CN100484620C - Method for preparing mesoporous crystal titanium dioxide using light-sensitive active matter as template - Google Patents
Method for preparing mesoporous crystal titanium dioxide using light-sensitive active matter as template Download PDFInfo
- Publication number
- CN100484620C CN100484620C CNB2007100657475A CN200710065747A CN100484620C CN 100484620 C CN100484620 C CN 100484620C CN B2007100657475 A CNB2007100657475 A CN B2007100657475A CN 200710065747 A CN200710065747 A CN 200710065747A CN 100484620 C CN100484620 C CN 100484620C
- Authority
- CN
- China
- Prior art keywords
- titanium dioxide
- mesoporous
- crystallization
- mixture
- photosensitive activity
- 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.)
- Active
Links
Images
Abstract
The invention relates to a mesoporous TiO2 Crystal Preparation method with a photosensitive activity as template, it belongs to chemical engineering technology. Use of titanium alkoxides or ion-containing titanium ions titanate or salts or mixtures of these substances as TiO2 precursor, ethanol or acetone or a mixture of both as the diluents, used ethylene glycol or isopropyl alcohol or a mixture of both as dispersant, used Perylenequinone derivatives or other natural extract with photosensitive activity as the photosensitive activity object; the titanium dioxide precursor hydrolysis and crystal to get the mesoporous TiO2 precursor; mesoporous TiO2 precursor was sintering to get mesoporous TiO2 Crystal with photosensitive activity as template. The mesoporous materials of this invention through sol-gel method and the high-temperature burning, do visible catalyst, or get carbon nm tube by the separation and purification. The invention has low cost of production, product higher catalytic activity, stable performance, simple process.
Description
Technical field
The invention belongs to technical field of chemical engineering, be specifically related to the preparation method of mesoporous crystal titanium dioxide, prepared mesoporous crystal titanium dioxide can be done visible light catalyst, perhaps obtains CNT through separating to purify.
Background technology
Titanium dioxide semiconductor is stable because of its chemical property, indissoluble, nontoxic, low cost and other advantages, be considered to a kind of environmental type photochemical catalyst, but it is compound that the electronics of monomer and hole take place easily, reduced photocatalysis efficiency, and greater band gap (about 3.2eV), can only be in ultra-violet (UV) band display light chemism, low to solar energy utilization rate, become restriction excited by visible light TiO
2Light-catalysed bottleneck.
The dye photoactivation technology is to improve optically catalytic TiO 2 efficient modified titanic oxide means the most widely, for example, publication number 1680021 applications for a patent for invention " the hydro-thermal preparation method on the throne of phthalein mountain valley with clumps of trees and bamboo sensitized nano cobalt dioxide powder ", the phthalein mountain valley with clumps of trees and bamboo participates in nano titanium oxide formation and compound under hydrothermal condition, obtains the nano TiO 2 powder of phthalein mountain valley with clumps of trees and bamboo sensitization.But sensitizer excitation state is injected the electronics of semiconductor conduction band and is taken place oppositely compound easily; Sensitizer is an extinction material in most of photoactivate catalyst system, reaction active site is still provided by titanium dioxide, the exhibiting high surface adsorption potential that sensitizer occupies semi-conducting material must influence the lifting of photocatalysis usefulness, when being applied to the organic pollution processing, photosensitive dose of absorption of competing of organic pollutant molecule and sensitizer and titanium dioxide causes reducing the free radical cracking organic pollutant molecule; Because there is the adsorption-desorption balance in sensitizer or irreversible reaction takes place at semiconductor material surface, sensitizer easily runs off from catalyst surface, causes the photoactivate ability drop, causes the water source secondary pollution.It will be further appreciated that existing dye sensitization mesopore molecular sieve or TiO
2Mode mainly contain following several: the overwhelming majority is at room temperature synthetic good mesopore molecular sieve or TiO
2After absorbing dye again; Has only only a few at preparation mesopore molecular sieve or TiO
2Process in add dyestuff, but still must be with other material as template.Since the scientists of Mobil company in 1992 found that first regular mesopore molecular sieve is as the even mesoporous MCM-41 molecular sieve with six sides arrangement, mould plate technique stepped into its gold stage.Subsequently, mould plate technique such as liquid crystal templated, polymer template, emulsion template is used widely in the preparation of mesopore molecular sieve.
CNT structurally with fullerene seemingly, be the nano-scale carbon cellulosic material of developing energetically in recent years.Because the distinctive immanent structure of CNT, CNT shows peculiar physical property: density is low, intensity is high, conductive and heat-conductive.The field of using comprises nanoelectronics and photoelectronics, field emitting electronic source, high strength performance material, sensor and actuator, thermal conducting material, optical material, conductive film etc.The method for preparing CNT is many, arc discharge method, vapour deposition process (claiming catalytic pyrolysis method again), the laser evaporation method etc. of comprising at present commonly used.These methods all need just can prepare CNT under high temperature, condition of high voltage, thereby have restricted the preparation and the application of CNT.
Summary of the invention
The purpose of this invention is to provide with the photosensitive activity thing is the preparation method of the mesoporous crystal titanium dioxide of template, prepared mesoporous crystal titanium dioxide can be used as visible light catalyst, perhaps obtain CNT, thereby realize stablizing, produce the efficient visible light catalyst reliably, at low cost and make CNT at normal pressure through separating to purify.
The inventive method is as follows:
1, to contain the titanium ion alkoxide or to contain the inorganic salts of titanium ion or the mixture of metatitanic acid or above material is the presoma of titanium dioxide, with ethanol or acetone or the mixture of the two is diluent, with ethylene glycol or isopropyl alcohol or the mixture of the two is that dispersant ， Yi perylene naphthoquinone derivatives or other natural extract with photosensitive activity are the photosensitive activity thing.
The natural extract that Suo Shu perylene naphthoquinone derivatives or other have photosensitive activity can be Elsinochrome element or hypocrellin A or hypocrelline B or imperial tabasheer ketone or GINKGO BILOBA EXTRACT or kudzu root flavone or Hecogenin or rosemary, polyphenol etc.
2, form the titanium dioxide precursor liquid by following components in part by weight: the presoma 3～15% of titanium dioxide, diluent 65%～90%, dispersant 5%～15%, photosensitive activity thing 1%～5%.
3,, get the presoma of mesoporous TiO 2 with crystallization after the hydrolysis of titanium dioxide precursor liquid.With crystallization temperature is 70～100 ℃, crystallization time be 3～7 days for best.
4, the presoma with mesoporous TiO 2 carries out sintering, is able to the mesoporous crystal titanium dioxide that the photosensitive activity thing is a template.With sintering temperature is 300 ℃～500 ℃, and sintering time is that 2h～8h is for best.
Just can get CNT if separate the mesoporous crystal titanium dioxide of purification gained.
The inventive method is to be template with the material with photosensitive activity, high-specific surface area, stable performance that obtains by sol-gal process and high temperature sintering and the mesoporous material with Detitanium-ore-type of high visible light catalytic activity.The mesoporous crystal titanium dioxide of the high visible light catalytic activity that the inventive method obtains can be used for advanced treating drinking-water, industrial organic waste water and toxic gas.
Fig. 1 is the visible light catalysis activity result of the test by the mesoporous crystal titanium dioxide of the inventive method acquisition.The model reaction of estimating as photocatalytic activity with the degradation reaction of acetaldehyde CH3CHO in the air.The 1000W high-pressure sodium lamp is as light source, and catalyst amount is about 0.05 gram.When carrying out the visible light catalytic experiment, guarantee to filter ultraviolet light with two tablet filters, a slice is for filtering the interference filter below the 400nm, and another sheet is for allowing the coloured glass filter that passes through more than the 420nm.Under this condition, as photochemical catalyst, any activity is not arranged with typical ultraviolet light catalyst P25 (Deggusa), thereby proved conclusively and do not have ultraviolet light to pass through.With the variation of gas chromatographic detection acetaldehyde concentration and product carbon dioxide with light application time.The longitudinal axis is an acetaldehyde concentration in the air, and transverse axis is a light application time.
From Fig. 1 as seen, if the mesoporous crystal titanium dioxide of catalyst for obtaining by the inventive method, from 90min, acetaldehyde Cmax value is the line style degraded; The P25 (Deggusa) of contrast does not show active.
Fig. 2 is the high power sem photograph by the mesoporous crystal titanium dioxide of the inventive method acquisition, shows that CNT covers the mesoporous crystal titanium dioxide surface.
Preparing mesoporous crystal titanium dioxide with this method has the following advantages:
(1) the gained mesoporous crystal titanium dioxide has high-specific surface area and regular aperture, make the light-catalyzed reaction activity increase, help the diffusion of reactant, in Molecular Adsorption and catalytic process, have the excellent properties different with the non-porous titanium dioxide nano material.
(2) raw materials used is general industrial chemicals and natural extract, wide material sources, and production cost is low.
(3) the catalytic activity height of the mesoporous crystal titanium dioxide degrade acetaldehyde of gained, stable performance under the high temperature, technology is simple.
(4) just can get CNT if separate the mesoporous crystal titanium dioxide of purification gained, simple, the mild condition of therefore feasible preparation CNT technology: low temperature (300 ℃-500 ℃), normal pressure.
Description of drawings
Fig. 1 is the mesoporous crystal titanium dioxide of gained of the present invention under visible light and the comparison diagram of P25 (Deggusa) degrade acetaldehyde effect.
Fig. 2 covers the high power sem photograph on mesoporous crystal titanium dioxide surface for CNT.
The specific embodiment
Embodiment 1: get 40 milliliters of ethanol in beaker, add 5 milliliters of dispersant ethylene glycol, stirred 30 minutes, add Elsinochrome plain 3 again and restrain, stirred 20 minutes.The plain all dissolvings of Elsinochrome back adds four isopropyl alcohol oxygen titaniums, 4 grams, stirs dropwise to add 50 ml waters after one hour.Water droplet adds the back and stirred 12 hours.Changed in the polytetrafluoroethylene (PTFE) crystallization bottle reactant in the beaker over to crystallization 4 days.The reactant of crystallization filters, cleans, dries then.350 ℃ of calcinations 2 hours, get light yellow mesoporous titanium dioxide powder at last.
Embodiment 2: get 50 milliliters in acetone in beaker, add 8 milliliters of isopropyl alcohol dispersants, stirred 30 minutes, add Elsinochrome element, hypocrellin A and hypocrelline B mixture 2 again and restrain, stirred 20 minutes.Mixture all dissolves the back and adds TiCl
45 restrain, and stir dropwise to add 50 ml waters after one hour.Water droplet adds the back and stirred 12 hours.Changed in the polytetrafluoroethylene (PTFE) crystallization bottle reactant in the beaker over to crystallization 6 days.The reactant of crystallization filters, cleans, dries then, at last 300 ℃ of calcinations 4 hours, gets light yellow mesoporous titanium dioxide powder.
Embodiment 3: get 40 milliliters of ethanol in beaker, add 4 milliliters of dispersant ethylene glycol, stirred 30 minutes, the mixture 6 that adds hypocrellin A, hypocrelline B again restrains, and stirs 20 minutes.Hypocrellin A and hypocrelline B mixture all dissolve the back and add four isopropyl alcohol oxygen titaniums, 3 grams, stir dropwise to add 50 ml waters after one hour.Water droplet adds the back and stirred 12 hours.Changed in the polytetrafluoroethylene (PTFE) crystallization bottle reactant in the beaker over to crystallization 3 days.The reactant of crystallization filters, cleans, dries then.At last 400 ℃ of calcinations 6 hours.Get light yellow mesoporous titanium dioxide powder.
Embodiment 4: get 30 milliliters of ethanol in beaker, add 5 milliliters of isopropyl alcohol dispersants, stirred 30 minutes, add GINKGO BILOBA EXTRACT again and kudzu root flavone mixture 2 restrains, stirred 20 minutes.GINKGO BILOBA EXTRACT and kudzu root flavone mixture all dissolve the back and add four isopropyl alcohol oxygen titaniums and Ti (SO
4)
2Mixture 4 restrains, and stirs dropwise to add 50 ml waters after one hour.Water droplet adds the back and stirred 12 hours.Changed in the polytetrafluoroethylene (PTFE) crystallization bottle reactant in the beaker over to crystallization 4 days.The reactant of crystallization filters, cleans, dries then.400 ℃ of calcinations 3 hours, get mesoporous titanium dioxide powder at last.
Embodiment 5: get 40 milliliters of ethanol and acetone mixture in beaker, add 6 milliliters of dispersant ethylene glycol, stirred 30 minutes, add kudzu root flavone 5 again and restrain, stirred 20 minutes.Kudzu root flavone all dissolves the back and adds four isopropyl alcohol oxygen titaniums, 5 grams, stirs dropwise to add 50 ml waters after one hour.Water droplet adds the back and stirred 12 hours.Changed in the polytetrafluoroethylene (PTFE) crystallization bottle reactant in the beaker over to crystallization 7 days.The reactant of crystallization filters, cleans, dries then.400 ℃ of calcinations 4 hours, get mesoporous titanium dioxide powder at last.
Embodiment 6: get 45 milliliters in acetone in beaker, add 5 milliliters of dispersant ethylene glycol, stirred 30 minutes, add rosemary, polyphenol 5 again and restrain, stirred 20 minutes.The rosemary, polyphenol all dissolves the back and adds Ti (SO
4)
25 restrain, and stir dropwise to add 50 ml waters after one hour.Water droplet adds the back and stirred 12 hours.Changed in the polytetrafluoroethylene (PTFE) crystallization bottle reactant in the beaker over to crystallization 7 days.The reactant of crystallization filters, cleans, dries then.450 ℃ of calcinations 8 hours, get mesoporous titanium dioxide powder at last.
Embodiment 7: get 30 milliliters of ethanol in beaker, add 7 milliliters of isopropyl alcohol dispersant and ethylene glycol mixtures, stirred 30 minutes, add imperial tabasheer ketone 3 again and restrain, stirred 20 minutes.Dragon tabasheer ketone all dissolves the back and adds four isopropyl alcohol oxygen titanium and TiO
4Mixture 4 restrains, and stirs dropwise to add 50 ml waters after one hour.Water droplet adds the back and stirred 12 hours.Changed in the polytetrafluoroethylene (PTFE) crystallization bottle reactant in the beaker over to crystallization 4 days.The reactant of crystallization filters, cleans, dries then.400 ℃ of calcinations 6 hours, get mesoporous titanium dioxide powder at last.
Embodiment 8: get 50 milliliters in acetone in beaker, add 8 milliliters of isopropyl alcohol dispersants, stirred 30 minutes, add Hecogenin 5 again and restrain, stirred 20 minutes.Hecogenin all dissolves the back and adds four isopropyl alcohol oxygen titaniums, 4 grams, stirs dropwise to add 50 ml waters after one hour.Water droplet adds the back and stirred 12 hours.Changed in the polytetrafluoroethylene (PTFE) crystallization bottle reactant in the beaker over to crystallization 5 days.The reactant of crystallization filters, cleans, dries, at last 350 ℃ of calcinations 8 hours then.Get mesoporous titanium dioxide powder.
Embodiment 9: get 30 milliliters in ethanol and acetone in beaker, add 4 milliliters of dispersant ethylene glycol, stirred 30 minutes, add the rosemary, polyphenol again and Hecogenin mixture 3 restrains, stirred 20 minutes.Rosemary, polyphenol and Hecogenin mixture all dissolve the back and add TiO
44 restrain, and stir dropwise to add 50 ml waters after one hour.Water droplet adds the back and stirred 12 hours.Changed in the polytetrafluoroethylene (PTFE) crystallization bottle reactant in the beaker over to crystallization 7 days.The reactant of crystallization filters, cleans, dries then.400 ℃ of calcinations 4 hours, get mesoporous titanium dioxide powder at last.
Embodiment 10: get 40 milliliters in ethanol and acetone in beaker, add 8 milliliters of isopropyl alcohol dispersant and ethylene glycol mixtures, stirred 30 minutes, add rosemary, polyphenol, GINKGO BILOBA EXTRACT, kudzu root flavone mixture 3 again and restrain, stirred 20 minutes.Rosemary, polyphenol, GINKGO BILOBA EXTRACT and kudzu root flavone mixture all dissolve the back and add TiO
4And Ti (SO
4)
2Mixture 4 restrains, and stirs dropwise to add 50 ml waters after one hour.Water droplet adds the back and stirred 12 hours.Changed in the polytetrafluoroethylene (PTFE) crystallization bottle reactant in the beaker over to crystallization 3 days.The reactant of crystallization filters, cleans, dries, at last 350 ℃ of calcinations 8 hours then.Get mesoporous titanium dioxide powder.
Embodiment 11: get 30 milliliters in acetone in beaker, add 7 milliliters of isopropyl alcohol dispersants, stirred 30 minutes, add the rosemary, polyphenol again and kudzu root flavone mixture 4 restrains, stirred 20 minutes.Rosemary, polyphenol and kudzu root flavone mixture all dissolve the back and add four isopropyl alcohol oxygen titanium and TiO
4Mixture 4 restrains, and stirs dropwise to add 50 ml waters after one hour.Water droplet adds the back and stirred 12 hours.Changed in the polytetrafluoroethylene (PTFE) crystallization bottle reactant in the beaker over to crystallization 5 days.The reactant of crystallization filters, cleans, dries then.300 ℃ of calcinations 6 hours, get mesoporous titanium dioxide powder at last.
