CN109292815A - A kind of TiO2The in-situ preparation method of nanometer sheet cluster film - Google Patents
A kind of TiO2The in-situ preparation method of nanometer sheet cluster film Download PDFInfo
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- CN109292815A CN109292815A CN201811027091.2A CN201811027091A CN109292815A CN 109292815 A CN109292815 A CN 109292815A CN 201811027091 A CN201811027091 A CN 201811027091A CN 109292815 A CN109292815 A CN 109292815A
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G23/00—Compounds of titanium
- C01G23/04—Oxides; Hydroxides
- C01G23/047—Titanium dioxide
- C01G23/053—Producing by wet processes, e.g. hydrolysing titanium salts
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/01—Particle morphology depicted by an image
- C01P2004/03—Particle morphology depicted by an image obtained by SEM
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/20—Particle morphology extending in two dimensions, e.g. plate-like
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/40—Electric properties
Abstract
A kind of TiO disclosed by the invention2The in-situ preparation method of nanometer sheet cluster film, high pure metal Ti foil is used to perform etching 20h~40h with mass concentration for 20%~25% HCl solution under 25 DEG C~50 DEG C water-baths first, porous Ti foil is obtained, the porous Ti foil of cleaning is then placed in the Na that concentration is 0.1mol/L~5mol/L2Hydro-thermal reaction is carried out in S solution, sodium titanate nanometer sheet cluster film is obtained, the sodium titanate nanometer sheet of drying is exchanged through peracid intermediate ion then, obtains metatitanic acid nanometer sheet cluster film, finally metatitanic acid nanometer sheet cluster film is annealed, forms TiO after complete decomposition reaction2Nanometer sheet cluster film.In-situ preparation method of the invention solves the problems, such as that the nano powder of existing preparation method preparation is easy to reunite and one-dimensional nano line is relatively large in diameter.
Description
Technical field
The invention belongs to the preparation technical fields of inorganic nano material, and in particular to a kind of TiO2Nanometer sheet cluster film
In-situ preparation method.
Background technique
TiO2It is a kind of highly stable important inorganic functional material of chemical property, in solar battery, photocatalysis, light
Before Xie Shui, sensor, food packaging, coating, function ceramics, high-grade paint and magnetic recording material etc. have wide application
Scape.Ultra-thin two-dimension nanometer sheet TiO2Since its unique appearance structure, biggish surface volume are than the synusia thickness with atom level
And with significant screen effect and emit the ability of light, thus exhibit improvements in the fields such as pigment or coating other
The performance of shape.
Up to the present, it has been reported that a variety of preparation TiO2The method of nanostructure, including Chemical assembly method, electrostatic
Spin processes, chemical vapour deposition technique, electrochemistry anodic oxidation, sol-gel method and alkaline solution hydro-thermal method.Wherein colloidal sol-
Gel method and alkaline solution hydro-thermal method are most mature preparation methods, and sol-gel method generally makees raw material using Ti alkoxide, warp
The processes such as hydrolysis and gel, then nano-TiO is obtained through low temperature drying, sintering processes2Particle or flakelike powder, such as Chinese patent
Number be CN200510111204. 3, publication date 2006.06.21, patent name be a kind of " rutile-phase nano-titanium dioxide
Preparation method " patent and document (Yin Juan etc., TiO2The research of flakelike powder preparation, Chinese powder technology, 2005,6:
9-12), the most common Ti alkoxide volatility of this method is extremely strong, once encountering air fast hydrolyzing, so operating difficulties, and
The nano powder of preparation is easy reunion or body phase size, it is difficult to reach the good result of theory expectation.The preparation of aqueous slkali hydro-thermal method
TiO2Nano material is that Ti presoma (titanium foil or titanyl powder) is added in NaOH aqueous solution, obtains titanium by hydro-thermal reaction
Then sour sodium nano material places it in and carries out ion exchange in acid, titanic acid nano material is obtained, finally by metatitanic acid nanometer material
Material is changed into TiO by hydro-thermal or roasting2Nano material, for example, Que etc. uses Ti foil, it is 1mol/L's in concentration
220 DEG C of hydro-thermal reactions in NaOH solution, obtain sodium titanate nano-wire array, then exchange through peracid intermediate ion and roasting technique
It is changed into TiO2Nano-wire array [L.Que, Z.Lan, W.Wu, et al. Journal of Power Sources, 2014,
266:440-447]；Wang et al. reports that hydro-thermal reaction obtains titanium in 180 DEG C of 10mol/L NaOH solution using Ti foil
Then sour sodium nano-wire array is changed into TiO through the exchange of peracid intermediate ion and roasting technique2Nano-wire array [W.Wang,
H.Lin, J.Li, et al., J.Am.Ceram.Soc., 2008,91:628-631]；Ti foil prepares TiO2Nano material is not required to
Template and catalyst are wanted, it is simple and easy to do, it is at low cost, but the TiO of this method preparation2It is all the bigger 1-dimention nano of diameter
Linear array, in addition, two-dimentional TiO is prepared in situ about hydro-thermal method2The preparation of nanometer sheet film is not yet reported that.
