Fenton catalytic material as well as preparation method and application thereof

A catalytic material, Fenton's technology, is used in catalyst activation/preparation, chemical instruments and methods, physical/chemical process catalysts, etc. It can solve the problems of slow catalytic reaction rate and low activity, and achieve lower preparation costs and high catalytic activity. , the effect of mild reaction conditions

Inactive Publication Date: 2018-06-12
广州润方环保科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The object of the present invention is to provide a kind of Fenton catalytic material, also provide the method for preparing iron-doped cerium oxide class Fenton catalytic material simultaneously, to overcome the low activity of general heterogeneous phase class Fenton catalytic material, catalytic reaction rate is slower question

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  • Fenton catalytic material as well as preparation method and application thereof
  • Fenton catalytic material as well as preparation method and application thereof
  • Fenton catalytic material as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The preparation method of material FeCeOx belongs to coprecipitation method, comprises the following steps:

[0035] 1) Precursor preparation: Disperse soluble ferrous salt and cerium salt in 100ml of water at a molar ratio of 1:2, with a total metal ion concentration of 0.1mol / l, and stir evenly in a constant temperature water bath at 40°C; add an appropriate amount of Concentrated ammonia water, adjust the pH of the system to 9.3-9.5, continue to stir for 2 hours; keep the temperature unchanged, let it stand for 12 hours; then carry out solid-liquid separation, wash the obtained solid precipitate with deionized water 3 times, and place it in an oven at 105°C Dry for 10 hours to obtain the precursor.

[0036] (2) Calcination: The obtained precursor was placed in a muffle furnace, calcined at 500°C for 3 hours in an air atmosphere, and cooled naturally to obtain FeCeOx, an iron-doped ceria-like Fenton-like catalytic material.

[0037] figure 1 and figure 2 It is the...

Embodiment 2

[0039] The preparation method of material FeCeOx belongs to coprecipitation method, comprises the following steps:

[0040] 1) Precursor preparation: respectively disperse soluble ferrous salt and cerium salt in 100ml of water at a molar ratio of 1:0.5, 1:1, 1:2 and 1:3, the total metal ion concentration is 0.1mol / l, Stir evenly in a constant temperature water bath at 40°C; add an appropriate amount of concentrated ammonia water, adjust the pH of the system to 9.3-9.5, and continue stirring for 2 hours; keep the temperature unchanged, and leave it to age for 12 hours; then carry out solid-liquid separation and precipitate the obtained solid Wash 3 times with deionized water, dry in an oven at 105°C for 10 hours, and obtain the precursor.

[0041] (2) Calcination: The obtained precursors were placed in a muffle furnace and calcined at 500 °C for 3 h in an air atmosphere. After natural cooling, four different iron-doped ceria-like Fenton catalytic materials FeCeOx were obtained....

Embodiment 3

[0043] The impact of material FeCeO dosage on the removal of organic dye Rhodamine B (RhB) comprises the following steps:

[0044] 1) according to the material preparation method described in embodiment 1, prepare material FeCeOx;

[0045] 2) FeCeOx materials of different qualities were weighed and put into conical flasks equipped with 100ml 100mg / l RhB solution (pH=5.0), and the dosages of FeCeOx materials were respectively controlled to be 0.5g / L, 1.0g / L, 1.5 g / L and 2.0g / L, add 80mM hydrogen peroxide respectively.

[0046] 3) React the mixed solution in a shaker at a temperature of 35±1° C. at a speed of 250 r / min. Samples were taken at set time points for analysis.

[0047] Figure 4 It is the relationship diagram of the effect of the dosage of material FeCeOx on the removal of organic dye Rhodamine B (RhB). Figure 4It can be seen that the catalyst dosage increases from 0.5g / L to 1.5g / L, and the 2h dye degradation rate increases from about 40% to 90%, while the differ...

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Abstract

The invention relates to the technical field of polluted water restoration, in particular to a Fenton catalytic material. The catalytic material is an iron-doped cerium oxide material. The invention aims at providing a Fenton catalytic material and further provides a method for preparing an iron-doped cerium oxide Fenton catalytic material simultaneously so as to overcome the problems that a common non-homogeneous phase Fenton catalytic material is low in activity and relatively slow in catalytic reaction rate. The prices of raw materials adopted by the method are relatively low, the reactioncondition is mild and can be performed under ordinary pressure, a surface active agent and other organic solvents do not need to be used, the preparation cost is reduced, and pollution generated in the preparation process is reduced.

Description

technical field [0001] The invention relates to the technical field of remediation of polluted water bodies, in particular to a Fenton catalytic material and its preparation method and application. Background technique [0002] Chromium pollution mainly comes from chrome ore, metal smelting, electroplating, tanning and other industrial wastewater, waste gas and waste residue. Chromium is one of the essential trace elements for the human body, but excessive chromium is harmful to human health; hexavalent chromium is more toxic, more absorbed by the human body, has carcinogenic effects, and can accumulate in the body. Due to the wide application of chromium in industrial production, the amount of hexavalent chromium in the environment is gradually increasing, which will cause potential harm and threat to human and animal bodies. Therefore, developing and optimizing chromium pollution repair materials and treating chromium-polluted water bodies have become one of the current wa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/83B01J37/03B01J37/08C02F1/72
CPCB01J23/83B01J37/03B01J37/08C02F1/722C02F1/725C02F2305/023C02F2305/026
Inventor 方战强张暖钦
Owner 广州润方环保科技股份有限公司
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