CN101468812A - Preparation of titanium dioxide nano-rod - Google Patents
Preparation of titanium dioxide nano-rod Download PDFInfo
- Publication number
- CN101468812A CN101468812A CNA2007101610584A CN200710161058A CN101468812A CN 101468812 A CN101468812 A CN 101468812A CN A2007101610584 A CNA2007101610584 A CN A2007101610584A CN 200710161058 A CN200710161058 A CN 200710161058A CN 101468812 A CN101468812 A CN 101468812A
- Authority
- CN
- China
- Prior art keywords
- titanium dioxide
- organic solvent
- alkali metal
- metal hydroxide
- preparation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Abstract
The invention provides a preparation method for titanium dioxide nanorods. The method comprises the following steps: heating a mixture containing titanium dioxide nano particles, an alkali metal hydroxide and an organic solvent to between 80 and 120 DEG C, and contacting the mixture with a surfactant, wherein the step of contacting the mixture with the surfactant is carried no more than 5 minutes later that the step of heating a mixture containing titanium dioxide nano particles, an alkali metal hydroxide and an organic solvent to between 80 and 120 DEG C, the organic solvent is an organic agent which has a boiling point below 85 DEG C and can dissolve the alkali metal hydroxide and the heating mode is heating by microwaves. The preparation method can quickly prepare at normal pressure titanium dioxide nanorods which are uniform in length and small in diameter.
Description
Technical field
The invention relates to a kind of preparation method of titanium dioxide nano-rod.
Background technology
Since 1991 found carbon nanotube, low-dimension nano material such as wire, band shape, bar-shaped and tubular nanometer material etc. were because peculiar property of itself and the potential application in nano-device and people's attention extremely.Low-dimension nano material has wide practical use in fields such as optics, electronics and medical science.The strong oxidizing property of nano titanium oxide, chemical stability and nontoxicity make nano titanium oxide become the photocatalyst that the environmental purification aspect has development potentiality.
At present, the preparation method of titanium dioxide nano-rod mainly contains: template, the shortcoming of this method are to need to remove template with chemical method after preparation is finished.Sol-gel method, a kind of method that adopts electric field thermal treatment to prepare the highlight catalytic active nano titania powder is disclosed as CN 101045556, it is characterized in that, in the subsequent heat treatment technology for preparing nano titanium dioxide powder in sol-gel method, the titanium dioxide xerogel is applied the external electric field of varying strength, realize the titanium dioxide forming core, the control of phase transformation, step is as follows: (1) is according to the titanic acid ester of weight percent with 10%-30%, the alcoholic solvent of 40%-60%, the 10%-30% stablizer, the tensio-active agent of 0.5%-1% is poured in the reacting appliance and is stirred, at room temperature the ammoniacal liquor of 2%-5% is poured in the solution of reacting appliance then and stirred 1-6 hour, make required colloidal sol; (2) colloidal sol was obtained xerogel at 80-100 ℃ of dry 12-24 hour; (3) xerogel of gained is put into the electric field thermal treatment unit and always carried out electric field thermal treatment, thermal treatment temp is 180-380 ℃, strength of electric field be 200-500 volt/centimetre, the electric field heat treatment time is 0.5-2 hour; (4) naturally cool to room temperature, promptly make the nano titanium dioxide powder of required highlight catalytic active.Sol-gel method is to use more a kind of preparation of nanomaterials now, but the titanium dioxide that this technology directly obtains mostly is unformed phase.
Also has a kind of reaction mechanism of using for reference the sol-gel method template, the preparation titanium dioxide nano thread, a kind of preparation method who prepares the oiliness titanium dioxide nano thread is disclosed as CN 1986907A, it is characterized in that: in organic acid, add titanic acid ester, heating for dissolving adds the titanium salt halogen compound then, and heating also feeds rare gas element, be heated to 200-220 ℃ and reacted 1.5-2.5 hour down, be warming up to 250-290 ℃ of stirring reaction 40-60 hour; Reaction finishes the back and add precipitation agent in reaction solution, has the khaki color precipitation to separate out, and ageing is filtered, washing, and gained khaki color powder is the oiliness titanium dioxide nano thread.This method needs high temperature of reaction, and long reaction time.
