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A kind of copper-doped composite magnetic nanomaterial and its preparation and application

A magnetic composite nano-copper doping technology, which is applied in the fields of alkali metal compounds, other chemical processes, chemical instruments and methods, etc., can solve the problems of the stability of magnetic nano-composite materials to be evaluated, the destruction of magnetic particle structure, and the complexity of the preparation process. , to achieve the effects of increasing the specific surface area of ​​the product, enhancing the affinity, and simplifying the preparation process

Active Publication Date: 2016-08-24
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These methods all adopt two steps, that is, pre-synthesize magnetic nanoparticles, and then modify the particles. The preparation process of the two-step method is more complicated, the cost is high, and the post-modification is easy to damage the structure of the magnetic particles. The stability of the magnetic nanocomposites obtained sex to be assessed

Method used

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  • A kind of copper-doped composite magnetic nanomaterial and its preparation and application
  • A kind of copper-doped composite magnetic nanomaterial and its preparation and application
  • A kind of copper-doped composite magnetic nanomaterial and its preparation and application

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Experimental program
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Effect test

Embodiment 1

[0033] Embodiment 1: Synthetic magnetic Cu-Fe 3 o 4 .

[0034] 0.0085 g CuCl 2 2H 2 O with 1.35 g FeCl 3 ·6H 2 O Add 36 mL of ethylene glycol, ultrasonically disperse evenly (the initial molar ratio of copper ions to iron ions is 1:100), then add 3.6 g of NaAc, stir vigorously for 0.5 h, then put it into a hydrothermal reactor at 200°C for 8 h; Magnetic separation, washing with water and absolute ethanol three times each, and vacuum drying at 60 °C for 12 h to obtain mesoporous Cu-Fe 3 o 4 Microsphere a, and carry out SEM / TEM morphology characterization to the product, see figure 1 (A / E), the obtained product particle size is 440 nm, specific surface area is 49.44 m 2 g -1 , the total pore volume is 5.24cm 3 g -1 nm -1 , the zeta potential is 6.22 mV, and the magnetism is 106.4 emug -1 .

Embodiment 2

[0035] Embodiment 2: Synthetic magnetic Cu-Fe 3 o 4 .

[0036] 0.0425 g CuCl 2 2H 2 O with 1.35 g FeCl 3 ·6H 2 O was added with 36 mL of ethylene glycol, ultrasonically dispersed evenly (the initial molar ratio of copper ions to iron ions was 1:20), and then 3.6 g of NaAc was added, stirred vigorously for 0.5 h, and then placed in a hydrothermal reactor for 8 h at 200 °C; Separated, washed with water and ethanol three times each, and dried in vacuum at 60 °C for 12 h to obtain mesoporous Cu-Fe 3 o 4 microsphere b, and carry out SEM / TEM morphology characterization of the product, see figure 1 (B / F), the resulting product particle size: 560 nm, specific surface area: 49.44 m 2 g -1 , the total pore volume is 5.24cm 3 g -1 nm -1 , the zeta potential is 11.2 mV, and the magnetism is 102.56 emu g -1 .

Embodiment 3

[0037] Embodiment 3: Synthetic magnetic Cu-Fe 3 o 4 .

[0038] 0.170 g CuCl 2 2H 2 O with 1.35 g FeCl 3 ·6H 2 O was added to 36 mL of ethylene glycol (the initial molar ratio of copper ions to iron ions was 1:5), ultrasonically dispersed, and then 3.6 g of NaAc was added, stirred vigorously for 0.5 h, and then placed in a hydrothermal reactor for 8 h at 200 °C; Separated, washed with water and ethanol three times each, and dried in vacuum at 60 °C for 12 h to obtain mesoporous Cu-Fe 3 o 4 microsphere c, and carry out SEM / TEM morphology characterization of the product, see figure 1 (C / G), the obtained product particle size: 240 nm, specific surface area: 88.06 m 2 g -1 , the total pore volume is 11.24cm 3 g -1 nm -1 , with a magnetic zeta potential of 12.4 mV and a magnetic value of 87.45 emu g -1 .

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Abstract

The invention discloses a copper doped composite magnetic nano-material and preparation and an application of the copper doped composite magnetic nano-material, and belongs to the fields of magnetic particle synthesis and water treatment research. Aiming at a solvent thermal synthesis process of magnetic nanoparticles, according to the invention, copper chloride and ferric chloride are taken as metal salt precursors, based on solvent thermal reaction, and through copper doping ratio adjustment, the obtained mesoporous Cu-Fe3O4 microspheres have controllable particle size (560nm-120nm), specific surface area (40-100m2 g-1) and surface charge amount, and have the characteristics of high monodispersity, uniform size, high magnetic property (130-65emu g-1) and the like, and show excellent adsorption and regenerative adsorption properties for pentavalent arsenic and trivalent arsenic in a water body. The mesoporous Cu-Fe3O4 microspheres are simple in preparation process, low in cost and high in arsenic adsorption property, can be quickly magnetically separated, and has a good application prospect.

Description

technical field [0001] The invention belongs to the field of synthesis of magnetic composite nano-adsorption materials and water treatment thereof, and relates to Cu-Fe synthesized by one-step controllability 3 o 4 Mesoporous microspheres, a preparation method thereof, and an application method for arsenic adsorption in water bodies. Background technique [0002] Arsenic pollution has been an urgent environmental problem at home and abroad (Science 2008, 321(5886), 184-185). At present, arsenic removal mainly includes coagulation precipitation, adsorption, ion exchange, electrocoagulation, membrane separation and biological methods. Among them, the adsorption method has attracted extensive attention due to its advantages of simple operation, low cost, high biocompatibility, and easy regeneration (Journal of Hazardous Materials 2007, 142(1), 1-53; Industrial & Engineering Chemistry Research 2013, 52 (5), 2066-2072; Industrial & Engineering Chemistry Research 2011, 51(1), 3...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/06B01J20/28B01J20/30C02F1/28C02F1/58
CPCB01J20/06B01J20/28004B01J20/28009B01J20/28059B01J20/3085B01J2220/42B01J2220/4806C02F1/281C02F1/58C02F2101/103
Inventor 王海鹰柴立元王婷张理源唐崇俭杨志辉杨卫春
Owner CENT SOUTH UNIV
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