Summary of the invention
The object of the present invention is to provide a kind of TiO2The in-situ preparation method of nanometer sheet cluster film solves existing preparation
The TiO of method preparation2The problem of nano powder is easy to reunite and one-dimensional nano line is relatively large in diameter.
A technical solution of the present invention is a kind of TiO2The in-situ preparation method of nanometer sheet cluster film, specifically
Implement in accordance with the following steps:
Step 1 prepares porous Ti foil；
Step 2, preparation sodium titanate nanometer sheet cluster film；
Step 3, preparation TiO2Nanometer sheet cluster film.
The features of the present invention also characterized in that:
Detailed process is as follows for step 1:
Ti foil after cleaning is placed in HCl solution and carries out reactive ion etching, the Ti foil after then taking out etching, and successively
It cleaned, dried, obtain porous Ti foil.
In step 1, the mass concentration of HCl solution is 20%~25%.
In step 1, etching temperature is 25 DEG C~50 DEG C, and etch period is 20h~40h.
In step 1, it is etched after Ti foil cleaned repeatedly with deionized water, until cleaning solution pH value be 7, then exist
Dry 10h~15h, obtains porous Ti foil under 60 DEG C~80 DEG C vacuum environments.
Detailed process is as follows for step 2:
Na is sequentially added into hydrothermal reaction kettle2It is sealed after the porous Ti foil that S reaction solution and step 1 obtain, then by water
It is hydro-thermal reaction 12h in 180 DEG C~220 DEG C of convection oven~for 24 hours that thermal response kettle, which is placed in temperature, after then taking out reaction
Ti foil loaded article, and the Ti foil loaded article is successively cleaned and dried, obtain the sodium titanate nanometer sheet cluster of Ti foil load
Film.
In step 2, Na2The concentration of S reaction solution is 0.1mol/L~5mol/L.
Detailed process is as follows for step 3:
Step 3.1 sequentially adds HCl solution into the glass container that can be sealed and the titanium of Ti foil load that step 2 obtains
Sealed after sour sodium nanometer sheet cluster film, then by glass container merging temperature be reacted in 30 DEG C~50 DEG C of water-bath 5h~
10h；
Step 3.2 takes out the sodium titanate nanometer sheet cluster film of the Ti foil load after reaction, and negative to the Ti after reaction
The sodium titanate nanometer sheet cluster film of load is successively cleaned and is dried, and the metatitanic acid nanometer sheet cluster film of Ti foil load is obtained；
Step 3.3, the metatitanic acid nanometer sheet cluster film for loading Ti foil carry out air environment annealing, to metatitanic acid
Completely after thermal decomposition, TiO is obtained2Nanometer sheet cluster film.
In step 3.1, the mass concentration of HCl solution is 10%~20%, volume 100ml.
In step 3.3, the annealing temperature is 350 DEG C~500 DEG C, and annealing time is 3h~5h.
The invention has the advantages that
TiO of the invention2The in-situ preparation method of nanometer sheet cluster film has simple process, low in cost and repeated
Good advantage, the technology of most critical in entire technique: first is that HCl concentration used by etching metal Ti foil, etching temperature and when
Between, second is that Na in aqueous slkali hydro-thermal reaction2Concentration, reaction temperature and the time of S reaction solution, by simply adjusting reaction solution
Middle Na2The adjustable TiO of the concentration of S reaction solution2The size and gap structure of nanometer sheet；Using TiO prepared by the present invention2Nanometer
Piece cluster film, the load bracket that can be used in sensitization solar battery to electrode catalytic materials, it can also be used to flexible super electricity
The support frame and collector of electrode material in container.
