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Preparation method of hydrophobic material with surface modified by Fe3O4 nanoflower

A technology of hydrophobic materials and nanoflowers, which is applied in the field of nanomaterials to achieve the effects of stable performance, enhanced stability and excellent hydrophobic performance

Inactive Publication Date: 2015-01-07
NORTHWEST NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the technology of in situ growth of nanoflower materials on iron sheets under magnetic induction has not been reported yet.

Method used

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  • Preparation method of hydrophobic material with surface modified by Fe3O4 nanoflower
  • Preparation method of hydrophobic material with surface modified by Fe3O4 nanoflower
  • Preparation method of hydrophobic material with surface modified by Fe3O4 nanoflower

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] (1) Cut a pure iron sheet of 15mm×15mm×2mm, sand it with sandpaper and wash with dilute nitric acid and distilled water to remove the oxide film on the surface of the pure iron sheet; immerse the iron sheet in 20mL 0.5mol / L nitric acid solution And put the reactor into the tube furnace. A magnet is placed on the bottom of the outer side of the tube furnace, which attracts the iron pieces to the bottom of the reactor; heat the tube furnace to 50°C, and make the iron pieces react with the nitric acid solution for 5 minutes.

[0030] (2) Slowly pass ammonia gas into the reactor until the pH of the reaction solution is 9; the temperature of the tube furnace is increased to 230°C and maintained for 45 minutes.

[0031] (3) Take out the reactor, cool to room temperature, rinse with distilled water and ethanol several times, and dry in vacuum to obtain Fe 3 O 4 Nano-flower modified iron sheet product. The hydrophobicity of the product was tested with a contact angle meter and foun...

Embodiment 2

[0034] (1) Cut the pure iron sheet of 15mm×15mm×2mm, polish with sandpaper and wash with dilute nitric acid and distilled water respectively to remove the oxide film on the surface of the pure iron sheet; immerse the iron sheet in 20mL 0.5mol / L nitric acid solution And put the reactor into the tube furnace. A magnet is placed on the bottom of the outer side of the tube furnace, which attracts the iron pieces to the bottom of the reactor; heat the tube furnace to 50°C, and make the iron pieces react with the nitric acid solution for 5 minutes.

[0035] (2) Slowly feed ammonia gas into the reactor until the pH of the reaction solution is 10; the temperature of the tube furnace is increased to 260°C and kept for 60 minutes.

[0036] (3) Take out the reactor, cool to room temperature, rinse with distilled water and ethanol several times, and dry in vacuum to obtain Fe 3 O 4 Nano-flower modified iron sheet product. A contact angle meter was used to test the hydrophobic properties of th...

Embodiment 3

[0039] (1) Cut pure iron flakes of 15mm×15mm×2mm, polish with sandpaper and wash with dilute nitric acid and distilled water respectively to remove the oxide film on the surface of the pure iron flakes; immerse the iron flakes in 20mL 1.5mol / L nitric acid solution And put the reactor into the tube furnace. A magnet is placed on the bottom of the outer side of the tube furnace, which attracts the iron pieces to the bottom of the reactor; heat the tube furnace to 50°C, and make the iron pieces react with the nitric acid solution for 5 minutes.

[0040] (2) Slowly pass ammonia gas into the reactor until the pH of the reaction solution is 11; the temperature of the tube furnace is increased to 260°C and kept for 60 minutes.

[0041] (3) Take out the reactor, cool to room temperature, rinse with distilled water and ethanol several times, and dry in vacuum to obtain Fe 3 O 4 Nano-flower modified iron sheet product. A contact angle meter was used to test the hydrophobic properties of the...

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Abstract

The invention provides a hydrophobic material with a surface modified by Fe3O4 nanoflower. A preparation method comprises the following steps of: soaking a cleaned pure iron sheet in a nitric acid solution with concentration of 0.5-2.5mol / L, and enabling reaction at 30-50 DEG C for 5-15 minutes; slowly introducing ammonia gas into the reaction system in the condition of external magnetic field so that the acid solution of the system gradually becomes alkaline; heating the system to 230-285 DEG C, and enabling reaction for 30-90 minutes to generate black brown Fe3O4 particles on the iron sheet; cooling, washing and drying to obtain a hydrophobic material with a surface modified by Fe3O4 nanoflower, wherein the contact angle can reach 136.23-146.12 degrees according to measurement, and good hydrophobicity is realized; and performing heat treatment of the hydrophobic material at 150-200 DEG C to obtain a hydrophobic material modified by gamma-Fe2O3 nanoflower and having stable performance and excellent hydrophobicity. The hydrophobic material provided by the invention has a broad application prospect in the field of antiseptic and self-cleaning materials.

Description

technical field [0001] The invention belongs to the technical field of nanomaterials and relates to a Fe 3 o 4 The preparation method of nanometer material, especially relate to a kind of surface by Fe 3 o 4 Hydrophobic material modified by nanoflowers and its preparation method. Background technique [0002] The preparation of nano-magnetic materials is an important research topic in the field of nano-materials, and the morphology of nano-materials has a very important impact on its performance, such as grain size, grain morphology, surface microstructure, etc. directly affect the physical and chemical properties of materials and uses. Therefore, it is a very meaningful research work to explore new preparation technologies, realize the controllable shape of materials, and obtain nano-magnetic materials with superior performance. At present, the research on the shape-controlled synthesis and application of nano-metal materials is still in its infancy. Selective synthes...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G49/08B82Y30/00
Inventor 莫尊理张春张平郭瑞斌
Owner NORTHWEST NORMAL UNIVERSITY
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