CN101386420B - Composite nano cerium dioxide sol - Google Patents
Composite nano cerium dioxide sol Download PDFInfo
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- CN101386420B CN101386420B CN2007101216855A CN200710121685A CN101386420B CN 101386420 B CN101386420 B CN 101386420B CN 2007101216855 A CN2007101216855 A CN 2007101216855A CN 200710121685 A CN200710121685 A CN 200710121685A CN 101386420 B CN101386420 B CN 101386420B
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- fatty alcohol
- polyoxyethylene ether
- nano
- cerium dioxide
- dioxide sol
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Abstract
The invention relates to a compound nanometer ceria sol which is characterized in that the sol comprises nanometer ceria and fatty alcohol polyoxyethylene ether. The compound of the network structures of the nanometer ceria and the fatty alcohol polyoxyethylene ether in the compound nanometer ceria sol is beneficial to the application of the catalytic performance, and the application prospect in sterilization and hindrance of ultraviolet is very wide.
Description
Technical field
The present invention relates to a kind of composite nano cerium dioxide sol, particularly a kind of fatty alcohol-polyoxyethylene ether composite nano cerium dioxide sol.
Background technology
In recent years, adopt the multinomial catalyzed oxidation technology of semi-conductor to eliminate environmental pollution and obtain people's approval day by day, and become a high-end technology in the environmental pollution improvement gradually.
Nano ceric oxide (CeO
2) as the novel nano-material of good catalytic performance, become the focus of this technical field research.Nano ceric oxide is a kind of commercial catalysts, is widely used in electronic industry, fields such as protective coating.But in the practical application, how could its good performance of more effective performance but become the difficult point of research.
Present adoptable method focuses on two aspects: first is exactly to adopt liquid phase method to prepare the colloidal coating of nano material earlier, then with its coating on the surface of glass or tricot.But the nano particle of this method preparation comes off easily, makes the material loss of catalytic activity; The secondth, adopt organic tackiness agent to mix, but the required tackiness agent of this method cost an arm and a leg very difficult practical application with nano particle.
The disclosed method with collosol and gel of Chinese invention patent ZL03107272.0 is prepared the nano ceric oxide particle, and its prepared powder body material easily comes off, and exists certain defective in the application facet of protective coating.
Therefore, provide a kind of with low cost, it is convenient to store, and the composite nano cerium dioxide of difficult drop-off just becomes the problem that present technique field urgent need will solve.
Summary of the invention
The purpose of this invention is to provide a kind of with low costly, it is convenient to store, and the composite nano cerium dioxide sol of difficult drop-off.
Above-mentioned purpose of the present invention reaches by the following technical programs:
A kind of composite nano cerium dioxide sol is characterized in that: comprise nano ceric oxide and fatty alcohol-polyoxyethylene ether; The content of described nano ceric oxide is 1-3 weight %, and the content of described fatty alcohol-polyoxyethylene ether is 3-5 weight %.
A kind of optimal technical scheme is characterized in that: described nano ceric oxide embeds in the described fatty alcohol-polyoxyethylene ether.
The common state of described fatty alcohol-polyoxyethylene ether polymer is curling shape; fatty alcohol-polyoxyethylene ether is adsorbed in particle surface and forms layer protecting film; interparticle various association forces are played weaken or shielding effect; stop interparticle reunion, thereby improved the catalytic performance of nano ceric oxide.
A kind of optimal technical scheme is characterized in that: described nano ceric oxide size distribution is between 5-30nm; Described nano ceric oxide size distribution is between 5-15nm.
The preparation method of above-mentioned composite nano cerium dioxide sol, its step is as follows:
(1) under magnetic agitation, ceric ammonium nitrate is dissolved in the acid aqueous solution (0.5-1molL of preparation cerium salt
-1) 200ml, add the fatty alcohol-polyoxyethylene ether (AEO-15 that adopts blue star auxiliary reagent factory, Xingtai to produce, white lotion) of 1-3g again; The concentration of final preparation cerium salt is 0.3-0.8molL
-1, the concentration of fatty alcohol-polyoxyethylene ether is 5-10gL
-1, be labeled as solution A 1;
(2) adopt dehydrated alcohol, (ammoniacal liquor adopts 1molL to ammoniacal liquor
-1, the proportioning between the two is volume ratio 1: 1) and be mixed with solution, be labeled as solution B 1;
(3) step (1) gained solution A 1 being placed temperature is on 30 ℃ the magnetic stirring apparatus, is constantly dripping step (2) gained solution B 1 gradually under the condition of stirring, till forming colloidal sol.
Acid is nitric acid or sulfuric acid described in the described step (1).
Beneficial effect of the present invention:
The present invention is a kind of colloidal sol novel material by the fatty alcohol-polyoxyethylene ether composite nano cerium dioxide of liquid phase method preparation.The method applied in the present invention technology is simple, the relatively good control of processing parameter.The compound application that more helps its catalytic performance of nano ceric oxide and fatty alcohol-polyoxyethylene ether, in sterilization, the application prospect that hinders aspects such as ultraviolet ray very extensively.Prepared nano composite material has more excellent catalytic performance, and it is owing to embed the fatty alcohol-polyoxyethylene ether material in structure, the Stability Analysis of Structures of the coating prod of gained, and difficult drop-off, with low cost.The common state of the fatty alcohol-polyoxyethylene ether that is adopted is curling shape, invests particle surface and forms layer protecting film, interparticle various association forces is played weaken or shielding effect, has stoped interparticle reunion, nano Ce O
2Can well embed among its structure, thereby improve the catalytic performance of nano ceric oxide.
The present invention will be further described below by the drawings and specific embodiments, but and do not mean that restriction to the present invention protection.
