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Preparation method and application of nano motor adsorbing material

An adsorption material and motor technology, applied in chemical instruments and methods, adsorbed water/sewage treatment, inorganic chemistry, etc., can solve the problems of low selectivity, secondary pollution, and poor recyclability of nanomaterials, and achieve a simple preparation process, removal of The effect of good effect and low cost of synthesis

Active Publication Date: 2021-03-02
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Most of these methods are based on the modification of materials. The modified adsorption materials generally increase their specific surface area and increase a variety of active sites, but at the same time, there are also low selectivity and poor recyclability of nanomaterials. Disadvantages of secondary pollution

Method used

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  • Preparation method and application of nano motor adsorbing material
  • Preparation method and application of nano motor adsorbing material
  • Preparation method and application of nano motor adsorbing material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Embodiment 1: The preparation method of this nanomotor adsorption material is as follows:

[0033] (1) Weigh FeCl 2 2g and FeCl 3 Put 5.4g in a 100mL beaker, add 25mL of 2mol / L hydrochloric acid, fully dissolve and transfer to a 250mL three-necked flask, pass nitrogen into the solution to remove dissolved oxygen in the solution; then stir for 10min under the protection of nitrogen, the stirring speed is 300r / min, add ammonia water (28%, 40mL) while stirring; continue to stir for 1h after adding liquid, collect the solid and wash it with 60mL deionized water to obtain Fe 3 o 4 Nanoparticles;

[0034] (2) Fe 3 o 4 After ultrasonic treatment of nanoparticles in 0.1mol / L nitric acid solution for 10min, rinse with deionized water for 3 times, then disperse the rinsed particles in 0.5mol / L glucose aqueous solution, stir vigorously (450r / min) for 10min , transfer the suspension to an autoclave at 180°C for 6 hours, cool and separate it with a magnet, wash the solid wit...

Embodiment 2

[0038] Embodiment 2: The preparation method of this nanomotor adsorption material is as follows:

[0039] (1) Fe 3 o 4 Nanoparticles were ultrasonically treated in 1mol / L nitric acid solution for 20min, rinsed with deionized water for 4 times, then dispersed in 0.4mol / L glucose aqueous solution, stirred vigorously (450r / min) for 25min, Transfer the suspension to an autoclave at 200°C for 4 hours, cool and separate it with a magnet, wash the solid with deionized water and alcohol alternately for 4 times, and dry it in a vacuum oven at 80°C for 4 hours to obtain Fe 3 o 4 @C microsphere;

[0040] (2) Fe 3 o 4 @C microspheres dispersed in n-butyl titanate-ethanol mixed solution (n-butyl titanate and Fe 3 o 4 @C The mass ratio of microspheres is 5:0.8, the mass volume ratio of n-butyl titanate and ethanol is 1:7), after ultrasonic mixing, the nickel nitrate-ethanol mixture (cobalt nitrate and Fe 3 o 4 The mass ratio of @C microspheres is 4:1, the mass volume ratio of cobal...

Embodiment 3

[0042] Embodiment 3: The preparation method of this nanomotor adsorption material is as follows:

[0043] (1) Fe 3 o 4 Nanoparticles were ultrasonically treated in 0.2mol / L nitric acid solution for 9 minutes, rinsed with deionized water for 4 times, and then dispersed in 0.6mol / L glucose aqueous solution, stirred vigorously (450r / min) for 18min , transfer the suspension to an autoclave at 210°C for 3 hours, cool it and separate it with a magnet, wash the solid with deionized water and alcohol alternately for 4 times, and dry it in a vacuum oven at 80°C for 4 hours to obtain Fe 3 o 4 @C microsphere;

[0044] (2) Fe 3 o 4 @C microspheres dispersed in n-butyl titanate-ethanol mixed solution (n-butyl titanate and Fe 3 o 4 @C The mass ratio of microspheres is 8:0.6, the mass volume ratio of n-butyl titanate and ethanol is 1:8), after ultrasonic mixing, the nickel nitrate-ethanol mixture (nickel nitrate and Fe 3 o 4 The mass ratio of @C microspheres is 5:1, the mass volume ...

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Abstract

The invention discloses a preparation method of a nano motor adsorbing material, which comprises the following steps of: by using Fe3O4 as a carrier, reducing and loading C on the surfaces of Fe3O4 nanoparticles to obtain Fe3O4@C, adsorbing and reducing TiO2 and transition metal oxide and wrapping the surface of magnetic Fe3O4 with the TiO2 and transition metal oxide to obtain Fe3O4@TiO2<-> metaloxide microspheres; and then mixing lauryl sodium sulfate, a quaternary ammonium salt organic matter solution, a polycaprolactone solution and a chloroform solution containing Fe3O4@TiO2<-> metal oxide microspheres, and reacting to obtain the nano motor adsorbing material with an asymmetric shape. The material prepared by the method disclosed by the invention can generate bubble propelling motionby decomposing hydrogen peroxide, and can also generate concentration gradient of a photocatalytic product for motion by utilizing photocatalytic degradation of organic pollutants in wastewater so asto promote adsorption of the adsorbing material to arsenic elements in the environment; meanwhile, due to the existence of ferroferric oxide, a nano motor can be easily recycled by utilizing the magnetism of ferroferric oxide, so that the nano motor can be recycled; and the nano motor has a good adsorption effect on arsenic elements in a water environment, and has good separability and reusability.

Description

technical field [0001] The invention belongs to the technical field of nanomaterial preparation and application, and in particular relates to a preparation method of a nanomotor adsorption material and its application in selectively enriching and separating As ions in water. Background technique [0002] With the rapid development of global industrialization, heavy metal elements such as chromium, manganese, mercury, arsenic, molybdenum and tungsten are widely used in industrial fields; during the smelting and use of these metal materials, a large amount of waste water and solid waste containing trace heavy metal ions It is directly or indirectly discharged into the environment, polluting natural water bodies and soil. Most of these heavy metals exist in the form of positively charged metal hydrate ions, and a small part can exist in the state of metal complex anions and oxoacid anions, such as arsenite (AsO2), which has a serious impact on human health. 3 3- ) and arsenat...

Claims

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Application Information

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IPC IPC(8): B01J20/10B01J20/30B01J23/745C02F1/28C02F1/30C02F1/72C02F101/30C02F101/10
CPCB01J20/103B01J20/06B01J23/745C02F1/281C02F1/30C02F1/725C02F2305/10C02F2101/103C02F2101/30B01J35/33B01J35/39
Inventor 瞿广飞杨灿任远川王芳梁率钰
Owner KUNMING UNIV OF SCI & TECH
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