Detailed description of the invention
Ti foil surface SEM schemes when Fig. 1 is etching 12h；
Fig. 2 is to etch Ti foil surface SEM when for 24 hours to scheme；
Ti foil surface SEM schemes when Fig. 3 is etching 36h；
Ti foil surface SEM schemes when Fig. 4 is etching 48h；
Fig. 5 is 0mol/L Na2The TiO of S reaction solution hydro-thermal preparation2The SEM of nanometer sheet cluster film schemes；
Fig. 6 is 0.1mol/L Na2The TiO of S reaction solution hydro-thermal preparation2The SEM of nanometer sheet cluster film schemes；
Fig. 7 is 0.5mol/L Na2The TiO of S reaction solution hydro-thermal preparation2The SEM of nanometer sheet cluster film schemes；
Fig. 8 is 1mol/L Na2The TiO of S reaction solution hydro-thermal preparation2The SEM of nanometer sheet cluster film schemes；
Fig. 9 is 2mol/L Na2The TiO of S reaction solution hydro-thermal preparation2The SEM of nanometer sheet cluster film schemes；
Figure 10 is 3mol/L Na2The TiO of S reaction solution hydro-thermal preparation2The SEM of nanometer sheet cluster film schemes；
Figure 11 is saturation Na2The TiO that in S solution prepared by hydro-thermal2SEM figure of the nanometer sheet cluster film under low power number；
Figure 12 is saturation Na2The TiO that in S solution prepared by hydro-thermal2SEM figure of the nanometer sheet cluster film under high magnification numbe.
Specific embodiment
The following describes the present invention in detail with reference to the accompanying drawings and specific embodiments.
For the two-dimentional TiO of sol-gel method preparation2Metal Ti alkoxide used by nano material is in air easily
Volatilization, operating difficulties, nano powder are easy the TiO to reunite and prepared by aqueous slkali (NaOH, KOH) hydro-thermal method2Nano material is
The bigger one-dimensional nano line of diameter, the present invention provide a kind of TiO2The in-situ preparation method of nanometer sheet cluster film, by simple
Adjusting Na2The adjustable TiO of the reaction solution concentration of S2The size and gap structure of nanometer sheet.
Specifically implement in accordance with the following steps:
Step 1 prepares porous Ti foil；
Firstly, by deionized water and anhydrous second is used with a thickness of 0.01mm~0.06mm, the Ti foil that purity is 99.99%
Alcohol is cleaned by ultrasonic 3-4 times and is placed in the HCl solution that mass concentration is 20%~25%, and anti-in 25 DEG C~50 DEG C hydro-thermals
20h~40h should be etched；Ti foil after then taking out etching is cleaned repeatedly with deionized water, until the pH of cleaning solution is close to 7, and
It is dried into 10h~15h in 60 DEG C~80 DEG C vacuum ovens, obtains porous Ti foil for future use.
Step 2, preparation sodium titanate nanometer sheet cluster film；
Na is prepared first2S reaction solution: Na is added in the deionized water of 40ml2S, stirring obtain dense up to being completely dissolved
Degree is the Na of 0.1mol/L~5mol/L2S reaction solution；
Na is sequentially added into the hydrothermal reaction kettle of the polytetrafluoroethyllining lining of 50ml2What S reaction solution and step 1 obtained
It is sealed after porous Ti foil, the hydrothermal reaction kettle is then placed in hydro-thermal reaction in the convection oven that temperature is 180 DEG C~220 DEG C
12h~for 24 hours, the Ti foil loaded article after then taking out reaction, and the Ti foil loaded article after reaction is cleaned with deionized water more
It is secondary, until the pH of cleaning solution is close to 7, and by it in 60 DEG C~80 DEG C vacuum ovens dry 10h~15h, obtain Ti load
Porous sodium titanate nanometer sheet cluster film.
Step 3, preparation TiO2Nanometer sheet cluster film；
Detailed process is as follows:
Step 3.1, sequentially added into the glass container that can be sealed 100ml mass concentration be 10%~20% HCl it is molten
It is sealed after the sodium titanate nanometer sheet cluster film for the Ti foil load that liquid and step 2 obtain, the glass container of sealing is then placed in temperature
Degree carries out the acid displacement reaction of sodium titanate to react 5h~10h in 30 DEG C~50 DEG C of water-bath；
Ti foil loaded article after reaction is taken out, and is cleaned repeatedly to the Ti foil loaded article with deionized water by step 3.2,
Until the pH of cleaning solution is close to 7, and by it in 60 DEG C~80 DEG C vacuum ovens dry 10h~15h, obtain the load of Ti foil
Metatitanic acid nanometer sheet cluster film；
The metatitanic acid nanometer sheet cluster film that Ti foil loads is placed in the Muffle furnace that temperature is 350 DEG C~500 DEG C by step 3.3
Middle progress air environment annealing 3h~5h obtains TiO after thermally decomposing completely to metatitanic acid2Nanometer sheet cluster film.