Also have a kind of hydrothermal synthesis method to prepare titanium dioxide nano material, as disclosing a kind of preparation method of one-dimensional single crystal titanium dioxide nano material among the CN 1699636A, it is characterized in that titanium tetrachloride or titanium dioxide are dispersed in amine, alcohol, nitrile or the phenol organic solvent, mix with aqueous sodium hydroxide solution then, reaction is 2-72 hour in 50-300 ℃ of following autoclave.The weak point of this method is the reaction needed high pressure, long reaction time, and the 1-dimention nano titanic oxide material length heterogeneity that makes, and the nanotube diameter that makes is the 20-50 nanometer, length is several microns and arrives the hundreds of micron.
Summary of the invention
The objective of the invention is in order to overcome the titanium dioxide nano material length heterogeneity of hydrothermal synthesis method preparation in the prior art, and the defective that needs condition of high voltage and long reaction time, provide a kind of under normal pressure, the reaction times is the method for the short uniform titanium dioxide nano-rod of preparation.
The invention provides a kind of preparation method of titanium dioxide nano-rod, wherein, this method comprises and will contain titania nanoparticles, the mixture heating up of alkali metal hydroxide and organic solvent contacts with tensio-active agent after 80-120 ℃, the described titania nanoparticles that contains, the time of origin and the described titania nanoparticles that contains of the mixture heating up to 80 of alkali metal hydroxide and organic solvent ℃, the mixture of alkali metal hydroxide and organic solvent is no more than 5 minutes with the timed interval that tensio-active agent begins to contact, described organic solvent is that boiling point is not higher than 85 ℃ and can dissolve the organic solvent of described alkali metal hydroxide, and the mode of described heating is microwave heating.
In the present invention, adopt microwave radiation titanium dioxide, can promote nucleation process, help generating the uniform titanium dioxide nano-rod of purity height and form.Use the lower organic solvent of boiling point to replace the aqueous solution, make and under non-pressurized state, react and to finish as reaction medium.In reaction process, add energy and Ti
4+With chelate bond form bonded organic compound, described energy and Ti
4+Form the organic compound and the Ti of chelate bond
4+Behind the chelating, form hydrophobic layer, help in the crystal growing process crystal with the combination of face face, and radially summit and Bian Bian combination are adopted in growth, hydrophobic layer suppresses the growth of crystal radial direction in order, helps generating the rhabdolith of minor diameter.Make the preparation of titanium dioxide nano-rod and modify one the step finish, simplified preparation process.
The titanium dioxide nano-rod L/D ratio value height of the present invention's preparation, the diameter of titanium dioxide nano-rod is the 5-10 nanometer, and length is the 150-200 nanometer, has than bigger serface, and the titanium dioxide nano-rod form is even, direction of growth homogeneous.The titanium dioxide nano-rod of the present invention's preparation is very strong in the ultraviolet region light absorptive, and at visible region stronger light absorptive is arranged also, has higher photocatalytic activity.Therefore under daylight, can be used as photocatalyst catalyzed oxidation organism, make more convenient operation.The present invention adds energy and Ti
4+The organic compound that forms chelate bond can be modified titanium dioxide nano-rod, makes the titanium dioxide nano-rod surface of preparing have lipophilicity, can be directly used in the organism medium.
Description of drawings
Fig. 1 is the transmission electron microscope photo of the titanium dioxide nano-rod of the present invention's preparation;
Fig. 2 is the transmission electron microscope photo of the single titanium dioxide nano-rod of the present invention's preparation;
Fig. 3 is the X-ray powder diffraction of the titanium dioxide nano-rod of the present invention's preparation;
Fig. 4 is the ultraviolet-visible photoabsorption collection of illustrative plates of the titanium dioxide nano-rod of the present invention's preparation.
Embodiment
The preparation method of titanium dioxide nano-rod provided by the invention, wherein, this method comprises and will contain titania nanoparticles, the mixture heating up of alkali metal hydroxide and organic solvent contacts with tensio-active agent after 80-120 ℃, the described titania nanoparticles that contains, the time of origin and the described titania nanoparticles that contains of the mixture heating up to 80 of alkali metal hydroxide and organic solvent ℃, the mixture of alkali metal hydroxide and organic solvent is no more than 5 minutes with the timed interval that tensio-active agent begins to contact, described organic solvent is that boiling point is not higher than 85 ℃ and can dissolve the organic solvent of described alkali metal hydroxide, and the mode of described heating is microwave heating.
In strong alkali solution, titanium dioxide nano-crystal dissociates, comes off along its crystal face, forms the nanometer wafer.When temperature was about 80 ℃, the nanometer wafer began assembling under the effect of crystal face molecular force.In order to make the nanometer wafer be assembled into nanometer rod, must as far as possible when solution temperature reaches 80 ℃, tensio-active agent be added equably.In the present invention, the temperature of mixture that control contains titania nanoparticles, alkali metal hydroxide and organic solvent rises to 80 ℃ time of origin and is no more than 5 minutes with the described mixture that contains titania nanoparticles, alkali metal hydroxide and organic solvent with the timed interval that tensio-active agent begins to contact, and is preferably 0-2 minute.
In order to obtain the less titanium dioxide nano-rod of higher preparation efficiency and diameter, be benchmark with the total amount of described mixture, the content of described titania nanoparticles can be 8-20 weight %, is preferably 8-10 weight %; The concentration of described alkali metal hydroxide can be the 8-12 mol, is preferably the 10-12 mol; The weight ratio of described tensio-active agent and titanium dioxide granule is 1-3, is preferably 1-2.
According to method provided by the invention, described organic solvent can not be higher than 85 ℃ and can dissolve the organic solvent of described alkaline matter for various boiling points, and the boiling point of preferred described organic solvent is 60-85 ℃.Described " can dissolve " is meant that solubleness is not less than 5 grams.The various organic solvents that satisfy above-mentioned condition all can be used for the present invention.Under the preferable case, described organic solvent is one or more in dehydrated alcohol, tetracol phenixin and the cyclohexane.
According to method provided by the invention, described titania nanoparticles can be the conventional various titania nanoparticles that use in this area.Described titania nanoparticles median size can be the 10-40 nanometer.The crystal formation of described titania nanoparticles can be various crystal formations, is preferably anatase titanium dioxide.
According to method provided by the invention; the described preparation process of mixture that contains titania nanoparticles, alkali metal hydroxide and solvent preferably includes elder generation with alkali metal hydroxide and solvent, treats to mix with titania nanoparticles after alkali metal hydroxide dissolves fully again.Described titania nanoparticles mixes with basic solution and is meant titania nanoparticles is dispersed in the alkali hydroxide soln.Can titania nanoparticles be uniformly dispersed, as adopting the ultrasonic echography vibration.
The microwave wavelength that adopts among the present invention is conventional microwave wavelength, as the 100-200 millimeter, is preferably the 110-150 millimeter.Described contact temperature can be 80-120 ℃, and can be 40-80 minute duration of contact.
In the present invention, described tensio-active agent can be any tensio-active agent of routine, is preferably energy and Ti
4+Form the organic compound of chelate bond.Energy and Ti
4+The organic compound of formation chelate bond can be selected from one or more in oleic acid, polyoxyethylene glycol, cetyl trimethylammonium bromide and the sodium laurylsulfonate, is preferably oleic acid.Described organic compound and Ti
4After forming chelate bond, form hydrophobic layer, this helps, and crystal adopts summit and Bian Bian combination with the combination of face face and radially grow in the crystal growing process, and hydrophobic layer suppresses the growth of crystal radial direction in order, helps generating the rhabdolith of minor diameter.Energy and Ti
4+The organic compound of formation chelate bond can also be realized the modification to nano titanium oxide, makes the nano titanium oxide surface have lipophilicity.
Among the present invention, described alkali metal hydroxide can be in sodium hydroxide, potassium hydroxide and the lithium hydroxide one or more.
According to method provided by the invention, under the preferable case, this method also comprise reaction finish after with reaction solution ageing, filtration, washing after drying.Described aged method comprises reaction solution was left standstill under 20-30 ℃ 1-2 hour.Described washing comprises filtration gained solid is washed with water, the consumption of washing lotion and the number of times of washing is not particularly limited, as long as the washing lotion that is washed till after the washing is neutral.Described drying can be at 40-60 ℃ of following constant pressure and dry 2-6 hour.
Embodiment 1
Present embodiment is used to illustrate the preparation method of titanium dioxide nano-rod of the present invention.
