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Preparation method of lanthanum carbonate micro-nano material with multi-core nested structure

A technology of nested structure and lanthanum carbonate, which is applied in the field of preparation of lanthanum carbonate micro-nano materials, can solve the problems of complex structure and difficult control of multi-core nested lanthanum carbonate micro-nano materials, and achieve mild conditions, large specific surface area, and reaction low cost effect

Active Publication Date: 2019-05-28
HENAN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the complexity and uncontrollability of the structure of the multi-core nested lanthanum carbonate micro-nano material, there are very few reports on it at home and abroad.

Method used

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  • Preparation method of lanthanum carbonate micro-nano material with multi-core nested structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Step S1: Dissolve 4 g of galactose in 30 mL of secondary water, and stir magnetically for 20 min to form a solution;

[0015] Step S2: Dissolve 0.01 mol of lanthanum chloride in 20 mL of secondary water, stir magnetically for 20 minutes, then add to the solution obtained in step S1, and stir magnetically for 10 minutes;

[0016] Step S3: Add 0.1 g of urea to the solution obtained in Step S2, stir magnetically for 30 min, then sonicate for 10 min, transfer to a 100 mL polytetrafluoroethylene reactor, raise the temperature to 180 °C at a heating rate of 5 °C / min and keep it for 12 h, then Naturally cooled to room temperature, centrifuged and washed, dried at 80°C for 12 hours to obtain a complex of carbon spheres and lanthanum ions;

[0017] Step S4: After grinding the composite of carbon spheres and lanthanum ions obtained in step S3, heat up to 500°C for 3 hours at a heating rate of 1°C / min and calcinate in an air atmosphere, and then cool naturally to room temperature ...

Embodiment 2

[0020] Step S1: Dissolve 5 g of galactose in 30 mL of secondary water, and stir magnetically for 20 minutes to form a solution;

[0021] Step S2: Dissolve 0.02 mol of lanthanum chloride in 20 mL of secondary water, stir magnetically for 20 minutes, then add to the solution obtained in step S1, and stir magnetically for 10 minutes;

[0022] Step S3: Add 0.2 g of urea to the solution obtained in Step S2, stir magnetically for 30 min, then sonicate for 10 min, transfer to a 100 mL polytetrafluoroethylene reactor, raise the temperature to 180 °C at a heating rate of 5 °C / min and keep it for 12 h, then Naturally cooled to room temperature, centrifuged and washed, dried at 80°C for 12 hours to obtain a complex of carbon spheres and lanthanum ions;

[0023] Step S4: After grinding the composite of carbon spheres and lanthanum ions obtained in step S3, heat up to 500°C for 3 hours at a heating rate of 1°C / min and calcinate in an air atmosphere, and then cool naturally to room temperat...

Embodiment 3

[0025] Step S1: Dissolve 4 g of lactose in 30 mL of secondary water, and stir magnetically for 20 min to form a solution;

[0026] Step S2: Dissolve 0.02 mol of lanthanum chloride in 20 mL of secondary water, stir magnetically for 20 minutes, then add to the solution obtained in step S1, and stir magnetically for 10 minutes;

[0027] Step S3: Add 0.4 g of urea to the solution obtained in Step S2, stir magnetically for 30 min, then sonicate for 10 min, transfer to a 100 mL polytetrafluoroethylene reactor, raise the temperature to 180 °C at a heating rate of 5 °C / min and keep it for 13 h, then Naturally cooled to room temperature, centrifuged and washed, dried at 80°C for 12 hours to obtain a complex of carbon spheres and lanthanum ions;

[0028] Step S4: After grinding the composite of carbon spheres and lanthanum ions obtained in step S3, heat up to 500°C for 3 hours at a heating rate of 3°C / min and calcinate in an air atmosphere, and then cool naturally to room temperature to...

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Abstract

The invention discloses a preparation method of a lanthanum carbonate micro-nano material with a multi-core nested structure. The preparation method of the lanthanum carbonate micro-nano material withthe multi-core nested structure comprises the steps that a carbohydrate source is dissolved into twice water, and magnetic stirring is carried out to form a solution; a lanthanum source is dissolvedinto the twice water and added into the solution after magnetic stirring; then, urea is added into an obtained solution, ultrasound is carried out after magnetic stirring, the solution is shifted intoa polytetrafluoroethylene reaction kettle, heating is carried out at a heating rate of 5 DEG C / min to 180 DEG C for keeping for 12-15h, then, natural cooling is carried out to a room temperature, anda compound of a carbon sphere and a lanthanum ion is obtained through drying after centrifugal washing; and the compound of the carbon sphere and the lanthanum ion is heated up to 500-550 DEG C for calcinating for 3h after grinding in an air atmosphere at a 1-5 DEG C / min heating rate, and then, natural cooling is carried out to the room temperature to obtain the lanthanum carbonate micro-nano material with the multi-core nested structure. The lanthanum carbonate micro-nano material with the multi-core nested structure has larger specific area and rich active sites, therefore, good applicationprospects in a sewage treatment aspect are achieved.

Description

technical field [0001] The invention belongs to the technical field of synthesis of inorganic functional materials, and in particular relates to a preparation method of lanthanum carbonate micro-nano material with a multi-core nested structure. Background technique [0002] In recent years, the development of nanomaterials with complex structures and special morphologies has grown exponentially. Core-shell nanomaterials are unique due to their low density, large surface area, easy functionalization of the core, good molecular loading capacity of the void space, and adjustable void space. performance, and its rich application prospects have aroused widespread concern. Multi-core inorganic micro-nano materials can effectively shorten the path of material or charge transport process, provide more abundant multi-center active sites, increase their specific surface area, etc., and strengthen their wide application in catalysis, drug loading and energy. Based on the many advantag...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01F17/00
Inventor 马晓明孟丽丽常毅汪一帆刘婷婷杨林郭玉明
Owner HENAN NORMAL UNIV
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