TiO of the invention2The in-situ preparation method of nanometer sheet cluster film has simple process, low in cost and repeated
Good advantage, the technology of most critical in entire technique: first is that HCl concentration used by etching metal Ti foil, etching temperature and when
Between, second is that Na in aqueous slkali hydro-thermal reaction2Concentration, reaction temperature and the time of S reaction solution, by simply adjusting reaction solution
Middle Na2The adjustable TiO of the concentration of S reaction solution2The size and gap structure of nanometer sheet；Using TiO prepared by the present invention2Nanometer
Piece cluster film, the load bracket that can be used in sensitization solar battery to electrode catalytic materials, it can also be used to flexible super electricity
The support frame and collector of electrode material in container.
Embodiment 1
Step 1, firstly, by with a thickness of 0.03mm, purity be 99.99% Ti foil use deionized water and dehydrated alcohol
It is cleaned by ultrasonic 4 times to be placed in the HCl solution that mass concentration is 25%, and the reactive ion etching 12h in 30 DEG C of hydro-thermals；Then it takes
Ti foil after etching out is cleaned repeatedly with deionized water, until the pH of cleaning solution is close to 7, and by it in 70 DEG C of vacuum ovens
Middle dry 10h obtains porous Ti foil for future use.
Step 2 prepares Na first2S reaction solution: Na is added in the deionized water of 40ml2S is stirred up to being completely dissolved,
Obtain the Na that concentration is 0.5mol/L2S reaction solution；
Na is sequentially added into the hydrothermal reaction kettle of the polytetrafluoroethyllining lining of 50ml2What S reaction solution and step 1 obtained
It is sealed after porous Ti foil, the hydrothermal reaction kettle is then placed in hydro-thermal reaction 12h in the convection oven that temperature is 180 DEG C, then
Ti foil loaded article after taking out reaction, and the Ti foil loaded article after reaction is cleaned with deionized water repeatedly, until cleaning solution
PH dries 10h close to 7, and by it in 60 DEG C of vacuum ovens, obtains the sodium titanate nanometer sheet cluster film of Ti foil load.
Step 3 sequentially adds HCl solution and step that 100ml mass concentration is 10% into the glass container that can be sealed
It is sealed after the sodium titanate nanometer sheet cluster film of 2 obtained Ti foil loads, is then 30 DEG C by the glass container merging temperature of sealing
Water-bath in react 5h, carry out the acid displacement reaction of sodium titanate, then take out the Ti foil loaded article after reaction, and to the Ti
Foil loaded article is cleaned repeatedly with deionized water, until the pH of cleaning solution is close to 7, and by its in 60 DEG C of vacuum ovens it is dry
10h obtains the metatitanic acid nanometer sheet cluster film of Ti foil load；The metatitanic acid nanometer sheet cluster film that Ti foil loads is placed in temperature
TiO is obtained after thermally decomposing completely to metatitanic acid to carry out air environment annealing 3h in 350 DEG C of Muffle furnaces2Nanometer
Piece cluster film.
In following example 2~11, specific implementation step is as described in Example 1, and partial parameters variation is shown in Table 1.
Part response parameter distribution situation in 1 embodiment 1~11 of table
FIG. 1 to FIG. 4 be Examples 1 to 4 in etch different time Ti foil surface topography map, from Fig. 1 it can be seen that
With the extension of etching time, the hole diameter on Ti foil surface significantly increases；As depicted in figs. 1 and 2, when etch period from
12h is extended to for 24 hours, and the depth of hole obviously increases, but as etch period further extends to 36h and 48h, hole
Depth is substantially reduced, and is primarily due to lower aperture wall for a long time and is constantly etched away, such as Fig. 3 and Fig. 4.
Fig. 5~Figure 10 is the Na of various concentration in embodiment 5~102The TiO of S reaction solution hydro-thermal preparation2Nanometer sheet cluster film
SEM figure, as can be seen from the figure: with Na2The increase of S concentration, TiO2Nanometer chip size increases, and the diameter of cluster is also gradually
Increase, and the gap between cluster is gradually reduced.
Figure 11 and Figure 12 is respectively to be saturated Na in embodiment 112The TiO that in S solution prepared by hydro-thermal2Nanometer sheet cluster film is low
SEM figure under multiple and high magnification numbe, from Figure 11, that is, low power number SEM figure it can be seen that the uniform cluster of large area, and cluster
Size is also highly uniform；From 12 i.e. high magnification numbe SEM figure it can be seen that each cluster is the two-dimensional nano by very thin thickness
Piece composition, nanometer sheet is to assemble vertically, and there are suitable gap structures between nanometer sheet.
