CN105174948A - Preparation method of niobate solid solution material - Google Patents
Preparation method of niobate solid solution material Download PDFInfo
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- CN105174948A CN105174948A CN201410254923.XA CN201410254923A CN105174948A CN 105174948 A CN105174948 A CN 105174948A CN 201410254923 A CN201410254923 A CN 201410254923A CN 105174948 A CN105174948 A CN 105174948A
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- niobate
- solid solution
- oxide
- high temperature
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Abstract
The invention provides a preparation method of a niobate solid solution material. The niobate solid solution material is prepared by a method of mixing grinding and then high temperature sintering. Sodium carbonate (Na2CO3), niobium oxide (Nb2O5), bismuth oxide (Bi2O3), chromic oxide (Cr2O3), ferric oxide (Fe2O3) and lanthanum oxide (La2O3) are mixed and ground according to a certain molar ratio, and then subjected to high temperature sintering at the temperature of 950-1150 DEG C to obtain the (NaNbO3) solid solution. The method is simple in preparation, the product quality is good, and the method is prone to realization of industrialized production.
Description
Technical field
The invention belongs to field of material preparation, in particular, provide a kind of preparation method of niobate solid-solution material.
Background technology
Since 20th century, the mankind at enjoy that the science and technology that develops rapidly brings comfortable and easily while, have to taste the consequence of the environmental degradation thereupon brought.In various environmental pollution, the most generally, main and what have the greatest impact is chemical pollution.Thus; effectively controlling and administering various chemical pollutant to the destruction forming the most basic water resources, soil and the atmospheric environment of human survival is emphasis in comprehensive environmental improvement, and exploitation can be the key of environment protection practical technique innoxious for various chemical pollutant.Photocatalysis technology is exactly in this context from the emerging green technology that 20 century 70s progressively grow up.It utilize semiconductor oxide materials under light illumination surface energy by the characteristic of activating signal activation, utilize luminous energy can oxygenolysis organism, reducing heavy metal ion, kill bacteria and elimination peculiar smell effectively.Because photocatalysis technology can utilize sun power at room temperature to react, both economical; Photocatalyst TiO
2self is nontoxic, harmless, non-corrosiveness, can Reusability; Organic pollutant permineralization can be become H
2o and mineral ion, non-secondary pollution, so the tempting glamour having traditional high temperature, Conventional catalytic technology and adsorption technology incomparable, is a kind of green environment Treatment process with broad prospect of application.
Sosoloid is topmost using-system in engineering metal material.The sosoloid used in general alloy has following Some features: owing to dissolving in alloying elements, and the intensity of alloy and hardness are always higher than the intensity of pure metal, hardness, and this is also a method of reinforced metal, is called solution strengthening.Usually, during minute quantity alloying, Strength Changes is relatively remarkable, then increases solutes content intensity and increase not bery remarkable, but when displacement solute, when content about about 50%, strength ratio is higher.Usual ferrous materials is no more than tens MPas by the strength level that solution strengthening improves.The intensity of sosoloid, hardness and other performance are obviously the functions of component and content.Usually, the element of gap solid solution causes strengthening more much bigger than the strengthening that causes of element of displacement solid solution in the alloy.This is because atom during the solid solution of gap squeezes completely in the dot matrix space of solvent atom, causes significant strain in sosoloid.
Summary of the invention
The invention provides a kind of preparation method of niobate sosoloid.
The present invention is accomplished by following technical solution:
(1) sodium carbonate (Na
2cO
3), niobium oxides (Nb
2o
5), bismuth oxide (Bi
2o
3), chromic oxide (Cr
2o
3), ferric oxide (Fe
2o
3) and lanthanum trioxide (La
2o
3) according to certain molar ratio mixed grinding, at 950-1150 DEG C of high temperature sintering.
(2) calcination time 5 ~ 12h, can prepare niobate sosoloid.
Niobate sosoloid of the present invention adopts the method synthesis of mixed grinding, high temperature sintering.Method of the present invention makes comparatively simple, and cleanliness without any pollution, good quality of product, is easy to realize industrialization.
Accompanying drawing explanation
Fig. 1 is the electron scanning micrograph of invention compound.
Embodiment
Embodiment one: 2.0133gNa
2cO
3, 5.0499gNb
2o
5, 0.4659gBi
2o
3and 0.1519gCr
2o
3mixed grinding, then sinters 10h in the High Temperature Furnaces Heating Apparatus of 950 DEG C.Finally make sample Temperature fall, obtain niobate sosoloid (NaNbO
3)
0.95(BiCrO
3)
0.05.
Embodiment two: 1.8358gNa
2cO
3, 4.6048gNb
2o
5, 0.0570gLa
2o
3 Hes0.0266gCr
2o
3mixed grinding, then sinters 5h in the High Temperature Furnaces Heating Apparatus of 1150 DEG C.Finally make sample Temperature fall, obtain niobate sosoloid (NaNbO
3)
0.99(LaCrO
3)
0.01.
