WO2010035965A2 - 이산화티타늄 졸 제조장치 및 제조방법 및 이를 이용한 페이스트 조성물 - Google Patents
이산화티타늄 졸 제조장치 및 제조방법 및 이를 이용한 페이스트 조성물 Download PDFInfo
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- WO2010035965A2 WO2010035965A2 PCT/KR2009/005044 KR2009005044W WO2010035965A2 WO 2010035965 A2 WO2010035965 A2 WO 2010035965A2 KR 2009005044 W KR2009005044 W KR 2009005044W WO 2010035965 A2 WO2010035965 A2 WO 2010035965A2
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- titanium dioxide
- organic solvent
- dioxide sol
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- solvent mixture
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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
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
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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
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
- C09C1/36—Compounds of titanium
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- 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
- C01P2004/04—Particle morphology depicted by an image obtained by TEM, STEM, STM or AFM
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- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/54—Particles characterised by their aspect ratio, i.e. the ratio of sizes in the longest to the shortest dimension
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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
- C01P2004/60—Particles characterised by their size
- C01P2004/64—Nanometer sized, i.e. from 1-100 nanometer
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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
- C01P2006/12—Surface area
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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
Definitions
- the present invention relates to an apparatus and a method for producing a titanium dioxide sol, and more particularly, to a screen printing paste, preferably a titanium dioxide sol used for a screen printing titanium dioxide (TiO 2 ) paste by using a solvent substitution method.
- the present invention relates to a titanium dioxide sol production apparatus and a method for producing the titanium sol.
- Screen printing pastes preferably screen printing titanium dioxide (TiO 2 ) pastes are coated on conductive glass or conductive films or conductive polymers and used as metal oxide electrodes of dye-sensitized solar cells.
- TiO 2 titanium dioxide
- a dye-sensitized solar cell is manufactured by injecting and sealing an iodine-based redox electrolyte between an electrode coated with a thin film of porous nano oxide particles adsorbed with ruthenium-based dye and a counter electrode coated with platinum or carbon as a catalyst.
- the photoelectric conversion efficiency of the dye-sensitized solar cell is determined by the product of the current density, voltage, and fill factor of the solar cell, the current, voltage, and fill factor values must be improved to increase the energy conversion efficiency.
- the surface state can be modified to minimize recombination to increase the current density, the conduction band energy of the nanoparticle oxide is increased to a negative value with respect to the standard hydrogen electrode potential, and the iodine electrolyte The oxidation-reduction potential of is increased to a positive value with respect to the standard hydrogen electrode potential.
- titanium dioxide powder or titanium dioxide such as alkoxide or titanium tetrachloride Titanium dioxide was synthesized by sol-gel method or hydrothermal synthesis of precursors, and it was prepared as a powder and treated with attrition milling apparatus in organic solvents such as ethyl alcohol in order to mix well in high viscosity organic solvents such as terpineol. To perform grinding and dispersion.
- the conventional method of manufacturing the titanium dioxide paste for screen printing uses an attrition milling device, which is complicated in the process and is not suitable for mass production.
- a commercially prepared aqueous titanium dioxide (TiO 2 ) sol or a titanium dioxide sol is substituted with an organic solvent by dispersing the titanium dioxide sol dispersed in water with an organic solvent using a separation means prior to the step of pulverizing the titanium dioxide.
- the present invention also provides a method for producing a screen printing titanium dioxide paste that can be used as a screen printing method suitable for mass production by preparing a sol in which titanium dioxide is dispersed in an organic solvent by solvent-substituting an aqueous titanium dioxide sol. There is a task to do.
- the present invention provides a storage means for storing an organic solvent mixture comprising an aqueous titanium dioxide sol and a dispersion stabilizer; Separation means connected to the storage means to separate the organic solvent mixture including titanium dioxide particles, water and a dispersion stabilizer; A circulating fluid moving path connected between the separating means and the storage means to move the titanium dioxide particles separated from the separating means to the storage means; And a discharging unit connected to one side of the separating means and configured to discharge an organic solvent mixture including water and a dispersion stabilizer separated from the separating means to provide a titanium dioxide sol manufacturing apparatus.
- the present invention comprises the steps of preparing an organic solvent mixture comprising (a) 1 to 30 parts by weight of a dispersion stabilizer and 70 to 99 parts by weight of an organic solvent; (b) preparing an organic solvent mixture comprising an aqueous titanium dioxide sol and a dispersion stabilizer by mixing the organic solvent mixture comprising the dispersion stabilizer of step (a) with an aqueous titanium dioxide sol in a volume ratio of 1: 1 to 1: 9. Doing; (c) separating the organic solvent mixture comprising the aqueous titanium dioxide sol and the dispersion stabilizer of step (b) into an organic solvent mixture comprising the titanium dioxide particles and the water and the dispersion stabilizer using a separation means to separate the water into an organic solvent.
- the present invention is to provide a method for producing a paste composition for screen printing, comprising homogenizing after mixing a dispersant, a binder, a surfactant or all of the titanium dioxide sol prepared according to the method for producing a titanium dioxide sol. There is a solution.
- Titanium dioxide sol dispersed in the organic solvent according to the present invention is excellent in long-term storage and it is possible to prepare a transparent paste electrode because the titanium dioxide sol itself is a nano-sized colloidal state without going through the conventional attrition milling process. .
- the present invention has the effect of providing a titanium dioxide paste composition for screen printing that can be used as a screen printing method suitable for mass production.
- FIG. 1 is a block diagram of a titanium dioxide sol manufacturing apparatus according to the present invention
- FIG 3 is an electron microscope (TEM) photograph according to an embodiment of the present invention.
- FIG. 6 is a graph showing the photocurrent density-photovoltage characteristics of the dye-sensitized solar cell according to the embodiment of the present invention.
- the present invention provides a storage device comprising an organic solvent mixture containing an aqueous titanium dioxide sol and a dispersion stabilizer; Separation means connected to the storage means to separate the organic solvent mixture including titanium dioxide particles, water and a dispersion stabilizer; A circulating fluid moving path connected between the separating means and the storage means to move the titanium dioxide particles separated from the separating means to the storage means; And it is installed on one side of the separating means provides a titanium dioxide sol manufacturing apparatus comprising a discharge unit for discharging the organic solvent mixture comprising a water and a dispersion stabilizer separated from the separating means.
- the present invention comprises the steps of (a) mixing the 1 to 30 parts by weight of a dispersion stabilizer and 70 to 99 parts by weight of an organic solvent to prepare an organic solvent mixture comprising a dispersion stabilizer; (b) preparing an organic solvent mixture comprising an aqueous titanium dioxide sol and a dispersion stabilizer by mixing the organic solvent mixture comprising the dispersion stabilizer of step (a) with an aqueous titanium dioxide sol in a volume ratio of 1: 1 to 1: 9.
- step (c) separating the organic solvent mixture comprising the aqueous titanium dioxide sol and the dispersion stabilizer of step (b) into an organic solvent mixture comprising the titanium dioxide particles and the water and the dispersion stabilizer using a separation means to separate the water into an organic solvent.
- a solvent substitution step (d) circulating and mixing the titanium dioxide particles separated by the solvent replacement step of step (c) with the mixture of step (b); (e) a method of preparing a titanium dioxide sol comprising sequentially repeating the prepared mixture of step (b) through steps (c) and (d) so that the purity of the organic solvent is 95% or more. to provide.
- the present invention provides a method for producing a paste for screen printing paste comprising homogenizing after mixing a dispersant, a binder, a surfactant or all of the titanium dioxide sol prepared according to the method for producing a titanium dioxide sol. do.
- the apparatus for preparing a titanium dioxide sol according to the present invention substitutes an organic solvent by replacing the titanium dioxide sol dispersed in water with an organic solvent using a separation means before the commercially prepared aqueous titanium dioxide sol or powdering titanium dioxide sol during the preparation of the titanium dioxide sol. It is for producing a titanium dioxide sol dispersed in any of the conventional titanium dioxide sol manufacturing apparatus used in this field corresponds to the titanium dioxide sol manufacturing apparatus of the present invention.
- the separating means is to separate the organic solvent containing titanium dioxide particles and water and a dispersion stabilizer to replace the water contained in the aqueous titanium dioxide sol with an organic solvent, and for this purpose is commonly used in the art.
- Any separation means to be used may be used, but preferably separation means including a separation membrane or a filtration membrane, and more preferably an ultrafiltration membrane.
- the organic solvent including the water and the dispersion stabilizer separated by the separating means may be referred to as permeate in the present invention.
