CN110734109A - photocatalytic degradation material for sewage treatment and use method thereof - Google Patents
photocatalytic degradation material for sewage treatment and use method thereof Download PDFInfo
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- CN110734109A CN110734109A CN201911037886.6A CN201911037886A CN110734109A CN 110734109 A CN110734109 A CN 110734109A CN 201911037886 A CN201911037886 A CN 201911037886A CN 110734109 A CN110734109 A CN 110734109A
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- reaction
- light source
- carrier
- area
- photocatalytic
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- 239000000463 material Substances 0.000 title claims abstract description 33
- 239000010865 sewage Substances 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000013033 photocatalytic degradation reaction Methods 0.000 title claims abstract description 14
- 238000006243 chemical reaction Methods 0.000 claims abstract description 55
- 238000013032 photocatalytic reaction Methods 0.000 claims abstract description 17
- 239000011159 matrix material Substances 0.000 claims abstract description 10
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 81
- 239000004408 titanium dioxide Substances 0.000 claims description 39
- 230000001699 photocatalysis Effects 0.000 claims description 17
- 239000000126 substance Substances 0.000 claims description 16
- 230000008569 process Effects 0.000 claims description 9
- 238000005245 sintering Methods 0.000 claims description 7
- 230000015556 catabolic process Effects 0.000 claims description 5
- 239000013078 crystal Substances 0.000 claims description 5
- 238000006731 degradation reaction Methods 0.000 claims description 5
- 230000003287 optical effect Effects 0.000 claims description 4
- 230000008859 change Effects 0.000 claims description 3
- 239000011521 glass Substances 0.000 claims description 3
- 229920003023 plastic Polymers 0.000 claims description 3
- 230000003197 catalytic effect Effects 0.000 description 19
- 239000002105 nanoparticle Substances 0.000 description 5
- 239000002245 particle Substances 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 238000000862 absorption spectrum Methods 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000006555 catalytic reaction Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 230000033116 oxidation-reduction process Effects 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical group [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 description 2
- 239000011941 photocatalyst Substances 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005229 chemical vapour deposition Methods 0.000 description 1
- 239000011362 coarse particle Substances 0.000 description 1
- 239000005337 ground glass Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007146 photocatalysis Methods 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 238000005215 recombination Methods 0.000 description 1
- 230000006798 recombination Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 230000005476 size effect Effects 0.000 description 1
- 238000003746 solid phase reaction Methods 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
- C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
-
- 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
-
- B01J35/39—
Abstract
The invention discloses sewage treatment photocatalytic degradation materials and a using method thereof, wherein the materials comprise a carrier and a plurality of reaction points formed on the carrier, a dot matrix rough structure is constructed on the carrier, a plurality of gaps are formed among the dot matrix rough structure, the reaction points are embedded in the gaps, the dot matrix rough structure can diffract or refract a light source, when the light source irradiates on the carrier, the light source can form a light source belt, an overlapping area is formed among the reaction points, the light source and a catalyzed object, and a photocatalytic reaction is generated in the overlapping area.
Description
Technical Field
The invention relates to materials, in particular to photocatalytic degradation materials for sewage treatment and a use method thereof.
Background
The titanium dioxide photocatalytic material as semiconductor photocatalyst is the most studied new environment-friendly materials at present, the property of the photocatalyst is the key factor in the photocatalytic oxidation process, and TiO2The crystal form, the grain size, the grain diameter, the surface state and other factors have great influence on the photocatalytic performance, and the nano particle with large surface area has excellent catalytic activity and selectivity determined by the surface effect and the mentioning effect, so that the nano particle has excellent catalytic activity and selectivityTiO2Because the quantum size effect of the nano-particle makes the energy levels of the conduction band and the valence band become discrete energy levels, the energy gap becomes wider, the potential of the conduction band becomes more negative, and the potential of the valence band becomes more positive, which means that the nano-particle has stronger oxidation reduction capability, and because the particle size of the nano-particle is small, a photon-generated carrier is easier to migrate from the inside of the particle to the surface of the particle than a coarse particle, the recombination probability of electrons and holes is obviously reduced, and the photocatalytic performance is also favorably improved, so the TiO with large specific surface area and small particle size is used2Has been the focus of research in the field of photocatalysis.
The traditional titanium dioxide material using method such as traditional solid phase reaction and the existing chemical vapor deposition, sol-gel and the like has the defects of complex process and high cost, the obtained mixed crystal form has uneven granularity, and the overlapping area of titanium dioxide, ultraviolet rays and a catalytic substance on a unit area cannot be utilized to the maximum extent, so that the photocatalytic efficiency of the titanium dioxide is reduced.
