CN113042023A - Preparation method of dielectric barrier discharge modified titanium dioxide - Google Patents
Preparation method of dielectric barrier discharge modified titanium dioxide Download PDFInfo
- Publication number
- CN113042023A CN113042023A CN202110313812.1A CN202110313812A CN113042023A CN 113042023 A CN113042023 A CN 113042023A CN 202110313812 A CN202110313812 A CN 202110313812A CN 113042023 A CN113042023 A CN 113042023A
- Authority
- CN
- China
- Prior art keywords
- dielectric barrier
- barrier discharge
- titanium dioxide
- plasma reactor
- discharge plasma
- 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.)
- Pending
Links
- 230000004888 barrier function Effects 0.000 title claims abstract description 55
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical class [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 title claims abstract description 22
- 238000002360 preparation method Methods 0.000 title claims abstract description 11
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 57
- 239000007789 gas Substances 0.000 claims abstract description 22
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims abstract description 18
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000001257 hydrogen Substances 0.000 claims abstract description 11
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 11
- 229910052786 argon Inorganic materials 0.000 claims abstract description 9
- 238000003860 storage Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 4
- 239000004408 titanium dioxide Substances 0.000 abstract description 24
- 239000011148 porous material Substances 0.000 abstract description 4
- 239000003054 catalyst Substances 0.000 abstract description 3
- 230000031700 light absorption Effects 0.000 abstract description 3
- 208000028659 discharge Diseases 0.000 description 41
- 238000005516 engineering process Methods 0.000 description 8
- 230000001699 photocatalysis Effects 0.000 description 8
- 230000003197 catalytic effect Effects 0.000 description 5
- 230000007613 environmental effect Effects 0.000 description 5
- 230000004048 modification Effects 0.000 description 5
- 238000012986 modification Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 238000007146 photocatalysis Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 238000003912 environmental pollution Methods 0.000 description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 2
- 238000003915 air pollution Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000011941 photocatalyst Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000004753 textile Substances 0.000 description 2
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 2
- 239000012855 volatile organic compound Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000012494 Quartz wool Substances 0.000 description 1
- 229910003087 TiOx Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000003916 acid precipitation Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 239000012300 argon atmosphere Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910021393 carbon nanotube Inorganic materials 0.000 description 1
- 239000002041 carbon nanotube Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 230000005281 excited state Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910021392 nanocarbon Inorganic materials 0.000 description 1
- 239000002086 nanomaterial Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 238000013033 photocatalytic degradation reaction Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XTQHKBHJIVJGKJ-UHFFFAOYSA-N sulfur monoxide Chemical class S=O XTQHKBHJIVJGKJ-UHFFFAOYSA-N 0.000 description 1
- 229910052815 sulfur oxide Inorganic materials 0.000 description 1
- HLLICFJUWSZHRJ-UHFFFAOYSA-N tioxidazole Chemical compound CCCOC1=CC=C2N=C(NC(=O)OC)SC2=C1 HLLICFJUWSZHRJ-UHFFFAOYSA-N 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J21/00—Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
- B01J21/06—Silicon, titanium, zirconium or hafnium; Oxides or hydroxides thereof
- B01J21/063—Titanium; Oxides or hydroxides thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/30—Catalysts, in general, characterised by their form or physical properties characterised by their physical properties
- B01J35/39—Photocatalytic properties
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/34—Irradiation by, or application of, electric, magnetic or wave energy, e.g. ultrasonic waves ; Ionic sputtering; Flame or plasma spraying; Particle radiation
- B01J37/349—Irradiation by, or application of, electric, magnetic or wave energy, e.g. ultrasonic waves ; Ionic sputtering; Flame or plasma spraying; Particle radiation making use of flames, plasmas or lasers
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Health & Medical Sciences (AREA)
- Plasma & Fusion (AREA)
- Toxicology (AREA)
- Catalysts (AREA)
Abstract
The invention relates to a preparation method of dielectric barrier discharge modified titanium dioxide, which comprises the following steps: placing anatase type nano titanium dioxide into a closed inner cavity of a dielectric barrier discharge plasma reactor, and introducing argon and hydrogen into the closed inner cavity of the dielectric barrier discharge plasma reactor according to a volume ratio of 80-90: 10-20, wherein the flow rate of the mixed gas is 2L/min, and then a pulse power supply device is used for applying a pulse current with the voltage of 3-5kV and the frequency of 20kHz into the dielectric barrier discharge plasma reactor and keeping the pulse current for 5-30 minutes to obtain the dielectric barrier discharge plasma reactor. The titanium dioxide modified by dielectric barrier discharge has visible light absorption performance, excellent specific surface area and pore structure, and is a good visible light catalyst.
