Nano heterogeneous Fenton catalyst with alginate core coated with copper/magnetic Fe3O4 and preparation method of Nano heterogeneous Fenton catalyst

An alginate and outer coating technology is applied in the field of heterogeneous Fenton catalyst and its preparation, which can solve the problems of loss, difficult separation of catalyst ions, etc., and achieves increased oxidation capacity, reduced Fenton mud, and good biological phase. Capacitive and Environmentally Friendly Effects

Active Publication Date: 2016-06-15
HARBIN INST OF TECH
View PDF2 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The present invention is to solve the technical problems of strict pH requirement of the existing homogeneous Fenton catalyst, difficult separation and

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Nano heterogeneous Fenton catalyst with alginate core coated with copper/magnetic Fe3O4 and preparation method of Nano heterogeneous Fenton catalyst
  • Nano heterogeneous Fenton catalyst with alginate core coated with copper/magnetic Fe3O4 and preparation method of Nano heterogeneous Fenton catalyst
  • Nano heterogeneous Fenton catalyst with alginate core coated with copper/magnetic Fe3O4 and preparation method of Nano heterogeneous Fenton catalyst

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0021] Specific embodiment one: the alginate core of this embodiment is coated with copper / magnetic Fe 3 O 4 The nano heterogeneous Fenton catalyst is based on sodium alginate as the core and the core is coated with Fe 3 O 4 Magnetic nanoparticles and spherical particles of copper chloride, the particle size is 1 ~ 1.5 mm, Fe 3 O 4 The particle size of the magnetic nanoparticles is 15 to 35 nanometers.

Example Embodiment

[0022] Specific embodiment two: the alginate core described in specific embodiment one is coated with copper / magnetic Fe 3 O 4 The preparation method of the nano heterogeneous Fenton catalyst is carried out according to the following steps:

[0023] 1. Mix the divalent iron salt and the trivalent iron salt according to the molar ratio of 1:(2~3), then heat up to 30~70℃, add the alkali solution with the concentration of 1~5mol / L under stirring conditions as Precipitant, after stirring and reacting for 1~1.5h, static precipitation, remove the supernatant, wash the precipitate with ultrapure water until the pH is neutral, and then disperse ultrasonically for 5~10min, transfer to a sample bottle for storage, and obtain Magnetic Nano Fe 3 O 4 Dispersions;

[0024] 2. Add the sodium alginate solution to the magnetic nano Fe prepared in step one 3 O 4 In the dispersion liquid and mix evenly to prepare a suspension slurry;

[0025] 3. The suspension slurry obtained in step 2 is added dropwi...

Example Embodiment

[0026] Embodiment 3: This embodiment is different from Embodiment 2 in that the divalent iron salt and the trivalent iron salt are sulfates, chlorides or phosphates. Others are the same as the second embodiment.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
Particle sizeaaaaaaaaaa
Particle sizeaaaaaaaaaa
Diameteraaaaaaaaaa
Login to view more

Abstract

The invention relates to a nano heterogeneous Fenton catalyst with an alginate core coated with copper/magnetic Fe3O4 and a preparation method of the Nano heterogeneous Fenton catalyst. The invention relates to a heterogeneous Fenton catalyst and a preparation method thereof, which aims at solving the technical problems of the existing homogenous Fenton catalyst that the requirement on pH is high, and the catalyst ions are difficult to separate and likely to lose. The catalyst is formed by adopting sodium alginate as a core and coating the core with Fe3O4 nano particles and spherical particles of copper chloride. The preparation method comprises the following steps: I, adding a precipitant into a ferrous salt and ferric salt solution, washing precipitates, and then dispersing the precipitates to obtain a magnetic nano Fe3O4 dispersed solution; II, adding a sodium alginate solution into the dispersed solution, and uniformly mixing to prepare suspension slurry; and III, dropwise adding the suspension slurry into a copper chloride solution, carrying out the stationary reaction, separating, and drying to obtain the nano heterogeneous Fenton catalyst with the alginate core coated with the copper/magnetic Fe3O4. The nano heterogeneous Fenton catalyst can be applied to the water treatment.

Description

technical field [0001] The invention relates to a heterogeneous Fenton catalyst and a preparation method thereof. Background technique [0002] Fenton technology is a kind of advanced oxidation technology, mainly composed of Fe 2+ and H 2 o 2 Fenton's reagent reacts under acidic conditions (reaction (1)) to generate free radicals with strong oxidizing effects, such as OH and so on. (·OH oxidation potential 2.8V, second only to fluorine oxidation potential 2.87V). These strong oxidizing free radicals can non-selectively oxidize organic matter, so as to achieve the purpose of efficient removal of organic matter. Cu exhibits similar redox properties to Fe, and Cu + and Cu 2+ Both valence states are easily compatible with H 2 o 2 react to produce HO and HO respectively 2 ·(Reactions (2) and (3)), the biggest difference between Cu and Fe is that Fe 3+ Hydrate [Fe(H 2 O)6] 3+ Insoluble in water at pH>5, while Cu 2+ Hydrate [Cu(H 2 O) 6 ] 2+ Predominates at neutr...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): B01J31/28B01J23/745C02F1/28C02F1/72C02F101/34C02F101/38
CPCC02F1/286C02F1/722C02F1/725C02F2101/308C02F2305/026
Inventor 邱珊邓凤霞杨基先徐善文杨乐
Owner HARBIN INST OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap