CN102580709A - Amorphous anatase nano titanium dioxide material and preparation method thereof - Google Patents
Amorphous anatase nano titanium dioxide material and preparation method thereof Download PDFInfo
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- CN102580709A CN102580709A CN2012100108286A CN201210010828A CN102580709A CN 102580709 A CN102580709 A CN 102580709A CN 2012100108286 A CN2012100108286 A CN 2012100108286A CN 201210010828 A CN201210010828 A CN 201210010828A CN 102580709 A CN102580709 A CN 102580709A
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Abstract
The invention discloses an amorphous anatase nano titanium dioxide material and a preparation method thereof. The preparation method comprises the following steps of: firstly, placing amorphous titanium-copper alloys into a sealed container with a corrosive liquid, wherein the corrosive liquid is a nitric acid aqueous solution with mass percent being 50-68%; sulfates are added to the corrosive liquid to provide sulfate radicals; and the concentration of the sulfate radicals is 1-20mmol/L; and secondly, insulating the sealed container at 50-90 DEG C. The material and the preparation method have the following advantages that the amorphous titanium-copper alloys are used as the raw materials, thus the material and the preparation method belong to the scope of the liquid phase method; the thicker anatase nano porous titanium dioxide material can be grown; the method is simple to operate and can be used for preparing the nano titanium dioxide film with better crystallinity, without high temperature calcination; and the material has good photocatalysis.
Description
Technical field
The present invention relates to a kind of material and preparation method thereof, more particularly, relate to a kind of free etch synthetic nano material and method thereof utilized.
Background technology
Titanium dioxide is as a kind of semiconductor of broad stopband, and its oxidation-reduction potential is high, and light-catalyzed reaction is active strong, good stability, and fast light corrosion, and nontoxic with low cost, have the position that can not be substituted in photocatalysis field at present, be the most frequently used photochemical catalyst.With regard to crystal structure, titanium dioxide has three kinds of common crystal formations, is respectively anatase, rutile and brockite.The base unit that they form structure is TiO
6Octahedron, anatase structured by TiO
6Octahedra through being total to the limit composition, rutile and brockite structure are then by TiO
6Octahedron is total to the summit and is total to the limit to be formed.Because structure is different, with respect to other two kinds of crystal formations, the big (E of the titanium dioxide energy gap of Detitanium-ore-type
g=3.2eV), the redox ability in light induced electron hole is stronger, is more suitable for doing photochemical catalyst.The titanium dioxide of nanostructured has the distinctive skin effect of nano particle, bulk effect, quantum size effect and macro quanta tunnel effect, and oxidability is stronger under illumination, and photocatalytic activity is higher.The preparation method of nano titanium oxide generally is divided into vapor phase method and liquid phase method, and vapor phase method mainly comprises condensation of gas method, sputtering method, vacuum vapor deposition method, mixing plasma method etc.Liquid phase method mainly comprises technologies of preparing such as Hydrolyze method, the precipitation method, sol-gel process, hydro-thermal method, microemulsion method.Because the liquid phase method energy consumption is little, equipment is simple, cost is low, is that widely used preparation method is gone up with industry in the laboratory, thereby has caused extensive interest and concern.
Summary of the invention
The objective of the invention is to overcome the deficiency of prior art; With the amorphous state titanium-cuprum copper alloy is raw material; A kind of nano porous titanium dioxide material that can grow thicker Detitanium-ore-type and preparation method thereof is provided; This method is simple to operate, does not need high-temperature calcination can prepare crystallinity nano-titanium dioxide film preferably.This method belongs to the category of liquid phase method, and finished-product material has good photocatalysis performance.
The object of the invention is achieved through following technical scheme.
(be that step 1) places the corrosive liquid airtight container with the amorphous CTB alloy at first; Said corrosive liquid is that mass percent is 50～68% aqueous solution of nitric acid; Wherein add sulfate so that sulfate radical to be provided; The concentration of said sulfate radical is 1～20mmol/L, and the gross area of said amorphous CTB alloy and the volume ratio of corrosive liquid remain on 200～600cm
2/ L.
Then (being step 2) under 50～90 ℃, temperature retention time is to get final product in 50～300 hours with airtight container.
In the said step (1), HNO
3The mass fraction of solution is preferably 55%-65%, is more preferably 65%.
In the said step (1), sulfate can make any water miscible sulfate, like sodium sulphate, and potassium sulfate, copper sulphate.
In the said step (1), the concentration of sulfate is preferably 5-15mmol/L, is more preferably 7-10mmol/L.
In the said step (1), the atomic molar of Ti and Cu is than being (2～5) in the titanium copper non-crystaline amorphous metal of use: (8～5), the atomic molar ratio of preferred Ti and Cu is 4: 6.
In the said step (1), the amorphous CTB alloy is made into ribbon, and its gross area is meant the product (ignoring beam thickness) of band length and width, and the volume ratio of itself and corrosive liquid is preferably 300-450cm
2/ L is more preferably 300-400cm
2/ L.
Holding temperature in the said step (2) is preferably 60-80 ℃, is more preferably 65-70 ℃, and temperature retention time is preferably 100-250 hour, is more preferably 120-150 hour.
Technical scheme of the present invention is easy and simple to handle, compares with the traditional preparation process method, mainly contains following advantage: (1) is raw material with the amorphous state titanium-cuprum copper alloy first; Original position synthesis of titanium dioxide film is (shown in accompanying drawing 1; SEM S4800, Hitachi, Japan); (2) do not need high-temperature calcination can prepare crystallinity nano-titanium dioxide film (shown in accompanying drawing 2, RIGAKU/DMAX2500, the XRD analysis of Japan) preferably; (3) the nano porous titanium dioxide film that grows is thicker than conventional method; Be more conducive to the absorption of reactant in the light-catalyzed reaction; The material of the present invention's preparation is used photocatalyst; Through experimental verification, organic dyestuff rhodamine B 10mmol/L shuirongye can use a small amount of this material 0.1g catalytic degradation under the irradiation of 500W xenon lamp, and degradation rate can reach 50% after one hour.Because this material belongs to thin-film material, can overcome the not re-usable shortcoming of fine catalyst.
Description of drawings
The anatase-type nanometer titanium dioxide pattern photo of Fig. 1 preparation (SEM S4800, Hitachi, Japan).
The XRD spectra of the anatase-type nanometer titanium dioxide of Fig. 2 preparation (XRD tester RIGAKU/DMAX2500, Japan).
The specific embodiment
Further specify technical scheme of the present invention below in conjunction with specific embodiment.Select for use amorphous CTB alloy band to prepare, its gross area is the product of band length and width, ignores beam thickness.
Embodiment 1
(1) with amorphous CTB alloy Ti
40Cu
60(the atomic molar ratio of titanium and copper is 4: 6) places the corrosive liquid airtight container; Said corrosive liquid is that mass percent is 65% aqueous solution of nitric acid; Wherein add sodium sulphate so that sulfate radical to be provided; Concentration is 20mmol/L, and the gross area of said amorphous CTB alloy and the volume ratio of corrosive liquid remain on 400cm
2/ L
(2) container was placed in 70 ℃ the water-bath insulation 150 hours
Embodiment 2
(1) with amorphous CTB alloy Ti
20Cu
80(the atomic molar ratio of titanium and copper is 2: 8) places the corrosive liquid airtight container; Said corrosive liquid is that mass percent is 50% aqueous solution of nitric acid; Wherein add potassium sulfate so that sulfate radical to be provided; Concentration is 7mmol/L, and the gross area of said amorphous CTB alloy and the volume ratio of corrosive liquid remain on 600cm
2/ L
(2) container was placed in 80 ℃ the water-bath insulation 120 hours
Embodiment 3
(1) with amorphous CTB alloy Ti
20Cu
80(the atomic molar ratio of titanium and copper is 2: 8) places the corrosive liquid airtight container; Said corrosive liquid is that mass percent is 68% aqueous solution of nitric acid; Wherein add copper sulphate so that sulfate radical to be provided; Concentration is 1mmol/L, and the gross area of said amorphous CTB alloy and the volume ratio of corrosive liquid remain on 200cm
2/ L
(2) container was placed in 90 ℃ the water-bath insulation 50 hours
Embodiment 4
(1) with amorphous CTB alloy Ti
30Cu
70(the atomic molar ratio of titanium and copper is 3: 7) places the corrosive liquid airtight container; Said corrosive liquid is that mass percent is 55% aqueous solution of nitric acid; Wherein add sodium sulphate so that sulfate radical to be provided; Concentration is 15mmol/L, and the gross area of said amorphous CTB alloy and the volume ratio of corrosive liquid remain on 450cm
2/ L
(2) container was placed in 65 ℃ the water-bath insulation 100 hours
Embodiment 5
(1) with amorphous CTB alloy Ti
30Cu
70(the atomic molar ratio of titanium and copper is 3: 7) places the corrosive liquid airtight container; Said corrosive liquid is that mass percent is 60% aqueous solution of nitric acid; Wherein add potassium sulfate so that sulfate radical to be provided; Concentration is 10mmol/L, and the gross area of said amorphous CTB alloy and the volume ratio of corrosive liquid remain on 300cm
2/ L