Disclosure of Invention
The invention overcomes the defects of the prior art and provides photocatalytic degradation materials for sewage treatment and a using method thereof.
In order to achieve the purpose, the invention adopts the technical scheme that sewage treatment photocatalytic degradation materials comprise a carrier and a plurality of reaction points formed on the carrier, a lattice rough structure is constructed on the carrier, a plurality of gaps are formed among the lattice rough structure, the reaction points are embedded in the gaps, the lattice rough structure can diffract or refract a light source, when the light source irradiates on the carrier, the light source can form a light source band, an overlapping area is formed between the reaction points and the light source, and a photocatalytic reaction is generated in the overlapping area.
In preferred embodiments of the present invention, the carrier can be a transparent glass or transparent plastic sheet structure.
In preferred embodiments of the present invention, the space between the reaction point and the gap is filled with gel.
In preferred embodiments of the present invention, the reaction sites are titanium dioxide material.
In preferred embodiments of the present invention, the reaction sites are surrounded by a gel formed by sintering a solution of titanium dioxide.
In preferred embodiments of the present invention, the lattice roughness can be a crystal structure or a frosted structure.
In preferred embodiments of the present invention, the ratio of the width of the reaction spot line to the width of the light strip generated by the light source strip can be adjusted.
In order to achieve the purpose, the invention adopts another technical proposal that using methods comprise the following steps:
(1) sintering and converting titanium dioxide through a gel process to obtain a reaction point material, embedding the reaction point into a gap of the lattice rough structure, and enabling the reaction point and the carrier to be in an body structure;
(2) the light source irradiates the carrier, the light source with the lattice rough structure capable of refracting or diffracting leads the light source to the reaction point, an overlapping area is formed between the light source and the reaction point, and the area of the overlapping area between the reaction point and the light source is changed by changing the lattice structure constructed by the carrier;
(3) the ratio of the line width of the reaction point to the width of the light band generated by the light source band can change the area of the overlapping area of the carrier under the unit specific surface area, thereby changing the photocatalytic reaction area;
(4) the sewage in the photocatalytic area can be subjected to photocatalytic reaction, so that the sewage degradation is realized.
In preferred embodiments of the present invention, the line width of the reaction sites in step (3) is 1.2-1.8 mm.
In preferred embodiments of the present invention, the width of the optical tape in step (3) is 1.6-2.4 mm.
The invention solves the defects in the background technology, and has the following beneficial effects:
(1) the titanium dioxide is sintered by a gel process, so that the bandwidth of the titanium dioxide material can be reduced, the absorption spectrum can be widened, the service life of a current carrier can be prolonged, and the photocatalytic efficiency can be improved.
(2) The reaction points can be precise optical dots, so that ultraviolet light can be effectively reflected or diffracted to the titanium dioxide material in a total reflection manner, and a maximized catalytic reaction overlapping area is formed.
(3) The titanium dioxide forms a photocatalytic reaction under the irradiation of ultraviolet light, has oxidation and reduction capability to purify pollutants, has room-temperature deep oxygen for photocatalytic purification, has small secondary pollution, and has stronger stability and light corrosion resistance in the photocatalytic process, thereby improving the photocatalytic efficiency.
(4) Through constructing the lattice rough structure, the lattice rough structure can be a frosted structure or a polished unsmooth structure, and then is combined with the reaction points, the largest overlapping area formed between the titanium dioxide material and the light source under the unit specific surface area can be constructed, the maximization of the overlapping area is realized, and the catalytic degradation efficiency of the titanium dioxide is utilized to the maximum extent.
(5) The overlap area is an overlap area of ultraviolet light, a catalytic substance and titanium dioxide, the overlap area is an effective area of photocatalytic reaction only when the overlap area of the ultraviolet light, the catalytic substance and the titanium dioxide is different from each other, when the area of the titanium dioxide is too large and the area of the ultraviolet light diffracted to the titanium dioxide is smaller, the effective reaction area between the ultraviolet light and the catalytic substance and the effective reaction area between the ultraviolet light and the titanium dioxide are reduced while the titanium dioxide material is wasted, the maximum overlap area can be formed only when the contact area between the ultraviolet light irradiation area, the titanium dioxide area and the catalytic substance are matched, so that the photocatalytic reaction efficiency is improved, the contact area between the titanium dioxide and the ultraviolet light is a light contact surface, the light contact surface side is in contact with the catalytic substance, the other side is only in contact with the ultraviolet light and isolated from the catalytic substance, the surface of the titanium dioxide in contact with the catalytic substance is a contact surface, and the photocatalytic reaction can be excited by light when the contact surface is overlapped with the light contact surface, therefore, the optimal proportion between the light contact surface and the overlap area.
