CN101130159A - Method for producing interpose porus titanium dioxide photocatalyst by hydro-thermal method in weak acid condition - Google Patents
Method for producing interpose porus titanium dioxide photocatalyst by hydro-thermal method in weak acid condition Download PDFInfo
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- CN101130159A CN101130159A CNA2007100303292A CN200710030329A CN101130159A CN 101130159 A CN101130159 A CN 101130159A CN A2007100303292 A CNA2007100303292 A CN A2007100303292A CN 200710030329 A CN200710030329 A CN 200710030329A CN 101130159 A CN101130159 A CN 101130159A
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Abstract
The invention discloses a preparing method of dielectric titanium oxide optical catalyst under weak acid condition, which comprises the following steps: stirring acetic acid solution of titanic acid n-butyl and alcohol solution of non-ion mould agent to form titanium sol; heating the stirred titanium sol under 80-200 deg. c for 12-148h; drying the hydrothermal product to obtain the gel solid; sintering the solid at 300-750 deg. c for 2-10h; obtaining the product. The invention doesn't break equipment and environment, which produces the product with even aperture distribution, large specific surface area and even aperture.
Description
Technical field
The invention belongs to the technical field of photochemical catalyst, particularly a kind of method of producing interpose porus titanium dioxide photocatalyst by hydro-thermal method in weak acid condition.
Background technology
Mesoporous material is the Multifunction material that has grown up since the nineties in last century, have the duct be shaped good, the aperture homogeneous, bigger plurality of advantages such as specific area can be regulated and control and have to aperture size within the specific limits.Titanium dioxide has good photoelectric properties and photocatalysis performance simultaneously.Mesopore titania photocatalyst has had the characteristics and the advantage of mesoporous material and titanium dioxide concurrently, and therefore the research about mesoporous TiO 2 has also become a global research focus.In numerous methods of preparation mesoporous TiO 2, no matter be the sol gel reaction of predecessor, still the self assembly of template agent all is a process that system's entropy reduces, reaction is if think then to need smoothly to draw energy from the external world, method commonly used is to reach this purpose by ageing at a certain temperature, but digestion time needs a couple of days usually.The new method that hydro-thermal method is developed in order to overcome above-mentioned defective just.Hydro-thermal method is considered to a kind of method of synthesis of titanium dioxide photochemical catalyst very reliably, and for ordinary sol-gel method, because it can provide the reaction environment of a high energy field, can greatly shorten the reaction time, and can effectively improve the physical and chemical performance of prepared material.
At mesoporous TiO
2Preparation process in, the too fast hydrolysis that suppresses organic or inorganic titanium source is an important step of preparation.Usually, should suppress the too fast hydrolysis in titanium source, also need with HCl, HNO by reagent such as adding acetylacetone,2,4-pentanedione, isopropyl alcohols
3As acid catalyst, come synthetic TiO Deng strong acid with meso-hole structure
2Organic reagent kind that this synthetic method is used and amount are all bigger, therefore cause very big reagent waste in building-up process, and the organic matter that afterwards also needs to remove the various interpolations in the mesoporous material by the heating crystallization mode obtain active TiO
2And the used strong acid in the compound experiment has bigger pollution and corrosiveness to environment and experimental facilities; And at HCl or HNO
3In inorganic acid medium, the formation speed of titanium gel is fast, wayward, forms product TiO
2Particle diameter is bigger, thereby can cause the decline of photocatalyst activity.
Summary of the invention
In order to overcome above-mentioned the deficiencies in the prior art, the object of the present invention is to provide a kind of method of producing interpose porus titanium dioxide photocatalyst by hydro-thermal method in weak acid condition.
Purpose of the present invention is achieved through the following technical solutions: the method for Hydrothermal Preparation mesopore titania photocatalyst under a kind of weakly acidic condition comprises the steps:
(1) 1～20 gram tetrabutyl titanate is joined in 6～120 milliliters of acetums, stirred 2～24 hours, obtain the acetum of tetrabutyl titanate; 0.005～1.5 gram nonionic template agent is joined in 10 milliliters of ethanolic solutions, be stirred to dissolving, obtain the ethanolic solution of nonionic template agent, above-mentioned two kinds of solution are mixed to stir make titanium colloidal sol.
(2) with titanium colloidal sol in 80～200 ℃ of hydro-thermals 12～148 hours, the product oven dry after the hydro-thermal obtains gelatinous solid, the solid after will dry was again calcined 2～10 hours in 300～750 ℃, can obtain mesopore titania photocatalyst.
In order to realize the present invention better, the percentage by volume of described acetum is 5%～80%.
The agent of described nonionic template is polyoxyethylene-poly-oxypropylene polyoxyethylene (P123), polyoxyethylene (PEG) or PVP (PVP).
Preferred especially, the molecular weight of described polyoxyethylene (PEG) is 200～20000; The molecular weight of PVP is 3000～2000000.
The average pore size of described mesopore titania photocatalyst is 8.4～16.0nm.
The present invention compared with prior art has following advantage and beneficial effect: the present invention is reflected in the weakly acidic condition and carries out, reaction condition gentleness in acetic aid medium, and the butyl titanate hydrolysis rate is slow, easy control of reaction conditions.In system, generate polymer, formed the gel of stable homogeneous, a milder reaction environment can be provided, more helped the titanium gel forms meso-hole structure under the traction of template agent titanium dioxide.And forefathers are prepared TiO
2Hydrolysis inhibitor in the photochemical catalyst hydrolytic process (acetylacetone,2,4-pentanedione, isopropyl alcohol etc.) and strong acid catalyst (HCl, HNO
3Deng) unite two into one, in reaction, not only also played simultaneously the effect of acid catalyst as hydrolysis inhibitor with acetic acid, thereby the kind and the consumption that prepare required experiment reagent have been reduced, replace above plurality of reagents with weak acid acetic acid, reagent type and consumption have been reduced, preparation process is simple, and acetum is less to environment and damage of facilities, meets current promotion requirements of green environmental protection.
Description of drawings
Fig. 1 is the TEM spectrogram of the mesopore titania photocatalyst for preparing of the present invention.
Fig. 2 is secretly absorption of DMP, photodissociation and the kinetics of photocatalytic degradation curve that 450 ℃ of calcinings make mesopore titania photocatalyst.
Fig. 3 is the DMP kinetics of photocatalytic degradation curve that different calcining heats make mesopore titania photocatalyst.
Fig. 4 is the XRD figure spectrum that different calcining heats make mesopore titania photocatalyst.
The specific embodiment
The present invention is described in further detail below in conjunction with embodiment and accompanying drawing, but embodiments of the present invention are not limited thereto.
(1) get the 20g tetrabutyl titanate, be added drop-wise in the acetum of 120mL vigorous stirring, the percentage by volume of acetum is respectively 20%, continues to stir 4h, obtains the acetum of tetrabutyl titanate.1.5gP123 is dissolved in the 10mL absolute ethyl alcohol, is stirred to it and dissolves fully, obtain the ethanolic solution of nonionic template agent.The ethanolic solution that will be dissolved with P123 subsequently dropwise joins in the acetum of tetrabutyl titanate under vigorous stirring, after dropwising, continues to stir 24h, makes titanium colloidal sol.
(2) the titanium colloidal sol after will stirring is transferred in the polytetrafluoroethylene (PTFE) bottle, 120 ℃ of hydro-thermal 24h, the 80 ℃ of oven dry in baking oven of product after the hydro-thermal obtain yellow gel shape solid, and the solid after will drying again is 300 ℃ of calcining 4h in Muffle furnace, promptly obtain mesopore titania photocatalyst.The structural parameters of prepared mesopore titania photocatalyst see Table 1.
(1) get the 20g tetrabutyl titanate, be added drop-wise in the acetum of 120mL vigorous stirring, the percentage by volume of acetum is respectively 20%, continues to stir 4h, obtains the acetum of tetrabutyl titanate.1.5gP123 is dissolved in the 10mL absolute ethyl alcohol, is stirred to it and dissolves fully, obtain the ethanolic solution of nonionic template agent.The ethanolic solution that will be dissolved with P123 subsequently dropwise joins in the acetum of tetrabutyl titanate under vigorous stirring, after dropwising, continues to stir 24h, makes titanium colloidal sol.
(2) the titanium colloidal sol after will stirring is transferred in the polytetrafluoroethylene (PTFE) bottle, 120 ℃ of hydro-thermal 24h, the 80 ℃ of oven dry in baking oven of product after the hydro-thermal obtain yellow gel shape solid, and the solid after will drying again is 450 ℃ of calcining 4h in Muffle furnace, promptly obtain mesopore titania photocatalyst.The structural parameters of prepared mesopore titania photocatalyst see Table 1.
Embodiment 3
Prepare mesoporous TiO 2 with P123 for the template agent:
(1) get the 20g tetrabutyl titanate, be added drop-wise in the acetum of 120mL vigorous stirring, the percentage by volume of acetum is respectively 20%, continues to stir 4h, obtains the acetum of tetrabutyl titanate.1.5gP123 is dissolved in the 10mL absolute ethyl alcohol, is stirred to it and dissolves fully, obtain the ethanolic solution of nonionic template agent.The ethanolic solution that will be dissolved with P123 subsequently dropwise joins in the acetum of tetrabutyl titanate under vigorous stirring, after dropwising, continues to stir 24h, makes titanium colloidal sol.
(2) the titanium colloidal sol after will stirring is transferred in the polytetrafluoroethylene (PTFE) bottle, 120 ℃ of hydro-thermal 24h, the 80 ℃ of oven dry in baking oven of product after the hydro-thermal obtain yellow gel shape solid, and the solid after will drying again is 600 ℃ of calcining 4h in Muffle furnace, promptly obtain mesopore titania photocatalyst.The structural parameters of prepared mesopore titania photocatalyst see Table 1.Fig. 1 is the TEM spectrogram of prepared mesopore titania photocatalyst.
Embodiment 4
(1) get the 15g tetrabutyl titanate, be added drop-wise in the acetum of 80mL vigorous stirring, the percentage by volume of acetum is respectively 10%, continues to stir 2h, obtains the acetum of tetrabutyl titanate.With the 1.2g molecular weight is that 200 PEG (molecular weight is that 200 PEG is expressed as PEG200, and other are similar) is dissolved in the 10mL absolute ethyl alcohol, is stirred to it and dissolves fully, obtains the ethanolic solution of nonionic template agent.The ethanolic solution that will be dissolved with PEG200 subsequently dropwise joins in the acetum of tetrabutyl titanate under vigorous stirring, after dropwising, continues to stir 24h, makes titanium colloidal sol.
(2) the titanium colloidal sol after will stirring is transferred in the polytetrafluoroethylene (PTFE) bottle, 120 ℃ of hydro-thermal 24h, the 80 ℃ of oven dry in baking oven of product after the hydro-thermal obtain yellow gel shape solid, and the solid after will drying again is 350 ℃ of calcining 8h in Muffle furnace, promptly obtain mesopore titania photocatalyst.The structural parameters of prepared mesopore titania photocatalyst see Table 1.
Embodiment 5
(1) get the 1g tetrabutyl titanate, be added drop-wise in the acetum of 20mL vigorous stirring, the percentage by volume of acetum is respectively 20%, continues to stir 4h, obtains the acetum of tetrabutyl titanate.With the 0.001g molecular weight is that 600 PEG is dissolved in the 10mL absolute ethyl alcohol, is stirred to it and dissolves fully, obtains the ethanolic solution of nonionic template agent.The ethanolic solution that will be dissolved with PEG600 subsequently dropwise joins in the acetum of tetrabutyl titanate under vigorous stirring, after dropwising, continues to stir 24h, makes titanium colloidal sol.
(2) the titanium colloidal sol after will stirring is transferred in the polytetrafluoroethylene (PTFE) bottle, 200 ℃ of hydro-thermal 12h, the 80 ℃ of oven dry in baking oven of product after the hydro-thermal obtain yellow gel shape solid, and the solid after will drying again is 450 ℃ of calcining 4h in Muffle furnace, promptly obtain mesopore titania photocatalyst.The structural parameters of prepared mesopore titania photocatalyst see Table 1.
Embodiment 6
(1) get the 3g tetrabutyl titanate, be added drop-wise in the acetum of 120mL vigorous stirring, the percentage by volume of acetum is respectively 40%, continues to stir 8h, obtains the acetum of tetrabutyl titanate.With the 0.005g molecular weight is that 2000 PEG is dissolved in the 10mL absolute ethyl alcohol, is stirred to it and dissolves fully, obtains the ethanolic solution of nonionic template agent.The ethanolic solution that will be dissolved with PEG2000 subsequently dropwise joins in the acetum of tetrabutyl titanate under vigorous stirring, after dropwising, continues to stir 24h, makes titanium colloidal sol.
