into a stainless steel reaction kettle with a polytetrafluoroethylene lining, and tighten the seal, and place the reaction kettle in a blast oven...

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Abstract

The invention discloses a nano precious metal load polymer vesica and a preparing method thereof. The method includes the steps that firstly, phenolic resin prepolymer is prepared to serve as a reaction precursor, a P4VP-PF-PSt composite vesica is further prepared through a hydrothermal method in combination with functional monomer styrene and 4-vinylpyridine, then the surface of the vesica is evenly loaded with precious metal nano particles by adding a salt solution and a reduction agent of the precious metal, and a nano hybrid material is obtained. The preparing method is simple, environmentally friendly, suitable for industrialized production and capable of being used for preparing vesicae of different particle sizes and different thin film thicknesses by adjusting the reaction temperature, the reaction time, solvents and surfactant.

Description

technical field [0001] The invention belongs to the technical field of nano-functional materials, and relates to a nano-noble metal-loaded polymer vesicle and a preparation method thereof, in particular to a nano-noble metal-loaded polytetravinylpyridine-polystyrene-phenolic resin composite vesicle and a preparation method thereof. Background technique [0002] In recent years, nano-noble metals have become a major research hotspot in the field of materials, because the d-electron orbitals of noble metals are not filled, the surface is easy to adsorb reactants, and has high catalytic activity. At the same time, nano-precious metals also have comprehensive excellent properties such as high temperature resistance, oxidation resistance, and corrosion resistance, and are widely used in chemical, petroleum refining, and pharmaceutical fields. However, the nano-precious metal itself cannot exist stably, and it is easy to agglomerate into blocks, which affects its chemical properti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/06B01J35/02B01J35/00
Inventor 戴李宗余世荣袁丛辉罗伟昂李聪毛杰许一婷曾碧榕何凯斌
Owner XIAMEN UNIV
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