Carbon-nanotube-loaded multi-stage nanometer ferroferric oxide adsorbent and preparation method and application thereof

A technology of ferroferric oxide and carbon nanotubes, which is applied in chemical instruments and methods, adsorption water/sewage treatment, alkali metal oxides/hydroxides, etc., can solve the problems of cumbersome preparation of composite nanomaterials, and achieve important applications Value, good magnetism, effect of reducing usage cost

Active Publication Date: 2013-04-03
CHANGSHA RES INST OF MINING & METALLURGY
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Problems solved by technology

However, the preparation of composite nanomaterials is often cumbersome. Therefore, the research and development of environmentally friendly, low-

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  • Carbon-nanotube-loaded multi-stage nanometer ferroferric oxide adsorbent and preparation method and application thereof
  • Carbon-nanotube-loaded multi-stage nanometer ferroferric oxide adsorbent and preparation method and application thereof
  • Carbon-nanotube-loaded multi-stage nanometer ferroferric oxide adsorbent and preparation method and application thereof

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Embodiment

[0027] A carbon nanotube-loaded multi-level nanometer ferric oxide adsorbent includes carbon nanotubes and ferric oxide, and the carbon nanotubes are loaded with ferric oxide, and the ferric oxide is a multi-level nanostructure with a particle size of 50nm to 80nm; the mass fraction of multi-level nanometer ferric oxide in the adsorbent is 28%.

[0028] A preparation method of the above-mentioned carbon nanotube-loaded multi-stage nano-ferric oxide adsorbent, comprising the following steps:

[0029] 1. Preparation of oxidized carbon nanotubes: Add 2g of carbon nanotubes into a 250mL three-neck flask, the diameter of the carbon nanotubes is 30nm to 50nm, and then add 200mL of concentrated nitric acid with a concentration of 15mol / L to the three-neck flask During ultrasonic dispersion for 60 minutes, the resulting mixture was refluxed at 140°C for 14 hours. After the reflux was completed, the product was cooled to room temperature, the supernatant was decanted, and the resultant...

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Abstract

The invention discloses a carbon-nanotube-loaded multi-stage nanometer ferroferric oxide adsorbent and a preparation method and application of the carbon-nanotube-loaded multi-stage nanometer ferroferric oxide adsorbent. The adsorbent comprises a carbon nanotube and multi-stage nanometer ferroferric oxide loaded on the carbon nanotube, wherein the ferroferric oxide has the grain size of 30 to 80 nanometers and mass fraction of 25 to 35%. The preparation method of the adsorbent comprises the following steps in sequence: mixing the oxidized carbon nanotube with an organic reducing agent and an organic iron compound; transferring the mixture into a reacting kettle; thermally synthesizing through an in-situ solvent in an oil bath under an inert atmosphere at reaction temperature of 180 to 270 DEG C and pressure of 0.1 to 2.0 MPa; cooling the reacting product; washing; and drying in vacuum to obtain carbon-nanotube-loaded multi-stage nanometer ferroferric oxide adsorbent. The carbon-nanotube-loaded multi-stage nanometer ferroferric oxide adsorbent disclosed by the invention is high adsorbing performance and easy to separate and recovery; and the preparation method is simple and low in cost, and has a wide application prospect in the field of adsorbing heavy metal ions and organic pollutants from the wastewater.

Description

technical field [0001] The present invention relates to a preparation method of a loaded multi-stage nano-adsorbent and its application in complex separation and smelting of heavy metal wastewater, in particular to a carbon nanotube-loaded multi-stage nano-ferric oxide adsorbent and its preparation method and application. It belongs to the field of water treatment and water pollution prevention and control. Background technique [0002] Mineral dressing and smelting wastewater contain heavy metal compounds, because various organic and inorganic flotation reagents are used in ore flotation, and the flotation reagents are easy to form organic substances such as phenols after conversion, so the discharged wastewater often contains heavy metals and phenolic organic substances at the same time wait. Lee et al. reported that the coexistence of heavy metal mercury and organic 4-nonylphenol synergistically increases cytotoxicity, and the interaction of complex pollutants not only a...

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Application Information

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IPC IPC(8): B01J20/20B01J20/28B01J20/30C02F1/28
Inventor 邓景衡肖国光余侃萍杨国超曾娟田建利
Owner CHANGSHA RES INST OF MINING & METALLURGY
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