(2) the titanium colloidal sol after will stirring is transferred in the polytetrafluoroethylene (PTFE) bottle, 80 ℃ of hydro-thermal 148h, the 80 ℃ of oven dry in baking oven of product after the hydro-thermal obtain yellow gel shape solid, and the solid after will drying again is 550 ℃ of calcining 4h in Muffle furnace, promptly obtain mesopore titania photocatalyst.The structural parameters of prepared mesopore titania photocatalyst see Table 1.
Embodiment 7
(1) get the 10g tetrabutyl titanate, be added drop-wise in the acetum of 60mL vigorous stirring, the percentage by volume of acetum is respectively 80%, continues to stir 4h, obtains the acetum of tetrabutyl titanate.With the 1.5g molecular weight is that 20000 PEG is dissolved in the 10mL absolute ethyl alcohol, is stirred to it and dissolves fully, obtains the ethanolic solution of nonionic template agent.The ethanolic solution that will be dissolved with PEG20000 subsequently dropwise joins in the acetum of tetrabutyl titanate under vigorous stirring, after dropwising, continues to stir 24h, makes titanium colloidal sol.
(2) the titanium colloidal sol after will stirring is transferred in the polytetrafluoroethylene (PTFE) bottle, 150 ℃ of hydro-thermal 48h, the 80 ℃ of oven dry in baking oven of product after the hydro-thermal obtain yellow gel shape solid, and the solid after will drying again is 650 ℃ of calcining 4h in Muffle furnace, promptly obtain mesopore titania photocatalyst.The structural parameters of prepared mesopore titania photocatalyst see Table 1.
Embodiment 8
(1) get the 12g tetrabutyl titanate, be added drop-wise in the acetum of 100mL vigorous stirring, the percentage by volume of acetum is respectively 5%, continues to stir 24h, obtains the acetum of tetrabutyl titanate.With the 1g molecular weight is that 3000 PVP is dissolved in the 10mL absolute ethyl alcohol, is stirred to it and dissolves fully, obtains the ethanolic solution of nonionic template agent.The ethanolic solution that will be dissolved with molecular weight subsequently and be 3000 PVP dropwise joins in the acetum of tetrabutyl titanate under vigorous stirring, after dropwising, continues to stir 24h, makes titanium colloidal sol.
(2) the titanium colloidal sol after will stirring is transferred in the polytetrafluoroethylene (PTFE) bottle, 90 ℃ of hydro-thermal 100h, the 80 ℃ of oven dry in baking oven of product after the hydro-thermal obtain yellow gel shape solid, and the solid after will drying again is 300 ℃ of calcining 10h in Muffle furnace, promptly obtain mesopore titania photocatalyst.The structural parameters of prepared mesopore titania photocatalyst see Table 1.
Embodiment 9
(1) get the 8g tetrabutyl titanate, be added drop-wise in the acetum of 70mL vigorous stirring, the percentage by volume of acetum is respectively 40%, continues to stir 10h, obtains the acetum of tetrabutyl titanate.With the 0.5g molecular weight is that 100000 PVP is dissolved in the 10mL absolute ethyl alcohol, is stirred to it and dissolves fully, obtains the ethanolic solution of nonionic template agent.The ethanolic solution that will be dissolved with molecular weight subsequently and be 100000 PVP dropwise joins in the acetum of tetrabutyl titanate under vigorous stirring, after dropwising, continues to stir 24h, makes titanium colloidal sol.
(2) the titanium colloidal sol after will stirring is transferred in the polytetrafluoroethylene (PTFE) bottle, 100 ℃ of hydro-thermal 72h, the 60 ℃ of oven dry in baking oven of product after the hydro-thermal obtain yellow gel shape solid, and the solid after will drying again is 600 ℃ of calcining 4h in Muffle furnace, promptly obtain mesopore titania photocatalyst.The structural parameters of prepared mesopore titania photocatalyst see Table 1.
(1) get the 15g tetrabutyl titanate, be added drop-wise in the acetum of 90mL vigorous stirring, the percentage by volume of acetum is respectively 80%, continues to stir 4h, obtains the acetum of tetrabutyl titanate.In the another one beaker, be that 2000000 PVP is dissolved in the 10mL absolute ethyl alcohol with the 1.5g molecular weight, be stirred to it and dissolve fully, obtain the ethanolic solution of nonionic template agent.The ethanolic solution that will be dissolved with molecular weight subsequently and be 2000000 PVP dropwise joins in the acetum of tetrabutyl titanate under vigorous stirring, after dropwising, continues to stir 24h, makes titanium colloidal sol.
