CN1712128A - Production of nitrogen-doped anatase-type nanometer titanium dioxide - Google Patents
Production of nitrogen-doped anatase-type nanometer titanium dioxide Download PDFInfo
- Publication number
- CN1712128A CN1712128A CN 200510011665 CN200510011665A CN1712128A CN 1712128 A CN1712128 A CN 1712128A CN 200510011665 CN200510011665 CN 200510011665 CN 200510011665 A CN200510011665 A CN 200510011665A CN 1712128 A CN1712128 A CN 1712128A
- Authority
- CN
- China
- Prior art keywords
- titanium
- source
- nitrogen
- precipitating reagent
- titanium dioxide
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Abstract
A process for preparing the nitrogen doped anatase-type TiO2 by hydrothermal synthesis includes such steps as proportionally mixing Ti source, precipitant, nitrogen source and water, loading in high-pressure reactor with teflon liner, hydrothermal reacting, alcohol washing, water washing, and drying.
Description
Technical field
The invention belongs to the titanium dioxide powder preparing technical field, a kind of preparation method of nitrogen-doped anatase-type nanometer titanium dioxide particularly is provided, be applicable to and do photocatalyst material.
Background technology
1972, Japanese scholar A.Fujishima and K.Honda were at n type semiconductor TiO
2Found the photoelectrocatalysis decomposition of water on the electrode.From that time, nano-TiO
2As a kind of semiconductor light-catalyst, caused research interest more and more widely in solar energy conversion and aspects such as storage, harmful complicated organic matter degradation.Photochemical catalyst is exactly in beche-de-mer without spike and the following catalyst for reaction that takes place, and works as TiO
2Be subjected to greater than TiO
2When the light of energy gap width shone, internal electron will be energized, and has an effect with the oxygen and the hydrone of air, produces the hole of electronegative electronics and positively charged.Electronics makes the hydrogen reduction in air or the water, generate hydrogen peroxide, then work to the direction of oxidized surface hydrone in the hole, produce negative oxygen ion and (hydroxyl) basic atomic group, these all are active oxygens, powerful oxidative decomposition capacity is arranged, produce strong redox reaction thus, the organic matter that is attached to the surface is resolved into water and carbon dioxide.Titanium dioxide not only has powerful oxidative decomposition capacity, and the advantages such as light of self not decomposing, almost can permanently work and can utilize sunlight and fluorescent lamp in addition.Nano-TiO
2As the function catalysis material of excellent performance, carried out the degraded of formaldehyde in indoor air, ammonia, benzene class pernicious gas etc., performance purifies air, the function of organic pollution, antibacterial and mouldproof in the degradation water.Nano-TiO
2Belong to non-dissolution type photochemical catalyst, safety non-toxic own, content of beary metal is few.So use this nano-TiO
2During the photochemical catalyst functional stuffing, there are not any medicine stripping or volatilization, nontoxic to environment, human body is not produced harmful effect, be the environment-friendly materials of safe and reliable antibiotic scrubbing.
But, TiO
2Energy gap broad (Eg=3.2ev), have only ultraviolet ray to be absorbed as wavelength 1＜387.5nm, but this part ultraviolet ray in the sunshine (300～400nm) only account for and reach 4～6% of solar energy on the ground, and the sunshine utilization rate is low.In addition, from antibiotic mechanism, the number of free radical that antimicrobial efficiency and antibacterial ability and system produce is closely related, and number of free radical is then relevant with photoproduction carrier concentration.Promptly can separate after electronics and hole produce with compound, the high more photocatalysis influence to titanium dioxide of its recombination rate is big more.Therefore, improve the photocatalytic activity of titanium dioxide, most important two aspects are exactly the forbidden band and suppress right compound of electrons/of narrowing.One of main path that solves these two problems is exactly to mix at present.People are carrying out a large amount of research aspect the optically catalytic TiO 2 doping, the transition metal that mixed, rare earth metal etc., and these catalyst are reducing band gap, expansion TiO
2The aspect of photoresponse scope certain progress has been arranged.The TiO of metal/metal oxide or metal ion mixing
2Though, can significantly reduce the band gap energy level, realized exciting of visible light, because the characteristic of metal/metal oxide no matter these doped chemicals are as interstitial atom, is still replaced lattice atoms, in fact all be at TiO