- the aqueous titanium dioxide sol which is a target material for solvent replacement using the titanium dioxide sol production apparatus according to the present invention, is not particularly limited as long as the titanium dioxide particles are dispersed in water, but preferably the titanium dioxide concentration is total dioxide. It is preferable to have 20-30 weight part based on a titanium sol weight part, the size of a titanium dioxide particle may be 10-100 nm, and the specific surface area of a titanium dioxide particle may be 40-350 m ⁇ 2> / g.
- FIG. 1 is a schematic diagram of a titanium dioxide sol production apparatus according to the present invention.
- the apparatus for producing titanium dioxide sol according to the present invention comprises: storage means (2) in which an organic solvent mixture including an aqueous titanium dioxide sol and a dispersion stabilizer is stored; Separating means (4) connected to the storage means (2) to separate the organic solvent mixture including titanium dioxide particles, water and a dispersion stabilizer; A circulating fluid moving path 14 connected between the separating means 4 and the storing means 2 to move the titanium dioxide particles separated from the separating means 4 to the storing means 2; And a discharge part 12 connected to one side of the separating means 4 to discharge the organic solvent mixture including the water and the dispersion stabilizer separated from the separating means 4.
- the titanium dioxide sol manufacturing apparatus is connected to one side of the separating means 4, the washing tank (8) is filled with a washing liquid for washing the separating means (4); And a washing liquid moving path 16 connected between the separating means 4 and the storing means 2 to move the washing liquid washing the separating means 4 to the storing means 2.
- the titanium dioxide sol manufacturing apparatus is provided in the circulating fluid moving path 14 to pass through the separating means 4 and to control the temperature of the separated titanium dioxide particles or the washing liquid moving path 16 It may further include a heat exchange means (6) for adjusting the temperature of the washing liquid provided in the) washing the separation means (4).
- the titanium dioxide sol manufacturing apparatus according to the present invention may be further provided with an organic solvent injecting portion 10 into which an organic solvent including a dispersion stabilizer is introduced into one side of the storage means (2).
- the titanium dioxide sol manufacturing apparatus is connected to one side of the storage means (2) of the organic solvent mixture comprising an aqueous titanium dioxide sol and a dispersion stabilizer filled in the storage means (2) pH measuring unit 18 for adjusting the pH may be further provided.
- the aqueous titanium dioxide sol according to the present invention is not particularly limited as long as the titanium dioxide particles are dispersed in water.
- the titanium dioxide sol has 20 to 30 parts by weight based on the total weight of titanium dioxide sol, and the dioxide
- the size of the titanium particles is preferably 10 to 100 nm, and the specific surface area of the titanium dioxide particles is preferably 40 to 350 m 2 / g.
- the storage means (2) provides a place in which an organic solvent mixture containing an aqueous titanium dioxide sol and a dispersion stabilizer, which is a target material for replacing water with an organic solvent, is stored. (2) Anything may be used.
- one side of the storage means 2 is an aqueous titanium dioxide sol filled in the organic solvent injection portion 10 and / or the storage means 2 for providing the organic solvent containing a dispersion stabilizer to the storage means (2)
- a pH measuring unit 18 that can measure the pH of the organic solvent mixture including the dispersion stabilizer.
- the pH meta is good as it can be used as the pH measuring unit 18.
- the organic solvent comprising a dispersion stabilizer mixed with an aqueous titanium dioxide sol in the storage means (2) according to the present invention is to replace the titanium dioxide sol dispersed in the water with a solvent, for this purpose
- a solvent for this purpose
- it is an organic solvent normally used in the above Preferably it is good to use the mixture which mixes 1-30 weight part dispersion stabilizers and 70-99 weight part organic solvent on the basis of the total weight of the organic solvent.
- the addition amount of the dispersion stabilizer is not particularly limited, but the purity of the solvent may be reduced due to the additives that may be added when the titanium dioxide paste composition for screen printing is prepared using a titanium dioxide sol substituted with an organic solvent. It is recommended to use 15 parts by weight.
- the dispersion stabilizer is not particularly limited as long as it is a substance capable of providing dispersion stability to titanium dioxide sol, but it is preferable to use ⁇ -diketones.
- the ⁇ -diketone forms a chelate with the particle surface to reduce the surface tension between the particle and the solvent to prevent the separation of the particle and the solvent to prevent agglomeration, and when applied to the coating properties of the particles to bond well
- These are usually present as equilibrium mixtures of ketones and enols, and the equilibrium position depends on the nature of the solvent.