Claims (4)
1, a kind of is the preparation method of the mesoporous crystal titanium dioxide of template with the photosensitive activity thing, it is characterized in that:
(1), to contain the titanium ion alkoxide or to contain the inorganic salts of titanium ion or the mixture of metatitanic acid or above material is the presoma of titanium dioxide, with ethanol or acetone or the mixture of the two is diluent, with ethylene glycol or isopropyl alcohol or the mixture of the two is that dispersant ， Yi perylene naphthoquinone derivatives or other natural extract with photosensitive activity are the photosensitive activity thing;
(2), form the titanium dioxide precursor liquid by following components in part by weight: the presoma 3～15% of titanium dioxide, diluent 65%～90%, dispersant 5%～15%, photosensitive activity thing 1%～5%;
(3), with crystallization after the hydrolysis of titanium dioxide precursor liquid, the presoma of mesoporous TiO 2;
(4), the presoma of mesoporous TiO 2 is carried out sintering, be able to the mesoporous crystal titanium dioxide that the photosensitive activity thing is a template.
2,, it is characterized in that the natural extract that Suo Shu perylene naphthoquinone derivatives or other have a photosensitive activity is Elsinochrome element or hypocrellin A or hypocrelline B or imperial tabasheer ketone or GINKGO BILOBA EXTRACT or kudzu root flavone or Hecogenin or rosemary, polyphenol as the said preparation method of claim 1.
3, as the said preparation method of claim 1, it is characterized in that the crystallization temperature of crystallization is 70～100 ℃ after the hydrolysis of titanium dioxide precursor liquid, crystallization time is 3～7 days.
4, as the said preparation method of claim 1, the temperature that the presoma that it is characterized in that mesoporous TiO 2 carries out sintering is 300 ℃～500 ℃, and sintering time is 2h～8h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100657475A CN100484620C (en) | 2007-03-26 | 2007-03-26 | Method for preparing mesoporous crystal titanium dioxide using light-sensitive active matter as template |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100657475A CN100484620C (en) | 2007-03-26 | 2007-03-26 | Method for preparing mesoporous crystal titanium dioxide using light-sensitive active matter as template |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101024169A CN101024169A (en) | 2007-08-29 |
| CN100484620C true CN100484620C (en) | 2009-05-06 |
Family
ID=38742995
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007100657475A Active CN100484620C (en) | 2007-03-26 | 2007-03-26 | Method for preparing mesoporous crystal titanium dioxide using light-sensitive active matter as template |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100484620C (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101745376A (en) * | 2009-11-20 | 2010-06-23 | 云南大学 | Mesoporous metal oxide photocatalyst preparation method taking plant latex as template |
| CN102755711B (en) * | 2011-04-29 | 2016-03-30 | 云南大学 | A kind of Green Destruction technique of high concentration strong acid (alkali) precursor chemicals |
| CN102826707A (en) * | 2011-06-16 | 2012-12-19 | 云南大学 | Three-stage tandem photocatalysis treatment technology of marigold wastewater |
| CN103007977B (en) * | 2012-12-25 | 2014-10-29 | 济南大学 | Preparation method of modified TiO2 with visible light response |
| CN103691414B (en) * | 2013-12-02 | 2015-06-10 | 南京倍立达新材料系统工程股份有限公司 | Preparation method of high-stability neutral photocatalyst sol for cement-based material |
| CN103816882B (en) * | 2014-02-19 | 2016-01-27 | 福州大学 | Spherical anatase titania photochemical catalyst of a kind of micron and preparation method thereof |
| CN104984765A (en) * | 2015-07-13 | 2015-10-21 | 山东晟博生物科技有限公司 | Efficient photo catalytic oxidant and preparation method thereof |
| CN106582605B (en) * | 2016-11-10 | 2019-12-24 | 云南大学 | Method for preparing cerium ion-doped mesoporous titanium dioxide photocatalyst by using lutein photosensitive active substance as template |
| CN107359252A (en) * | 2017-06-07 | 2017-11-17 | 常州市瑞泰物资有限公司 | A kind of preparation method of crystal isotypy perovskite thin film |