2Crystal grain in set up good electron/hole-recombination point position, in most cases carrier is separating, is catching, moving and is being diffused in the surface process, almost most of acted on by these some positions compound, though TiO
2Visible light activity has been arranged, but significantly reduced TiO simultaneously
2In the activity of ultraviolet light photocatalysis, and there are some researches show that the bad ultraviolet light photocatalysis activity that causes of heat endurance of cation doping reduces.Asahi is at Science (R.Asahi, T.Morikawa, T.Ohwahi, K.Aoki, Y.Taga.Visible-Light Photocatalysis in Nitrogen-Doped Titanium Oxides, Science, 2001,293:269～217.) reported the Lattice Oxygen that nitrogen substitutes a small amount of (0.75%) on and can make TiO
2Band gap narrow down, not reducing the photoactive while of ultraviolet, make TiO
2Has visible light activity.But technology such as the doping that Asahi mentions employing ion injection are carried out at titanium dioxide film materials.Songwang Yang (Songwang Yang, et al.NewMethod to Prepare Nitrogen-Doped Titanium Dioxide and Its Photocatalytic ActivitiesIrradiated by Visible Light.J.Am.Ceram.Soc., 2004 (87): 1803-1805.) wait with doping process and TiO
2Crystallization process is simultaneously at NH
3Carry out in the atmosphere, effectively nitrogen-atoms is incorporated into TiO
2In the lattice.They with the mixed liquor of butyl titanate, thiocarbamide and ethanol behind the drying and dehydrating under the reducing atmosphere after the temperature of hundreds of Celsius under the NH3 atmosphere is heat-treated, obtain nitrating TiO
2Powder.But this technology exists and reunites and inhomogeneity problem because will experience pyroprocess.
Summary of the invention
The object of the present invention is to provide a kind of preparation method of nitrogen-doped anatase-type nanometer titanium dioxide, the technical problem of solution is synthetic preparation and the nitrogen doping method that proposes a kind of synchronous anatase-type nanometer titanium dioxide.
The present invention adopts hydrothermal synthesis method, titanium source, precipitating reagent, doping nitrogen source and water are mixed and made into the mixed solution system by a certain percentage, change over to then in the band teflon-lined autoclave and carry out hydrothermal synthesis reaction, obtain Detitanium-ore-type nitrogen-doped nanometer titanium dioxide powder.
Hydrothermal synthesizing condition is: temperature is 80 ℃～200 ℃, and temperature retention time is: 1～24 hour, pressure was 0.1MPa～15MPa, 200～1000 rev/mins of mixing speeds.
It is synthetic that this law is carried out hydro-thermal under these conditions, washes, is washed to neutrality through alcohol at last, through super-dry, promptly obtains polymolecularity nitrogen-doped nanometer titanium dioxide powder.
Water of the present invention is deionized water.Described titanium source is: one or both in titanyl sulfate, titanium sulfate, metatitanic acid four fourth fat, titanium tetrachloride, metatitanic acid formicester, metatitanic acid second fat, the metatitanic acid isopropyl ester and above combination thereof.The molar concentration in titanium source is 0.05M～2M, is preferably 0.5～1M.Described precipitating reagent is urea, ammoniacal liquor, NaOH, (NH
4)
2SO
4The atomic ratio of precipitating reagent and titanium ion is 0.5: 1～8: 1, is preferably 1: 1～4: 1.Described nitrogenous source is: one or both in ethamine, thiocarbamide, methylamine, guanidine hydrochloride, urea, the amine carbonate and above combination thereof.The molar concentration of nitrogenous source is 0.5M～6M, preferred 1M～3M.
The performance characterization of prepared nitrogen-doped nanometer titanium dioxide comprises: X-ray diffraction (XRD) is measured phase structure, thing phase composition and grain size size.Adopt photoelectron spectroscopy (XPS) to measure nitrogen doping situation.Adopt the specific area of determination of nitrogen adsorption titanium dioxide.Adopt ultraviolet-visible spectrophotometer to measure absorption spectrum.
The invention has the advantages that: prepared nano-TiO
2The powder grain size is controlled, specific area is high and be the anatase phase.
Description of drawings
Fig. 1 is the XRD figure spectrum of embodiment 1 prepared powder.Wherein, abscissa is an angle of diffraction, and ordinate is a diffracted intensity.
Fig. 2 is the TEM photo of the powder due to the embodiment 3.
Fig. 3 is the XRD figure spectrum of embodiment 10.Wherein, abscissa is an angle of diffraction, and ordinate is a diffracted intensity.
