Unlock instant, AI-driven research and patent intelligence for your innovation.

Preparation method of modified Fe3O4/La-Ce co-doped barium ferrite

A barium ferrite and modification technology is applied in the field of preparation of modified Fe3O4/La-Ce co-doped barium ferrite, which can solve the problems of poor adsorption properties of adsorbent materials and achieve the effect of good adsorption properties

Inactive Publication Date: 2018-08-24
SHANGLUO UNIV
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Purpose of the invention: the present invention makes improvements to the problems existing in the above-mentioned prior art, that is, the present invention discloses modified Fe 3 o 4 / La-Ce co-doped barium ferrite preparation method, which solves the shortcomings of poor adsorption of existing adsorption materials

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment 1

[0035] Modified Fe 3 o 4 The preparation method of / La-Ce co-doped barium ferrite comprises the following steps:

[0036] (1) Preparation of La-Ce co-doped barium ferrite powder

[0037] (11) 7 molar parts of ferric nitrate, 1 molar part of barium nitrate, 0.1 molar part of lanthanum nitrate, and 0.1 molar part of cerium nitrate are added to 80 molar parts of water and stirred evenly to form a mixed solution A;

[0038] (12) 9 molar parts of citric acid are added to 80 molar parts of water and stirred evenly to form solution B;

[0039] (13) Mix the mixed solution A and the solution B to obtain the mixed solution C, and then enter step (14);

[0040] (14) The mixed solution C is heated in a water bath at 60°C and slowly stirred and evaporated, then 18 molar parts of ethylene glycol are added to the mixed solution C, and the pH of the mixed solution C is adjusted to 2 with concentrated ammonia water, and the mixed solution C is continuously mixed. Heat in a water bath at 60°...

specific Embodiment 2

[0062] Modified Fe 3 o 4 The preparation method of / La-Ce co-doped barium ferrite comprises the following steps:

[0063] (1) Preparation of La-Ce co-doped barium ferrite powder

[0064] (11) 10 molar parts of ferric nitrate, 1 molar part of barium nitrate, 0.4 molar parts of lanthanum nitrate, and 0.4 molar parts of cerium nitrate are added to 110 molar parts of water and stirred evenly to form mixed solution A;

[0065] (12) 12 molar parts of citric acid are added to 110 molar parts of water and stirred evenly to form solution B;

[0066] (13) Mix the mixed solution A and the solution B to obtain the mixed solution C, and then enter step (14);

[0067] (14) The mixed solution C is heated in a water bath at 90°C and slowly stirred and evaporated, then 25 molar parts of ethylene glycol are added to the mixed solution C, and the pH of the mixed solution C is adjusted to 3 with concentrated ammonia water, and the mixed solution C is continuously mixed. Heat in a water bath at...

specific Embodiment 3

[0089] Modified Fe 3 o 4 The preparation method of / La-Ce co-doped barium ferrite comprises the following steps:

[0090] (1) Preparation of La-Ce co-doped barium ferrite powder

[0091] (11) 8 molar parts of ferric nitrate, 1 molar part of barium nitrate, 0.25 molar parts of lanthanum nitrate, and 0.25 molar parts of cerium nitrate are added to 95 molar parts of water and stirred evenly to form mixed solution A;

[0092] (12) 10 molar parts of citric acid are added to 100 molar parts of water and stirred evenly to form solution B;

[0093] (13) Mix the mixed solution A and the solution B to obtain the mixed solution C, and then enter step (14);

[0094] (14) The mixed solution C is heated in a water bath at 75°C and slowly stirred and evaporated, then 22 molar parts of ethylene glycol are added to the mixed solution C, and the pH of the mixed solution C is adjusted to 2 with concentrated ammonia water, and the mixed solution C is continuously mixed. Heat in a water bath at...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a preparation method of modified Fe3O4 / La-Ce co-doped barium ferrite. The preparation method comprises the following steps: 1) preparing the La-Ce co-doped barium ferrite; 2)placing 5-12 mol parts of the La-Ce co-doped barium ferrite powder in 50-200 mol parts of water, and dissolving the material to obtain a mixed solution; 3) adding 50-200 mol parts of modified Fe3O4 nanoparticles in the mixed solution, performing continuous ultrasonic mixing for 3-7 h to obtain the uniform mixed solution; 4) evaporating the mixed solution to a viscous state at the temperature of 70-100 DEG C, and performing vacuum drying at the temperature of 80-140 DEG C to a constant weight to obtain a xerogel; and 5) sintering the xerogel for 1-4 h at the temperature of 200-500 DEG C to obtain the modified Fe3O4 / La-Ce co-doped barium ferrite. The preparation method of the modified Fe3O4 / La-Ce co-doped barium ferrite has good adsorptivity on heavy metal waste water, and the adsorption rate can achieve as high as 99.7%.

Description

technical field [0001] The invention belongs to the field of composite material science and engineering, in particular to modified Fe 3 o 4 / La-Ce co-doped barium ferrite preparation method. Background technique [0002] Heavy metal wastewater refers to wastewater containing heavy metals discharged from industrial production processes such as mining and metallurgy, machinery manufacturing, chemical industry, electronics, and instrumentation. Heavy metal (such as cadmium, nickel, mercury, zinc, etc.) wastewater is one of the most serious environmental pollution and one of the most harmful industrial wastewater to humans, and its water quality and quantity are related to the production process. Heavy metals in wastewater generally cannot be decomposed and destroyed, but can only transfer their existing positions and change their physical and chemical forms. [0003] The treatment method of heavy metal wastewater is firstly to reform the production process, so that no or les...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/40C04B35/622B01J20/06C02F1/28C02F101/20
CPCB01J20/06C02F1/281C02F2101/20C04B35/2641C04B35/622C04B2235/3215C04B2235/3227C04B2235/3229C04B2235/443
Inventor 李倩王香婷常亮亮庄肃凯
Owner SHANGLUO UNIV