Detailed Description
The technical solutions of the embodiments of the present invention are clearly and completely described in order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, it is obvious that the described embodiments are partial embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by a person of ordinary skill in the art based on the described embodiments of the present invention belong to the protection scope of the present invention.
photocatalytic degradation materials for sewage treatment comprise a carrier and a plurality of reaction points formed on the carrier, wherein a dot matrix rough structure is constructed on the carrier, a plurality of gaps are formed among the dot matrix rough structure, the reaction points are embedded in the gaps, the dot matrix rough structure can diffract or refract a light source, the dot matrix rough structure is constructed and then combined with the reaction points, the largest overlapping area formed between a titanium dioxide material and the light source under the unit specific surface area can be constructed, the maximization of the overlapping area is realized, and the catalytic degradation efficiency of titanium dioxide is maximized.
The reaction point is titanium dioxide material, the lattice rough structure is similar to a ground glass structure, the surface is not smooth, the light source is ultraviolet light, the overlapping area is the overlapping area of the ultraviolet light, the catalytic substance and the titanium dioxide, the effective area of the photocatalytic reaction is only the overlapping area of the ultraviolet light, the catalytic substance and the titanium dioxide, when the titanium dioxide area is too large and the ultraviolet light irradiation area is small, the area of the overlapping area is maximized when the ultraviolet light diffracts to the titanium dioxide, and the titanium dioxide material is wasted, the effective reaction area among the ultraviolet light, the catalytic substance and the titanium dioxide is reduced, only the contact area among the ultraviolet light irradiation area, the titanium dioxide area and the catalytic substance is matched, so that the photocatalytic reaction efficiency is improved, the contact area between the titanium dioxide and the ultraviolet light is the light contact area, the light contact surface side is in contact with the catalytic substance, the other side is in contact with the ultraviolet light and is isolated from the catalytic substance, the side in contact with the catalytic substance is the contact surface, and the light contact surface is the contact surface when the contact surface is overlapped with the light contact surface, so that the optimal proportion between the light contact surface and the overlapping area is.
When a light source irradiates on a carrier, the light source can form a light source band, an overlapping area is formed between the reaction point and the light source, a photocatalytic reaction is generated in the overlapping area, the carrier can be of a transparent glass or transparent plastic plate structure, gel is filled between the reaction point and the gap, titanium dioxide sintering is carried out through a gel process, the bandwidth of a titanium dioxide material can be reduced, the absorption spectrum is widened, the service life of a carrier is prolonged, the photocatalytic efficiency is improved, gel is wrapped on the edge of the reaction point, and the gel is formed by sintering a titanium dioxide solution.
The lattice rough structure can be a crystal structure or a frosted structure, the ratio of the line width of the reaction points to the width of the light band generated by the light source band can be adjusted, and the reaction points can be precise optical dots, so that ultraviolet light can be effectively reflected or diffracted to a titanium dioxide material in a total reflection manner, and a maximized catalytic reaction overlapping area is formed.
In order to achieve the purpose, the invention adopts another technical proposal that using methods comprise the following steps:
(1) sintering and converting titanium dioxide through a gel process to obtain a reaction point material, embedding the reaction point into a gap of the lattice rough structure, and enabling the reaction point and the carrier to be in an body structure;
(2) the light source irradiates the carrier, the light source with the lattice rough structure capable of refracting or diffracting leads the light source to the reaction point, an overlapping area is formed between the light source and the reaction point, and the area of the overlapping area between the reaction point and the light source is changed by changing the lattice structure constructed by the carrier;
(3) the ratio of the line width of the reaction point to the width of the light band generated by the light source band can change the area of the overlapping area of the carrier under the unit specific surface area, thereby changing the photocatalytic reaction area;
(4) the sewage in the photocatalytic area can be subjected to photocatalytic reaction, so that the sewage degradation is realized.
The line width of the reaction point in the step (3) is 1.2-1.8mm, preferably 1.5mm, and the bandwidth of the light band in the step (3) is 1.6-2.4mm, preferably 2 mm.