Fig. 4 is the ultraviolet-visible light reflectogram of embodiment 8.Wherein, abscissa is a wavelength, and ordinate is a reflectivity.
The specific embodiment
Embodiment 1
With 1.3L deionization water as solvent, the technical grade TiOSO of 0.25M
4Solution is made presoma, and the urea that adds 0.5M is made precipitating reagent, adds the 1.3L deionized water down at 25 ℃, make their dissolvings with mechanical agitation, at initial pressure 6MPa, mixing speed is under the 300r/min condition in autoclave, be incubated 2h down at 110 ℃, the back uses the distilled water suction filtration extremely with Ba (NO
3)
2Solution detects less than SO
4 2-Behind the ion, wash 5-8 time, then 60 ℃ of following drying with water baths 12 hours with absolute ethyl alcohol.
Embodiment 2
With deionized water be] solvent, with the technical grade TiOSO of 0.25M
4Solution is made presoma, and the urea that adds 0.5M is made precipitating reagent, liquor capacity 1.3L, make their dissolvings with mechanical agitation under 25 ℃, at initial pressure 6MPa, mixing speed is under the 300r/min condition in autoclave, be incubated 24h down at 110 ℃, the back uses the distilled water suction filtration extremely with Ba (NO
3)
2Solution detects less than SO
4 2-Behind the ion, wash 5-8 time, then 60 ℃ of following drying with water baths 12 hours with absolute ethyl alcohol.
Embodiment 3
Presoma technical grade TiOSO
4Be respectively 0.25M and 0.5M with the concentration of precipitating reagent urea, adding deionized water makes liquor capacity 1.3L add deionized water down at 25 ℃, make their dissolvings with mechanical agitation, in the autoclave of 2L at initial pressure 6MPa, mixing speed is under the 300r/min condition, be incubated 8h down at 110 ℃, the back uses the distilled water suction filtration extremely with Ba (NO
3)
2Solution detects less than SO
4 2-Behind the ion, wash 5-8 time, then 60 ℃ of following drying with water baths 12 hours with absolute ethyl alcohol.
Embodiment 4
Ti (SO with 1M
4)
2Solution is made presoma, and the ammoniacal liquor that adds 2M is made precipitating reagent, adds the 1.3L deionized water down at 25 ℃, make their dissolvings with mechanical agitation, at initial pressure 6MPa, mixing speed is under the 300r/min condition in autoclave, be incubated 8h down at 150 ℃, the back uses the distilled water suction filtration extremely with Ba (NO
3)
2Solution detects less than SO
4 2-Behind the ion, wash 5-8 time, then 60 ℃ of following drying with water baths 12 hours with absolute ethyl alcohol.
Embodiment 5
TiCl with 1M
4Solution is made presoma, and the ammonium sulfate that adds 2M is made precipitating reagent, adds the 1.3L deionized water down at 25 ℃, make their dissolvings with mechanical agitation, at initial pressure 6MPa, mixing speed is under the 300r/min condition in autoclave, be incubated 4h down at 150 ℃, the back uses the distilled water suction filtration extremely with Ba (NO
3)
2Solution detects less than SO
4 2-Behind the ion, wash 5-8 time, then 60 ℃ of following drying with water baths 12 hours with absolute ethyl alcohol.
Embodiment 6
Technical grade TiOSO with 1M
4Solution is made presoma, and the ammoniacal liquor that adds 2M is made precipitating reagent, adds the 1.3L deionized water down at 25 ℃, makes their dissolvings with mechanical agitation, regulates pH value to 2 with NaOH.At initial pressure 6MPa, mixing speed is under the 300r/min condition in autoclave, is incubated 8h down at 180 ℃, and the back uses the distilled water suction filtration extremely with Ba (NO
3)
2Solution detects less than SO
4 2-Behind the ion, wash 5-8 time, then 60 ℃ of following drying with water baths 12 hours with absolute ethyl alcohol.
Embodiment 7
TiOSO with 1M
4Solution is made presoma, and the ammoniacal liquor that adds 2M is made precipitating reagent, adds the 1.3L deionized water down at 25 ℃, makes their dissolvings with mechanical agitation, regulates pH value to 2 with NaOH.At initial pressure 6MPa, mixing speed is under the 900r/min condition in autoclave, is incubated 24h down at 180 ℃, and the back uses the distilled water suction filtration extremely with Ba (NO
3)
2Solution detects less than SO
4 2-Behind the ion, wash 5-8 time, then 60 ℃ of following drying with water baths 12 hours with absolute ethyl alcohol.
Embodiment 8: nitrating
Respectively with the TiCl of 1M
4Make titanium source and nitrogenous source with the 2M ethylamine solution, the urea that adds 2M is made precipitating reagent, adding appropriate amount of deionized water, to make the mixed liquor cumulative volume be 1.3L (autoclave inner bag volume 75%), adopt mechanical agitation that mixed liquor is mixed under the room temperature, in autoclave at initial pressure 6MPa, mixing speed is under the 300r/min condition, is incubated 10h down at 100 ℃, and the back uses the distilled water suction filtration extremely with Ba (NO
3)
2Solution detects less than SO
4 2-Behind the ion, wash 5-8 time, then 60 ℃ of following drying with water baths 12 hours with absolute ethyl alcohol.
Embodiment 9: nitrating
Respectively with the TiOSO of 1M
4Make titanium source and nitrogenous source with the 2M thiourea solution, the urea that adds 2M is made precipitating reagent, adding appropriate amount of deionized water, to make the mixed liquor cumulative volume be 1.3L (autoclave inner bag volume 75%), adopt mechanical agitation that mixed liquor is mixed under the room temperature, in autoclave at initial pressure 4MPa, mixing speed is under the 500r/min condition, is incubated 3h down at 180 ℃, and the back uses the distilled water suction filtration extremely with Ba (NO
3)
2Solution detects less than SO
4 2-Behind the ion, wash 5-8 time, then 60 ℃ of following drying with water baths 16 hours with absolute ethyl alcohol.
Embodiment 10: nitrating
Respectively with the TiOSO of 1M
4Make titanium source and nitrogenous source with the 3M guanidine hydrochloride solution, the urea that adds 1.5M is made precipitating reagent, adding appropriate amount of deionized water, to make the mixed liquor cumulative volume be 1.3L (autoclave inner bag volume 75%), adopt mechanical agitation that mixed liquor is mixed under the room temperature, in autoclave at initial pressure 8MPa, mixing speed is under the 600r/min condition, is incubated 3h down at 140 ℃, and the back uses the distilled water suction filtration extremely with Ba (NO
3)
2Solution detects less than SO
4 2-Behind the ion, wash 5-8 time, then 60 ℃ of following drying with water baths 10 hours with absolute ethyl alcohol.
The specific area of table 1: embodiment 1 and embodiment 3 gained powders is by its equivalent diameter of calculating
| Example 1 | Example 5 | Example 9 | Example 8 | Example 10 | |
| Specific area (m 2/g) | ??226.6 | ??124.7 | ??122.071 | ??205.835 | ??144.915 |
| Equivalent spherical diameter (nm) | ??6.9 | ??12.5 | ??12.8 | ??205.835 | ??10.8 |
Claims (3)
1, a kind of preparation method of nitrogen-doped anatase-type nanometer titanium dioxide, it is characterized in that: adopt hydrothermal synthesis method, titanium source, precipitating reagent, doping nitrogen source and water are mixed and made into the mixed solution system in proportion, change over to then in the band teflon-lined autoclave and carry out hydrothermal synthesis reaction, wash, be washed to neutrality through alcohol at last, through super-dry, obtain Detitanium-ore-type nitrogen-doped nanometer titanium dioxide powder; Hydrothermal synthesizing condition is: temperature is 80 ℃～200 ℃, and temperature retention time is: 1～24 hour, pressure was 0.1MPa～15MPa, 200～1000 rev/mins of mixing speeds.
2, in accordance with the method for claim 1, it is characterized in that: the water that is adopted is deionized water; Described titanium source is: one or both in titanyl sulfate, titanium sulfate, metatitanic acid four fourth fat, titanium tetrachloride, metatitanic acid formicester, metatitanic acid second fat, the metatitanic acid isopropyl ester and above combination thereof; The molar concentration in titanium source is 0.05M～2M; Described precipitating reagent is urea, ammoniacal liquor, NaOH, (NH
4)
2SO
4The atomic ratio of precipitating reagent and titanium ion is 0.5: 1～8: 1; Described nitrogenous source is: one or both in ethamine, thiocarbamide, methylamine, guanidine hydrochloride, urea, the amine carbonate and above combination thereof; The molar concentration of nitrogenous source is 0.5M～6M.
3, according to claim 1 or 2 described methods, it is characterized in that: the molar concentration in titanium source is 0.5～1M; The atomic ratio of precipitating reagent and titanium ion is 1: 1～4: 1; The molar concentration of nitrogenous source is 1M～3M.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100116653A CN1321738C (en) | 2005-04-29 | 2005-04-29 | Production of nitrogen-doped anatase-type nanometer titanium dioxide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100116653A CN1321738C (en) | 2005-04-29 | 2005-04-29 | Production of nitrogen-doped anatase-type nanometer titanium dioxide |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1712128A true CN1712128A (en) | 2005-12-28 |
| CN1321738C CN1321738C (en) | 2007-06-20 |
Family
ID=35718030
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100116653A Expired - Fee Related CN1321738C (en) | 2005-04-29 | 2005-04-29 | Production of nitrogen-doped anatase-type nanometer titanium dioxide |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1321738C (en) |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102350369A (en) * | 2011-08-18 | 2012-02-15 | 辽宁大学 | Nitrogen/fluorine-doped titanium dioxide photocatalyst and application thereof in degrading organic pollutants under visible light |
| CN102824905A (en) * | 2012-09-20 | 2012-12-19 | 中国科学院新疆理化技术研究所 | Nitrogen-titanium dioxide/bismuth trioxide ternary compound photocatalysis material as well as preparation method and application thereof |
| CN101757662B (en) * | 2010-01-14 | 2013-04-24 | 广州三瑞环保科技有限公司 | Nano TiO2 emulsion, synthesis method thereof and use thereof |
| CN103121711A (en) * | 2012-11-23 | 2013-05-29 | 浙江工业大学 | Preparation method of nano titanium dioxide powder with full-anatase structure |
| CN103831078A (en) * | 2012-11-27 | 2014-06-04 | 张加艳 | Preparation method of heavy metal ion adsorbent |
| CN104251400A (en) * | 2013-06-26 | 2014-12-31 | 江南大学 | Indoor LED (Light Emitting Diode) lighting lamp with photo-catalytic effect |
| CN104261469A (en) * | 2014-10-21 | 2015-01-07 | 福州大学 | Titanium dioxide as well as preparation method and application thereof |
| CN104475070A (en) * | 2014-11-03 | 2015-04-01 | 东北林业大学 | Preparation method for mesoporous hollow spherical TiO2 having high visible light catalysis performance |
| CN105597721A (en) * | 2015-12-21 | 2016-05-25 | 景德镇陶瓷学院 | Preparation method of anatase TiO2 nanomaterial with high photocatalytic activity and product prepared from anatase TiO2 nanomaterial with high photocatalytic activity |
| CN107812453A (en) * | 2017-10-31 | 2018-03-20 | 石狮市川大先进高分子材料研究中心 | A kind of preparation method of the biodegradable water-oil separationg film of multifunctional application |
| CN107983384A (en) * | 2016-10-26 | 2018-05-04 | 中国科学院福建物质结构研究所 | A kind of N doping TiO2- C-material, its preparation method and application |
| CN108940249A (en) * | 2018-06-29 | 2018-12-07 | 西安建筑科技大学 | A kind of composite photo-catalyst, preparation method and applications |
| CN109746020A (en) * | 2019-01-16 | 2019-05-14 | 浙江理工大学 | A kind of preparation method of nitrogen-doped titanium dioxide of the surface with high energy crystal face |
| CN109821524A (en) * | 2019-03-22 | 2019-05-31 | 南京森之语新材料科技有限公司 | A kind of preparation method with light degradation organic toxic gas multi-stage nano composite material |
| CN114015326A (en) * | 2021-12-13 | 2022-02-08 | 成都正蓉王牌办公家具有限公司 | Formaldehyde-removing environment-friendly new material and preparation method thereof |
| US11577224B2 (en) | 2018-05-01 | 2023-02-14 | Hamilton Sundstrand Corporation | Gas treatment method and materials |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3829183B2 (en) * | 2002-03-18 | 2006-10-04 | 独立行政法人産業技術総合研究所 | Photocatalyst and method for producing the same |
| CN1230572C (en) * | 2002-10-23 | 2005-12-07 | 中国科学院化学研究所 | Method for forming heteronitrogen nano TiO2 light catalytic activity coating on substrate |
| CN1506154A (en) * | 2002-12-06 | 2004-06-23 | 中国科学院化学研究所 | Prepn of nitrogen-doped titania powder |
| CN1507943A (en) * | 2002-12-17 | 2004-06-30 | 上海大学 | Method for preparing photocatalytic material sensitive to visible light |
| US7211513B2 (en) * | 2003-07-01 | 2007-05-01 | Pilkington North America, Inc. | Process for chemical vapor desposition of a nitrogen-doped titanium oxide coating |
| CN1257013C (en) * | 2004-06-03 | 2006-05-24 | 上海交通大学 | Preparing method for nitrogen extended titania light catalyst |
-
2005
- 2005-04-29 CN CNB2005100116653A patent/CN1321738C/en not_active Expired - Fee Related
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101757662B (en) * | 2010-01-14 | 2013-04-24 | 广州三瑞环保科技有限公司 | Nano TiO2 emulsion, synthesis method thereof and use thereof |
| CN102350369A (en) * | 2011-08-18 | 2012-02-15 | 辽宁大学 | Nitrogen/fluorine-doped titanium dioxide photocatalyst and application thereof in degrading organic pollutants under visible light |
| CN102824905A (en) * | 2012-09-20 | 2012-12-19 | 中国科学院新疆理化技术研究所 | Nitrogen-titanium dioxide/bismuth trioxide ternary compound photocatalysis material as well as preparation method and application thereof |
| CN103121711A (en) * | 2012-11-23 | 2013-05-29 | 浙江工业大学 | Preparation method of nano titanium dioxide powder with full-anatase structure |
| CN103121711B (en) * | 2012-11-23 | 2016-03-09 | 浙江工业大学 | The preparation method of complete anatase structured nano-titanium dioxide powder |
| CN103831078A (en) * | 2012-11-27 | 2014-06-04 | 张加艳 | Preparation method of heavy metal ion adsorbent |
| CN104251400A (en) * | 2013-06-26 | 2014-12-31 | 江南大学 | Indoor LED (Light Emitting Diode) lighting lamp with photo-catalytic effect |
| CN104261469A (en) * | 2014-10-21 | 2015-01-07 | 福州大学 | Titanium dioxide as well as preparation method and application thereof |
| CN104261469B (en) * | 2014-10-21 | 2015-11-18 | 福州大学 | A kind of titanium dioxide and its preparation method and application |
| CN104475070A (en) * | 2014-11-03 | 2015-04-01 | 东北林业大学 | Preparation method for mesoporous hollow spherical TiO2 having high visible light catalysis performance |
| CN105597721A (en) * | 2015-12-21 | 2016-05-25 | 景德镇陶瓷学院 | Preparation method of anatase TiO2 nanomaterial with high photocatalytic activity and product prepared from anatase TiO2 nanomaterial with high photocatalytic activity |
| CN107983384A (en) * | 2016-10-26 | 2018-05-04 | 中国科学院福建物质结构研究所 | A kind of N doping TiO2- C-material, its preparation method and application |
| CN107983384B (en) * | 2016-10-26 | 2019-11-26 | 中国科学院福建物质结构研究所 | A kind of N doping TiO2C-material, preparation method and application |
| CN107812453A (en) * | 2017-10-31 | 2018-03-20 | 石狮市川大先进高分子材料研究中心 | A kind of preparation method of the biodegradable water-oil separationg film of multifunctional application |
| US11577224B2 (en) | 2018-05-01 | 2023-02-14 | Hamilton Sundstrand Corporation | Gas treatment method and materials |
| CN108940249A (en) * | 2018-06-29 | 2018-12-07 | 西安建筑科技大学 | A kind of composite photo-catalyst, preparation method and applications |
| CN109746020A (en) * | 2019-01-16 | 2019-05-14 | 浙江理工大学 | A kind of preparation method of nitrogen-doped titanium dioxide of the surface with high energy crystal face |
| CN109821524A (en) * | 2019-03-22 | 2019-05-31 | 南京森之语新材料科技有限公司 | A kind of preparation method with light degradation organic toxic gas multi-stage nano composite material |
| CN109821524B (en) * | 2019-03-22 | 2021-12-10 | 南京森之语新材料科技有限公司 | Preparation method of photo-degradable organic toxic gas multistage nano composite material |
| CN114015326A (en) * | 2021-12-13 | 2022-02-08 | 成都正蓉王牌办公家具有限公司 | Formaldehyde-removing environment-friendly new material and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1321738C (en) | 2007-06-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1321738C (en) | Production of nitrogen-doped anatase-type nanometer titanium dioxide | |
| CN101422725B (en) | Preparation method and use of visible light responsive nitrogen-doped titanium dioxide nano-tube | |
| CN111921550B (en) | MXene/titanium dioxide nanotube composite photocatalyst and preparation method thereof | |