| CN111838184A (en) * | 2020-08-04 | 2020-10-30 | 云南中烟工业有限责任公司 | Method for synthesizing inorganic antibacterial material by using natural plants as raw materials and application |
| CN112080118B (en) * | 2020-09-29 | 2022-09-09 | 中星中大印刷（深圳）有限公司 | Degradable polylactic acid plastic |
| CN115025766B (en) * | 2022-05-07 | 2023-07-28 | 西南林业大学 | Co-doped mesoporous titanium dioxide/carbon nanotube catalyst and preparation method thereof |
-
2007
- 2007-03-26 CN CNB2007100657475A patent/CN100484620C/en active Active
Non-Patent Citations (2)
| Title |
|---|
| 第二代光催化剂-可见光催化剂的研究进展. 王家强，李俊杰.化工科技市场，第29卷第1期. 2006 |
| 第二代光催化剂-可见光催化剂的研究进展. 王家强，李俊杰.化工科技市场，第29卷第1期. 2006 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101024169A (en) | 2007-08-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100484620C (en) | Method for preparing mesoporous crystal titanium dioxide using light-sensitive active matter as template | |
| Piątkowska et al. | C-, N-and S-doped TiO2 photocatalysts: a review | |
| Hou et al. | Photocatalytic degradation of methylene blue over TiO2 pretreated with varying concentrations of NaOH | |
| Xiao et al. | Visible-light photocatalytic ozonation using graphitic C3N4 catalysts: a hydroxyl radical manufacturer for wastewater treatment | |
| Shah et al. | A review on catalytic nanomaterials for volatile organic compounds VOC removal and their applications for healthy buildings | |
| Yin et al. | Synthesis and photocatalytic properties of fibrous titania prepared from protonic layered tetratitanate precursor in supercritical alcohols | |
| Colmenares et al. | Nanostructured photocatalysts and their applications in the photocatalytic transformation of lignocellulosic biomass: an overview | |
| Ding et al. | Novel silica gel supported TiO2 photocatalyst synthesized by CVD method | |
| Li et al. | Highly active TiO2N photocatalysts prepared by treating TiO2 precursors in NH3/ethanol fluid under supercritical conditions | |
| Ma et al. | Ligand-metal charge transfer mechanism enhances TiO2/Bi2WO6/rGO nanomaterials photocatalytic efficient degradation of norfloxacin under visible light | |
| Zhang et al. | Switching oxygen reduction pathway by exfoliating graphitic carbon nitride for enhanced photocatalytic phenol degradation | |
| Li et al. | Role of surface/interfacial Cu2+ sites in the photocatalytic activity of coupled CuO− TiO2 nanocomposites | |
| Primo et al. | Efficient visible-light photocatalytic water splitting by minute amounts of gold supported on nanoparticulate CeO2 obtained by a biopolymer templating method | |
| Li et al. | Brookite vs anatase TiO2 in the photocatalytic activity for organic degradation in water | |
| Tian et al. | Hydrothermal synthesis of graphitic carbon nitride–Bi2WO6 heterojunctions with enhanced visible light photocatalytic activities | |
| Yu et al. | Hydrothermal synthesis and photocatalytic activity of zinc oxide hollow spheres | |
| Natarajan et al. | Nitrogen doped titanium dioxide (N-TiO2): synopsis of synthesis methodologies, doping mechanisms, property evaluation and visible light photocatalytic applications | |
| Feng et al. | Improved catalytic capability of mesoporous TiO2 microspheres and photodecomposition of toluene | |
| Qin et al. | One-step fabrication of TiO2/Ti foil annular photoreactor for photocatalytic degradation of formaldehyde | |
| Yang et al. | Preparation and photocatalytic activities of TiO2-based composite catalysts | |
| Ücker et al. | Influence of Nb2O5 crystal structure on photocatalytic efficiency | |
| Mohd Kaus et al. | Effective strategies, mechanisms, and photocatalytic efficiency of semiconductor nanomaterials incorporating rGO for environmental contaminant degradation | |
| Li et al. | Preparation, characterization of graphitic carbon nitride photo-catalytic nanocomposites and their application in wastewater remediation: a review | |
| Porcu et al. | Advances in hybrid composites for photocatalytic applications: A review | |
| Mahy et al. | Eco-friendly colloidal aqueous sol-gel process for TiO2 synthesis: the peptization method to obtain crystalline and photoactive materials at low temperature |
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 |