The titanium dioxide forms a photocatalytic reaction under the irradiation of ultraviolet light, has oxidation-reduction capability to purify pollutants, has room-temperature deep oxygen for photocatalytic purification, has small secondary pollution, and has stronger stability and light corrosion resistance in the photocatalytic process, thereby improving the photocatalytic efficiency.
In light of the foregoing description of the preferred embodiment of the present invention, it is to be understood that various changes and modifications may be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (10)
1, photocatalytic degradation materials for sewage treatment, comprising a carrier and a plurality of reaction points formed on the carrier, characterized in that,
the carrier is provided with a dot matrix rough structure, a plurality of gaps are formed among the dot matrix rough structure, the reaction points are embedded in the gaps, and the dot matrix rough structure can diffract or refract a light source;
when the light source irradiates on the carrier, the light source can form a light source band, an overlapping area is formed between the reaction point and the light source catalyzed object, and a photocatalytic reaction is generated in the overlapping area.
2. The photocatalytic degradation material for sewage treatment according to claim 1, wherein the carrier is a transparent glass or transparent plastic plate structure.
3. The photocatalytic degradation material for sewage treatment according to claim 1, wherein the space between the reaction point and the gap is filled with gel.
4. The photocatalytic degradation material for sewage treatment according to claim 1, wherein the reaction sites are titanium dioxide material.
5. The photocatalytic degradation material for sewage treatment according to claim 1, wherein the reaction sites are coated with a gel at their edges, and the gel is formed by sintering a titania solution.
6. The photocatalytic degradation material for sewage treatment of claim 1, wherein the lattice roughness can be a crystal structure or a frosted structure.
7. The photocatalytic degradation material for sewage treatment according to claim 1, wherein the ratio of the line width of the reaction point to the light band width generated by the light source band can be adjusted.
Use according to claim 1, in which the method of comprises the following steps:
(1) sintering and converting titanium dioxide through a gel process to obtain a reaction point material, and embedding the reaction points into gaps of the lattice rough structure to enable the reaction points and the carrier to be in body structures;
(2) the light source irradiates the carrier, the light source with a lattice rough structure capable of refracting or diffracting is led to the reaction point, an overlapping area is formed between the light source and the reaction point as well as between the light source and the catalyzed substance, and the area of the overlapping area between the reaction point and the light source is changed by changing the lattice structure constructed by the carrier;
(3) the ratio of the line width of the reaction point to the width of the light band generated by the light source band can change the area of the overlapped area of the carrier under the unit specific surface area, thereby changing the photocatalytic reaction area;
(4) the sewage in the photocatalytic area can be subjected to photocatalytic reaction, so that the sewage degradation is realized.
9. The method of claim 8, wherein the line width of the reaction point in step (3) is 1.2-1.8 mm.
10. The kinds of sewage treatment method of claim 8, wherein the width of the optical band in step (3) is 1.6-2.4 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911037886.6A CN110734109A (en) | 2019-10-29 | 2019-10-29 | photocatalytic degradation material for sewage treatment and use method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911037886.6A CN110734109A (en) | 2019-10-29 | 2019-10-29 | photocatalytic degradation material for sewage treatment and use method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110734109A true CN110734109A (en) | 2020-01-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911037886.6A Withdrawn CN110734109A (en) | 2019-10-29 | 2019-10-29 | photocatalytic degradation material for sewage treatment and use method thereof |
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| Country | Link |
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| CN (1) | CN110734109A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1085606A (en) * | 1996-09-11 | 1998-04-07 | Toshiba Lighting & Technol Corp | Photocatalytic body, photocatalytic filter, photocatalytic device, air conditioner, air cleaner and air circulator |
| JP2006312152A (en) * | 2005-05-09 | 2006-11-16 | Wako Seisakusho:Kk | Small high efficient photocatalyst unit |
| US20190247840A1 (en) * | 2018-02-09 | 2019-08-15 | Jason Yan | Photocatalyst composition |
-
2019
- 2019-10-29 CN CN201911037886.6A patent/CN110734109A/en not_active Withdrawn
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1085606A (en) * | 1996-09-11 | 1998-04-07 | Toshiba Lighting & Technol Corp | Photocatalytic body, photocatalytic filter, photocatalytic device, air conditioner, air cleaner and air circulator |
| JP2006312152A (en) * | 2005-05-09 | 2006-11-16 | Wako Seisakusho:Kk | Small high efficient photocatalyst unit |
| US20190247840A1 (en) * | 2018-02-09 | 2019-08-15 | Jason Yan | Photocatalyst composition |
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Application publication date: 20200131 |