CN112546986A - Optical waveguide photocatalysis device - Google Patents

Optical waveguide photocatalysis device Download PDF

Info

Publication number
CN112546986A
CN112546986A CN202011452882.7A CN202011452882A CN112546986A CN 112546986 A CN112546986 A CN 112546986A CN 202011452882 A CN202011452882 A CN 202011452882A CN 112546986 A CN112546986 A CN 112546986A
Authority
CN
China
Prior art keywords
optical waveguide
light
substrate
photocatalytic
optical fiber
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
Application number
CN202011452882.7A
Other languages
Chinese (zh)
Inventor
高琛
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
University of Chinese Academy of Sciences
Original Assignee
University of Chinese Academy of Sciences
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by University of Chinese Academy of Sciences filed Critical University of Chinese Academy of Sciences
Priority to CN202011452882.7A priority Critical patent/CN112546986A/en
Publication of CN112546986A publication Critical patent/CN112546986A/en
Pending legal-status Critical Current

Links

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
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/08—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor
    • B01J19/12—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor employing electromagnetic waves
    • B01J19/122—Incoherent waves
    • B01J19/127—Sunlight; Visible light
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/86—Catalytic processes
    • B01D53/8671—Removing components of defined structure not provided for in B01D53/8603 - B01D53/8668
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B3/00—Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen
    • C01B3/02—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen
    • C01B3/04—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by decomposition of inorganic compounds, e.g. ammonia
    • C01B3/042—Decomposition of water
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/80—Type of catalytic reaction
    • B01D2255/802—Photocatalytic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/50—Carbon oxides
    • B01D2257/504—Carbon dioxide
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30—Hydrogen technology
    • Y02E60/36—Hydrogen production from non-carbon containing sources, e.g. by water electrolysis

Abstract

The invention discloses an optical waveguide photocatalysis device which comprises at least one optical waveguide catalysis component, wherein the optical waveguide catalysis component comprises an optical waveguide substrate, at least partial area of the outer wall of the optical waveguide substrate is coated with a photocatalysis material, the optical waveguide substrate can receive a light source, and light rays emitted by the light source can be totally reflected in the optical waveguide substrate. According to the optical waveguide photocatalysis device, light rays are absorbed by the photocatalysis material to initiate a photocatalysis reaction, and unabsorbed light is continuously totally reflected in the optical waveguide substrate and is continuously absorbed by the photocatalysis material to initiate the photocatalysis reaction, so that the light energy utilization rate is greatly improved, the degradation of pollutants and the hydrogen and CO production through water photolysis are effectively improved, and the light energy utilization rate is greatly improved2Reaction efficiency of photocatalytic reduction and the like.