- these chelates form chelates with various metals.
- these chelates are stable and most readily soluble in organic solvents rather than water.
- acetylacetone and / or organic polymer polyvinyl alcohol can be used as such a dispersion stabilizer.
- the organic solvent used in combination with the dispersion stabilizer is not particularly limited as long as it is a hydrophilic organic solvent.
- alcohols such as ethanol, methanol, ethylene glycol, 1-propanol or more with a purity of 95% or more are preferably used, and more preferably.
- ethanol or methanol are preferably used, and more preferably.
- the organic solvent mixture containing the aqueous titanium dioxide sol and the dispersion stabilizer stored in the storage means 2 according to the present invention is the volume ratio of the aqueous titanium dioxide sol and dispersion stabilizer 1: 1 to 1: 9, preferably It is mixed at a volume ratio of 1: 1 to 1: 2, and in order to ensure that the purity of the organic solvent is 95% or more in the solvent replacement step, sequential repeating should be performed, and the condition of the ratio of the aqueous titanium dioxide sol and the organic solvent mixture is almost equal. Performing under one can make more effective solvent substituted sol.
- the separating means 4 is for separating the organic solvent mixture comprising titanium dioxide particles and water and a dispersion stabilizer from each other in order to replace the water contained in the aqueous titanium dioxide sol with an organic solvent.
- Any separation means 4 commonly used in the art may be used, but preferably, separation means including a separation membrane or a filtration membrane may be used, and an ultrafiltration membrane may be preferably used.
- the organic solvent mixture (permeate) passing through the separating means 4 according to the present invention in particular through the separating means 4 consisting of an ultrafiltration membrane and containing separated water and a dispersion stabilizer, It is discharged to the outside through the discharge portion 12 is connected to one side, the remaining titanium dioxide particles (solid content) is circulated to the storage tank (2).
- the organic solvent mixture including the aqueous titanium dioxide sol and the dispersion stabilizer stored in the storage tank 2 is reduced by 50% or more relative to the initial capacity of the storage tank 2 according to the above process, the dispersion stabilizer is included in a reduced amount.
- the organic solvent mixture is further filled in the storage tank (2).
- the separation means 4 according to the present invention when used for the continuous solvent replacement of the aqueous titanium dioxide sol, the pores of the separation means 4, particularly the separation means 4 such as ultrafiltration membranes, are contained in the titanium dioxide sol. Since it may be blocked by titanium dioxide particles, a periodic cleaning is required to solve this problem, one side of the separation means 4 according to the present invention is provided with a washing tank 8 filled with a washing liquid for washing the separation means 4. You can install more connections.
- the separating means 4, particularly the separating means 4 such as the ultrafiltration membrane are washed by the washing liquid of the washing tank 8, and the titanium dioxide particles washed by the washing liquid are separated by the separating means 4 And a washing liquid moving path 16 which provides a path through which the washing liquid can be transferred to the storing means 2 between the storing means 2 so that the titanium dioxide particles are transferred to the storing means 2 together with the washing liquid.
- the circulating fluid moving path 14 provides a path through which the titanium dioxide particles separated by the separating means 4 can be transported to the storage means 2 and circulated therein. It will not specifically limit, if it is used normally.
- the method for producing a titanium dioxide sol substituted with a solvent using the solvent substitution method according to the present invention is a low temperature below room temperature, for example 4 to 20 °C low temperature to prevent gelation of the sol during solvent replacement It is preferable to carry out in the state, it is transferred to the circulating fluid moving path 14 and the washing liquid moving path 16 installed between the separating means 4 and the storage means 2 to perform the solvent replacement in such a low temperature state It is preferable that heat exchange means 6, for example, a heat exchanger, for controlling the temperature of the titanium dioxide particles and the liquid containing the same become.
- the titanium dioxide sol solvent-substituted with an organic solvent in water by using the separating means 4, particularly the separating means consisting of ultrafiltration membranes according to the present invention has the effect that it is easy to prevent gelation and long-term storage.
- solvent-substituted organic solvent titanium dioxide sol itself can be commercialized as a material of nanofibers, wallpaper, lenses and / or displays using mostly organic solvents.
- a solvent-substituted titanium dioxide sol as follows.
- step (b) mixing the organic solvent mixture comprising the dispersion stabilizer of step (a) with an aqueous titanium dioxide sol in a volume ratio of 1: 1 to 1: 9, respectively, to form an organic solvent mixture comprising an aqueous titanium dioxide sol and a dispersion stabilizer.