Claims (10)
1. a kind of TiO2The in-situ preparation method of nanometer sheet cluster film, which is characterized in that specifically implement in accordance with the following steps:
Step 1 prepares porous Ti foil；
Step 2, preparation sodium titanate nanometer sheet cluster film；
Step 3, preparation TiO2Nanometer sheet cluster film.
2. a kind of TiO as described in claim 12The in-situ preparation method of nanometer sheet cluster film, which is characterized in that the tool of step 1
Body process is as follows:
Ti foil after cleaning is placed in HCl solution and carries out reactive ion etching, the Ti foil after then taking out etching, and successively carry out clear
It washes, dry, obtain porous Ti foil.
3. a kind of TiO as claimed in claim 22The in-situ preparation method of nanometer sheet cluster film, which is characterized in that in step 1,
The mass concentration of the HCl solution is 20%~25%.
4. a kind of TiO as claimed in claim 22The in-situ preparation method of nanometer sheet cluster film, which is characterized in that in step 1,
The etching temperature is 25 DEG C~50 DEG C, and etch period is 20h~40h.
5. a kind of TiO as claimed in claim 22The in-situ preparation method of nanometer sheet cluster film, which is characterized in that in step 1,
Ti foil after etched is cleaned repeatedly with deionized water, until the pH value of cleaning solution is 7, then in 60 DEG C~80 DEG C vacuum environments
Lower dry 10h~15h obtains porous Ti foil.
6. a kind of TiO as described in claim 12The in-situ preparation method of nanometer sheet cluster film, which is characterized in that the tool of step 2
Body process is as follows:
Na is sequentially added into hydrothermal reaction kettle2It is sealed after the porous Ti foil that S reaction solution and step 1 obtain, then by hydro-thermal reaction
It is hydro-thermal reaction 12h in 180 DEG C~220 DEG C of convection oven~for 24 hours, the Ti foil load after then taking out reaction that kettle, which is placed in temperature,
Object, and the Ti foil loaded article is successively cleaned and dried, obtain the sodium titanate nanometer sheet cluster film of Ti foil load.
7. a kind of TiO as claimed in claim 62The in-situ preparation method of nanometer sheet cluster film, which is characterized in that in step 2,
The Na2The concentration of S reaction solution is 0.1mol/L~5mol/L.
8. a kind of TiO as described in claim 12The in-situ preparation method of nanometer sheet cluster film, which is characterized in that the tool of step 3
Body process is as follows:
Step 3.1 sequentially adds HCl solution into the glass container that can be sealed and the sodium titanate of Ti foil load that step 2 obtains
It is sealed after nanometer sheet cluster film, reacts 5h~10h in the water-bath for being then 30 DEG C~50 DEG C by glass container merging temperature；
Step 3.2 takes out the sodium titanate nanometer sheet cluster film of the Ti foil load after reaction, and to the Ti foil load after reaction
Sodium titanate nanometer sheet cluster film is successively cleaned and is dried, and the metatitanic acid nanometer sheet cluster film of Ti foil load is obtained；
Step 3.3, the metatitanic acid nanometer sheet cluster film for loading Ti foil carry out air environment annealing, completely hot to metatitanic acid
After decomposition, TiO is obtained2Nanometer sheet cluster film.
9. a kind of TiO as claimed in claim 82The in-situ preparation method of nanometer sheet cluster film, which is characterized in that step 3.1
In, the mass concentration of the HCl solution is 10%~20%, volume 100ml.
10. a kind of TiO as claimed in claim 82The in-situ preparation method of nanometer sheet cluster film, which is characterized in that step 3.3
In, the annealing temperature is 350 DEG C~500 DEG C, and annealing time is 3h~5h.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113181914A (en) * | 2021-04-16 | 2021-07-30 | 天津工业大学 | Transition metal in-situ doped TiO2Catalyst, preparation method and application |
| CN116139167A (en) * | 2023-04-14 | 2023-05-23 | 四川大学 | Thorn-like TiO 2 Ir cluster-loaded enzyme-like material and preparation and application thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105883912A (en) * | 2016-05-15 | 2016-08-24 | 北京工业大学 | Method for preparing self-support titanium dioxide three-dimensional micro-nano structure |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105883912A (en) * | 2016-05-15 | 2016-08-24 | 北京工业大学 | Method for preparing self-support titanium dioxide three-dimensional micro-nano structure |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113181914A (en) * | 2021-04-16 | 2021-07-30 | 天津工业大学 | Transition metal in-situ doped TiO2Catalyst, preparation method and application |
| CN116139167A (en) * | 2023-04-14 | 2023-05-23 | 四川大学 | Thorn-like TiO 2 Ir cluster-loaded enzyme-like material and preparation and application thereof |
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