Method for loading appearance-controllable bi-metal nano-composite material between two-dimensional laminar material and conductive polymer double carrier

A conductive polymer, bimetallic nanotechnology, applied in chemical instruments and methods, organic compound/hydride/coordination complex catalysts, physical/chemical process catalysts, etc., can solve the difficulty of catalyst morphology control and the stability of catalytic materials problems such as poor performance, low recycling efficiency, etc., to achieve the effect of facilitating the orientation of highly active morphology, controllable morphology, and saving economic costs

Inactive Publication Date: 2015-11-18
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problems of complex experimental steps, poor stability of catalytic materials, short service life, and difficulty in controlling catalyst morphology in the process of synthesizing metal catalysts, the present invention provides a simple method between a two-dimensional sheet material and a conductive polymer dual carrier. Method for loading bimetallic nanomaterials with controllable morphology
This method not only has simple synthesis steps, but also has high catalyst stability, is convenient for separation and reuse, greatly improves the service life of the catalyst, and solves the problems of easy aggregation, short service life and low recycling efficiency of metal nanocatalysts in practical applications.

Method used

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  • Method for loading appearance-controllable bi-metal nano-composite material between two-dimensional laminar material and conductive polymer double carrier
  • Method for loading appearance-controllable bi-metal nano-composite material between two-dimensional laminar material and conductive polymer double carrier
  • Method for loading appearance-controllable bi-metal nano-composite material between two-dimensional laminar material and conductive polymer double carrier

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Experimental program
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Effect test

Embodiment 1

[0028] During the preparation process, 5.0 mL of a solution containing chloroauric acid and chloroplatinic acid in a ratio of 1:1 according to the amount of substances was added to 20 mL of graphene oxide solution with a concentration of 1.5 mg / mL, and a uniform mixture was formed after stirring for 10 min. solution. Next, add 0.2mL aniline monomer into the system, and react for 5.0h under the condition of stirring. After the reaction, the product was centrifuged at 7000r / min for 10min, and washed three times with deionized water to remove unreacted aniline monomers in the system.

[0029] The TEM photo of the two-dimensional graphene oxide nanomaterial obtained in the present embodiment is as follows figure 1 shown. Depend on figure 2 It can be seen that the gold-platinum alloy nanomaterial obtained in this example is dendritic. Depend on Figure 4 It can be seen that without using a catalyst, methylene blue will not fade even after 4 hours of reaction; and after adding...

Embodiment 2

[0031] During the preparation process, add 1.0 mL of a solution containing chloroauric acid and chloroplatinic acid with a ratio of 2:1 according to the amount of substances to 20 mL of graphene oxide solution with a concentration of 1.5 mg / mL, stir for 10 min, and form a uniform solution. Next, add 0.05 mL of pyrrole monomer into the system, and react for 3.0 h under the condition of stirring. After the reaction, the product was centrifuged at 7000r / min for 10min, and washed 3 times with deionized water to remove unreacted pyrrole monomers in the system.

[0032] Depend on image 3 It can be seen that the gold-platinum alloy nanomaterials obtained in this example are in the form of porous clusters.

Embodiment 3

[0034] In the process of preparation, add 4.0mL to the graphene oxide solution that 20mL concentration is 1.5mg / mL and contain the solution of chloroauric acid, gold nitrate and chloroplatinic acid that are 2:1:1 according to the amount ratio of substance, Stir for 10 min to form a homogeneous solution. Next, add 0.1 mL of thiophene monomer into the system, and react for 4.0 h under stirring conditions. After the reaction, the product was centrifuged at 7000r / min for 10min, and washed 3 times with deionized water to remove unreacted thiophene monomers in the system.

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Abstract

The invention discloses a method for loading an appearance-controllable bi-metal nano-composite material between a two-dimensional laminar material and a conductive polymer double carrier. The method comprises the following steps: step I, adding a bi-metal salt-containing solution into a two-dimensional laminar material-containing solution, so as to form a uniform solution; step II, adding conductive polymer monomer into the solution obtained in the step I; step III, removing unreacted monomer from the solution obtained in the step II, and washing with deionized water, so as to obtain the bi-metal nano-composite material. The method has the advantages that not only are the synthesis steps simple, but also the catalyst stability is high, separation for recycling is convenient, the service life of a catalyst is greatly prolonged, and the problems of high aggregation rate, short service life and low cyclic utilization efficiency of the conventional metal nano-catalyst in practical application are solved. More importantly, due to simple experiment parameter regulation, the appearance of the bi-metal nano-composite material can be controlled effectively, and the catalytic activity of the catalyst is further improved. Therefore, the purpose of using the catalyst efficiently is realized.

Description

technical field [0001] The invention belongs to the field of nanomaterial catalyst synthesis and application, and relates to a preparation method for synthesizing a catalyst with controllable morphology and high catalytic activity, in particular to a two-dimensional sheet material and a conductive high molecular polymer as a carrier, in two A method for synthesizing bimetallic nanomaterials with controllable morphology between two kinds of supports. Background technique [0002] Due to their unique optical, electrical and magnetic properties, especially the catalytic performance far superior to the corresponding monometallic nanomaterials, bimetallic nanomaterials have attracted the attention of more and more researchers. These properties make them widely used in fields such as energy conversion, sensor, biomedicine and catalyst (W.P.To, K.T.Chan, G.S.M.Tong, C.S.Ma, W.M.Kwok, X.G.Guan, K.H.LowandC.M.Che, Angew.Chem.Int. Ed., 2013, 52, 6648-6652; S. Roy, G. Palui and A. Ban...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/28
Inventor 姚同杰左权
Owner HARBIN INST OF TECH
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