Aluminum oxide-loaded iron-manganese oxide composite material as well as preparation method and application thereof

An iron-manganese oxide, alumina-loaded technology, applied in chemical instruments and methods, oxidized water/sewage treatment, water pollutants, etc., can solve the problem of reducing the effective contact area between pollutants and iron-manganese oxides, iron-manganese oxides The particles are easy to agglomerate and reduce the pollutant removal effect, so as to achieve the effect of improving the removal performance, low production cost and easy separation.

Inactive Publication Date: 2021-03-05
JINAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the iron-manganese oxide particles that exist naturally or are prepared by traditional methods are easy to agglomerate, which reduces the effective contact area between pollutants and iron-manganese oxides, reduces its removal effect on pollutants, and limits its application in environmental remediation. application

Method used

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  • Aluminum oxide-loaded iron-manganese oxide composite material as well as preparation method and application thereof
  • Aluminum oxide-loaded iron-manganese oxide composite material as well as preparation method and application thereof
  • Aluminum oxide-loaded iron-manganese oxide composite material as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Example 1Fe-Mn@Al 2 o 3 Preparation of composite materials

[0035] Under the conditions of magnetic stirring, nitrogen protection and room temperature, 2.78g FeSO 4 ·7H 2 O was dissolved in 200 mL deionized water to obtain FeSO with a concentration of 0.05 mol / L 4 solution; 0.57g KMnO 4Dissolved in 200mL deionized water to obtain KMnO with a concentration of 0.0167mol / L 4 solution. Under nitrogen protection and room temperature, take 40mL of the above FeSO 4 The solution was added to 300mL deionized water, and then 0.41g of Al with a particle size of 180μm 2 o 3 Adding it in, magnetically stirred and reacted for 10min. Take 40mL of the above KMnO 4 The solution was added dropwise to the above system, and the addition was controlled within 5 minutes. The pH was quickly adjusted to 7.5 with 5 mol / L sodium hydroxide solution, and the mixing reaction was continued for 1 hour. After standing for 12 hours, it was centrifuged and washed with deionized water, repeat...

Embodiment 2

[0036] Example 2Fe-Mn@Al 2 o 3 Preparation of composite materials

[0037] Al in embodiment 1 2 o 3 Change the quality of 0.20g, and other conditions are the same, get Fe-Mn@Al 2 o 3 Composite materials, where Fe and Al 2 o 3 The molar ratio is 1:1.

[0038] Al in embodiment 1 2 o 3 Change the quality of 0.82g, and other conditions are the same, get Fe-Mn@Al 2 o 3 Composite materials, where Fe and Al 2 o 3 The molar ratio is 1:4.

[0039] Al in embodiment 1 2 o 3 Change the quality of 2.0g, and other conditions are the same, get Fe-Mn@Al 2 o 3 Composite materials, where Fe and Al 2 o 3 The molar ratio is 1:10.

Embodiment 3

[0040] Example 3Fe-Mn@Al 2 o 3 Preparation of composite materials

[0041] Al in embodiment 1 2 o 3 Change the particle size to 20nm, and other conditions are the same, get Fe-Mn@Al 2 o 3 Composite materials, where Fe and Al 2 o 3 The molar ratio is 1:2.

[0042] Al in embodiment 1 2 o 3 Change the quality of the mass to 0.20g, change the particle size to 20nm, and other conditions are the same, get Fe-Mn@Al 2 o 3 Composite materials, where Fe and Al 2 o 3 The molar ratio is 1:1.

[0043] Al in embodiment 1 2 o 3 Change the quality of the mass to 0.82g, change the particle size to 20nm, and other conditions are the same, get Fe-Mn@Al 2 o 3 Composite materials, where Fe and Al 2 o 3 The molar ratio is 1:4.

[0044] Al in embodiment 1 2 o 3 Change the quality of the mass to 2.0g, change the particle size to 20nm, and other conditions are the same, get Fe-Mn@Al 2 o 3 Composite materials, where Fe and Al 2 o 3 The molar ratio is 1:10.

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Abstract

The invention discloses an aluminum oxide-loaded iron-manganese oxide composite material as well as a preparation method and application thereof. The preparation method comprises the following steps:taking aluminum oxide as a carrier, firstly mixing a FeSO4 solution with Al2O3, then dropwise adding a KMnO4 solution into a reaction system, reacting the obtained turbid liquid at room temperature, and performing standing, centrifuging, washing and drying to obtain the Fe-Mn@Al2O3 composite material. The composite material effectively inhibits agglomeration of iron-manganese oxide particles, realizes a synergistic effect of iron-manganese oxide and Al2O3, improves the treatment effect on antimony in a water body, effectively reduces the toxicity of antimony, and reduces the preparation cost of the material. In addition, the composite material has very good acid resistance and alkali resistance, can rapidly achieve solid-liquid separation through gravity settling, and has wide applicationprospects in environmental remediation, especially in the field of water treatment.

Description

technical field [0001] The invention belongs to the technical field of environmental functional materials and water treatment, and in particular relates to an alumina-loaded iron-manganese oxide composite material and its preparation method and application. Background technique [0002] Antimony is a toxic and potentially carcinogenic metallic element. Antimony in the water environment mainly comes from natural activities such as rock weathering and surface runoff, as well as human activities such as mining. In general, the content of antimony in unpolluted waters is ≤1 μg / L, while the content of antimony in polluted waters can be as high as 100 times the natural level. Antimony can enter the human body through the respiratory tract, digestive tract or skin to cause antimony poisoning. Antimony exists mainly in the form of Sb(III) and Sb(V) in the environment, and trivalent antimony is more toxic than pentavalent antimony. The treatment and restoration of antimony in wate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/72C02F1/28C02F101/20
CPCC02F1/72C02F1/281C02F2101/20
Inventor 宫艳艳白杨
Owner JINAN UNIVERSITY
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