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Method of preparing iron phthalocyanine (FePc) water-soluble dispersed nanoparticles

A nanoparticle, water-soluble technology, applied in nanotechnology, nanotechnology, chemical instruments and methods, etc., can solve problems such as poor dispersion, intermolecular agglomeration, and reduced catalytic activity, and achieve improved effects, simple preparation methods, and improved agglomeration. effect of the problem

Inactive Publication Date: 2018-12-07
SHANDONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, affected by factors such as its group and molecular configuration, the existing iron phthalocyanine materials have poor dispersion and serious intermolecular agglomeration problems, resulting in a significant reduction in their catalytic activity in the process of catalyzing the oxygen reduction reaction. Therefore, Preventing the polymerization of iron phthalocyanine molecules and improving the dispersibility of iron phthalocyanine particles are important problems to be solved urgently to improve the electrocatalytic oxygen reduction activity of iron phthalocyanine materials.

Method used

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  • Method of preparing iron phthalocyanine (FePc) water-soluble dispersed nanoparticles
  • Method of preparing iron phthalocyanine (FePc) water-soluble dispersed nanoparticles
  • Method of preparing iron phthalocyanine (FePc) water-soluble dispersed nanoparticles

Examples

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Effect test

Embodiment 1

[0067] The concentration of 0.5% sodium dodecyl sulfate was modified to prepare water-soluble dispersed particles of iron phthalocyanine.

[0068] Weigh 7.2mg of iron phthalocyanine into a beaker, add 48ml of ethanol solution, and ultrasonically disperse iron phthalocyanine in the ethanol solution for 30min to prepare 0.15mg / ml iron phthalocyanine solution; weigh 60mg of Sodium lauryl sulfate is dispersed in 12ml deionized water to prepare a 0.5% aqueous solution, and 4 parts of the prepared iron phthalocyanine solution and 1 part of sodium lauryl sulfate dispersant aqueous solution are evenly mixed, and stirred in a constant temperature magnetic heating stirrer (setting stirring temperature is 25 ℃, stirring speed is 500rmp, and stirring time is 132h), until the solvent ethanol in the dispersion liquid evaporates completely, and utilizes the low-speed centrifuge to centrifuge the dispersion liquid that the solvent volatilizes completely (setting centrifugal speed is 5000rmp, ...

Embodiment 2

[0070] The concentration of 0.75% sodium dodecyl sulfate was modified to prepare water-soluble dispersed particles of iron phthalocyanine.

[0071] Weigh 7.2 mg of iron phthalocyanine into a beaker, add 48 ml of ethanol solution, and ultrasonically disperse iron phthalocyanine in the ethanol solution for 30 minutes to prepare a 0.15 mg / ml iron phthalocyanine solution; weigh 90 mg of Sodium lauryl sulfate is dispersed in 12ml of deionized water to prepare a 0.75% aqueous solution, and 4 parts of the prepared iron phthalocyanine solution and 1 part of sodium lauryl sulfate dispersant aqueous solution are evenly mixed, and stirred in a constant temperature magnetic heating stirrer (setting stirring temperature is 25 ℃, stirring speed is 500rmp, and stirring time is 60h), until the solvent ethanol in the dispersion liquid evaporates completely, and utilizes the low-speed centrifuge to centrifuge the dispersion liquid that solvent volatilization is complete (setting centrifugal spee...

Embodiment 3

[0073] The concentration of 1% sodium dodecyl sulfate was modified to prepare water-soluble dispersed particles of iron phthalocyanine.

[0074] Weigh 7.2 mg of iron phthalocyanine into a beaker, add 48 ml of ethanol solution, and ultrasonically disperse iron phthalocyanine in the ethanol solution for 30 minutes to prepare a 0.15 mg / ml iron phthalocyanine solution; weigh 120 mg of Sodium lauryl sulfate is dispersed in 12ml deionized water to prepare a 1% aqueous solution, and 4 parts of the prepared iron phthalocyanine solution and 1 part of sodium lauryl sulfate dispersant aqueous solution are evenly mixed, and stirred in a constant temperature magnetic heating stirrer (setting stirring temperature is 25 ℃, stirring speed is 500rmp, and stirring time is 72h), until the solvent ethanol in the dispersion liquid evaporates completely, and utilizes the low-speed centrifuge to centrifuge the dispersion liquid that solvent volatilization is complete (setting centrifugal speed is 500...

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Abstract

The invention provides a method of preparing FePc water-soluble dispersed nanoparticles, comprising steps of: S1) preparation of FePc dispersion liquid: dispersing FePc in a solvent to prepare the FePc dispersion liquid, concentration being 0.1-1 mg / ml; S2) preparation of a dispersant water solution: stirring and dissolving a dispersant in water to prepare the dispersant water solution, concentration being 0.5-3%; S3) mixing and heating: mixing and heating the FePc dispersion liquid and the dispersant water solution, and purifying the mixture to prepare the FePc water-soluble dispersed nanoparticles. The method has simple operations and stable processes, can increase the dispersion stability of the FePc and effectively solve the problem of aggregation of the FePc. By increasing active sites during a catalytic oxygen reduction reaction, contact possibility between attachment points of the FePc and oxygen is increased, so that the effect of the catalytic oxygen reduction reaction is improved. The product has great industrial production and practical application value.

Description

technical field [0001] The invention belongs to the technical field of preparation of electrochemical catalysts, and in particular relates to a method for preparing water-soluble dispersed nanoparticles of iron phthalocyanine by modifying a dispersant. Background technique [0002] Iron phthalocyanine material is an electrochemical catalytic material, which is often used to catalyze oxygen reduction reaction, and is the material with the best catalytic oxygen reduction activity among all phthalocyanine materials. Compared with the traditional Pt catalyst, it has the advantages of synthesizable, low cost, and no poisoning effect. [0003] However, affected by factors such as its group and molecular configuration, the existing iron phthalocyanine materials have poor dispersion and serious intermolecular agglomeration problems, resulting in a significant reduction in their catalytic activity in the process of catalyzing the oxygen reduction reaction. Therefore, Preventing the ...

Claims

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Application Information

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IPC IPC(8): B01J31/22B01J35/00B01J37/00B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00B01J31/183B01J37/0009B01J2531/842B01J35/23B01J35/33
Inventor 钱磊丁宇尹锐赵雯李晓敏
Owner SHANDONG UNIV
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