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Industrialized process for preparing cerium oxide nano-rods doped with rare earth elements

A technology of rare earth elements and cerium oxide, which is applied in the direction of nanostructure manufacturing, nanotechnology, nanotechnology, etc., can solve the problems of difficult large-scale industrial production, difficult removal of product washing, limited application, etc., and achieve easy large-scale industrial production, Low cost and simple effect

Inactive Publication Date: 2010-04-14
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

High temperature and high pressure hydrothermal treatment has high requirements on equipment, and the addition of templates or surfactants will make it difficult to wash and completely remove the product, so it is difficult to achieve large-scale industrial production, which limits its application
Although pure CeO 2 Report on the preparation method of nanorods at normal temperature and pressure [(a) Pang, C.; Zhang, D; Shi, L.; Fang, J.; Eur.J.Inorg.Chem.2008, 2429; (b) Du, N.; Zhang, H.; Chen, B.; Ma, X.; Yang, D.; J.Phys.Chem.C 2007, 111, 12677], but CeO 2 The normal temperature and pressure preparation method of nanorods has not been reported yet

Method used

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  • Industrialized process for preparing cerium oxide nano-rods doped with rare earth elements
  • Industrialized process for preparing cerium oxide nano-rods doped with rare earth elements
  • Industrialized process for preparing cerium oxide nano-rods doped with rare earth elements

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Experimental program
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Effect test

Embodiment 1

[0029] Weigh Ce(NO 3 ) 3 ·6H 2 O 7.82g was dissolved in 100ml deionized water, stirred and dissolved to obtain a clarified cerium nitrate solution, 150ml 25% ammonia water was taken, placed in a large beaker, at room temperature, the cerium nitrate solution was slowly added dropwise in excessive ammoniacal liquor, constantly stirred during the addition process, And control the pH > 10, after the dropwise addition, stop stirring, seal the large beaker containing the mixed solution, and statically age at room temperature for 48 hours, filter the obtained precipitate, wash several times with deionized water, and dry overnight at 100°C to obtain the long 50- Cerium oxide nanorods with a diameter of 100nm and a diameter of 10-20nm.

Embodiment 2

[0031] Weigh Ce(NO 3 ) 3 ·6H 2 O 6.33g and La(NO 3 ) 3 ·6H 2 O 0.60g was dissolved in 100ml of deionized water, stirred and dissolved to obtain a clear nitrate mixed solution, 150ml of 25% ammonia water was taken, placed in a large beaker, at room temperature, the nitrate mixed solution was slowly added dropwise to excess ammonia water, and the addition process continued Stir, and control the pH>10. After the dropwise addition, stop stirring, seal the large beaker containing the mixed solution, and statically age at room temperature for 48 hours. The resulting precipitate is filtered, washed with deionized water several times, and dried overnight at 100°C to obtain 50-100nm, diameter 10-20nm rare earth element La doped cerium oxide nanorods.

Embodiment 3

[0033] Weigh Ce(NO 3 ) 3 ·6H 2 O 13.03g and Pr(NO 3 ) 3 ·6H 2 O 1.45g was dissolved in 100ml deionized water, stirred and dissolved to obtain a clarified nitrate mixed solution, 150ml 25% ammonia water was taken, placed in a large beaker, at room temperature, the nitrate mixed solution was slowly added dropwise to excessive ammonia water, and the addition process continued Stir, and control the pH>10. After the dropwise addition, stop stirring, seal the large beaker containing the mixed solution, and statically age at room temperature for 48 hours. The resulting precipitate is filtered, washed with deionized water several times, and dried overnight at 100°C to obtain 50-100nm, diameter 10-20nm rare earth element Pr doped cerium oxide nanorods.

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Abstract

The invention discloses an industrialized process for preparing cerium oxide nano-rods doped with rare earth elements, and particularly relates to an industrialized process for preparing cerium oxide (CeO2) nano-rods doped with rare earth elements (RE) La, Pr, Nd, Sm, Eu, Gd or Y. The process adopts rare earth nitrate as precursors, ammonia water or sodium hydroxide as precipitants, operations such as depositing, ageing, washing, drying and the like are performed under the conditions of room temperature and normal pressure. By controlling reaction conditions, particularly controlling doped elements, doped quantity and the like, the process realize effective control of rod-like appearance. Obtained products can still maintain fine rod-like appearance after being baked under the high temperature of 600 DEG C. The process has simple and mature technology and inexpensive raw materials, the obtained products are easy to be washed, suitable for large-scale preparation and industrialized production, and have wide application prospect in the fields such as catalytic reaction, fuel batteries, electronic devices, light-emitting materials, biological medicines, polishing powders and the like.

Description

technical field [0001] The invention relates to an industrialized preparation method of cerium oxide nanorods doped with rare earth elements, and belongs to the technical field of rare earth material preparation technology. Background technique [0002] Cerium oxide (CeO 2 ) has excellent oxygen storage and release functions, high-temperature rapid oxygen vacancy diffusion ability, good electrical and optical properties, and can be widely used in catalytic reactions, fuel cells, electronic devices, luminescent materials, biomedicine, polishing powder and other fields [(a) Eleonora, A.; Jordi, L.; Marta, B.; Alessandro, T.J.Cata.2005, 234, 88; (b) Deng, W.L.; .2006, 45, 2285; (c) Rupp, J.L.M.; Drobek, T.; Rossi, A.; Z.L.; Paras, M.S.; Santora, B.; Sutorik, A.C.; Sayle, T.X.; [0003] CeO 2 The thermal stability of CeO is poor, and it is easy to sinter and damage the oxygen storage performance, which limits the CeO 2 Applications. Studies have shown that in the cubic flu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B82B3/00B82B1/00
Inventor 张昭良辛颖韩栋王仲鹏张业新李昕
Owner UNIV OF JINAN
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