Description

Optical waveguide photocatalysis device
Technical Field
The invention relates to the technical field of photocatalysis, in particular to an optical waveguide photocatalysis device.
Background
A photocatalyst is a semiconductor material that absorbs photons to generate electron-hole pairs. When the carriers are diffused to the surface of the material, the carriers can be subjected to oxidation and reduction reactions with species on the surface, so that organic pollutants are degraded by photocatalysis, hydrogen is produced by water photolysis, and CO is produced2Photocatalytic reduction and the like.
In the tubular photocatalytic structure in the prior art, a photocatalytic material is coated on the inner wall of a tubular shell, an LED lamp assembly is arranged inside the shell and irradiates the photocatalytic material on the inner wall and performs photocatalytic reaction, and gas flows through a tube to play a role in degrading toxic and harmful gas entering the tubular shell.
This approach increases the contact between the gas and the photocatalytic material, but the light is constantly transmitted and leaves the tubular housing through the two ends of the tube wall, resulting in a low light utilization.
Therefore, how to provide a solution to improve the utilization rate of light energy remains a technical problem to be solved by those skilled in the art.
Disclosure of Invention
The invention aims to provide an optical waveguide photocatalysis device which can improve the utilization rate of light energy and more efficiently realize the degradation of organic pollutants and the hydrogen production and CO reduction of solar energy water-splitting2And the like.
In order to solve the above technical problems, the present invention provides an optical waveguide photocatalytic device, including at least one optical waveguide catalytic component, where the optical waveguide catalytic component includes an optical waveguide substrate, at least a partial region of an outer wall of the optical waveguide substrate is coated with a photocatalytic material, the optical waveguide substrate is capable of receiving a light source, and light emitted by the light source can be totally reflected inside the optical waveguide substrate.
According to the optical waveguide photocatalysis device, after light emitted by the light source enters the optical waveguide substrate, the light irradiated on the area coated with the photocatalysis material can be absorbed by the photocatalysis material and initiate a photocatalysis reaction, so that the photocatalytic degradation of organic pollutants flowing through the surface of the optical waveguide substrate, hydrogen production by water photolysis or CO production can be realized2Photocatalytic reduction and the like; meanwhile, besides being absorbed by the photocatalytic material, the unabsorbed light is continuously subjected to total reflection in the optical waveguide substrate and continuously propagates forwards, and in the process, the light is continuously absorbed by the photocatalytic material and causes a photocatalytic reaction2Reaction efficiency of photocatalytic reduction and the like.
Optionally, the optical waveguide substrate is a slab waveguide substrate, the photocatalytic material is coated on the upper and lower side walls of the slab waveguide substrate, and the reflecting components are adhered to the end walls of the slab waveguide substrate except for the areas for receiving the light sources.
Optionally, the reflective member is an aluminum foil reflective sheet.
Optionally, the optical waveguide substrate is a columnar optical fiber substrate, and the photocatalytic material is coated on the peripheral wall of the optical fiber substrate.
Optionally, the fiber matrix is wound to form a solenoid structure.
Optionally, the light source is an LED lamp assembly, and includes an LED lamp strip and a plurality of LED patch lamp beads fixed to the LED lamp strip, and the LED lamp assembly is bonded to an end wall of the slab waveguide substrate.
Optionally, the light source is an LED lamp bead, and the LED lamp bead is bonded to one end of the optical fiber substrate.
Optionally, the number of the optical waveguide catalytic assemblies is multiple, the multiple optical waveguide catalytic assemblies are arranged in parallel, and a predetermined distance is provided between two adjacent optical waveguide catalytic assemblies.
Optionally, the optical waveguide catalytic assembly further comprises a fan, wherein the fan is arranged at one end of the optical waveguide catalytic assembly.
Optionally, the light source is sunlight, and the device further comprises a light-gathering cone, one end of the optical fiber substrate is bonded to the bottom end of the light-gathering cone, and the sunlight enters the optical fiber substrate through the light-gathering cone.
Optionally, the number of the optical fiber matrixes is multiple, the optical fiber matrixes are arranged in parallel and uniformly, and one ends of the optical fiber matrixes are bonded to the bottom end of the light gathering cone in a dense arrangement mode.
Optionally, the light-gathering cone is of a circular truncated cone structure, a small end of the circular truncated cone structure is used for being connected with the optical fiber substrate, and a large end of the circular truncated cone structure is used for receiving the sunlight.
Optionally, the sunlight collecting device further comprises a power device for driving the light collecting cone, so that the end of the light collecting cone, which receives the sunlight, can be opposite to the sun.
Drawings
FIG. 1 is a schematic structural diagram of a first embodiment of an optical waveguide photocatalytic device according to the present invention;
FIG. 2 is a front view of the optical waveguide photocatalytic device of FIG. 1;
FIG. 3 is a schematic structural diagram of a second embodiment of an optical waveguide photocatalytic device according to the present invention;
FIG. 4 is a schematic view of the optical waveguide photocatalytic device of FIG. 3 in which the optical fiber substrate is wound into a solenoid;
FIG. 5 is a schematic structural view of the optical waveguide photocatalytic device of FIG. 1 including a plurality of optical waveguide catalytic assemblies;