| CN102600880B (en) | Preparation method of visible light-response titanium dioxide photocatalytic liquid | |
| CN111420668B (en) | In-situ synthesis of alpha-Bi2O3/CuBi2O4Preparation method and application of heterojunction photocatalytic material | |
| CN108067267B (en) | Visible light response cadmium telluride/titanium dioxide Z-type photocatalyst and preparation method and application thereof | |
| CN110721698B (en) | Bismuth vanadate/copper vanadate composite photocatalyst and preparation method and application thereof | |
| CN112023938B (en) | Bimetallic ion doped nano composite photocatalyst and preparation method thereof | |
| Fang et al. | Ternary heterojunction stabilized photocatalyst of Co-TiO2/g-C3N4 in boosting sulfite oxidation during wet desulfurization | |
| CN102500405B (en) | Cerium, nitrogen and fluoride co-doped titanium dioxide photocatalyst and application thereof in degrading organic pollutants in visible light | |
| CN112536049A (en) | Bi2Se3And TiO2Nano composite material and preparation method and application thereof | |
| Jayaraman et al. | Facile preparation of bismuth vanadate-sheet/carbon nitride rod-like interface photocatalyst for efficient degradation of model organic pollutant under direct sunlight irradiation | |
| CN1257013C (en) | Preparing method for nitrogen extended titania light catalyst | |
| Cho et al. | Enhanced photocatalytic activity of TiO2 nanotubes decorated with erbium and reduced graphene oxide | |
| Zhang et al. | Fabrication and study of a novel TiO2/g-C3N5 material and photocatalytic properties using methylene blue and tetracycline under visible light | |
| CN105435763A (en) | Composite photocatalyst SiO2/CNI and preparation method and application thereof | |
| CN111514873B (en) | High-entropy oxide/TiO2Preparation method of composite photocatalyst | |
| CN1555913A (en) | Preparaton method of photo catalytic active nitrogen adulterated titanium dioxide nano material | |
| CN110560106A (en) | Preparation method of bismuth phosphate-cadmium sulfide nanorod composite visible-light-driven photocatalyst | |
| CN112007663B (en) | MoS2@CrOx/La,Al-SrTiO3/CoOOH photocatalyst and preparation method thereof | |
| Gu et al. | Facile synthesis of hierarchical BiOCl x Br1–x solid solution with enhanced photocatalytic activity | |
| CN112371117A (en) | High-dispersion ruthenium-loaded surface-modified layered titanate nanosheet photocatalyst, and preparation method and application thereof | |
| Lin et al. | Preparation and enhanced photocatalytic performance of N-TiO2/g-C3N4 heterostructure for Rhodamine B degradation | |
| CN100391596C (en) | Prepn process of efficient visible light photocatalyst and photoelectric conversion and luminescent material TiOxNyCz | |
| CN112156804B (en) | MQDs/NCDs/TiO2Composite material, composite catalytic system and method for improving degradation efficiency of organic pollutants |
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 | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Gongyi Tongda Zhongyuan Refractory Technology Co., Ltd. Assignor: University of Science and Technology Beijing Contract fulfillment period: 2009.2.10 to 2019.2.10 Contract record no.: 2009110000110 Denomination of invention: Production of nitrogen-doped anatase-type nanometer titanium dioxide Granted publication date: 20070620 License type: General permission Record date: 20090520 |
|
| LIC | Patent licence contract for exploitation submitted for record |
Free format text: COMMON LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2009.2.10 TO 2019.2.10; CHANGE OF CONTRACT Name of requester: GONGYI TONGDA ZHONGYUAN REFRACTORY TECHNOLOGY CO., Effective date: 20090520 |
|
| EC01 | Cancellation of recordation of patent licensing contract |
Assignee: Gongyi Tongda Zhongyuan Refractory Technology Co., Ltd. Assignor: University of Science and Technology Beijing Contract record no.: 2009110000110 Date of cancellation: 20120608 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070620 Termination date: 20210429 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |