Amphiphilic rod-shaped nano-cerium oxide and amphiphilic rod-shaped ceo 2 /ce 3+ Preparation method of active nanoparticles

A nano-cerium oxide, amphiphilic technology, applied in the preparation/treatment of cerium oxide/cerium hydroxide, rare earth metal compounds, lanthanide oxides/hydroxides, etc., can solve the difficult preparation of rod-shaped nano-cerium oxide, Poor dispersion effect, low activity and other problems, to achieve the effect of easy process production, low energy consumption and simple preparation process

Active Publication Date: 2021-09-07
NORTHEAST GASOLINEEUM UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of this, the present invention provides a kind of amphiphilic rod-shaped nano cerium oxide and amphiphilic rod-shaped CeO 2 / C 3+ The preparation method of active nanoparticles solves the problems of difficult preparation of rod-shaped nano-cerium oxide, poor dispersion effect and low activity due to strong polarity

Method used

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  • Amphiphilic rod-shaped nano-cerium oxide and amphiphilic rod-shaped ceo <sub>2</sub> /ce <sup>3+</sup> Preparation method of active nanoparticles
  • Amphiphilic rod-shaped nano-cerium oxide and amphiphilic rod-shaped ceo <sub>2</sub> /ce <sup>3+</sup> Preparation method of active nanoparticles
  • Amphiphilic rod-shaped nano-cerium oxide and amphiphilic rod-shaped ceo <sub>2</sub> /ce <sup>3+</sup> Preparation method of active nanoparticles

Examples

Experimental program
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Effect test

Embodiment 1

[0043] 1. Product preparation

[0044] Weigh 7 g of citric acid and add it to 20 mL of deionized water, stir well until it is completely dissolved, and continue stirring at 50°C for 12 min. Weigh 5g of cerium nitrate hexahydrate and add it into 10mL of deionized water and stir until it is completely dissolved and mark it as No. 1, then weigh 3g of cerium nitrate hexahydrate and dissolve it in 10mL of deionized water and mark it as No. 2. Use an acid burette to add the No. 1 solution dropwise at a rate of 3d / s to the citric acid solution being cooled and stirred, and continue to stir for 10 minutes after the addition is complete. Then the precipitation solution was aged at 50°C for 8h, filtered under reduced pressure, washed with deionized water, dried at 70°C for 3h, placed in a muffle furnace and roasted at 450°C for 3h to obtain amphiphilic rod-shaped nano-cerium oxide .

[0045] Put the amphiphilic rod-shaped nano-cerium oxide into No. 2 solution and ultrasonically stir f...

Embodiment 2

[0050] Weigh 15g of citric acid and add it into 20mL of deionized water, stir well until it is completely dissolved, and continue stirring at 25°C for 12min. Weigh 3g of cerium chloride heptahydrate and add it into 15mL of deionized water and stir until it is completely dissolved and mark it as No. 1, then weigh 1g of cerium chloride heptahydrate and dissolve it in 15mL of deionized water and mark it as No. 2. Use an acid burette to add the No. 1 solution dropwise at a rate of 1 d / s to the cooling and stirring citric acid solution, and continue stirring for 10 minutes after the addition is complete. Then the precipitation solution was aged at 25°C for 8h, filtered under reduced pressure, washed with deionized water, dried at 70°C for 3h, placed in a muffle furnace at 500°C for 4h, and then the amphiphilic rod-shaped nano oxide was obtained. cerium.

[0051] Put the amphiphilic rod-shaped nano-cerium oxide into the No. 2 solution and ultrasonically stir for 8 hours, filter and...

Embodiment 3

[0053] Weigh 1.5g of sodium citrate and add it into 20mL of deionized water, stir well until it is completely dissolved, and continue stirring at 0°C for 10min. Weigh 2.17g of cerium nitrate hexahydrate and add it into 15mL of deionized water and stir until it is completely dissolved and mark it as No. 1, then weigh 1.96g of cerium nitrate hexahydrate and dissolve it in 15mL of deionized water and mark it as No. 2. Use an acid burette to add the cerium nitrate solution dropwise at a speed of 0.5 d / s to the sodium citrate solution being cooled and stirred, and continue stirring for 10 minutes after the addition is completed. Then the precipitation solution was aged at 0°C for 6h, filtered under reduced pressure, washed with deionized water, dried at 80°C for 2h, placed in a muffle furnace at 500°C for 2h, and then the amphiphilic rod-shaped nano oxide cerium.

[0054] Put the rod-shaped nano-cerium oxide into the No. 2 solution and stir it ultrasonically for 2 hours, filter an...

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Abstract

The invention discloses amphiphilic rod-shaped nano cerium oxide and amphiphilic rod-shaped CeO 2 / C 3+ A method for preparing active nanoparticles, wherein the method for preparing amphiphilic rod-shaped nano-cerium oxide includes preparing an aqueous solution of a guide agent and an aqueous solution of a trivalent cerium salt; mixing and stirring the aqueous solution of the guide agent and the aqueous solution of a trivalent cerium salt to obtain a suspension; Standing and aging the suspension to obtain a precipitate; washing, drying, and roasting the precipitate to obtain the amphiphilic rod-shaped nano-cerium oxide; amphiphilic rod-shaped CeO 2 / C 3+ The preparation method of active nanoparticles comprises putting the amphiphilic rod-shaped nano cerium oxide into a second trivalent cerium salt solution, stirring and filtering to obtain a second precipitate; drying the second precipitate to obtain the amphiphilic Rod CeO 2 / C 3+ Active nanoparticles: solve the problems of difficulty in preparing rod-shaped nano-cerium oxide, poor dispersion effect and low activity due to strong polarity.

Description

technical field [0001] The invention relates to a nano cerium oxide material and a preparation method thereof. Background technique [0002] Rare earth elements are permanent magnets with high application value in the fields of rechargeable batteries, catalysts and anti-corrosion coatings. Among the derivatives of cerium element, cerium oxide is the most common, especially nano-cerium oxide. Due to its strong cation capture ability, excellent oxygen storage and release performance and strong absorption ability to ultraviolet rays, it is widely used in automobile exhaust purification, photocatalyst , mechanical polishing, ultraviolet absorption, fuel cell electrolyte and other fields have excellent performance and broad application prospects. Therefore, people are doing more and more research on nano-cerium oxide materials. With the deepening of research, the preparation methods of nano-cerium oxide are becoming more and more diverse. Common preparation methods include hydr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01F17/235C01F17/10B82Y40/00
Inventor 汪怀远范炜昊赵志强王池嘉李卡卡朱艳吉
Owner NORTHEAST GASOLINEEUM UNIV
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