FIG. 6 is a schematic diagram of the optical waveguide photocatalytic device of FIG. 3 including a plurality of optical waveguide catalytic assemblies;
FIG. 7 is a schematic diagram of the optical waveguide photocatalytic device of FIG. 6 using the sun as a light source;
FIG. 8 is a schematic view of the optical waveguide photocatalytic apparatus of FIG. 6 in which a plurality of optical fiber substrates are fixed to the bottom end of the light-gathering cone.
Wherein the reference numerals in fig. 1 to 8 are explained as follows:
1-an optical waveguide catalytic component; 11-a photocatalytic material; 12-a slab waveguide substrate; 12' -an optical fiber matrix; 2-a fan; 3-an LED lamp assembly; 31-LED light bar; 32-LED paster lamp beads; 4-a light-gathering cone; 5-LED lamp beads.
Detailed Description
In order to make the technical solutions of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.
In FIGS. 2 and 3, the arrows on the surface of the optical waveguide substrate represent flowing gas or liquid; the arrows inside the light guiding matrix represent the light emitted by the light source, and the arrows in fig. 4-6 all represent flowing gas or liquid; the arrows in fig. 7 indicate the sun rays.
Referring to fig. 1 to 4, fig. 1 is a schematic structural diagram of a first embodiment of an optical waveguide photocatalytic device according to the present invention; FIG. 2 is a front view of the optical waveguide photocatalytic device of FIG. 1; FIG. 3 is a schematic structural diagram of a second embodiment of an optical waveguide photocatalytic device according to the present invention; FIG. 4 is a schematic view of the optical fiber substrate 12' wound as a solenoid in the optical waveguide photocatalytic device of FIG. 3.
The invention provides an optical waveguide photocatalysis device, which comprises at least one optical waveguide catalysis component 1, wherein the optical waveguide catalysis component 1 comprises an optical waveguide substrate, at least partial area of the outer wall of the optical waveguide substrate is coated with a photocatalysis material 11, the optical waveguide substrate can receive a light source, and light rays emitted by the light source can be totally reflected in the optical waveguide substrate.
According to the optical waveguide photocatalysis device, after light emitted by a light source enters the optical waveguide substrate, the light irradiated on the area coated with the photocatalysis material 11 is absorbed by the photocatalysis material 11 and initiates a photocatalysis reaction, so that the photocatalytic degradation of organic pollutants flowing through the surface of the optical waveguide substrate, hydrogen production by water photolysis or CO production are realized2Photocatalytic reduction, etc.; meanwhile, light which is not absorbed by the photocatalytic material can be totally reflected inside the optical waveguide substrate and continuously spread forwards, and in the process, light can be continuously absorbed by the photocatalytic material 11 and a photocatalytic reaction is initiated2Reaction efficiency of photocatalytic reduction and the like.
Referring to fig. 1 and 2, in the first embodiment, the optical waveguide substrate is a slab waveguide substrate 12, the photocatalytic material 11 is coated on the upper and lower sidewalls of the slab waveguide substrate 12, and a reflective member (not shown) is adhered to the end wall of the slab waveguide substrate 12 except for the area for receiving the light source.
In the first embodiment, when light irradiates on the upper and lower sidewalls coated with the photocatalytic material 11, a portion of the light is absorbed by the photocatalytic material 11, and another portion of the light is totally reflected back into the slab waveguide substrate 12, and this portion of the light again irradiates on the photocatalytic material 11 and is absorbed by a portion of the light, and the portion that is not absorbed is also totally reflected until reaching the end walls of the optical waveguide. The light reaching the end wall is reflected back to the optical waveguide substrate by the reflecting component arranged on the end wall to continue the cycle process of absorption, photocatalysis and total reflection, so that the light energy utilization rate is improved.
In this embodiment, the reflective member is an aluminum foil reflective sheet (not shown), and in practical applications, the specific structure of the reflective member is not limited, and any reflective mirror is applicable.
In addition, in the first embodiment, the light source is an LED lamp assembly 3, which includes an LED lamp strip 31 and a plurality of LED patch lamp beads 32 fixed to the LED lamp strip 31, and the LED lamp strip 31 is adhered to the end wall of one end of the slab waveguide substrate 12, specifically, by ultraviolet curing.
In practical application, the angle of the light entering the slab waveguide substrate 12 from the LED lamp assembly 3 should be calculated, and the LED lamp assembly 3 is fixed based on the calculated angle, so that the light can be totally reflected by the upper and lower sidewalls coated with the photocatalytic material 11, thereby reducing the light energy loss.
The size of the LED light bars 31 and the number of the fixed LED patch light beads 32 can be set according to the size of the end wall of the slab waveguide substrate 12.
With continued reference to FIG. 3, in a second embodiment, the optical waveguide substrate is a cylindrical optical fiber substrate 12', and the photocatalytic material 11 is coated on the peripheral wall of the optical fiber substrate 12'.
In the second embodiment, since light is totally reflected inside the optical fiber substrate 12', the photocatalytic material 11 may be applied to a partial region of the peripheral wall, or the photocatalytic material 11 may be applied to the entire peripheral wall of the optical fiber substrate 12'. Of course, coating the photocatalytic material 11 on the entire peripheral wall of the optical fiber substrate 12' can effectively improve the photocatalytic yield per unit area, thereby improving the reaction efficiency.
With continued reference to FIG. 4, in practice, the optical fiber substrate 12' may be wound to form a solenoid structure. At this time, the gas or liquid may flow through the inside of the solenoid or the outside of the solenoid and contact the photocatalytic material 11 coated on the surface of the optical fiber substrate 12', thereby increasing the contact area between the air or liquid and the photocatalytic material 11 and improving the reaction efficiency.
In addition, in the second embodiment, the light source is an LED lamp bead 5, and the LED lamp bead 5 is adhered to one end of the optical fiber substrate 12'. The size of the LED bead 5 is set according to the size of the end of the optical fiber substrate 12'.
Similarly, in practical application, the angle of the light emitted by the LED lamp bead 5 should be calculated, and the LED lamp assembly 3 is fixed based on the calculated angle, so as to ensure that the light can be totally reflected inside the optical fiber matrix 12'.
Referring to fig. 5 and 6, fig. 5 is a schematic structural view of the optical waveguide photocatalytic device of fig. 1 including a plurality of optical waveguide catalytic components; FIG. 6 is a schematic structural diagram of the optical waveguide photocatalytic device of FIG. 3 including a plurality of optical waveguide catalytic assemblies.
The number of the optical waveguide catalytic assemblies 1 is multiple, the optical waveguide catalytic assemblies 1 are arranged in parallel, and a preset distance is reserved between every two adjacent optical waveguide catalytic assemblies 1.
The multiple optical waveguide catalytic assemblies 1 are combined for use, so that the total photocatalytic yield can be effectively improved, and the reaction efficiency is further improved. Specifically, when the optical waveguide substrate is the slab waveguide substrate 12, the plurality of slab waveguide substrates 12 are sequentially arranged in parallel; when the optical waveguide substrate is a columnar optical fiber substrate 12', the plurality of optical fiber substrates 12' are arranged in parallel and uniformly, and may be enclosed in a rectangular shape, a square shape, or the like.
The distance between two adjacent optical waveguide catalytic assemblies 1 is not limited as long as the reaction effect and the reaction efficiency can be ensured.
In addition, the device also comprises a fan 2, and the fan 2 is arranged at one end of the optical waveguide catalytic assembly 1. The fan 2 is arranged to facilitate the gas or liquid to flow through the surface of the optical waveguide catalytic assembly 1 rapidly, so as to further improve the reaction efficiency.
In the process of actual use, a plurality of optical waveguide catalytic assemblies 1 can be installed inside a fixed shell, and the fixed shell is provided with an inlet and an outlet through which gas flows, so that the practicability of the device is improved.
Referring to fig. 7 and 8, fig. 7 is a schematic structural view of the optical waveguide photocatalytic device of fig. 6 using the sun as a light source; FIG. 8 is a schematic view of the optical waveguide photocatalytic apparatus of FIG. 6 in which a plurality of optical fiber substrates are fixed to the bottom end of the light-gathering cone.
In another embodiment of the second embodiment of the optical waveguide photocatalytic device according to the present invention, the light source is sunlight, and further comprises a light-gathering cone 4, one end of the optical fiber substrate 12 'is bonded to the bottom end of the light-gathering cone 4, and the sunlight is gathered by the light-gathering cone 4 and then enters the optical fiber substrate 12'.
When sunlight enters the light-gathering cone 4, the sunlight is reflected at the side surface of the light-gathering cone 4, and the light intensity coupled into the optical fiber substrate 12' can obtain about 5 times of gain due to the light-gathering effect of the light-gathering cone 4. When solar water-splitting hydrogen production is carried out, small bubbles begin to appear on the optical fiber substrate 12' and continuously emerge after 5 minutes of sunlight irradiation.
In addition, the number of the optical fiber matrixes 12' is plural, the plural optical fiber matrixes 12' are uniformly arranged in parallel, and one end of each optical fiber matrix is adhered to the bottom end of the light converging cone 4 in a densely arranged manner, so that the light passing through the light converging cone 4 can enter the light matrix 12' as far as possible.
In this embodiment, the light-gathering cone 4 is specifically a circular truncated cone structure, a small end of the circular truncated cone structure is used for being connected with the optical fiber substrate 12', and a large end of the circular truncated cone structure is used for receiving solar rays.
Furthermore, the sunlight collecting device also comprises a power device which is used for driving the light collecting cone 4 to move so that the light collecting cone 4 can be over against the sun, and sunlight rays vertically irradiate into the light collecting cone 4 at any time, so that the utilization rate of sunlight energy is improved to the maximum extent.
In practical application, the power device can be a solar tracker, and the angle of the light gathering cone is adjusted by calculating the angle of the sun at different moments, so that real-time tracking is realized.
The efficiency of the optical waveguide photocatalytic device provided by the invention for degrading organic pollutants and utilizing solar energy to hydrolyze water to produce hydrogen and oxygen is tested.
Experiment one
The photocatalytic device in FIG. 5 is used for degrading formaldehyde in the closed box, and the test process is as follows:
firstly, heating and cleaning a 100mm multiplied by 5mm ultra-white glass sheet in an ultrasonic cleaning machine by acetone, washing the glass sheet by distilled water, and then putting the glass sheet into a magnetron sputtering instrument to sputter and deposit 0.7 percent of Fe-doped TiO on the front side and the back side of the glass sheet2Film, forming photocatalytic materialThe thickness of the layer is controlled to be 300 nm;