(2) the titanium colloidal sol after will stirring is transferred in the polytetrafluoroethylene (PTFE) bottle, 120 ℃ of hydro-thermal 48h, the 70 ℃ of oven dry in baking oven of product after the hydro-thermal obtain yellow gel shape solid, and the solid after will drying again is 750 ℃ of calcining 2h in Muffle furnace, promptly obtain mesopore titania photocatalyst.The structural parameters of prepared mesopore titania photocatalyst see Table 1.
Comparing embodiment
In order to check the photocatalytic activity that makes mesoporous TiO 2, with environment incretion interferon repefral (DMP) is target contaminant, analyze the change in concentration of target contaminant in the degradation process by high performance liquid chromatography (HPLC), investigate the adsorption capacity and the photocatalytic activity that make mesoporous TiO 2, and compared the photocatalytic activity difference of the mesoporous TiO 2 (being specific embodiment 1～3 prepared mesoporous TiO 2) after different calcining heats are handled.
It is test reactor that 160ml condensed water jacketed glass cup is adopted in the photocatalytic activity experiment, and the initial concentration of the DMP aqueous solution is 250 μ M, and initial volume is 150mL, catalyst concn is 2g/L, light source is 125W high-pressure sodium lamp (GGZ300, the inferior bright lighting apparatus in Shanghai Co., Ltd, E
Max=365nm).Before light-catalyzed reaction began, dark earlier absorption 30min guaranteed that catalyst reaches adsorption equilibrium.In the overall optical catalytic reaction process, keep reaction solution constant temperature at 27 ± 2 ℃ with condensed water, keep catalyst to be uniformly dispersed by violent magnetic agitation.The 5mL that takes a sample at regular intervals detects the DMP change in concentration in the solution with high performance liquid chromatography behind the filtering with microporous membrane.
Fig. 2 is dark absorption, photodissociation and the kinetics of photocatalytic degradation curve of DMP.As can be seen from Figure 2, when 10min, DMP and mesopore titania photocatalyst just reach adsorption equilibrium, and the clearance of dark absorption is 3.48%.Under experiment condition, photodissociation two hours, DMP only reduces 6.75%.And behind the adding mesopore titania photocatalyst, two hours degradation rate of photocatalytic degradation is then up to 95.99%.This shows that the mesopore titania photocatalyst that makes can be removed target contaminant DMP efficiently, has good photocatalytic activity.Fig. 3 is the kinetics of photocatalytic degradation curve of the mesopore titania photocatalyst after handling through different calcining heats to DMP.As seen from Figure 3, through the mesopore titania photocatalyst after 300 ℃, 450 ℃ and the 600 ℃ of calcination processing, under the experiment condition, the photocatalytic degradation rate to DMP was respectively 86.95%, 95.99% and 99.63% in two hours respectively.Because calcination processing has a significant impact the crystalline phase tool of titanium dioxide, compose (see figure 4) as can be seen from the XRD figure of this group sample, raising along with calcining heat, the peak molded breadthization weakens, sharpening trend significantly strengthens, shows to improve the mesopore titania photocatalyst that calcining heat can obtain more complete Detitanium-ore-type crystalline phase, and the sample of 600 ℃ of calcinings, the sign that changes to rutile-type does not appear in the Detitanium-ore-type crystalline phase that still can be kept perfectly.Improve that part pore structure that calcining heat can cause sample is on the one hand caved in and the specific area and the pore volume that significantly reduce sample reduces the photocatalytic activity that makes sample; Can improve the photocatalytic activity that makes sample because of the crystalline phase of significantly improving sample again on the other hand.And the experimental result of dark absorption shows that the mesopore titania photocatalyst that makes is not very strong to the suction-operated of hydrophobic organic pollutant DMP, so the minimizing of specific area and pore volume does not have the improvement of crystalline phase big to the influence of photocatalytic activity to the influence of photocatalytic activity.Therefore, from the kinetics of photocatalytic degradation curve also as can be seen,, make mesopore titania photocatalyst the photocatalytic degradation rate of DMP is improved gradually along with the raising of calcining heat.
