Surface amination nanometer ferroferric oxide adsorbent and preparation method thereof

A technology of triiron tetroxide and surface amination, which is applied in chemical instruments and methods, alkali metal oxides/hydroxides, inorganic chemistry, etc. Magnetic separation, good adsorption, good stability

Inactive Publication Date: 2016-02-03
CHENGDU UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

These defects make the sulfide precipitation method not widely used in industry

Method used

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  • Surface amination nanometer ferroferric oxide adsorbent and preparation method thereof
  • Surface amination nanometer ferroferric oxide adsorbent and preparation method thereof
  • Surface amination nanometer ferroferric oxide adsorbent and preparation method thereof

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Embodiment 1

[0027] The preparation method of the surface aminated nanometer ferric oxide adsorbent provided in this embodiment comprises the following steps:

[0028] (1) Magnetic Nano Fe 3 o 4 Particle preparation

[0029] 1.59gFeCl 2 4H 2 O (0.008mol) and 3.78g FeCl 3 ·6H 2 O (0.014mol) was dissolved in 140mL of distilled water and mixed evenly; under mechanical stirring, 20mL of 3.5mol / L NaOH solution was added to the mixed solution, and after stirring for 30 minutes, the precipitate was magnetically separated to obtain nano-Fe 3 o 4 particle;

[0030] (2) Preparation of surface aminated nano-ferric oxide adsorbent

[0031] 1) The prepared nano-Fe 3 o 4 Particles were added to the ethanol solution prepared by mixing 64mL distilled water and 200mL ethanol, and after ultrasonic treatment for 10 minutes, press nano-Fe 3 o 4 The molar ratio of particles to TEOS is 1:8, add TEOS, and continue to sonicate for 10 minutes;

[0032] 2) Under mechanical stirring, add NH 3 ·H 2 0, ...

Embodiment 2

[0035] The preparation method of the surface aminated nanometer ferric oxide adsorbent provided in this embodiment comprises the following steps:

[0036] (1) Magnetic Nano Fe 3 o 4 Particle preparation

[0037] 1.59gFeCl 2 4H 2 O (0.008mol) and 4.31gFeCl 3 ·6H 2 O (0.016mol) was dissolved in 140mL of distilled water and mixed evenly; under mechanical stirring, 20mL of 3.5mol / L NaOH solution was added to the mixed solution, and after stirring for 50 minutes, the precipitate was magnetically separated to obtain nano-Fe 3 o 4 particle;

[0038] (2) Preparation of surface aminated nano-ferric oxide adsorbent

[0039] 1) The prepared nano-Fe 3 o 4 Particles were added to the ethanol solution prepared by mixing 60mL distilled water and 300mL ethanol, and after ultrasonic treatment for 30 minutes, press nano-Fe 3 o 4 The molar ratio of particles to TEOS is 1:10, add TEOS, and continue to sonicate for 30 minutes;

[0040] 2) Under mechanical stirring, add NH 3 ·H 2 0, ...

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Abstract

The invention discloses a surface amination nanometer ferroferric oxide adsorbent and a preparation method thereof. The method comprises the following steps: preparing magnetic nano ferroferric oxide by adopting a coprecipitation method, coating the surface of the nano ferroferric oxide with a SiO2 shell layer by adopting a sol-gel method by taking tetraethoxysilane as a silicon source, and preparing the surface amination nanometer ferroferric oxide adsorbent by taking 3-Aminopropyltriethoxysilane (APTES) as a coupling agent. The grain diameter of the adsorbent is 80-100nm; the grain diameter of the nano ferroferric oxide is 10-20nm. The surface amination nanometer ferroferric oxide adsorbent is high in adsorptive property, easy to separate and recover, simple in preparation method, and low in cost.

Description

technical field [0001] The invention relates to a nanometer ferric oxide adsorbent and a preparation method thereof, in particular to a surface aminated nanometer ferric oxide adsorbent and a preparation method thereof. Background technique [0002] In recent years, with the rapid economic development and the continuous acceleration of the industrialization process, the pollution of water environment has become increasingly serious. The pollution of heavy metal ions in water is one of them. At present, the sources of heavy metal ions mainly include mining, smelting, electroplating and other chemical industries. Heavy metals can cause obvious toxicity to microorganisms even at low concentrations, and can directly enter water, air and soil, causing serious harm to the natural environment, human health and the survival of various organisms. Therefore, it is of great significance to solve the problem of heavy metal ion pollution in industrial wastewater. [0003] The concentr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/22B01J20/28B01J20/30
Inventor 王美平邓飞
Owner CHENGDU UNIVERSITY OF TECHNOLOGY
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