secondly, fixing 10 0.5W ultraviolet LED patch lamp beads 32 with the central wavelength of 370nm on an LED lamp strip 31 to form an LED lamp assembly 3, adhering ultraviolet curing glue to one long side of the ultra-white glass, and adhering aluminum foil reflectors to the other three long sides to form an optical waveguide photocatalytic assembly;
then, 5 pieces of the optical waveguide photocatalytic components are overlapped up and down at intervals of 10mm, and a fan 2 is arranged at one end of the optical waveguide photocatalytic components to form a volatile organic pollutant degradation device;
and finally, placing the degradation device into a 0.5 cubic meter closed glove box, filling 10PPM formaldehyde, starting the fan 2 and starting the LED. After 1 hour, the gas in the glove box is sampled, and the formaldehyde solubility is reduced to 5PPM through chromatographic detection, so that the degradation of the polluted gas is effectively realized.
Experiment two
The photocatalytic device in FIG. 6 is used for degrading formaldehyde in the closed box, and the test process is as follows:
first, 1.6 g of Fe (NO) was added3)3·9H2Dissolving O in 60 ml of distilled water to obtain ferric nitrate aqueous solution, adding 800 ml of absolute ethyl alcohol and 80 ml of glacial acetic acid to prepare mixed solution, adding 200 ml of tetrabutyl titanate into 800 ml of absolute ethyl alcohol to prepare solution, dropwise adding the latter solution into the mixed solution, fully stirring for 2 hours to obtain clear light yellow sol, coiling a quartz optical fiber with the diameter of 1.0mm and the length of 5m, heating and cleaning the coiled quartz optical fiber in an ultrasonic cleaning machine by using absolute ethyl alcohol, washing the quartz optical fiber by using distilled water, soaking the optical fiber into the sol, taking out the optical fiber after half an hour, placing the optical fiber in a clean vessel for aging for 48 hours, then placing the optical fiber in a drying oven, drying the optical fiber for 48 hours at 80 ℃, finally placing the optical fiber in a tubular furnace, and annealing the optical fiber at 480 ℃ for 3 hours to form a photocatalytic material layer with the thickness of 100nm on the outer peripheral wall of the optical fiber;
secondly, one end of the optical fiber is bonded with a 1W LED lamp bead with the central wavelength of 370nm by ultraviolet curing glue;
then, the optical fiber is wound into a solenoid with a diameter of 3cm and a length of 5cm, 25 strings of the above-mentioned photocatalytic solenoids are arranged in a 5 × 5 array with a central phase of 6cm at intervals, and a fan 2 is arranged at one end to form a volatile organic pollutant degradation device.
The device is placed in a 0.5 cubic meter closed glove box, 10PPM formaldehyde is filled in the glove box, the fan 2 is started, and the LED is started. After 1 hour, the gas in the glove box is sampled, and the concentration of formaldehyde is reduced to 4.5PPM through chromatographic detection, so that the degradation of the polluted gas is effectively realized.
Experiment three
The hydrogen is produced by photolyzing water by using the optical waveguide photocatalytic device in FIG. 7, and the test process is as follows:
first, 1.6 g of Fe (NO) was added3)3·9H2Dissolving O in 60 ml of distilled water to obtain an iron nitrate aqueous solution, adding 800 ml of absolute ethyl alcohol and 80 ml of glacial acetic acid to prepare a mixed solution, adding 200 ml of tetrabutyl titanate into 800 ml of absolute ethyl alcohol to prepare a solution, dropwise adding the latter solution into the mixed solution, stirring for 2 hr to obtain clear yellowish sol, coiling quartz fiber with diameter of 1.0mm and length of 5m, heating and cleaning with anhydrous ethanol in an ultrasonic cleaning machine, washing with distilled water, soaking the fiber substrate 12' in the sol, taking out after half an hour, aging in a clean container for 48 hr, then, the fiber substrate is placed in an oven, dried for 48 hours at the temperature of 80 ℃, finally placed in a tube furnace, and annealed for 3 hours at the temperature of 480 ℃, so that a photocatalytic material layer with the thickness of 100nm can be formed on the outer peripheral wall of the fiber substrate 12';
secondly, adhering 31 ends of the optical fiber substrates 12 'which are not immersed in the sol to the bottom end of a light-gathering cone 4 with the diameter of 7cm at the bottom end, the diameter of 20cm at the upper end and the height of 20cm by using ultraviolet curing glue in a dense arrangement mode, winding the part of the optical fiber substrates 12' which are immersed in the sol and coated with a photocatalytic material layer into a solenoid with the diameter of 3cm and the length of 5cm, putting 31 strings of the photocatalytic solenoid into water, and tracking the sun by using a solar tracker by using the light-gathering cone 4 to form a solar energy water-splitting hydrogen production device;
when sunlight enters the light-gathering cone 4 and then is totally reflected on the side surface of the light-gathering cone 4, due to the light-gathering effect of the light-gathering cone 4, the light intensity coupled into the optical fiber can obtain about 5 times of gain. After the irradiation of the sunlight for 5 minutes, small bubbles begin to appear on the optical fiber and continuously emerge, and the hydrogen/oxygen-2/1 photolysis water product is formed in the bubbles through chromatographic sampling analysis, so that the hydrogen production by solar energy photolysis water is realized.
Obviously, the above mentioned dimensions are exemplary, and in practical applications, the dimensional parameters of each component can be adjusted appropriately as long as the photocatalytic degradation of organic pollutants, hydrogen production by water photolysis or CO photolysis can be ensured2The reaction effect of the photocatalytic reduction is only needed.
The present invention provides an optical waveguide photocatalytic device, which is described in detail above, and the principle and the embodiments of the present invention are explained herein by using specific examples, and the descriptions of the above examples are only used to help understanding the method and the core concept of the present invention. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.