The structural parameters of table 1 embodiment 1～10 prepared mesopore titania photocatalyst
| Embodiment | Average grain diameter (nm) | BET (m 2/g) | Average pore size (nm) | Micro pore volume (cm 3/g) | Cumulative volume (cm 3/g) |
| 1 | 12.2 | 139 | 8.4 | 0.054 | 0.38 |
| 2 | 13.6 | 116 | 9.0 | 0.046 | 0.31 |
| 3 | 19.7 | 50 | 11.0 | 0.019 | 0.18 |
| 4 | 13.8 | 85 | 12.8 | 0.034 | 0.33 |
| 5 | 14.6 | 79 | 11.3 | 0.030 | 0.31 |
| 6 | 15.6 | 74 | 10.4 | 0.029 | 0.27 |
| 7 | 17.0 | 69 | 9.9 | 0.028 | 0.24 |
| 8 | 12.2 | 107 | 8.7 | 0.042 | 0.30 |
| 9 | 18.2 | 98 | 13.3 | 0.037 | 0.32 |
| 10 | 20.5 | 88 | 15.8 | 0.028 | 0.34 |
The foregoing description is a preferred implementation of the present invention; but embodiments of the present invention are not restricted to the described embodiments; other any do not deviate from change, the modification done under spiritual essence of the present invention and the principle, substitutes, combination, simplify; all should be the substitute mode of equivalence, be included within protection scope of the present invention.
Claims (5)
1. the method for a producing interpose porus titanium dioxide photocatalyst by hydro-thermal method in weak acid condition is characterized in that comprising the steps:
(1) 1～20 gram tetrabutyl titanate is joined in 6～120 milliliters of acetums, stirred 2～24 hours, obtain the acetum of tetrabutyl titanate; 0.005～1.5 gram nonionic template agent is joined in 10 milliliters of ethanolic solutions, be stirred to dissolving, obtain the ethanolic solution of nonionic template agent, above-mentioned two kinds of solution are mixed to stir make titanium colloidal sol;
(2) with titanium colloidal sol in 80～200 ℃ of hydro-thermals 12～148 hours, the product oven dry after the hydro-thermal obtains gelatinous solid, the solid after will dry was again calcined 2～10 hours in 300～750 ℃, can obtain mesopore titania photocatalyst.
2. the method for producing interpose porus titanium dioxide photocatalyst by hydro-thermal method in weak acid condition according to claim 1, it is characterized in that: the percentage by volume of described acetum is 5%～80%.
3. the method for producing interpose porus titanium dioxide photocatalyst by hydro-thermal method in weak acid condition according to claim 1, it is characterized in that: the agent of described nonionic template is polyoxyethylene-poly-oxypropylene polyoxyethylene, polyoxyethylene or PVP.
4. the method for producing interpose porus titanium dioxide photocatalyst by hydro-thermal method in weak acid condition according to claim 3, it is characterized in that: described polyoxyethylated molecular weight is 200～20000; The molecular weight of PVP is 3000～2000000.
5. the method for producing interpose porus titanium dioxide photocatalyst by hydro-thermal method in weak acid condition according to claim 1, it is characterized in that: the average pore size of described mesopore titania photocatalyst is 8.4～16.0nm.
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| CN103214033A (en) * | 2013-05-09 | 2013-07-24 | 哈尔滨工业大学 | Preparation method of size-controlled spherical mesoporous titanium dioxide |
| CN103840143A (en) * | 2014-03-19 | 2014-06-04 | 中南大学 | Preparation method of S/TiO2 composite material for anode of sodium-sulfur battery |
| CN103840143B (en) * | 2014-03-19 | 2016-04-06 | 中南大学 | A kind of lithium-sulphur cell positive electrode S/TiO 2the preparation method of composite material |
| CN107502259A (en) * | 2017-09-13 | 2017-12-22 | 陈贤尧 | LED encapsulation material that a kind of hardness is high and adhesion strength is excellent and preparation method thereof |
| CN108355634A (en) * | 2018-02-09 | 2018-08-03 | 北京加诚科技发展有限公司 | A kind of mesoporous TiO2The preparation method of photochemical catalyst |
| CN108355634B (en) * | 2018-02-09 | 2020-12-29 | 北京加诚科技发展有限公司 | Mesoporous TiO 22Method for preparing photocatalyst |
| CN113117704A (en) * | 2021-04-16 | 2021-07-16 | 浙江工业大学 | Preparation method and application of modified nano titanium dioxide photocatalyst |
| CN115869951A (en) * | 2022-12-13 | 2023-03-31 | 鲁东大学 | Non-noble metal modified titanium dioxide catalyst and preparation method and application thereof |
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