(2) container was placed in 60 ℃ the water-bath insulation 300 hours
Embodiment 6
(1) with amorphous CTB alloy Ti
20Cu
80(the atomic molar ratio of titanium and copper is 2: 8) places the corrosive liquid airtight container; Said corrosive liquid is that mass percent is 60% aqueous solution of nitric acid; Wherein add sodium sulphate so that sulfate radical to be provided; Concentration is 5mmol/L, and the gross area of said amorphous CTB alloy and the volume ratio of corrosive liquid remain on 450cm
2/ L
(2) container was placed in 50 ℃ the water-bath insulation 250 hours
Embodiment 7
(1) with amorphous CTB alloy Ti
40Cu
60(the atomic molar ratio of titanium and copper is 4: 6) places the corrosive liquid airtight container; Said corrosive liquid is that mass percent is 68% aqueous solution of nitric acid; Wherein add copper sulphate so that sulfate radical to be provided; Concentration is 10mmol/L, and the gross area of said amorphous CTB alloy and the volume ratio of corrosive liquid remain on 600cm
2/ L
(2) container was placed in 55 ℃ the water-bath insulation 50 hours
Embodiment 8
(1) with amorphous CTB alloy Ti
50Cu
50(the atomic molar ratio of titanium and copper is 5: 5) places the corrosive liquid airtight container; Said corrosive liquid is that mass percent is 55% aqueous solution of nitric acid; Wherein add copper sulphate so that sulfate radical to be provided; Concentration is 7mmol/L, and the gross area of said amorphous CTB alloy and the volume ratio of corrosive liquid remain on 200cm
2/ L
(2) container was placed in 70 ℃ the water-bath insulation 150 hours
More than the present invention has been done exemplary description; Should be noted that; Under the situation that does not break away from core of the present invention, the replacement that is equal to that any simple distortion, modification or other those skilled in the art can not spend creative work all falls into protection scope of the present invention.
Claims (10)
1. an amorphous nano takes off titanium type titanic oxide material, is raw material with the amorphous state titanium-cuprum copper alloy, it is characterized in that, prepares according to following step:
Step 1 places the corrosive liquid airtight container with the amorphous CTB alloy; Said corrosive liquid is that mass percent is 50～68% aqueous solution of nitric acid; Wherein add sulfate so that sulfate radical to be provided; The concentration of said sulfate radical is 1～20mmol/L, and the gross area of said amorphous CTB alloy and the volume ratio of corrosive liquid remain on 200～600cm
2/ L
Under 50～90 ℃, temperature retention time is to get final product in 50～300 hours to step 2 with airtight container.
2. a kind of amorphous nano according to claim 1 takes off titanium type titanic oxide material, it is characterized in that, and in the said step (1), HNO
3The mass fraction of solution is preferably 55%-65%, is more preferably 65%.
3. a kind of amorphous nano according to claim 1 takes off titanium type titanic oxide material, it is characterized in that, in the said step (1), sulfate can make any water miscible sulfate, like sodium sulphate, and potassium sulfate, copper sulphate; In the said step (1), the concentration of sulfate is preferably 5-15mmol/L, is more preferably 7-10mmol/L.
4. a kind of amorphous nano according to claim 1 takes off titanium type titanic oxide material; It is characterized in that; In the said step (1), the atomic molar of Ti and Cu is than being (2～5) in the titanium copper non-crystaline amorphous metal of use: (8～5), and the atomic molar ratio of preferred Ti and Cu is 4: 6; In the said step (1), the amorphous CTB alloy is made into ribbon, and its gross area is meant the product (ignoring beam thickness) of band length and width, and the volume ratio of itself and corrosive liquid is preferably 300-450cm
2/ L is more preferably 300-400cm
2/ L.
5. a kind of amorphous nano according to claim 1 takes off titanium type titanic oxide material; It is characterized in that the holding temperature in the said step (2) is preferably 60-80 ℃, be more preferably 65-70 ℃; Temperature retention time is preferably 100-250 hour, is more preferably 120-150 hour.
6. the preparation method that amorphous nano takes off titanium type titanic oxide material is characterized in that, prepares according to following step:
Step 1 places the corrosive liquid airtight container with the amorphous CTB alloy; Said corrosive liquid is that mass percent is 50～68% aqueous solution of nitric acid; Wherein add sulfate so that sulfate radical to be provided; The concentration of said sulfate radical is 1～20mmol/L, and the gross area of said amorphous CTB alloy and the volume ratio of corrosive liquid remain on 200～600cm
2/ L
Under 50～90 ℃, temperature retention time is to get final product in 50～300 hours to step 2 with airtight container.