Claims (13)

1. An optical waveguide photocatalytic device, characterized by comprising at least one optical waveguide catalytic component (1), wherein the optical waveguide catalytic component (1) comprises an optical waveguide substrate, at least a partial area of the outer wall of the optical waveguide substrate is coated with a photocatalytic material (11), the optical waveguide substrate is capable of receiving a light source, and the light emitted by the light source can be totally reflected inside the optical waveguide substrate.
2. The optical waveguide photocatalytic device according to claim 1, characterized in that the optical waveguide substrate is a slab waveguide substrate (12), the photocatalytic material (11) is coated on the upper and lower side walls of the slab waveguide substrate (12), and a reflective member is adhered to the end wall of the slab waveguide substrate (12) except for the area for receiving the light source.
3. The optical waveguide photocatalytic device according to claim 2, wherein the reflecting member is an aluminum foil reflecting sheet.
4. The optical waveguide photocatalytic device according to claim 1, characterized in that the optical waveguide substrate is a columnar optical fiber substrate (12'), and the photocatalytic material (11) is coated on the peripheral wall of the optical fiber substrate (12').
5. The optical waveguide photocatalytic device according to claim 4, characterized in that the fiber substrate (12') is wound to form a solenoid structure.
6. The optical waveguide photocatalysis device of claim 2 or 3, wherein the light source is an LED lamp assembly (3) which comprises an LED lamp strip (31) and a plurality of LED patch lamp beads (32) fixed on the LED lamp strip (31), and the LED lamp assembly (3) is adhered to the end wall of one end of the flat waveguide substrate (12).
7. An optical waveguide photocatalytic device according to claim 4 or 5, characterized in that the light source is an LED lamp bead (5), and the LED lamp bead (5) is adhered to one end of the optical fiber substrate (12').
8. The optical waveguide photocatalytic device according to any one of claims 1 to 5, characterized in that the number of the optical waveguide catalytic assemblies (1) is plural, a plurality of the optical waveguide catalytic assemblies (1) are arranged in parallel, and a predetermined distance is provided between two adjacent optical waveguide catalytic assemblies (1).
9. The optical waveguide photocatalytic device according to the claim 8, characterized by further comprising a fan (2), wherein the fan (2) is arranged at one end of the optical waveguide catalytic assembly (1).
10. An optical waveguide photocatalytic device according to claim 4 or 5, characterized in that the light source is sunlight, and further comprises a light-gathering cone (4), one end of the optical fiber substrate (12') is adhered to the bottom end of the light-gathering cone (4), and the sunlight enters the optical fiber substrate (12') through the light-gathering cone (4).
11. The optical waveguide photocatalytic device according to claim 10, characterized in that the number of the optical fiber substrates (12') is plural, a plurality of the optical fiber substrates (12') are arranged in parallel and uniformly, and one end of the optical fiber substrates (12') is adhered to the bottom end of the light-gathering cone (4) in a dense arrangement.
12. An optical waveguide photocatalytic device according to claim 10, characterized in that the light converging cone (4) is a circular truncated cone structure, the small end of which is used for connecting with the optical fiber substrate (12'), and the large end of which is used for receiving solar rays.
13. A light guide photocatalytic device according to claim 12, characterized by further comprising a power device for driving the light converging cone (4) so that the end of the light converging cone (4) receiving the sunlight can face the sun.
CN202011452882.7A 2020-12-11 2020-12-11 Optical waveguide photocatalysis device Pending CN112546986A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202011452882.7A CN112546986A (en) 2020-12-11 2020-12-11 Optical waveguide photocatalysis device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011452882.7A CN112546986A (en) 2020-12-11 2020-12-11 Optical waveguide photocatalysis device