- step (c) separating the organic solvent mixture comprising the aqueous titanium dioxide sol and the dispersion stabilizer of step (b) into an organic solvent mixture comprising the titanium dioxide particles and the water and the dispersion stabilizer using a separation means to separate the water into an organic solvent. Substituting a solvent substitution step;
- step (d) circulating and mixing the titanium dioxide particles separated by the solvent replacement step of step (c) with the mixture of step (b);
- step (e) repeatedly performing the prepared mixture of step (b) sequentially through steps (c) and (d) so that the purity of the organic solvent is 95% or more.
- the method may further include a cooling step of cooling the circulating solution below room temperature when the solvent-substituted titanium dioxide particles of step (d) are circulated.
- the cooling step is to maintain a low temperature below room temperature to prevent gelation of the sol during solvent replacement.
- 50% of the initial capacity is not particularly limited, and the capacity standard may be adopted according to a user's selection.
- the titanium dioxide sol according to the present invention solvent-substituted by the above-described manufacturing method is homogenized after mixing the organic solvent, dispersant, binder, surfactant or all of them to prepare a screen printing paste, specifically screen printing paste composition Can be.
- a screen printing paste specifically screen printing paste composition Can be.
- the dispersant, the binder and the surfactant in the composition contained in the screen printing paste composition is used in the art.
- the composition used to prepare the TiO 2 paste for screen printing according to the present invention comprises the solvent-substituted TiO 2 sol, an organic solvent, a binder, and a dispersant.
- the organic solvent is preferably terpineol, butyl carbitol or glycol acetate. It is preferable to use ethyl cellulose, methyl cellulose, or propyl cellulose as the binder, and the dispersing agent may preferably use lauryl acid, benzoic acid hydroxide, polyethylene glycol-propylene glycol.
- a dispersant is added to and dispersed in a solvent-substituted titanium dioxide sol according to the present invention.
- the amount of the dispersant added may be 0.1 to 0.5% by weight based on the solid content of the solvent-substituted titanium dioxide sol, and benzoic acid hydroxide may be preferably used as the dispersant.
- the alcohol is then evaporated while stirring the titanium dioxide sol with the dispersant added continuously until a precipitate in the form of a slurry is formed.
- terpineol is heated to 70 to 100 ° C. as an organic solvent
- ethyl cellulose is added to 2 to 7 wt% of the mixture as a binder, sufficiently stirred, and cooled at room temperature to prepare a binder solvent.
- the binder is dissolved in a solvent to give a viscosity to give a specific viscosity characteristics and serves to give a bonding force after drying the paste.
- the final titanium dioxide paste composition for screen printing is prepared by homogenizing the prepared titanium dioxide slurry and the binder solvent by three roll mill treatment.
- the TiO 2 sol [S5-300A, millennium chemicals, USA] and the organic solvent mixture containing the dispersion stabilizer 1: 1 mixed in a volume ratio and sufficiently stirred, the apparatus for producing titanium dioxide of Figure 1 at 20 °C temperature conditions Repeat the process until the solvent substitution of ethanol 95% or more using to prepare a titanium dioxide sol solvent-substituted with ethanol.
- an ultrafiltration membrane [UF membrane system, Kemicore, Korea] was used as a separation means, and a heat exchanger [Heat exchanger, Kemicore, Korea] was used as a heat exchange means.
- the particle size of the ethanol dispersed solvent-substituted sol (a) to which acetylacetone is added as a dispersion stabilizer is about 60nm
- the particle size of the aqueous titanium dioxide sol (b) before solvent replacement is about 50nm.
- Example 3 the solvent-substituted titanium dioxide sol prepared using isopropanol with acetylacetone added gelled, indicating that acetylacetone could not be used in all solvents as a dispersion stabilizer for anti-gelling.
- Example 4 In order to utilize the paste prepared according to Example 4 as a dye-sensitized solar cell, 500 to 500 micrometers were coated on the FTO-coated conductive glass substrate [FTO22, Hartport glass, USA] by using a screen printing method. After the heat treatment at °C, the dye was adsorbed for about 20 hours to prepare a dye-coated semiconductor electrode.
- the two electrodes were strongly bonded by applying heat and pressure between the prepared semiconductor electrode and the counter electrode using Surlyn (DUPONT, USA).
