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Iron oxyhydroxide nanorod/foam carbon composite material and its preparation method and application

A technology of iron oxyhydroxide and composite materials, applied in chemical instruments and methods, other chemical processes, water/sewage treatment, etc., can solve the problems of small adsorption capacity, difficult separation and recovery, and low efficiency, and achieve strong adsorption capacity and easy Separation and recovery, the effect of fast mass transfer rate

Active Publication Date: 2020-10-30
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the existing technology, traditional adsorbents such as activated carbon, zeolite, metal oxides, and clay are widely used in the removal of arsenic from water bodies, but these traditional adsorbents have problems such as small adsorption capacity, low efficiency, and difficulty in separation and recovery.

Method used

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  • Iron oxyhydroxide nanorod/foam carbon composite material and its preparation method and application
  • Iron oxyhydroxide nanorod/foam carbon composite material and its preparation method and application
  • Iron oxyhydroxide nanorod/foam carbon composite material and its preparation method and application

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Embodiment 1

[0033] An iron oxyhydroxide nanorod / foam carbon composite material is prepared by the following steps:

[0034] Step a, 120 μL of hydrochloric acid solution with a solute mass fraction of 37.5%, 11.88 mL of deionized water and 28 mL of acetonitrile were mixed together to prepare a first reaction solution.

[0035] Step b, heat the foam at a heating rate of 5°C per minute until the temperature rises to 700°C, keep it warm for 2 hours, then put it into a nitric acid solution with a concentration of 3.5mol / L, and boil it at 120°C for 2 hours to prepare Acidified carbon foam was obtained.

[0036] Step c, the FeCl of 0.0135mol 3 and 0.04mol NaNO 3 Dissolve in 40ml of the first reaction solution prepared in step a, and add the acidified foam carbon prepared in step b after stirring for 30 minutes, continue stirring for 1 hour, then transfer it to a 50ml reaction kettle, and carry out at 100°C The hydrothermal reaction was performed for 4 hours, and then washed several times with...

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Abstract

The invention discloses an iron oxyhydroxide nanorod / foam carbon composite material and a preparation method and application thereof. According to the iron oxyhydroxide nanorod / foam carbon composite material, foam carbon is used as a substrate, and iron oxyhydroxide nanorods are uniformly loaded on the substrate. The iron oxyhydroxide nanorod / foam carbon composite material is prepared by uniformly loading iron oxyhydroxide nanorods on the foam carbon substrate through a hydrothermal synthesis method. The iron oxyhydroxide nanorod / foam carbon composite material can be directly used as an adsorbent for removing arsenic from a water body. The iron oxyhydroxide nanorod / foam carbon composite material has strong adsorption capacity and less secondary pollution, is easy to separate and recover, has fast mass transfer rate, is low-cost, and can achieve rapid, efficient and selective removal of arsenic in a water body.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to an iron oxyhydroxide nanorod / foam carbon composite material and a preparation method and application thereof. Background technique [0002] Arsenic is a highly toxic pollutant with teratogenic and mutagenic effects, which widely exists in nature. If the human body is exposed to environments with low or high concentrations of arsenic for a long time, it will cause irreversible harm to the digestive system, respiratory system, nervous system, cardiovascular system, reproductive system, etc., and even cause death in severe cases. The World Health Organization stipulates that the concentration limit of arsenic in human drinking water is 10 μg / L. Arsenic in the water body environment is mainly trivalent arsenic (H 3 AsO 3 、H 2 AsO 3 - 、HAsO 3 2- ) and pentavalent arsenic (H 3 AsO 4 、H 2 AsO 4 - 、HAsO 4 2- ) form, and the toxicity of trivalent arsenic and the mo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/28B01J20/20B01J20/30C02F101/10C02F101/20
CPCB01J20/06B01J20/20B01J20/28007C02F1/28C02F1/281C02F1/283C02F2101/103C02F2101/20
Inventor 张云霞葛骁张海民汪国忠唐晓先赵惠军
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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