To 50 ml concns is that the sodium hydroxide ethanolic soln of 10 mol adds the anatase titanium dioxide nano particle that 5 gram particle diameters are 30 nanometers, with the ultrasonic apparatus supersound process titania nanoparticles is uniformly dispersed.Whole system is put into microwave reactor, and regulating microwave wavelength is 123 millimeters, when making solution temperature rise to 90 ℃, under quick stirring condition, at the uniform velocity drips 3 milliliters of oleic acid, dropwises in 3 minutes.Wherein, solution temperature rises to about 0.5 minute of about 90 ℃ of needs from 80 ℃.Dropwise the back and continue reaction 60 minutes at 90 ℃.After reaction finishes reaction solution left standstill under 20 ℃ 2 hours, filter, be washed with water to solution and be neutral, 45 ℃ dry 3 hours down, promptly get target product after the drying.
Embodiment 2
Present embodiment is used to illustrate the preparation method of titanium dioxide nano-rod of the present invention.
Method according to embodiment 1 is carried out, and different is, the sodium hydroxide ethanolic soln of 10 mol replaces with the potassium hydroxide carbon tetrachloride solution of 8 mol, and the consumption of potassium hydroxide carbon tetrachloride solution is 60 milliliters; The titania nanoparticles particle dia is 10 nanometers, and its consumption is 5 grams; Microwave wavelength is 100 millimeters, and temperature of reaction is 80 ℃, and the reaction times is 80 minutes.Oleic acid replaces with cetyl trimethylammonium bromide, and its consumption is 5 milliliters.
Embodiment 3
Present embodiment is used to illustrate the preparation method of titanium dioxide nano-rod of the present invention.
Method according to embodiment 1 is carried out, and different is, the sodium hydroxide ethanolic soln of 10 mol replaces with 9 mol lithium hydroxide cyclohexane solutions, and the consumption of lithium hydroxide cyclohexane solution is 50 milliliters; The titania nanoparticles particle dia is 40 nanometers, and its consumption is 3 grams; Microwave wavelength is 150 millimeters, and temperature of reaction is 100 ℃ (temperature of reaction rises to about 1 minute of about 100 ℃ of needs from 80 ℃), and the reaction times is 60 minutes.Oleic acid replaces with polyoxyethylene glycol, and its consumption is 5 milliliters.
Embodiment 4
Present embodiment is used to illustrate the preparation method of titanium dioxide nano-rod of the present invention.
Method according to embodiment 1 is carried out, and different is, the concentration of sodium hydroxide ethanolic soln is 12 mol, and its consumption is 40 milliliters; The titania nanoparticles particle diameter is 20 nanometers, and its consumption is 5 grams; Microwave wavelength is 200 millimeters, and temperature of reaction is 120 ℃ (temperature of reaction rises to about 2 minutes of about 120 ℃ of costs from 80 ℃), and the reaction times is 40 minutes.Oleic acid replaces with sodium laurylsulfonate, and its consumption is 5 milliliters.
Present embodiment is used to detect the structure and the character of the titanium dioxide nano-rod of the embodiment of the invention 1 preparation.
Detect the form of the titanium dioxide nano-rod of the embodiment of the invention 1 preparation with transmission electron microscope (Dutch Philips, CM200 FEG), as shown in Figure 1, the length of the titanium dioxide nano-rod of the embodiment of the invention 1 preparation is about 200 nanometers, and diameter is 5 nanometers.
Detect the form of the titanium dioxide nano-rod of the embodiment of the invention 1 preparation with transmission electron microscope (Dutch Philips, CM200 FEG), as shown in Figure 2, the titanium dioxide nano-rod growth of the embodiment of the invention 1 preparation has the crystal orientation specificity.
Detect the internal structure of the titanium dioxide nano-rod of the embodiment of the invention 1 preparation with x-ray instrument (Dutch Philips, X ' Pert Pro), as shown in Figure 3, the crystal formation of the titanium dioxide nano-rod of the embodiment of the invention 1 preparation is a Detitanium-ore-type.
Detect the light absorption of the titanium dioxide nano-rod of the embodiment of the invention 1 preparation with Lambda UV-VIS UV, visible light spectrophotometer, as shown in Figure 4, the titanium dioxide nano-rod of the embodiment of the invention 1 preparation has strong absorbent at ultraviolet region, and also stronger in the absorptivity of visible region.
Embodiment 6-9
These embodiment are used to detect the dispersiveness of the titanium dioxide nano-rod of embodiment 1-4 preparation.
1, the dispersiveness in tetracol phenixin: the titanium dioxide nano-rod of getting 1 gram embodiment 1-4 preparation, put into 50 milliliters of tetracol phenixin respectively, ultrasonic under the same conditions vibrations are dispersed in the tetracol phenixin titanium dioxide nano-rod, leave standstill then, place a week.Detect by an unaided eye, each suspension does not have layering not become muddy yet, still is dispersed in the tetracol phenixin, and with the corresponding suspension indistinction of firm preparation, therefore, the titanium dioxide nano-rod of embodiment 1-4 preparation has dispersed preferably in tetracol phenixin.
2, the dispersiveness in cyclohexane: get the titanium dioxide nano-rod of 1 gram embodiment 1-4 preparation, put into 50 milliliters of cyclohexanes respectively, ultrasonic under the same conditions vibrations are dispersed in the hexanaphthene titanium dioxide nano-rod, leave standstill then, place a week.Detect by an unaided eye, each suspension does not have layering not become muddy yet, still is dispersed in the cyclohexane, and with the corresponding suspension indistinction of firm preparation, therefore, the titanium dioxide nano-rod of embodiment 1-4 preparation has dispersed preferably in hexanaphthene.
Embodiment 10-13
These embodiment are used to detect the photocatalytic activity of the titanium dioxide nano-rod of embodiment 1-4 preparation.
1, the photocatalytic activity under visible light: be the titanium dioxide nano-rod that adds 2 gram embodiment 1-4 preparations in the phenol solution of 100 mg/litre to 100 ml concns respectively.A 100 ml concns be 100 mg/litre phenol solutions in contrast.Under magnetic agitation, light intensity is that 150 watts fluorescent lamp shone 40 minutes.The centrifugation reaction solution is collected supernatant liquor.Adopting Lambda UV-VIS spectrophotometer is the absorbancy that detects control group phenol solution and each supernatant liquor under 510 nanometers at wavelength.
Recording the result is: the light absorption value of control group is 2.50; The light absorption value of the solution of handling with the titanium dioxide nano-rod of embodiment 1-4 preparation is respectively 0.80,0.85,0.11 and 0.93.Illustrate thus that under radiation of visible light the titanium dioxide nano-rod that adopts method provided by the invention to make has advantages of high catalytic activity.
2, the photocatalytic activity under UV-light: be the titanium dioxide nano-rod that adds 4 gram embodiment 1-4 preparations in the 100 mg/litre phenol solutions to 100 ml concns respectively.A 100 ml concns are that 100 mg/litre phenol solutions compare, and under magnetic agitation, light intensity is that 15 watts ultraviolet lamp (wavelength is 312 nanometers) shone 40 minutes.The centrifugation reaction solution is collected supernatant liquor.Adopting the LambdaUV-VIS spectrophotometer is the absorbancy that detects contrast phenol solution and each supernatant liquor under 510 nanometers at wavelength.
Recording the result is: the light absorption value of control group is 2.50; The light absorption value of the solution of handling with the titanium dioxide nano-rod of embodiment 1-4 preparation is respectively 0.50,0.62,0.80 and 0.71.Under UV-irradiation, the titanium dioxide nano-rod that adopts method provided by the invention to make has advantages of high catalytic activity.
By above-mentioned experiment as can be seen, the titanium dioxide nano-rod that adopts method provided by the invention to make is placed in tetracol phenixin and hexanaphthene after a week still can homodisperse, and therefore the titanium dioxide nano-rod that adopts method provided by the invention to make has good dispersiveness in organic medium; In addition, under radiation of visible light, the titanium dioxide nano-rod catalysis of phenol that adopts method provided by the invention to make reacted after 40 minutes, and the light absorption value of phenol solution drops to 0.80 from 2.50; Under UV-irradiation, the titanium dioxide nano-rod catalysis of phenol that adopts method provided by the invention to make reacted after 40 minutes, and the light absorption value of phenol solution drops to 0.50 from 2.50; Therefore under visible light and UV-irradiation, the titanium dioxide nano-rod that adopts method provided by the invention to make all has advantages of high catalytic activity.
Claims (10)
1, a kind of preparation method of titanium dioxide nano-rod, it is characterized in that, this method comprises and will contain titania nanoparticles, the mixture heating up of alkali metal hydroxide and organic solvent contacts with tensio-active agent after 80-120 ℃, the described titania nanoparticles that contains, the time of origin and the described titania nanoparticles that contains of the mixture heating up to 80 of alkali metal hydroxide and organic solvent ℃, the mixture of alkali metal hydroxide and organic solvent is no more than 5 minutes with the timed interval that tensio-active agent begins to contact, described organic solvent is that boiling point is not higher than 85 ℃ and can dissolve the organic solvent of described alkali metal hydroxide, and the mode of described heating is microwave heating.
2, method according to claim 1, wherein, total amount with described mixture is a benchmark, the content of described titania nanoparticles is 8-20 weight %, the concentration of described alkali metal hydroxide in mixture is the 8-12 mol, and the weight ratio of described tensio-active agent and titanium dioxide granule is 1-2.
3, method according to claim 1, wherein, the time of origin of the described mixture heating up to 80 that contains titania nanoparticles, alkali metal hydroxide and organic solvent ℃ is 0-2 minute with the described mixture that contains titania nanoparticles, alkali metal hydroxide and organic solvent with the timed interval that tensio-active agent begins to contact.
4, according to any described method among the claim 1-3, wherein, described organic solvent is selected from one or more in dehydrated alcohol, tetracol phenixin and the cyclohexane.
5, according to any described method among the claim 1-3, wherein, the average particle diameter of described titania nanoparticles is the 10-40 nanometer, and crystal formation is an anatase titanium dioxide.
6, method according to claim 1, wherein, the wavelength of described microwave is the 100-200 millimeter.
7, method according to claim 1, wherein, the temperature of described contact is 80-120 ℃, the time of contact is 40-80 minute.
8, according to any described method among the claim 1-3, wherein, described tensio-active agent is energy and Ti
4+Form the organic compound of chelate bond.
9, method according to claim 8, wherein, described energy and Ti
4+The organic compound of formation chelate bond is selected from one or more in oleic acid, polyoxyethylene glycol, cetyl trimethylammonium bromide, the sodium laurylsulfonate.
10, according to any described method among the claim 1-3, wherein, described alkali metal hydroxide is one or more in sodium hydroxide, potassium hydroxide and the lithium hydroxide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101610584A CN101468812B (en) | 2007-12-24 | 2007-12-24 | Preparation of titanium dioxide nano-rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101610584A CN101468812B (en) | 2007-12-24 | 2007-12-24 | Preparation of titanium dioxide nano-rod |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101468812A true CN101468812A (en) | 2009-07-01 |
| CN101468812B CN101468812B (en) | 2011-05-18 |
Family
ID=40826666
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007101610584A Active CN101468812B (en) | 2007-12-24 | 2007-12-24 | Preparation of titanium dioxide nano-rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101468812B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103395831A (en) * | 2013-07-09 | 2013-11-20 | 哈尔滨工程大学 | Hydrothermal preparation method of shape-controllable titanium dioxide nano tube |
| CN109985636A (en) * | 2019-03-22 | 2019-07-09 | 吕梁学院 | Preparation method based on walnut shell biomass carbon visible light catalyst |
| CN110721747A (en) * | 2019-10-18 | 2020-01-24 | 张贵勇 | Metal organic framework photocatalytic hydrogen production composite material and preparation method thereof |
| CN112169727A (en) * | 2020-10-21 | 2021-01-05 | 哈尔滨理工大学 | Preparation method of halloysite-based micro-nano reactor for advanced catalytic oxidation |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1200881C (en) * | 2002-08-19 | 2005-05-11 | 西安华创纳米化合物技术研究发展有限责任公司 | Preparation method of titanium oxide nano fibre |
-
2007
- 2007-12-24 CN CN2007101610584A patent/CN101468812B/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103395831A (en) * | 2013-07-09 | 2013-11-20 | 哈尔滨工程大学 | Hydrothermal preparation method of shape-controllable titanium dioxide nano tube |
| CN109985636A (en) * | 2019-03-22 | 2019-07-09 | 吕梁学院 | Preparation method based on walnut shell biomass carbon visible light catalyst |
| CN109985636B (en) * | 2019-03-22 | 2022-04-12 | 吕梁学院 | Preparation method of walnut shell biomass carbon-based visible light catalyst |
| CN110721747A (en) * | 2019-10-18 | 2020-01-24 | 张贵勇 | Metal organic framework photocatalytic hydrogen production composite material and preparation method thereof |
| CN112169727A (en) * | 2020-10-21 | 2021-01-05 | 哈尔滨理工大学 | Preparation method of halloysite-based micro-nano reactor for advanced catalytic oxidation |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101468812B (en) | 2011-05-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Li et al. | Carbon dot-silica nanoparticle composites for ultralong lifetime phosphorescence imaging in tissue and cells at room temperature | |
| JP5809210B2 (en) | Metal oxide composite having hollow core and porous shell layer and method for producing the same | |
| CN102350334B (en) | Graphene/mesoporous titanium dioxide visible light catalyst and preparation method | |
| Zhang et al. | Facile hydrothermal synthesis and photocatalytic activity of rod-like nanosized silver tungstate | |
| Cheng et al. | Anatase nanocrystals coating on silica-coated magnetite: role of polyacrylic acid treatment and its photocatalytic properties | |
| CN106732741B (en) | The visible light catalyst of dyestuff and its preparation and application in a kind of degrading waste water | |
| CN105800686B (en) | One kind prepares Bi5O7I method | |
| CN102127431A (en) | Manufacturing method of carbon quantum dots and method for preparing photocatalyst by using same | |
| WO2008014690A1 (en) | A nano-wire of titania, a method for preparing the same, the use of the same, and a method for degradation of organic contaminants | |
| Shahini et al. | Immobilization of plasmonic Ag-Au NPs on the TiO2 nanofibers as an efficient visible-light photocatalyst | |
| CN104772136B (en) | A kind of pucherite and preparation method and application | |
| CN101468812B (en) | Preparation of titanium dioxide nano-rod | |
| Ferreira et al. | Influence of solution pH on forming silver molybdates obtained by sonochemical method and its application for methylene blue degradation | |
| He et al. | In-situ growth of lepidocrocite on Bi2O3 rod: a perfect cycle coupling photocatalysis and heterogeneous fenton-like process by potential-level matching with advanced oxidation | |
| Li et al. | Ag-induced anatase-rutile TiO2− x heterojunction facilitating the photogenerated carrier separation in visible-light irradiation | |
| Mandal et al. | Sustainable design of hierarchically porous Ag3PO4 microspheres through a novel natural template and their superior photooxidative capacity | |
| CN101830502B (en) | Monodisperse titanium dioxide nanometer microballoons and preparation method thereof | |
| Gao et al. | A novel bi-functional SiO2@ TiO2/CDs nanocomposite with yolk-shell structure as both efficient SERS substrate and photocatalyst | |
| CN100591620C (en) | Preparation of high photocatalysis activity titanium dioxide nano-stick by non-hydrosol-gel method and surface functionalization | |
| Tang et al. | Facile ultrasonic synthesis of novel zinc sulfide/carbon nanotube coaxial nanocables for enhanced photodegradation of methyl orange | |
| CN101857267B (en) | Preparation method of titanium dioxide nano material with core-shell structure | |
| CN106000460B (en) | Carbon quantum dot is sensitized the amine-modified TiO of dendritic polyethyleneimine2Photochemical catalyst | |
| Vakili Tajareh et al. | Synthesis of TiO2/Fe3O4/MWCNT magnetic and reusable nanocomposite with high photocatalytic performance in the removal of colored combinations from water | |
| CN102806078B (en) | Method for preparing one-dimensional hollow superstructure photocatalytic material of Bi system composite oxide | |
| CN102274719A (en) | Visible-light-responsive nano composite powder photocatalyst and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20201118 Address after: 225700 plant area (Economic Development Zone), 2nd floor, No.2 factory building, Xinghua science and technology entrepreneurship center, Taizhou City, Jiangsu Province Patentee after: Jiangsu JieChuang Enterprise Management Co., Ltd Address before: 518119 BYD Industrial Park, Yanan Road, Kwai Chung Town, Longgang District, Guangdong, Shenzhen Patentee before: BYD Co.,Ltd. |
|
| TR01 | Transfer of patent right |