- a dye-sensitized solar cell was manufactured by sealing the micropores using cover glass [Cover glass, Marienfeld, Germany] and Sullin [surlyn, DUPONT, USA] to prevent leakage of the electrolyte solution.
- the organic-solvent-dispersed titanium dioxide sol obtained by solvent replacement of the aqueous titanium dioxide sol exhibits photovoltaic characteristics of an open circuit voltage (V oc ) of 0.75V and a current density (J sc ) of 5.8 mA / cm 2 .
- V oc open circuit voltage
- J sc current density
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Abstract
Description
Claims (14)
- 수성 이산화티타늄 졸 및 분산안정제를 포함하는 유기용매 혼합물이 저장되어 있는 저장수단; 상기 저장수단에 연결설치되어 이산화티타늄 입자와 물 및 분산안정제를 포함하는 유기용매 혼합물을 분리하는 분리수단; 상기 분리수단 및 저장수단 사이에 연결설치되어 분리수단에서 분리된 이산화티타늄 입자를 저장수단으로 이동시키기 위한 순환액 이동경로; 및 상기 분리수단의 일측에 연결설치되어 분리수단으로부터 분리된 물 및 분산안정제를 포함하는 유기용매 혼합물을 배출하기 위한 배출부를 포함하는 것을 특징으로 하는 이산화티타늄 졸 제조장치.
- 제 1항에 있어서,상기 순환액 이동경로에 구비되어 분리수단을 통과하며 분리된 이산화티타늄 입자의 온도를 조절하는 열교환수단을 더 포함하는 것을 특징으로 하는 이산화티타늄 졸 제조장치.
- 제 1항에 있어서,상기 분리수단의 일측에 연결설치되어 분리수단을 세척하기 위한 세척액이 채워져 있는 세척조; 및 상기 분리수단 및 저장수단 사이에 연결설치되어 분리수단을 세척한 세척액이 저장수단으로 이동되도록 하는 세척액 이동경로를 더 포함하는 것을 특징으로 하는 이산화티타늄 졸 제조장치.
- 제 3항에 있어서,상기 세척액 이동경로에 구비되어 분리수단을 세척한 세척액의 온도를 조절하는 열교환수단을 더 포함하는 것을 특징으로 하는 이산화티타늄 졸 제조장치.
- 제 1항에 있어서,상기 저장수단의 일측에 분산안정제를 포함하는 유기용매가 유입되는 유기용매 주입부가 더 구비된 것을 특징으로 하는 이산화티타늄 졸 제조장치.
- 제 1항에 있어서,상기 저장수단의 일측에 연결설치되어 저장수단에 채워져 있는 수성 이산화티타늄 졸 및 분산안정제를 포함하는 유기용매 혼합물의 pH를 조절하기 위한 pH 측정부가 더 구비된 것을 특징으로 하는 이산화티타늄 졸 제조장치.
- 제 1항 내지 제 4항 중 어느 한 항에 있어서,상기 분리수단이 한외여과막인 것을 특징으로 하는 이산화티타늄 졸 제조장치.
- 제 1항 내지 제 4항 중 어느 한 항에 있어서,상기 분산안정제가 아세틸아세톤, 폴리비닐알콜 또는 이들의 혼합물인 것을 특징으로 하는 이산화티타늄 졸 제조장치.
- 제 1항 내지 제 4항 중 어느 한 항에 있어서,상기 분산안정제를 포함하는 유기용매 혼합물이 1 내지 30중량부의 분산안정제 및 70 내지 99중량부의 유기용매로 이루어진 것을 특징으로 하는 이산화티타늄 졸 제조장치.
- (a) 1 내지 30중량부의 분산안정제 및 70 내지 99중량부의 유기용매를 혼합하여 분산안정제를 포함하는 유기용매 혼합물을 제조하는 단계;(b) 상기 단계 (a)의 분산안정제를 포함하는 유기용매 혼합물을 수성 이산화티타늄 졸과 1:1 내지 1:9의 부피비로 혼합하여 수성 이산화티타늄 졸 및 분산안정제를 포함하는 유기용매 혼합물을 준비하는 단계;(c) 분리수단을 이용하여 상기 단계 (b)의 수성 이산화티타늄 졸 및 분산안정제를 포함하는 유기용매 혼합물을 이산화티타늄 입자와 물 및 분산안정제를 포함하는 유기용매 혼합물로 분리하여 물을 유기용매로 치환하는 용매치환 단계;(d) 상기 단계 (c)의 용매치환 단계에 의해 분리된 이산화티타늄 입자를 단계 (b)의 혼합물로 순환시켜 혼합하는 단계;(e) 상기 단계 (b)의 준비된 혼합물을 단계 (c) 및 단계 (d)를 거치도록 순차적으로 반복 수행하여 유기용매의 순도가 95% 이상이 되도록 하는 것을 포함하는 이산화티타늄 졸의 제조방법.
