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Synthesis and application of high performance and high strength composite gel with loaded gold nano particles

A gold nanoparticle, composite gel technology, applied in the field of composite gel, can solve the problems of brittle, unbearable, catalytic performance discount, etc.

Inactive Publication Date: 2018-08-17
NORTHWEST NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, common hydrogels have poor mechanical properties, are easily broken and brittle during application, and cannot withstand strong external stress, which greatly reduces their catalytic performance and greatly reduces the industrial application of metal nanoparticle-loaded gels. Utilization of

Method used

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  • Synthesis and application of high performance and high strength composite gel with loaded gold nano particles
  • Synthesis and application of high performance and high strength composite gel with loaded gold nano particles
  • Synthesis and application of high performance and high strength composite gel with loaded gold nano particles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] (1) Preparation of zwitterionic liquid polymer 1-vinyl-3-propylimidazole sulfonate (P(PVIS))

[0036] a. Dissolve 4.7g (50mmol) of N-vinylimidazole in 20ml of dichloromethane solution, and then add the mixture dropwise to 1,3-propane sultone (6.71g, 55mmol) in dichloromethane solution (20ml). Stir vigorously at a constant temperature of 45° C. for 4 h to obtain a white solid. After repeated washing with ether, unreacted monomers and impurities were removed to obtain the final product;

[0037] b. Take 0.15g of the zwitterionic liquid synthesized in the previous step and 0.01g of sodium chloride, dissolve them in 0.78mL of water, add 5mg of initiator potassium persulfate, pass through nitrogen protection, and react at a constant temperature of 65°C for 4h to obtain light yellow translucent viscous polymer. Add acetone, wash and settle for many times, and obtain a white opaque solid polymer, which is zwitterionic liquid polymer 1-vinyl-3-propylimidazole sulfonate (P(PV...

Embodiment 2

[0044] (1) Preparation of zwitterionic liquid polymer 1-vinyl-3-propylimidazole sulfonate (P(PVIS)): same as Example 1;

[0045] (2) Synthesis of gel P(PVIS) / P(NaSS-MPTC): same as Example 1;

[0046] (3) Synthesis of composite gel P(PVIS) / P(NaSS-MPTC) / Au: soak the hydrogel P(PVIS) / P(NaSS-MPTC) in a 1.0M sodium chloride solution to Swell balance, and then soaked in the concentration of 0.5mg / ml chloroauric acid solution for 72h, then the gel was added to the concentration of 2M sodium borohydride, the AuCl 4 - After being reduced to gold nanoparticles, the hybrid gel P(PVIS) / P(NaSS-MPTC) / Au-1.0 is obtained.

[0047] P(PVIS) / P(NaSS-MPTC) / Au-1.0 for NaBH 4 The reaction of reducing 4-nitrophenol can make NaBH 4 Reduction of 4-nitrophenol was completed within 35 minutes.

Embodiment 3

[0049] (1) Preparation of zwitterionic liquid polymer 1-vinyl-3-propylimidazole sulfonate (P(PVIS)): same as Example 1;

[0050] (2) Synthesis of gel P(PVIS) / P(NaSS-MPTC): same as Example 1;

[0051] (3) Synthesis of composite gel P(PVIS) / P(NaSS-MPTC) / Au: soak the hydrogel P(PVIS) / P(NaSS-MPTC) in a 2.0M sodium chloride solution to Swell equilibrium, and then soaked in the concentration of 0.5mg / ml chlorauric acid solution for 72h, then the gel was added to the concentration of 2M sodium borohydride, the AuCl 4 - After being reduced to gold nanoparticles, the hybrid gel P(PVIS) / P(NaSS-MPTC) / Au-2.0 is obtained.

[0052] Composite gel P(PVIS) / P(NaSS-MPTC) / Au-2.0 for NaBH 4 The reaction of reducing 4-nitrophenol can make NaBH 4 Reduction of 4-nitrophenol was completed within 20 minutes.

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Abstract

The invention discloses a high performance and high strength hydrogel based on gold nano particles. A cationic liquid namely 3-(methacryloylamino) propyl trimethyl ammonium chloride and an anionic liquid namely sodium p-styrene sulfonate are taken as the copolymerization monomers; alpha-keto-glutaric acid is taken as a photoinitiator; in a NaCl solution, polymerization is triggered by UV rays, andthen the reaction product is crosslinked with an amphoteric particle polymer namely 1-vinyl-3-propyl imidazole sulfonate through ion bonds to synthesize the hydrogel with high mechanical strength. The hydrogel adsorbs AuCl4 through ion bonds; and finally, through reduction of sodium borohydride, gold nano particles are fixed in the gel to form P(PVIS) / P(NaSS-MPTC) / Au composite gel. The compositegel has a high catalytic activity on 4-nitrophenol reduction reactions under the action of a NaBH4 solution, and the reactions finish within 20 minutes.

Description

technical field [0001] The invention relates to a composite gel loaded with metal nanoparticles, in particular to the synthesis of a high-performance and high-strength composite gel loaded with gold nanoparticles, which is mainly used to catalyze NaBH 4 Solution reduction reaction of 4-nitrophenol. Background technique [0002] 4-Nitrophenol is known to be toxic and has the potential to form a large number of harmful deposits in the environment, and it is a major source of pollution in industrial wastewater. with NaBH 4 Solution reduction of 4-nitrophenol is a typical reaction, and how to make this reaction efficient and fast is a key research topic in the field of environmental chemistry. And choosing a suitable catalyst is one of the main ways to solve the above problems. [0003] Metal nanoparticles have unique quantum size effect, volume effect, surface interface effect and macroscopic quantum tunnel effect, and have been widely used in the research of catalysts, biom...

Claims

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Application Information

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IPC IPC(8): B01J31/06B01J37/16B01J32/00B01J23/52B01J13/00C07C213/02C07C215/76
CPCB01J13/0065B01J23/52B01J31/063B01J37/16C07C213/02C07C215/76
Inventor 何晓燕张云雷张彩芸刘利琴韩慧敏
Owner NORTHWEST NORMAL UNIVERSITY
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