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Magnetic nano mixed semi micelle and preparation method thereof as well as application of magnetic nano mixed semi micelle in adsorbing and separating cationic dye from environmental water sample

A hybrid semimicelle, magnetic nanotechnology, applied in the fields of adsorption water/sewage treatment, material separation, water pollutants, etc. The effect of less, fast adsorption and low price

Inactive Publication Date: 2015-05-06
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the sample pretreatment methods for cationic dyes mainly include solid phase extraction, cloud point extraction, gel purification, etc., which generally have disadvantages such as cumbersome operation, large amount of organic solvent used, and small amount of sample processing.

Method used

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  • Magnetic nano mixed semi micelle and preparation method thereof as well as application of magnetic nano mixed semi micelle in adsorbing and separating cationic dye from environmental water sample
  • Magnetic nano mixed semi micelle and preparation method thereof as well as application of magnetic nano mixed semi micelle in adsorbing and separating cationic dye from environmental water sample
  • Magnetic nano mixed semi micelle and preparation method thereof as well as application of magnetic nano mixed semi micelle in adsorbing and separating cationic dye from environmental water sample

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Preparation of magnetic nano-mixed semi-micelles of the present invention

[0037] 1) Fe 3 o 4 Magnetic nanoparticles (hereinafter referred to as Fe 3 o 4 MNPs) preparation: take 2.5g solid FeCl 2 4H 2 O, 5.0 g solid FeCl 3 ·6H 2O, put it in a small beaker, add 0.9ml of concentrated hydrochloric acid and 25ml of deionized water to dissolve it completely, then transfer it to a separatory funnel; weigh 15g of solid NaOH, dissolve it in 250ml of deionized water, and transfer it to the three-hole flask, and place the three-necked flask in a 60°C water bath; under sufficient mechanical stirring, add the mixture in the separatory funnel dropwise to the three-necked flask; then, stir for 3 hours under nitrogen protection; the reaction ends Finally, a magnet was placed at the bottom of the flask, and the freshly prepared Fe 3 o 4 The magnetic nanoparticles were absorbed, the solution was poured out, washed with deionized water and ethanol until neutral, and dried in va...

Embodiment 2

[0040] Step 1) is consistent with step 1) in Example 1;

[0041] 2) Weigh the Fe prepared in step 1) 3 o 4 MNPs are ultrasonically dispersed in ionized water, the dispersion concentration is 50mg / ml, adding anionic surfactant sodium dodecylsulfonate (SDS), SDS and Fe 3 o 4 The MNPs feed ratio (w / w) was 1:1, the pH was adjusted with hydrochloric acid, vortexed and ultrasonicated to form magnetic nano-mixed semi-micelles.

Embodiment 3

[0043] Characterization of Magnetic Nanomixed Hemimicelles

[0044] 1. Fe 3 o 4 Characterization of MNPs

[0045] For the magnetic nanoparticles prepared by the method of chemical co-precipitation, use D8 ADVANCE type XRD tester (Germany Bruker company), ZEISS SIGMA HD scanning electron microscope (Germany Zeiss company), NanoZS90 type Zeta potential measuring instrument (UK Malvern company) respectively. X-ray powder diffraction (XRD) and scanning electron microscope (SEM) analyzes were carried out, and its Zeta potential at different pH values ​​was determined.

[0046] image 3 Shows Fe 3 o 4 The SEM morphology of MNPs shows that the prepared nanoparticles are approximately spherical, relatively uniform in size, and have a diameter of less than 50nm, which has typical nanometer characteristics.

[0047] The XRD spectrum test results are as follows Figure 4 Shown: Six diffraction peaks of 2θ=30.2°, 35.6°, 43.3°, 53.6°, 57.3° and 62.9° appeared in the diffraction patt...

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Abstract

The invention provides a magnetic nano mixed semi micelle and a preparation method thereof as well as an application of the magnetic nano mixed semi micelle in adsorbing and separating a cationic dye from an environmental water sample. The magnetic nano mixed semi micelle consists of a carrier and a surface micelle layer, wherein the carrier is magnetic nano particles, the surface of the carrier is a mixed semi micelle formed by an anionic surface active agent; the magnetic nano particles are Fe3O4 or gamma-Fe2O3; and the anionic surface active agent is sodium dodecyl sulfate, sodium dodecylbenzene sulfonate or sodium n-alkyl benzene sulfonate. The magnetic nano mixed semi micelle prepared by the method provided by the invention not only has the advantages of large specific area and high adsorption capacity of a nano material, but also has good magnetic separating power of a magnetic material; when the magnetic nano mixed semi micelle is applied to solid phase extraction, the adsorption time can be greatly shortened; and the preparation method of the adsorbent is simple, low in cost and very suitable for large-scale batch processing of the environmental water sample.

Description

technical field [0001] The invention belongs to the field of chemical analysis testing instruments and equipment, and in particular relates to a magnetic nano-mixed semi-micelle, a preparation method thereof and the application of cationic dyes in adsorption and separation of environmental water samples. Background technique [0002] Basic Nen Yellow O, Basic Orange 21, Basic Orange 22, and Rhodamine B are commonly used cationic synthetic dyes, mainly used for dyeing in textile, leather, printing and wood products industries, and are the main pollution in printing and dyeing wastewater one of the things. In addition, rhodamine B is also a commonly used scientific research reagent in chemical and biological laboratories, and is widely used in the determination of antimony, bismuth, cobalt, mercury, and other heavy metals, as a tracer in river water and seawater, and in fluorescent staining of cells. However, these dyes not only irritate the skin, eyes and respiratory tract, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/28B01J20/30C02F1/28G01N30/02
CPCB01J20/06B01J20/28009C02F1/281C02F2101/308G01N30/02
Inventor 张学武戚平易云婷刘冬豪梁智安肖剑周庆琼
Owner SOUTH CHINA UNIV OF TECH
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