Embodiment three: 1.7705gNa
2cO
3, 4.4231gNb
2o
5, 0.2851gLa
2o
3and 0.1328gCr
2o
3mixed grinding, then sinters 5h in the High Temperature Furnaces Heating Apparatus of 1150 DEG C.Finally make sample Temperature fall, obtain niobate sosoloid (NaNbO
3)
0.95(LaCrO
3)
0.05.
Embodiment four: 4.0143gNa
2cO
3, 9.8682gNb
2o
5, 0.1222gLa
2o
3and 0.0599gFe
2o
3mixed grinding, then sinters 12h in the High Temperature Furnaces Heating Apparatus of 1100 DEG C.Finally make sample Temperature fall, obtain niobate sosoloid (NaNbO
3)
0.99(LaFeO
3)
0.01.
Claims (2)
1. the preparation method of a niobate sosoloid.The preparation method of niobate sosoloid, is characterized in that preparation comprises the following steps: sodium carbonate (Na
2cO
3), niobium oxides (Nb
2o
5), bismuth oxide (Bi
2o
3), chromic oxide (Cr
2o
3), ferric oxide (Fe
2o
3) and lanthanum trioxide (La
2o
3) according to certain molar ratio mixed grinding, high temperature sintering.
2. the method for claim 1, is characterized in that.950-1150 DEG C of high temperature sintering.Calcination time 5 ~ 12h, can prepare niobate sosoloid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410254923.XA CN105174948A (en) | 2014-06-04 | 2014-06-04 | Preparation method of niobate solid solution material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410254923.XA CN105174948A (en) | 2014-06-04 | 2014-06-04 | Preparation method of niobate solid solution material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105174948A true CN105174948A (en) | 2015-12-23 |
Family
ID=54897481
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410254923.XA Pending CN105174948A (en) | 2014-06-04 | 2014-06-04 | Preparation method of niobate solid solution material |
Country Status (1)
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|---|---|
| CN (1) | CN105174948A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107961785A (en) * | 2017-12-07 | 2018-04-27 | 清华大学 | A kind of preparation method and applications of high activity bismuth chromate nano-photocatalyst |
Citations (4)
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|---|---|---|---|---|
| WO2011111800A1 (en) * | 2010-03-12 | 2011-09-15 | 株式会社オハラ | Photocatalyst, slurry mixture, forming member and coating, coating film forming member, sintered body, glass-ceramic composite, glass, building material and clarification material |
| CN103381361A (en) * | 2013-07-26 | 2013-11-06 | 河南大学 | Flocculent nanoscale sodium niobate compound photocatalytic material and application thereof in environment purification and hydrogen preparation |
| CN103464172A (en) * | 2013-09-16 | 2013-12-25 | 天津理工大学 | Compound photocatalyst for reducing carbon dioxide into organic ester and preparation method of compound photocatalyst |
| CN103706361A (en) * | 2012-09-29 | 2014-04-09 | 江南大学 | Preparation and applications of alkali metal niobate photocatalytic material |
-
2014
- 2014-06-04 CN CN201410254923.XA patent/CN105174948A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011111800A1 (en) * | 2010-03-12 | 2011-09-15 | 株式会社オハラ | Photocatalyst, slurry mixture, forming member and coating, coating film forming member, sintered body, glass-ceramic composite, glass, building material and clarification material |
| CN103706361A (en) * | 2012-09-29 | 2014-04-09 | 江南大学 | Preparation and applications of alkali metal niobate photocatalytic material |
| CN103381361A (en) * | 2013-07-26 | 2013-11-06 | 河南大学 | Flocculent nanoscale sodium niobate compound photocatalytic material and application thereof in environment purification and hydrogen preparation |
| CN103464172A (en) * | 2013-09-16 | 2013-12-25 | 天津理工大学 | Compound photocatalyst for reducing carbon dioxide into organic ester and preparation method of compound photocatalyst |
Non-Patent Citations (3)
| Title |
|---|
| YU-JEN HSIAO ET AL.: "Microstructural, Raman and dielectric properties of (1-x)NaNbO3–xBiCrO3 biphase ceramics", 《JOURNAL OF ALLOYS AND COMPOUNDS》 * |
| 姜晓军等: "可见光响应型(Na1-xLax)(Ta1-xFex)O3 固溶体的合成及其光催化性能研究", 《南京大学学报(自然科学)》 * |
| 孙明明等: "复合铌酸盐的合成和光催化活性的研究", 《安徽理工大学学报(自然科学版)》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107961785A (en) * | 2017-12-07 | 2018-04-27 | 清华大学 | A kind of preparation method and applications of high activity bismuth chromate nano-photocatalyst |
| CN107961785B (en) * | 2017-12-07 | 2020-08-14 | 清华大学 | Preparation method and application of high-activity bismuth chromate nano photocatalyst |
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Application publication date: 20151223 |
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