Description of drawings
Fig. 1 is nano Ce O of the present invention
2X-ray diffractogram (XRD);
Fig. 2 is nano Ce O of the present invention
2Transmission electron microscope (TEM) photo;
Fig. 3 is nano Ce O of the present invention
2The selected area electron diffraction photo.
Embodiment
Embodiment 1:
The main raw material(s) that present embodiment is used: ceric ammonium nitrate, fatty alcohol-polyoxyethylene ether, concentrated nitric acid, ammonia soln, dehydrated alcohol etc.
(1) under magnetic agitation, ceric ammonium nitrate is dissolved in the nitric acid aqueous solution (0.5molL of preparation cerium salt
-1) 200ml, add the fatty alcohol-polyoxyethylene ether (AEO-15 that adopts blue star auxiliary reagent factory, Xingtai to produce, white lotion) of 2g again.The concentration of final preparation cerium salt is 0.3molL
-1, the concentration of fatty alcohol-polyoxyethylene ether is 10gL
-1, be labeled as solution A 1;
(2) adopt dehydrated alcohol and 1molL
-1Ammoniacal liquor, volume ratio is 1: 1, is mixed with solution, is labeled as solution B 1.
(3) step (1) gained solution A 1 being placed temperature is on 30 ℃ the magnetic stirring apparatus, is constantly dripping step (2) gained solution B 1 gradually under the condition of stirring, till forming colloidal sol.
Embodiment 2:
The main raw material(s) of present embodiment: ammonium cerous sulfate, fatty alcohol-polyoxyethylene ether, the vitriol oil, ammonia soln, dehydrated alcohol etc.
(1) under magnetic agitation, ammonium cerous sulfate is dissolved in the vitriol oil aqueous solution of preparation cerium salt, (1molL
-1) 200ml, add the fatty alcohol-polyoxyethylene ether (AEO-15 that adopts blue star auxiliary reagent factory, Xingtai to produce, white lotion) of 1g again.The concentration of final preparation cerium salt is 0.8molL
-1, the concentration of fatty alcohol-polyoxyethylene ether is 5gL
-1, be labeled as solution A 2;
(2) adopt dehydrated alcohol, (ammoniacal liquor adopts 1molL to ammoniacal liquor
-1, the proportioning between the two is volume ratio 1: 1) and be mixed with solution, be labeled as solution B 2.
(3) solution A 2 being placed temperature is on 30 ℃ the magnetic stirring apparatus, is constantly dripping solution B 2 gradually under the condition of stirring, till forming colloidal sol.
In order further to explain the present invention, with the CeO of the present invention's preparation
2Colloidal sol filters through precipitation, and washing obtains CeO
2Particulate is taken pictures respectively, obtains Fig. 1: X-ray diffraction (XRD) figure, Fig. 2: transmission electron microscope (TEM) photo, Fig. 3: selected area electron diffraction photo.
From X-ray diffractogram (XRD) measurement result of Fig. 1 sample, the characteristic diffraction peak of the resulting sample of the present invention is CeO
2Crystal.
From transmission electron microscope (TEM) photo of Fig. 2 sample, sample is of a size of Nano grade, and distribution of sizes is at 5-30nm.
The electron-diffraction diagram of choosing from Fig. 3 sample has diffraction spot, and sample is nano Ce O
2Monocrystalline.
Claims (3)
1. a composite nano cerium dioxide sol is characterized in that: comprise nano ceric oxide and fatty alcohol-polyoxyethylene ether; The content of described nano ceric oxide is 1-3 weight %, and the content of described fatty alcohol-polyoxyethylene ether is 3-5 weight %.
2. composite nano cerium dioxide sol according to claim 1 is characterized in that: described nano ceric oxide embeds among the described fatty alcohol-polyoxyethylene ether polymer reticulated structure.
3. composite nano cerium dioxide sol according to claim 2 is characterized in that: described nano ceric oxide size distribution is between 5-30nm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101216855A CN101386420B (en) | 2007-09-12 | 2007-09-12 | Composite nano cerium dioxide sol |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101216855A CN101386420B (en) | 2007-09-12 | 2007-09-12 | Composite nano cerium dioxide sol |
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| Publication Number | Publication Date |
|---|---|
| CN101386420A CN101386420A (en) | 2009-03-18 |
| CN101386420B true CN101386420B (en) | 2010-09-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007101216855A Expired - Fee Related CN101386420B (en) | 2007-09-12 | 2007-09-12 | Composite nano cerium dioxide sol |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5376304A (en) * | 1991-03-28 | 1994-12-27 | Taki Chemical Co., Ltd. | Ceric oxide sol |
| CN1361064A (en) * | 2000-12-25 | 2002-07-31 | 日产化学工业株式会社 | Cerium oxide sol and abrasive |
| CN1371867A (en) * | 2001-02-27 | 2002-10-02 | 日产化学工业株式会社 | Crytalline ceric oxide sol and making method thereof |
| CN1785815A (en) * | 2005-08-28 | 2006-06-14 | 内蒙古科技大学 | Preparation method of high specific surface area nano-cerium oxide |
-
2007
- 2007-09-12 CN CN2007101216855A patent/CN101386420B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5376304A (en) * | 1991-03-28 | 1994-12-27 | Taki Chemical Co., Ltd. | Ceric oxide sol |
| CN1361064A (en) * | 2000-12-25 | 2002-07-31 | 日产化学工业株式会社 | Cerium oxide sol and abrasive |
| CN1371867A (en) * | 2001-02-27 | 2002-10-02 | 日产化学工业株式会社 | Crytalline ceric oxide sol and making method thereof |
| CN1785815A (en) * | 2005-08-28 | 2006-06-14 | 内蒙古科技大学 | Preparation method of high specific surface area nano-cerium oxide |
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| CN101386420A (en) | 2009-03-18 |
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