- 제 10항에 있어서,상기 단계 (d)의 용매치환된 이산화티타늄 입자의 순환시 그 순환용액을 상온이하로 냉각하는 냉각단계를 더 포함하는 이산화티타늄 졸의 제조방법.
- 제 10항에 있어서,상기 단계 (b)의 준비된 혼합물에 포함된 수성 이산화티타늄 졸 및 분산안정제를 포함하는 유기용매 혼합물이 최초 용량대비 50% 이상 감소하면 감소된 양 만큼 분산안정제를 포함하는 유기용매 혼합물을 더 제공하는 단계를 더 포함하는 이산화티타늄 졸의 제조방법.
- 제 10항에 있어서,상기 유기용매가 에틸알콜, 메틸알콜, 이소프로필알콜, 부틸알콜, 에틸렌글리콜 또는 이들의 혼합물인 것을 특징으로 하는 이산화티타늄 졸의 제조방법.
- 제 10항 내지 제13항 중 어느 한 항에 따른 방법에 따라 제조된 이산화티타늄 졸에 분산제, 바인더, 계면활성제 또는 이들 모두를 혼합한 뒤 균질화하는 것을 포함하는 스크린인쇄용 페이스트 조성물의 제조방법.
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US13/120,915 US20120056137A1 (en) | 2008-09-26 | 2009-09-07 | Apparatus for and Method of Preparing Titanium Dioxide Sol and Paste Composition Using the Same |
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KR101137460B1 (ko) * | 2009-05-07 | 2012-04-20 | (주) 나노팩 | 수성 이산화티타늄 페이스트 조성물 및 이의 제조방법 |
FR2980187B1 (fr) * | 2011-09-16 | 2013-10-18 | Centre Nat Rech Scient | Formulation de solutions colloidales a base d'oxyde de titane pour procedes d'enduction et d'impression : amelioration du rendement et de la duree de vie des cellules photovoltaiques organiques pin-nip |
TWI438914B (zh) * | 2012-03-22 | 2014-05-21 | Nanmat Technology Co Ltd | 具有高透光率相對電極之染料敏化太陽能電池 |
CN102774883B (zh) * | 2012-07-09 | 2013-11-06 | 青岛科技大学 | 一种金红石型二氧化钛纳米线薄膜及其制备方法和用途 |
US9834745B2 (en) * | 2012-07-19 | 2017-12-05 | Nissan Chemical Industries, Ltd. | Cleaning fluid for semiconductor, and cleaning method using the same |
CN103130269A (zh) * | 2013-04-01 | 2013-06-05 | 济南裕兴化工有限责任公司 | 钛白粉生产中黑钛液沉降净化装置 |
JP6283560B2 (ja) * | 2014-04-23 | 2018-02-21 | 出光興産株式会社 | 固体電解質製造装置及び固体電解質の製造方法 |
JP6758809B2 (ja) * | 2015-09-29 | 2020-09-23 | 日東電工株式会社 | 多孔体ゲル含有液の製造方法、多孔体ゲル含有液、高空隙層の製造方法、高空隙率多孔体の製造方法、および積層フィルムロールの製造方法 |
CN117320463A (zh) * | 2023-11-27 | 2023-12-29 | 华电电力科学研究院有限公司 | 一种介孔钙钛矿太阳能电池及其制备方法 |
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JP3898792B2 (ja) * | 1996-10-02 | 2007-03-28 | 石原産業株式会社 | 表面処理された酸化チタンゾルの製造方法 |
KR20020005227A (ko) * | 2000-06-29 | 2002-01-17 | 김충섭 | 친수성 및 친유성이 우수한 고농도 티타니아 졸의 제조방법 |
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KR20100035356A (ko) | 2010-04-05 |
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CN102164859B (zh) | 2014-06-04 |
US20120056137A1 (en) | 2012-03-08 |
CN102164859A (zh) | 2011-08-24 |
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