Publications (1)

Publication Number Publication Date
CN112546986A true CN112546986A (en) 2021-03-26

Family

ID=75061769

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202011452882.7A Pending CN112546986A (en) 2020-12-11 2020-12-11 Optical waveguide photocatalysis device

Country Status (1)

Country Link
CN (1) CN112546986A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114288957A (en) * 2022-01-07 2022-04-08 浙江大学 Photochemical continuous flow synthesis device and method based on light guide plate

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09299937A (en) * 1996-05-09 1997-11-25 Daikin Ind Ltd Treating device for material
WO2001008787A1 (en) * 1999-08-03 2001-02-08 Volkswagen Aktiengesellschaft Device for the photocatalytic conversion of exhaust gas in an exhaust gas cleaning system
WO2007059573A1 (en) * 2005-11-22 2007-05-31 Queensland University Of Technology Fluid purification using photocatalysis
CN101121114A (en) * 2007-07-24 2008-02-13 西北大学 Continuous mobile type purifying air and water nano-crystalline photocatalysis reactor
TW200817086A (en) * 2006-08-04 2008-04-16 Viva Blu Pty Ltd Method and apparatus for effecting a chemical reaction
FR2910341A1 (en) * 2006-12-20 2008-06-27 Cedric Brochier Soieries Soc R Textile web for air conditioning system, has optical fibers with free end arranged opposite to light source for transmitting light and laterally emitting light at level of invasive deformation to activate photocatalytic particles
CN202021048U (en) * 2011-01-25 2011-11-02 北京师范大学 Optical fiber photocatalytic reactor of loaded titanium dioxide photonic crystal films
CN102407074A (en) * 2011-12-07 2012-04-11 河南理工大学 Micro-structural optical fiber formaldehyde purifying system and micro-structural optical fiber formaldehyde purifying device
CN103170240A (en) * 2013-02-27 2013-06-26 西安交通大学 Air quality monitoring and purifying device in closed space
CN203853080U (en) * 2014-05-08 2014-10-01 湖北工业大学 Optical fiber photocatalytic reaction system
CN105664817A (en) * 2016-03-14 2016-06-15 中国神华能源股份有限公司 Optical fiber type photo-catalytic reactor and method for converting CO2 into methyl alcohol
CN110585904A (en) * 2019-08-30 2019-12-20 浙江工业大学 Device for photo-thermal catalytic degradation of indoor volatile organic compounds
CN111266070A (en) * 2020-04-12 2020-06-12 兰州交通大学 Photo-catalytic device with photo-thermal coupling effect

