A kind of preparation method of egg yolk type Fenton microreactor loaded with precious metal nanoparticles on the inner surface

A micro-reactor and nano-particle technology, applied in chemical instruments and methods, chemical/physical/physical-chemical reactors, oxidized water/sewage treatment, etc. Low problems, to avoid aggregation, high stability, and improve the effect of decomposition rate

Active Publication Date: 2018-10-02
HARBIN INST OF TECH
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention is to solve existing heterogeneous Fenton's reagent H 2 o 2 Taking advantage of the problems of low efficiency, slow Fenton reaction rate and easy agglomeration of Fenton reagents, a method for preparing egg yolk-type Fenton microreactors with noble metal nanoparticles loaded on the inner surface is provided.

Method used

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  • A kind of preparation method of egg yolk type Fenton microreactor loaded with precious metal nanoparticles on the inner surface
  • A kind of preparation method of egg yolk type Fenton microreactor loaded with precious metal nanoparticles on the inner surface
  • A kind of preparation method of egg yolk type Fenton microreactor loaded with precious metal nanoparticles on the inner surface

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Experimental program
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specific Embodiment approach 1

[0029] Specific implementation mode one: the preparation method of the egg yolk type Fenton microreactor loaded with noble metal nanoparticles on the inner surface of the present implementation mode comprises the following steps:

[0030] 1. Disperse the magnetic nanoparticles into water, then add ethyl orthosilicate to a final concentration of 1mg / mL-30mg / mL, stir for 2-3min, then add ammonia water to a final concentration of 0.01mg / mL-1mg / mL, React for 6-12h to obtain product A;

[0031] 2. Add the product A into the noble metal salt solution, wherein the final concentration of the noble metal salt is 0.1mg / mL~10mg / mL, after stirring for 10min~30min, add the reducing agent until the final concentration is 1mg / mL~50mg / mL, and react for 10min ~60min, product B was obtained;

[0032] 3. Disperse the product B in the conductive polymer monomer, wherein the final concentration of the conductive polymer monomer is 10 mg / mL-100 mg / mL, and add an initiator until the final concentra...

specific Embodiment approach 2

[0034] Embodiment 2: This embodiment differs from Embodiment 1 in that the magnetic nanoparticles described in step 1 are ferric oxide, ferric oxide or iron oxyhydroxide. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0035] Embodiment 3: This embodiment differs from Embodiment 1 or Embodiment 2 in that: in step 1, tetraethyl orthosilicate is added to a final concentration of 5 mg / mL-25 mg / mL. Others are the same as in the first or second embodiment.

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Abstract

The invention relates to a preparation method of a Fenton microreactor, in particular to a preparation method of an egg yolk type Fenton microreactor having a noble metal nanoparticle-loaded inner surface, aiming at solving the problems that the existing heterogeneous Fenton reagents are low in H2O2 utilization efficiency, slow in Fenton reaction speed and easy in aggregation. The preparation method comprises the steps of 1, dispersing magnetic nanoparticles into water, then adding ethyl orthosilicate and ammonia water, and carrying out a reaction to obtain a product A; 2, adding the product A into a noble metal salt solution, stirring, adding a reducing agent, and carrying out a reaction to obtain a product B; 3, dispersing the product B into a conductive polymer monomer, adding an initiator for initiating polymerization, and carrying out a reaction to obtain a product C; 4, putting the product C into an etching agent for etching to obtain a final product. The microreactor prepared by the method can accelerate the heterogeneous Fenton reaction speed, is higher in H2O2 utilization efficiency and reduces the cost. The magnetic nanoparticles have higher stability and are not easily aggregated. The preparation method is used for preparing the Fenton microreactor.

Description

technical field [0001] The invention relates to a preparation method of a Fenton microreactor. Background technique [0002] In recent years, the form of global water pollution has become increasingly severe. Through the investigation of a large number of water pollution cases, it is found that a considerable part of them is caused by organic matter. Such pollutants widely exist in pesticides, chemical fertilizers and industrial wastewater, and have the characteristics of high toxicity, strong accumulation and large flow, which pose a serious threat to people's healthy life and the safety of industrial and agricultural production. How to effectively deal with such pollutants has become an important issue related to my country's sustainable development strategy. [0003] Because the concentration of such pollutants in water sources is generally very low, traditional sewage treatment methods such as sedimentation, filtration and biodegradation are difficult to effectively tr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J19/00C02F1/72
CPCB01J19/0093B01J2219/00822C02F1/722C02F1/725C02F2305/026
Inventor 姚同杰关晨晨张军帅
Owner HARBIN INST OF TECH
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