7. a kind of amorphous nano according to claim 6 takes off the preparation method of titanium type titanic oxide material, it is characterized in that, in the said step (1), and HNO
3The mass fraction of solution is preferably 55%-65%, is more preferably 65%.
8. a kind of amorphous nano according to claim 6 takes off the preparation method of titanium type titanic oxide material, it is characterized in that, in the said step (1), sulfate can make any water miscible sulfate, like sodium sulphate, and potassium sulfate, copper sulphate; In the said step (1), the concentration of sulfate is preferably 5-15mmol/L, is more preferably 7-10mmol/L.
9. a kind of amorphous nano according to claim 6 takes off the preparation method of titanium type titanic oxide material; It is characterized in that; In the said step (1), the atomic molar of Ti and Cu is than being (2～5) in the titanium copper non-crystaline amorphous metal of use: (8～5), and the atomic molar ratio of preferred Ti and Cu is 4: 6; In the said step (1), the amorphous CTB alloy is made into ribbon, and its gross area is meant the product (ignoring beam thickness) of band length and width, and the volume ratio of itself and corrosive liquid is preferably 300-450cm
2/ L is more preferably 300-400cm
2/ L.
10. a kind of amorphous nano according to claim 6 takes off the preparation method of titanium type titanic oxide material; It is characterized in that the holding temperature in the said step (2) is preferably 60-80 ℃, be more preferably 65-70 ℃; Temperature retention time is preferably 100-250 hour, is more preferably 120-150 hour.
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Cited By (7)
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|---|---|---|---|---|
| CN102928492A (en) * | 2012-11-14 | 2013-02-13 | 天津精仪博硕科技发展有限公司 | Analytical system for precise preparation and in-situ test of titanium dioxide nanotube array |
| CN104084203A (en) * | 2014-07-14 | 2014-10-08 | 东南大学 | Preparation method of Cu-Ti and TiO2 composite film material |
| CN104525170A (en) * | 2015-01-16 | 2015-04-22 | 天津大学 | Preparation method of titanium-dioxide powder with exposure of high-crystalline surface energy and spindle structure |
| CN106423119A (en) * | 2016-12-12 | 2017-02-22 | 中海油天津化工研究设计院有限公司 | Preparation method of titanium dioxide photocatalyst |
| CN108686662A (en) * | 2018-05-28 | 2018-10-23 | 国网山东省电力公司电力科学研究院 | Nano TiO 2-amorphous zirconium-base alloy composite photocatalyst material and preparation method thereof and purposes |
| CN109529872A (en) * | 2018-12-19 | 2019-03-29 | 河北麦森钛白粉有限公司 | Amorphous nano titanium dioxide visible light catalyzer compound and preparation method thereof |
| CN115073070A (en) * | 2022-05-31 | 2022-09-20 | 河海大学 | Preparation method and application of antibacterial mortar coating |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102928492A (en) * | 2012-11-14 | 2013-02-13 | 天津精仪博硕科技发展有限公司 | Analytical system for precise preparation and in-situ test of titanium dioxide nanotube array |
| CN104084203A (en) * | 2014-07-14 | 2014-10-08 | 东南大学 | Preparation method of Cu-Ti and TiO2 composite film material |
| CN104525170A (en) * | 2015-01-16 | 2015-04-22 | 天津大学 | Preparation method of titanium-dioxide powder with exposure of high-crystalline surface energy and spindle structure |
| CN106423119A (en) * | 2016-12-12 | 2017-02-22 | 中海油天津化工研究设计院有限公司 | Preparation method of titanium dioxide photocatalyst |
| CN108686662A (en) * | 2018-05-28 | 2018-10-23 | 国网山东省电力公司电力科学研究院 | Nano TiO 2-amorphous zirconium-base alloy composite photocatalyst material and preparation method thereof and purposes |
| CN109529872A (en) * | 2018-12-19 | 2019-03-29 | 河北麦森钛白粉有限公司 | Amorphous nano titanium dioxide visible light catalyzer compound and preparation method thereof |
| CN109529872B (en) * | 2018-12-19 | 2021-08-03 | 河北麦森钛白粉有限公司 | Amorphous nano titanium dioxide visible light catalyst compound and preparation method thereof |
| CN115073070A (en) * | 2022-05-31 | 2022-09-20 | 河海大学 | Preparation method and application of antibacterial mortar coating |
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Application publication date: 20120718 |