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09299937A (en) * 1996-05-09 1997-11-25 Daikin Ind Ltd Treating device for material
WO2001008787A1 (en) * 1999-08-03 2001-02-08 Volkswagen Aktiengesellschaft Device for the photocatalytic conversion of exhaust gas in an exhaust gas cleaning system
WO2007059573A1 (en) * 2005-11-22 2007-05-31 Queensland University Of Technology Fluid purification using photocatalysis
TW200817086A (en) * 2006-08-04 2008-04-16 Viva Blu Pty Ltd Method and apparatus for effecting a chemical reaction
FR2910341A1 (en) * 2006-12-20 2008-06-27 Cedric Brochier Soieries Soc R Textile web for air conditioning system, has optical fibers with free end arranged opposite to light source for transmitting light and laterally emitting light at level of invasive deformation to activate photocatalytic particles
CN101121114A (en) * 2007-07-24 2008-02-13 西北大学 Continuous mobile type purifying air and water nano-crystalline photocatalysis reactor
CN202021048U (en) * 2011-01-25 2011-11-02 北京师范大学 Optical fiber photocatalytic reactor of loaded titanium dioxide photonic crystal films
CN102407074A (en) * 2011-12-07 2012-04-11 河南理工大学 Micro-structural optical fiber formaldehyde purifying system and micro-structural optical fiber formaldehyde purifying device
CN103170240A (en) * 2013-02-27 2013-06-26 西安交通大学 Air quality monitoring and purifying device in closed space
CN203853080U (en) * 2014-05-08 2014-10-01 湖北工业大学 Optical fiber photocatalytic reaction system
CN105664817A (en) * 2016-03-14 2016-06-15 中国神华能源股份有限公司 Optical fiber type photo-catalytic reactor and method for converting CO2 into methyl alcohol
CN110585904A (en) * 2019-08-30 2019-12-20 浙江工业大学 Device for photo-thermal catalytic degradation of indoor volatile organic compounds
CN111266070A (en) * 2020-04-12 2020-06-12 兰州交通大学 Photo-catalytic device with photo-thermal coupling effect

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
卢智远，朱满座，侯建强: "《普通高等教育电子信息类十三五规划教材 电磁场与电磁波教程》", 31 March 2020 *
李德春，宋鹏，滕冰: "《光波导基础教程》", 31 August 2018 *
李春生，林中，李琳莹: "《FTTx ODN技术与应用》", 31 October 2016 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114288957A (en) * 2022-01-07 2022-04-08 浙江大学 Photochemical continuous flow synthesis device and method based on light guide plate

Similar Documents

Publication Publication Date Title
Wu Photocatalytic reduction of greenhouse gas CO 2 to fuel
Sun et al. TiO2-coated optical fiber bundles used as a photocatalytic filter for decomposition of gaseous organic compounds
Zhou et al. Kinetic studies for photocatalytic degradation of Eosin B on a thin film of titanium dioxide
CN103100386B (en) Preparation method of monolithic catalyst for degrading VOCS (Volatile Organic Compounds)
CN101288839B (en) Light-transmitting tubular honeycomb type photocatalytic reactor
US20080308405A1 (en) Optical Fiber Photocatalytic Reactor And Process For The Decomposition Of Nitrogen Oxide Using Said Reactor
JP3383932B2 (en) Photocatalyst device
Ling et al. Coupling light emitting diodes with photocatalyst-coated optical fibers improves quantum yield of pollutant oxidation
JP2001502220A (en) Photocatalytic fluid purification device
EP2294002A2 (en) Improved process for producing hydrogen
US20060124442A1 (en) Device capable of removing contaminants from a fluid
CN112546986A (en) Optical waveguide photocatalysis device
Plantard et al. Kinetic and efficiency of TiO2-coated on foam or tissue and TiO2-suspension in a photocatalytic reactor applied to the degradation of the 2, 4-dichlorophenol
WO2006080216A1 (en) Surface emitting device
CN104023755B (en) Light catalytic purifying medium
CN106582619B (en) Application of the manganese oxide composite reactive Carbon Materials in denitrogenation
CN101716531A (en) Polyethylene film loading type iron nitrogen co-doping titanium dioxide photocatalyst and preparation method thereof
EP3912702A1 (en) Glass or aluminum structure air filter using photocatalyst precoat and manufacturing method therefor
CN109876797A (en) A kind of catalyst and preparation method thereof in strong microwave ultraviolet field
CN202021048U (en) Optical fiber photocatalytic reactor of loaded titanium dioxide photonic crystal films
CN110280274B (en) Based on TiO2Wide-spectral-response photocatalytic material of array optical waveguide and preparation method and application thereof
Medina-Valtierra et al. Self-cleaning test of doped TiO2-coated glass plates under solar exposure
CN114130323B (en) Photocatalytic reaction system, preparation method thereof and method for improving utilization rate of photons and photocatalyst
JP4319090B2 (en) Surface light leakage optical waveguide and photocatalytic module
JP3268447B2 (en) Photoreaction device with built-in photoreaction tube

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

Application publication date: 20210326

RJ01 Rejection of invention patent application after publication