Description
Technical Field
The invention relates to the technical field of photocatalytic environmental protection, in particular to a preparation method of dielectric barrier discharge modified titanium dioxide.
Background
With the deep release of the reform, the rapid development of the economy of China brings a plurality of hidden disadvantages, wherein the atmospheric environmental pollution is the most obvious problem. In addition to the consumption of resources, the pollution gas which cannot be metered is discharged into the atmospheric environment, and the adverse effect caused by the pollution gas is surrounded on the earth till now and continues to come into existence. Excessive nitrogen oxides, sulfur oxides and VOCs (volatile organic compounds) not only can cause serious environmental pollution problems such as acid rain, haze and the like, but also can influence the health of people, and can unconsciously cause difficult-to-recover results. At present, China pays more and more attention to the problem of atmospheric environmental pollution, and technical development of atmospheric pollution control is encouraged. Among many pollution control technologies, titanium dioxide photocatalysis has received much attention due to its advantages of high efficiency, environmental protection, low energy consumption, etc.
Titanium dioxide belongs to an n-type semiconductor material, the forbidden band width of the titanium dioxide is 3.2eV (anatase), when the titanium dioxide is irradiated by ultraviolet light with the wavelength of 387.5nm or less, electrons of a valence band are transited to a conduction band to form photo-generated electrons, and the photocatalysis effect is triggered, and the basic principle of the titanium dioxide is shown in figure 1.
Since 1970, photocatalytic research on titanium dioxide has been carried out for 40 years, and at present, photocatalytic degradation of pollutants by using titanium dioxide as a photocatalyst is well-established, and related patents on titanium dioxide photocatalysis are enormous. However, titanium dioxide has defects as a photocatalyst, and the most central problem is that titanium dioxide can only absorb ultraviolet light, which severely limits its application in products such as photocatalytic spraying, paint and the like. In order to solve such problems, many patents (such as [111957310] and [111921545 ]) have proposed to improve the visible light catalytic performance by doping nano silver or using nano carbon, however, these methods have certain disadvantages, and the development of the titanium dioxide visible light catalytic technology is still an important subject to be discussed.
As one of the low temperature plasma technologies, the dielectric barrier discharge technology has attracted attention because of its advantages of high efficiency, environmental protection, no secondary pollution, etc. The Dielectric Barrier Discharge (DBD) technology can not only generate substances in a high-energy electronic treatment and purification device, but also excite gas in a reaction cavity to form free radicals, ion clusters and the like, so that a plurality of physical and chemical reactions are initiated, and the DBD is a novel discharge reaction device. In the prior patent [104909428B ], a dielectric barrier discharge device is applied to the fields of air pollution control, environmental protection, textile modification and the like, but the dielectric barrier discharge device is never applied to the visible light catalytic modification of titanium dioxide.
In conclusion, titanium dioxide can only absorb ultraviolet light below 387.5nm, and the absorption capacity for visible light is almost 0. Although nano titanium dioxide can have certain visible light catalytic capability by doping materials such as nano silver, carbon nano tubes and the like, the industrialization of products is more or less difficult due to the high cost and the complex production process of the nano titanium dioxide. The existing dielectric barrier discharge technology and patent mainly aim at the application in the directions of environmental protection, air pollution control, textile modification and the like, and if the technology and the patent are directly applied to titanium dioxide modification, the problems of powder scattering, insufficient air tightness and the like exist.
Disclosure of Invention
The invention provides a preparation method of dielectric barrier discharge modified titanium dioxide, which can prepare the modified titanium dioxide by using a dielectric barrier discharge technology, wherein the prepared titanium dioxide has visible light catalytic capability, and the preparation method is simple and has great significance in industrial application.
The invention is realized by the following technical scheme:
a preparation method of dielectric barrier discharge modified titanium dioxide comprises the following steps: placing anatase type nano titanium dioxide into a closed inner cavity of a dielectric barrier discharge plasma reactor, and introducing argon and hydrogen into the closed inner cavity of the dielectric barrier discharge plasma reactor according to a volume ratio of 80-90: 10-20, wherein the flow rate of the mixed gas is 2L/min, and then a pulse power supply device is used for applying a pulse current with the voltage of 3-5kV and the frequency of 20kHz into the dielectric barrier discharge plasma reactor and keeping the pulse current for 5-30 minutes to obtain the dielectric barrier discharge plasma reactor.
Furthermore, the dielectric barrier discharge plasma reactor is provided with a gas inlet, a feed inlet and a discharge outlet which are communicated with the closed inner cavity of the dielectric barrier discharge plasma reactor and can be opened and closed, and the gas inlet is connected with an external argon storage tank and an external hydrogen storage tank through a gas inlet pipe provided with a flowmeter.
The problem of powder scattering and insufficient air tightness can be solved by wrapping quartz wool outside the dielectric barrier discharge plasma reactor.
The titanium dioxide modified by dielectric barrier discharge has visible light absorption performance, excellent specific surface area and pore structure, and is a good visible light catalyst. The device has simple and easy design, low overall equipment investment and quite good universality, and can be applied to various nano materials.
The principle is as follows:
on a dielectric barrier discharge plasma reactor, hydrogen is excited by high-energy electrons and an electric field in an argon atmosphere and is converted into an excited state to become an electron donor. The titanium dioxide receives electrons provided by the excited hydrogen under the action of the plasma, so that the valence state is reduced and converted into a Magneli state (titanium oxide with a low valence state, namely TiOx). Different from the normal state titanium dioxide, the Magneli state titanium oxide formed after the dielectric barrier discharge treatment has a smaller forbidden band width (2.6eV) due to a lower valence state, and thus has the performance of absorbing visible light. In addition, high-energy electrons generated by dielectric barrier discharge can purify impurities in the titanium dioxide material and modify the surface structure of the titanium dioxide material, and finally the nano titanium dioxide has more pore structures and larger specific surface area, so that the modified titanium dioxide is facilitated to realize efficient photocatalysis.
Compared with the prior art, the invention has the following beneficial effects:
the titanium dioxide modified by dielectric barrier discharge has visible light absorption performance, excellent specific surface area and pore structure, and is a good visible light catalyst. The method is simple and easy to implement, is efficient and environment-friendly, has low cost, no secondary pollution and quite good universality, and has great significance in industrial application.
Drawings
FIG. 1 is a schematic view of the photocatalytic principle of titanium dioxide.
FIG. 2 is a schematic structural diagram of a device for modifying titanium dioxide by dielectric barrier discharge.
Detailed Description
Example 1
A preparation method of dielectric barrier discharge modified titanium dioxide comprises the following steps: putting anatase type nano titanium dioxide into a closed inner cavity of a dielectric barrier discharge plasma reactor 1, and introducing argon and hydrogen into the closed inner cavity of the dielectric barrier discharge plasma reactor 1 according to a volume ratio of 80: 20, the flow rate of the mixed gas is 2L/min, then a pulse power supply device 5 applies pulse current with the voltage of 3kV and the frequency of 20kHz in the dielectric barrier discharge plasma reactor 1, and the mixed gas is kept for 30 minutes, thus obtaining the dielectric barrier discharge plasma reactor.
Example 2
A preparation method of dielectric barrier discharge modified titanium dioxide comprises the following steps: putting anatase type nano titanium dioxide into a closed inner cavity of a dielectric barrier discharge plasma reactor 1, and introducing argon and hydrogen into the closed inner cavity of the dielectric barrier discharge plasma reactor 1 according to a volume ratio of 90: 10, the flow rate of the mixed gas is 2L/min, then a pulse power supply device 5 applies pulse current with the voltage of 5kV and the frequency of 20kHz into the dielectric barrier discharge plasma reactor 1, and the mixed gas is kept for 5 minutes, thus obtaining the dielectric barrier discharge plasma reactor.
Example 3
A preparation method of dielectric barrier discharge modified titanium dioxide comprises the following steps: putting anatase type nano titanium dioxide into a closed inner cavity of a dielectric barrier discharge plasma reactor 1, and introducing argon and hydrogen into the closed inner cavity of the dielectric barrier discharge plasma reactor 1 according to a volume ratio of 85: 15, the flow rate of the mixed gas is 2L/min, then a pulse current with the voltage of 4kV and the frequency of 20kHz is applied to the dielectric barrier discharge plasma reactor 1 through a pulse power supply device 5, and the mixed gas is kept for 15 minutes, thus obtaining the dielectric barrier discharge plasma reactor.
The dielectric barrier discharge plasma reactor 1 used in the above embodiment is provided with a gas inlet 2, a feed inlet 3 and a discharge outlet 4 which are communicated with a closed inner cavity of the dielectric barrier discharge plasma reactor and can be opened and closed, wherein the gas inlet 2 is connected with an external argon storage tank and an external hydrogen storage tank through gas inlet pipes provided with flow meters respectively.
The above embodiments are merely illustrative of the technical solutions of the present invention, and the present invention is not limited to the above embodiments, and any modifications or alterations according to the principles of the present invention should be within the protection scope of the present invention.
Claims (2)
1. A preparation method of dielectric barrier discharge modified titanium dioxide is characterized by comprising the following steps: the method comprises the following steps: putting anatase type nano titanium dioxide into a closed inner cavity of a dielectric barrier discharge plasma reactor (1), and introducing argon and hydrogen into the closed inner cavity of the dielectric barrier discharge plasma reactor (1) according to a volume ratio of 80-90: 10-20, the flow rate of the mixed gas is 2L/min, then a pulse power supply device (5) applies pulse current with the voltage of 3-5kV and the frequency of 20kHz into the dielectric barrier discharge plasma reactor (1), and the mixed gas is kept for 5-30 minutes, thus obtaining the dielectric barrier discharge plasma reactor.
2. The method for preparing dielectric barrier discharge modified titanium dioxide according to claim 1, wherein: the dielectric barrier discharge plasma reactor (1) is provided with a gas inlet (2), a feed inlet (3) and a discharge outlet (4) which are communicated with a closed inner cavity of the dielectric barrier discharge plasma reactor, wherein the gas inlet (2) is connected with an external argon storage tank and an external hydrogen storage tank through a gas inlet pipe provided with a flowmeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110313812.1A CN113042023A (en) | 2021-03-24 | 2021-03-24 | Preparation method of dielectric barrier discharge modified titanium dioxide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110313812.1A CN113042023A (en) | 2021-03-24 | 2021-03-24 | Preparation method of dielectric barrier discharge modified titanium dioxide |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113042023A true CN113042023A (en) | 2021-06-29 |
Family
ID=76514853
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110313812.1A Pending CN113042023A (en) | 2021-03-24 | 2021-03-24 | Preparation method of dielectric barrier discharge modified titanium dioxide |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113042023A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2481152A1 (en) * | 2003-09-11 | 2005-03-11 | E.I. Du Pont De Nemours And Company | Plasma synthesis of metal oxide nanoparticles |
| WO2008091053A1 (en) * | 2007-01-24 | 2008-07-31 | Iucf-Hyu (Industry-University Cooperation Foundation Hanyang University) | Method of preparation for titania photo-catalyst by oxygen plasma and rapid thermal annealing |
| CN102010001A (en) * | 2010-11-17 | 2011-04-13 | 东华大学 | Preparation method of titanium dioxide cubic cone crystal |
| CN107497413A (en) * | 2017-07-27 | 2017-12-22 | 东华大学 | A kind of preparation method of black titanium dioxide coating |
| CN109704398A (en) * | 2019-03-01 | 2019-05-03 | 洛阳师范学院 | A kind of normal pressure cold plasma preparation method of grey low-valence titanium oxide powder material |
| CN111013560A (en) * | 2019-12-26 | 2020-04-17 | 西南石油大学 | Oxygen-deficient titanium dioxide catalyst, preparation method and application thereof |
-
2021
- 2021-03-24 CN CN202110313812.1A patent/CN113042023A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2481152A1 (en) * | 2003-09-11 | 2005-03-11 | E.I. Du Pont De Nemours And Company | Plasma synthesis of metal oxide nanoparticles |
| WO2008091053A1 (en) * | 2007-01-24 | 2008-07-31 | Iucf-Hyu (Industry-University Cooperation Foundation Hanyang University) | Method of preparation for titania photo-catalyst by oxygen plasma and rapid thermal annealing |
| CN102010001A (en) * | 2010-11-17 | 2011-04-13 | 东华大学 | Preparation method of titanium dioxide cubic cone crystal |
| CN107497413A (en) * | 2017-07-27 | 2017-12-22 | 东华大学 | A kind of preparation method of black titanium dioxide coating |
| CN109704398A (en) * | 2019-03-01 | 2019-05-03 | 洛阳师范学院 | A kind of normal pressure cold plasma preparation method of grey low-valence titanium oxide powder material |
| CN111013560A (en) * | 2019-12-26 | 2020-04-17 | 西南石油大学 | Oxygen-deficient titanium dioxide catalyst, preparation method and application thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Wang et al. | Fluorine-induced oxygen vacancies on TiO2 nanosheets for photocatalytic indoor VOCs degradation | |
| Zhang et al. | Highly ordered Fe3+/TiO2 nanotube arrays for efficient photocataltyic degradation of nitrobenzene | |
| CN105749893B (en) | A kind of preparation method of the modified active carbon fiber silk of area load nano titanium oxide | |
| CN103285861B (en) | An Ag3VO4/TiO2 compound nano-wire having visible light activity, a preparation method and applications thereof | |
| CN105110423A (en) | Carbon-aerogel-carried bimetal organic framework electro-Fenton cathode and preparation method thereof | |
| CN111013560B (en) | Oxygen-deficient titanium dioxide catalyst, preparation method and application thereof | |
| WO2021212923A1 (en) | P-n heterojunction composite material supported on surface of nickel foam, preparation method therefor and use thereof | |
| CN110237834B (en) | Preparation method of carbon quantum dot/zinc oxide visible-light-driven photocatalyst | |
| CN105032144A (en) | Double-medium barrier discharge organic waste gas treatment apparatus for embedded ultraviolet modulator tube and method thereof | |
| CN102600823A (en) | Preparation method of graphene/titania composite material | |
| CN101966452B (en) | Method for preparing visible light-responded LaVO4 and TiO2 composite nanotube | |
| CN109692698B (en) | Bi/Ti for catalytic reduction of NOx3C2Nano-sheet photocatalyst and preparation method thereof | |
| CN108435229A (en) | A kind of phosphorus doping multistage pore canal azotized carbon nano piece and preparation method thereof | |
| CN104383910A (en) | Preparation method of pucherite/graphene compound photo-catalyst with controllable particle size | |
| CN113117704A (en) | Preparation method and application of modified nano titanium dioxide photocatalyst | |
| Yang et al. | 2D/2D Ti3C2/Bi4O5Br2 nanosheet heterojunction with enhanced visible light photocatalytic activity for NO removal | |
| CN105771953A (en) | Preparation method of zinc titanate and titanium dioxide composite nano material | |
| CN107376905A (en) | A kind of preparation method of the Ag/ZnO composites of degradable formaldehyde | |
| CN204865485U (en) | Two dielectric barrier discharge organic waste gas processing apparatus of embedded ultraviolet fluorescent tube | |
| CN103521205A (en) | Method of preparing core-shell structure TiO2 material with high photocatalytic activity | |
| CN107497427B (en) | Preparation method of silver/graphene/zinc oxide composite material capable of degrading formaldehyde | |
| Yu et al. | Preparation and photocatalytic performance of C/N Co-doped rich-defect tio2 by dielectric barrier discharge plasma | |
| CN111468138B (en) | One-dimensional rod-shaped CuBi2O4@CuBi2S4Visible light catalyst and preparation method and application thereof | |
| CN109264671A (en) | Plasma spray coating film cooperates with DBD catalytic methane dry reforming device and method | |
| CN102989446B (en) | Preparation method of F-MnTiO3 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210629 |