CN108364579B - Building safety warning board convenient to use at night - Google Patents
Building safety warning board convenient to use at night Download PDFInfo
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- CN108364579B CN108364579B CN201810137946.0A CN201810137946A CN108364579B CN 108364579 B CN108364579 B CN 108364579B CN 201810137946 A CN201810137946 A CN 201810137946A CN 108364579 B CN108364579 B CN 108364579B
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/33—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being semiconductor devices, e.g. diodes
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F13/00—Illuminated signs; Luminous advertising
- G09F13/20—Illuminated signs; Luminous advertising with luminescent surfaces or parts
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F27/00—Combined visual and audible advertising or displaying, e.g. for public address
- G09F27/007—Displays with power supply provided by solar cells or photocells
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
- H01G9/20—Light-sensitive devices
- H01G9/2027—Light-sensitive devices comprising an oxide semiconductor electrode
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
- H01G9/20—Light-sensitive devices
- H01G9/2027—Light-sensitive devices comprising an oxide semiconductor electrode
- H01G9/2031—Light-sensitive devices comprising an oxide semiconductor electrode comprising titanium oxide, e.g. TiO2
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F27/00—Combined visual and audible advertising or displaying, e.g. for public address
- G09F2027/002—Advertising message recorded in a memory device
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- 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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/10—Photovoltaic [PV]
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- 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
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/542—Dye sensitized solar cells
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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Abstract
The invention relates to a building safety warning board convenient to use at night, which comprises a supporting rod, wherein the top of the supporting rod is fixedly connected with a supporting plate, and the top of the supporting plate is fixedly connected with a warning board; the positive fixedly connected with display of notice board, the front of notice board and the bottom fixedly connected with speaker that is located the display, the right side at the positive top of notice board has fixedly connected with photosensitive sensor and decibel inductor from a left side to the right side in proper order, the top swing joint of notice board has solar cell panel, solar cell panel is dye-sensitized solar cell, dye-sensitized solar cell includes the photo anode, the photo anode includes the FTO basement, is equipped with TiO basement surface at the FTO basement surface2Composite layer of TiO2The surface of the composite material layer is adsorbed with dye; the TiO is2The composite material layer comprises Pt/In2O3/TiO2The nuclear shell hollow sphere.
Description
Technical Field
The invention relates to the technical field of building safety equipment, in particular to a building safety warning board convenient to use at night.
Background
At present, in the building work progress, the safety warning sign is usually all built to the building periphery, in order to strengthen construction safety, avoid building material landing to hinder and constructor, present traditional building safety warning sign, prompt facility is all too single, and do not possess the warning function night, if will play the warning effect night, must carry out electric power to the sign for a long time and provide, greatly increased use cost like this, and the warning effect is relatively poor, unnecessary accident probably appears, for this reason, we propose a building safety warning sign for night.
Disclosure of Invention
The invention aims to provide a building safety warning board convenient to use at night, and aims to solve the problems.
The embodiment of the invention provides a building safety warning board convenient to use at night, which comprises a supporting rod, wherein the top of the supporting rod is fixedly connected with a supporting plate, and the top of the supporting plate is fixedly connected with a warning board; the intelligent prompting board comprises a prompting board body, a display, a loudspeaker, a photosensitive sensor and a decibel sensor, wherein the display is fixedly connected to the front of the prompting board body, the loudspeaker is fixedly connected to the front of the prompting board body and is located at the bottom of the display, the photosensitive sensor and the decibel sensor are fixedly connected to the right side of the front top of the prompting board body from left to right in sequence, a solar cell panel is movably connected to the top of the prompting board body, a base is fixedly connected to the bottom of a supporting rod, a power supply block is fixedly connected to the top of an inner cavity of the prompting board body, a single chip microcomputer is fixedly connected to the bottom of the power supply; the output end of the solar cell panel is unidirectionally and electrically connected with the input end of the power supply block, the output end of the power supply block is unidirectionally and electrically connected with the input end of the single chip microcomputer, the output ends of the photosensitive sensor and the decibel sensor are unidirectionally and electrically connected with the input end of the single chip microcomputer, the output end of the memory bank is unidirectionally and electrically connected with the input end of the single chip microcomputer, and the output end of the single chip microcomputer is unidirectionally and electrically connected with the input ends of the display and the loudspeaker respectively;
the solar cell panel is a dye-sensitized solar cell, the dye-sensitized solar cell comprises a photo-anode, the photo-anode comprises an FTO substrate, and TiO is arranged on the surface of the FTO substrate2Composite layer of TiO2The surface of the composite material layer is adsorbed with dye; the TiO is2The composite material layer comprises Pt/In2O3/TiO2The nuclear shell hollow sphere.
The technical scheme provided by the embodiment of the invention can have the following beneficial effects:
1. the supporting rod, the supporting plate, the prompting board, the display, the loudspeaker, the photosensitive sensor, the decibel sensor, the solar cell panel, the base, the power supply block, the single chip microcomputer and the memory strip are arranged and used in a matched mode, and therefore the problem that the traditional building safety warning board is single in prompting function and high in use cost due to the fact that a large amount of electric energy is consumed in the using process is solved; through having set up the characters notice board, and the characters suggestion of having posted on the characters notice board, convenient daytime reminds construction worker, through having set up fluorescent coating, when there is light irradiation characters notice board night, can give out light, through having set up the LED display screen, display effect has been improved, through having set up the glass frame, place inside the dust of building site falls into the display, the cleanness of display has been guaranteed, prevent rainy day, the rainwater falls on the display, the life of display has been prolonged, through having set up data transmission mouth, the person of facilitating the use is like inside transmission safety notice icon and the voice prompt recording of notice board, through having set up sill pillar and pulley, safety warning board mobility has been improved, through having set up the stabilizer bar, the stability of this safety warning board is improved, through having set up hanging buckle and hanging the groove, convenient receiving and releasing.
2. In the dye-sensitized solar cell, the photo-anode adopts Pt/In2O3/TiO2Core-shell hollow by reaction with TiO2In is arranged inside the hollow ball2O3The nano particles and the Pt nano particles generate a plasma enhancement effect, so that the photocurrent density is increased, and meanwhile, the range of an absorption peak is expanded, and unexpected technical effects are generated.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention. It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention, as claimed.
Drawings
The invention is further illustrated by means of the attached drawings, but the embodiments in the drawings do not constitute any limitation to the invention, and for a person skilled in the art, other drawings can be obtained on the basis of the following drawings without inventive effort.
FIG. 1 is a schematic structural diagram of a building safety warning board according to an embodiment of the present invention;
FIG. 2 is a front view of the building safety warning sign according to an embodiment of the present invention;
fig. 3 is a system schematic diagram of the building safety warning board according to the embodiment of the present invention.
In the figure: the solar energy mobile phone comprises a support rod 1, a support plate 2, a prompt board 3, a display 4, a text prompt board 5, a loudspeaker 6, a photosensitive sensor 7, a decibel sensor 8, a glass frame 9, a solar panel 10, a base 11, a bottom column 12, a pulley 13, a stabilizer bar 14, a hanging buckle 15, a hanging groove 16, a power supply block 17, a single chip microcomputer 18, a memory bank 19 and a data transmission port 20.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the invention, as detailed in the appended claims.
With reference to fig. 1, 2 and 3, the embodiment of the invention relates to a building safety warning board convenient for night use, which comprises a supporting rod 1, wherein the top of the supporting rod 1 is fixedly connected with a supporting plate 2, and the top of the supporting plate 2 is fixedly connected with a warning board 3;
the front of the notice board 3 is fixedly connected with a display 4, the display 4 is an LED display screen, the surface of the display 4 is movably connected with a glass frame 9, the right side of the notice board 3 is provided with a data transmission port 20, the display effect is improved by arranging the LED display screen, dust placed in a construction site falls into the display 4 by arranging the glass frame 9, the cleanness of the display 4 is ensured, rain is prevented from falling on the display 4, the service life of the display 4 is prolonged, a user can conveniently transmit a safety prompt icon and a voice prompt recording inside the notice board 3 by arranging the data transmission port 20, the text prompt boards 5 are fixedly connected with the front of the notice board 3 and positioned at the two sides of the display 4, the surface of the text prompt boards 5 is provided with a fluorescent coating, the text prompt boards 5 are arranged, and text prompts are pasted on the text prompt boards 5, the reminding device is convenient for reminding construction workers in daytime, and can give out light when light irradiates the text reminding board 5 at night by arranging the fluorescent coating, the front side of the reminding board 3 and the bottom of the display 4 are fixedly connected with the loudspeaker 6, the right side of the front top of the reminding board 3 is fixedly connected with the photosensitive sensor 7 and the decibel sensor 8 from left to right in sequence, the top of the reminding board 3 is movably connected with the solar cell panel 10, the bottom of the supporting rod 1 is fixedly connected with the base 11, the top of the inner cavity of the reminding board 3 is fixedly connected with the power block 17, the inner cavity of the reminding board 3 and the bottom of the power block 17 are fixedly connected with the singlechip 18, the inner cavity of the reminding board 3 and the right side of the singlechip 18 are fixedly connected with the memory strip 19, the two sides of the bottom of the base 11 are fixedly connected with the bottom columns 12, the bottom of the bottom columns 12 is movably connected with the, the mobility of the safety warning board is improved, the stabilizer bars 14 are movably connected to the bottoms of the two sides of the bottom column 12, the bottom of each stabilizer bar 14 is fixedly connected with the hanging buckle 15, the hanging grooves 16 are formed in the bottoms of the bases 11 and the two sides of the bottom column 12, the stabilizer bars 14 are arranged, the stability of the safety warning board is improved, and the hanging buckles 15 and the hanging grooves 16 are arranged to facilitate the retraction of the stabilizer bars 14.
The output end of the solar cell panel 10 is electrically connected with the input end of the power supply block 17 in a one-way mode, the output end of the power supply block 17 is electrically connected with the input end of the single chip microcomputer 18 in a one-way mode, the output ends of the photosensitive sensor 7 and the decibel sensor 8 are electrically connected with the input end of the single chip microcomputer 18 in a one-way mode, the output end of the memory bank 19 is electrically connected with the input end of the single chip microcomputer 18 in a one-way mode, and the output end of the single chip microcomputer 18 is electrically connected with.
When the solar energy safety warning device is used, the display 4 is arranged, the corresponding construction safety warning icon can be displayed through the display 4, a user does not need to frequently replace the safety icon, a large number of safety icons and voice safety warning records can be stored in the memory bar 19 through the loudspeaker 6, workers can be reminded through the loudspeaker 6, the display 4 and the loudspeaker 6 are in a standby state when sunlight is sufficient in the daytime through the photosensitive sensor 7, energy is saved, the use cost is reduced through the arrangement of the solar cell panel 10 and the absorption of solar energy through the arrangement of the single chip 18, data can be processed and fed back through the single chip 18 when decibel sensors 8 sense forty at night, the practicability of the safety warning board is improved.
This building safety warning sign for night through bracing piece 1, backup pad 2, notice board 3, display 4, speaker 6, photosensitive sensor 7, decibel inductor 8, solar cell panel 10, base 11, power supply block 17, singlechip 18 and the cooperation of memory strip 19, has solved traditional building safety warning sign, and prompt facility is single, and consumes a large amount of electric energy in the use to use cost's problem has been increased.
Preferably, the solar cell panel 10 is a dye-sensitized solar cell, which can provide electric energy for the operation of the warning board, and the dye-sensitized solar cell has the advantages of simple manufacture and low cost, and the dye sensitizer can reach a saturated state under various illuminations, so that the solar cell has strong environmental adaptability, wide working temperature range and strong adaptability. A dye-sensitized solar cell generally includes a counter electrode, a photo-anode, and an electrolyte layer. The photoanode, also known as the working electrode, typically comprises a thin film of semiconducting oxide, most typically coated with 20-30nm TiO on FTO glass2A 10 μm film composed of nanoparticles. It is the core component of the cell, the sensitizer being adsorbed on the TiO2And the nano film is used for absorbing sunlight. At present, the dye-sensitized solar cell still can not meet the requirement of industrial production, and TiO2The photoanode is a key factor for determining the photoelectric conversion efficiency of the solar cell as a core component of the DSSCs, so that the TiO is improved by adopting diversified preparation technologies and methods such as doping and compounding2The effective utilization rate of the photoanode to sunlight and the improvement of the photoelectric conversion efficiency are important development directions of the DSSCs at present.
The dye-sensitized solar cell includes a counter electrode, a photo-anode opposed to the counter electrode, and electricity held between the counter electrode and the photo-anodeAnd (5) decomposing the layer. The electrolyte layer is an electrolyte solution in which a redox system is dissolved, wherein the redox system causes at least one reversible redox state change, e.g. the redox couple may be I-/I3 -、Br-/Br2Halogens, copper (I) ion/copper (II) ion, and the like; the counter electrode is a Pt counter electrode; the photo-anode comprises an FTO substrate, and TiO is arranged on the surface of the FTO substrate2Composite layer of TiO2The surface of the composite material layer is adsorbed with dye.
Titanium dioxide is a direct band gap semiconductor transition metal oxide with a forbidden band width of 3.2eV at room temperature, and has many practical applications. The preparation method has wide application in the traditional fields such as pigments, toothpaste, coatings, and recently rapidly developed photoelectrochemical cells, dye-sensitized solar cells, photocatalysis, antibiosis, gas sensors, field emission devices, microwave absorption materials and the like. In the prior art, TiO2The film is the main considered object of DSSCs photoanode film, TiO2Has better physical and chemical stability, strong acid and alkali corrosion resistance and nano-sized TiO2The material shows excellent performance in charge transfer separation, dye adsorption and the like. TiO prepared by various methods2Thin films have attempted to be applied to photoelectrodes such as control of nanotopography, ion doping, semiconductor compounding, noble metal modification, and the like.
Specifically, in the present embodiment, the TiO is2The thickness of the composite material layer is 5 mu m; the TiO is2The composite material layer comprises Pt/In2O3/TiO2Hollow core-shell spheres of which TiO is2Hollow sphere as shell structure, Pt nanoparticles, In2O3Nanoparticles as core structure coated with TiO2And (4) coating the hollow spheres. Indium oxide is also an important semiconductor material, has a wide forbidden band width, a small resistance, a low electron affinity, a high conductivity and a high catalytic activity, and is widely applied to the fields of photoelectricity, gas sensing, catalysts and the like. In the technical scheme of the invention, the method comprises the step of adding TiO into2In is arranged inside the hollow ball2O3Nanoparticles, Pt nanoparticles, creating plasmaThe daughter enhancement effect is beneficial to increasing the photocurrent density, and simultaneously, the range of the absorption peak is expanded, and unexpected technical effects are generated.
Specifically, in the present embodiment, the TiO is2The particle size of the hollow sphere is 500nm, and the Pt nano-particles and In are2O3The particle size of the nano particles is 20 nm; in the TiO2In the composite material, the Pt nano-particles/TiO22.7% by mass of In2O3nanoparticle/TiO2The mass ratio is 7.3%. At the above-mentioned size and mass ratio, the TiO2The composite material has unexpected technical effect, can effectively reduce the recombination probability of photon-generated carriers, and has positive influence on the improvement of photoelectric conversion efficiency and short-circuit current density.
In the scheme, the preparation process of the photo-anode comprises the following steps:
The present invention will be described in detail by way of examples. It is also to be understood that the following examples are illustrative of the present invention and are not to be construed as limiting the scope of the invention, and that certain insubstantial modifications and adaptations of the invention by those skilled in the art may be made in light of the above teachings. The specific process parameters and the like of the following examples are also only one example of suitable ranges, i.e., those skilled in the art can select the appropriate ranges through the description herein, and are not limited to the specific values exemplified below.
Example 1
In this embodiment, the photo-anode of the dye-sensitized solar cell includes an FTO substrate, and TiO is disposed on a surface of the FTO substrate2Composite layer of TiO2The surface of the composite material layer is adsorbed with dye.
In particular, the TiO2The thickness of the composite layer was 5 μm.
The TiO being2The composite material layer comprises Pt/In2O3/TiO2Hollow core-shell spheres of which TiO is2Hollow sphere as shell structure, Pt nanoparticles, In2O3Nanoparticles as core structure coated with TiO2And (4) coating the hollow spheres.
In particular, the TiO2The particle size of the hollow sphere is 500nm, and the Pt nano-particles and In are2O3The particle size of the nano particles is 20 nm; the Pt nanoparticles/TiO22.7% by mass of In2O3nanoparticle/TiO2The mass ratio is 7.3%.
The preparation process of the photo-anode comprises the following steps:
s1 preparation of TiO2The hollow sphere precursor:
mixing 150ml ethanol and 100ml acetonitrile, adding 1.04g ultrapure water, adding 0.4g ammonia water solution with the mass fraction of 25 wt.%, adding 5ml isopropyl titanate under rapid stirring, and continuously stirring for 12h to obtain TiO2The hollow sphere precursor is centrifugally washed for 3 times by ethanol solution, and finally, the precipitate is centrifugally washed for 3 times by ultrapure water to obtain TiO2A hollow sphere precursor;
s2, preparation of In2O3Nanoparticles
0.19g of water and indium nitrate (In (NO)3)3·4.5H2O) solid powder is dissolved In 20ml of dimethylformamide to form a mixed solution, the mixed solution is stirred for 30min at room temperature, 0.6g of urea is added into the mixed solution, the mixed solution is continuously stirred for 3h, then the mixed solution is sealed, the mixed solution is heated for 24h at 110 ℃, after the reaction is finished, the mixed solution is naturally cooled, then the mixed solution is sequentially washed by deionized water and absolute ethyl alcohol, centrifuged and cleaned for 5 times, the centrifuged product is dried and then put into a muffle furnace to be respectively annealed for 3h and 5h at 250 ℃ and 550 ℃, and In is obtained2O3A nanoparticle;
s3, preparation of Pt/In2O3/TiO2Core-shell hollow ball
Taking 10ml of H with the concentration of 5mM2PtCl6·6H2O, adding the mixture into 190ml of ultrapure water under vigorous stirring, and then adding the TiO according to the mass ratio2Hollow sphere precursor, In2O3Nano particles to obtain suspension, stirring for 6 hours at room temperature, centrifuging, collecting precipitate, and drying for 5 hours at room temperature;
dispersing the dried precipitate in 40ml of ultrapure water, adding 0.17g of ammonium fluoride into the ultrapure water, stirring for 2 hours, adding 0.18g of polyvinylpyrrolidone, continuously stirring for 3 hours, transferring the mixture into a polytetrafluoroethylene reaction kettle, keeping the temperature of the reaction kettle at 120 ℃ for 5 hours to crystallize and etch the product, and obtaining a solution A after the reaction is finished;
5ml of 10mM sodium citrate, 3ml of 10mM sodium borohydride and 160ml of ultrapure water are mixed to form a mixed solution, then the solution A is added, the mixture is stirred for 30 hours at 93 ℃, after the reaction is finished, the obtained precipitate is centrifugally washed by 1mM NaOH solution and ultrapure water, and then the mixture is annealed for 5 hours at 390 ℃ to obtain Pt/In2O3/TiO2A core-shell hollow sphere;
s4, preparing the photo-anode
0.24g of Pt/In2O3/TiO2Uniformly mixing the core-shell hollow sphere, 0.88g of terpineol and 1.5ml of absolute ethyl alcohol to obtain a mixture B;
then 0.15g of ethyl cellulose is taken and dissolved in absolute ethyl alcohol to prepare a viscous solution of 10 wt.%;
adding the viscous solution into the mixture B to obtain slurry C, then grinding the slurry C in a mortar for 20min, stirring and ultrasonically treating the slurry C in a magnetic stirring and ultrasonic cleaner for 30min respectively, spin-coating the slurry C on cleaned FTO glass by using a spin coater, and repeating the spin coating for several times to meet the thickness requirement of the working electrode film;
drying the coated FTO glass at 120 ℃ for 5h, then calcining at 250 ℃ for 5min, at 280 ℃ for 5min, at 340 ℃ for 50min, at 400 ℃ for 15min, and at 500 ℃ for 20 min;
and then soaking the FTO glass into a mixed solution of acetonitrile and tert-butyl alcohol of 0.05mM dye N-719, wherein the volume ratio of the acetonitrile to the tert-butyl alcohol is 1:1, standing for 24 hours, taking out and airing to obtain the photoanode.
The electrolyte layer is an electrolyte solution in which a redox system is dissolved, wherein the redox system causes at least one reversible redox state change, e.g. the redox couple may be I-/I3 -、Br-/Br2And halogens, copper (I) ion/copper (II) ion, and the like.
The counter electrode is a Pt counter electrode.
The photoelectric performance of the dye-sensitized solar cell is mainly represented by measuring the short-circuit current density-open-circuit voltage of the cell, the test is carried out under the irradiation of simulated standard sunlight, the performance of the obtained dye-sensitized solar cell is tested under the standard light source of AM1.5, the results are shown in Table 1, and the recording parameters comprise open-circuit voltage, short-circuit current and conversion efficiency, so that the dye-sensitized solar cell obtained in the embodiment 1 of the invention has higher photoelectric conversion efficiency.
Table 1 results of characterization of performance of example 1 solar cell
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, but rather as the subject matter of the invention is to be construed in all aspects and as broadly as possible, and all changes, equivalents and modifications that fall within the true spirit and scope of the invention are therefore intended to be embraced therein.
Claims (8)
1. A building safety warning board convenient to use at night comprises a supporting rod and is characterized in that a supporting plate is fixedly connected to the top of the supporting rod, and a warning board is fixedly connected to the top of the supporting plate; the intelligent prompting board comprises a prompting board body, a display, a loudspeaker, a photosensitive sensor and a decibel sensor, wherein the display is fixedly connected to the front of the prompting board body, the loudspeaker is fixedly connected to the front of the prompting board body and is located at the bottom of the display, the photosensitive sensor and the decibel sensor are fixedly connected to the right side of the front top of the prompting board body from left to right in sequence, a solar cell panel is movably connected to the top of the prompting board body, a base is fixedly connected to the bottom of a supporting rod, a power supply block is fixedly connected to the top of an inner cavity of the prompting board body, a single chip microcomputer is fixedly connected to the bottom of the power supply; the output end of the solar cell panel is unidirectionally and electrically connected with the input end of the power supply block, the output end of the power supply block is unidirectionally and electrically connected with the input end of the single chip microcomputer, the output ends of the photosensitive sensor and the decibel sensor are unidirectionally and electrically connected with the input end of the single chip microcomputer, the output end of the memory bank is unidirectionally and electrically connected with the input end of the single chip microcomputer, and the output end of the single chip microcomputer is unidirectionally and electrically connected with the input ends of the display and the loudspeaker respectively;
the solar cell panel is a dye-sensitized solar cell, the dye-sensitized solar cell comprises a photo-anode, the photo-anode comprises an FTO substrate, and TiO is arranged on the surface of the FTO substrate2Composite layer of TiO2The surface of the composite material layer is adsorbed with dye; the TiO is2The composite material layer comprises Pt/In2O3/TiO2A core-shell hollow sphere;
the TiO is2The composite material layer comprises Pt/In2O3/TiO2Hollow core-shell spheres of which TiO is2Hollow sphere as shell structure, Pt nanoparticles, In2O3Nanoparticles as core structure coated with TiO2Coating the hollow spheres;
the preparation process of the photo-anode comprises the following steps:
step 1, preparing TiO2The hollow sphere precursor: mixing 150ml ethanol and 100ml acetonitrile, adding 1.04g ultrapure water, adding 0.4g ammonia water solution with the mass fraction of 25 wt.%, adding 5ml isopropyl titanate under rapid stirring, and continuously stirring for 12h to obtain TiO2The hollow sphere precursor is centrifugally washed for 3 times by ethanol solution, and finally, the precipitate is centrifugally washed for 3 times by ultrapure water to obtain TiO2A hollow sphere precursor;
step 2, preparation of In2O3Nano-particles: 0.19g of water and indium nitrate (In (NO)3)3·4.5H2O) solid powder is dissolved In 20ml of dimethylformamide to form a mixed solution, the mixed solution is stirred for 30min at room temperature, 0.6g of urea is added into the mixed solution, the mixed solution is continuously stirred for 3h, then the mixed solution is sealed, the mixed solution is heated for 24h at 110 ℃, after the reaction is finished, the mixed solution is naturally cooled, then the mixed solution is sequentially washed by deionized water and absolute ethyl alcohol, centrifuged and cleaned for 5 times, the centrifuged product is dried and then put into a muffle furnace to be respectively annealed for 3h and 5h at 250 ℃ and 550 ℃, and In is obtained2O3A nanoparticle;
step 3, preparing Pt/In2O3/TiO2A core-shell hollow sphere: taking 10ml of H with the concentration of 5mM2PtCl6·6H2O, adding the mixture into 190ml of ultrapure water under vigorous stirring, and then adding the TiO according to the mass ratio2Hollow sphere precursor, In2O3Nano particles to obtain suspension, stirring for 6 hours at room temperature, centrifuging, collecting precipitate, and drying for 5 hours at room temperature; dispersing the dried precipitate in 40ml of ultrapure water, adding 0.17g of ammonium fluoride into the ultrapure water, stirring for 2 hours, adding 0.18g of polyvinylpyrrolidone, continuously stirring for 3 hours, transferring the mixture into a polytetrafluoroethylene reaction kettle, keeping the temperature of the reaction kettle at 120 ℃ for 5 hours to crystallize and etch the product, and obtaining a solution A after the reaction is finished; 5ml of 10mM sodium citrate, 3ml of 10mM sodium borohydride and 160ml of ultrapure water were mixed to form a mixed solution, and then the solution A was added thereto, stirred at 93 ℃ for 30 hours, reactedAfter completion, the resulting precipitate was washed centrifugally with a 1mM NaOH solution and ultrapure water, and then annealed at 390 ℃ for 5 hours to obtain Pt/In2O3/TiO2A core-shell hollow sphere;
step 4, preparing a photo-anode: 0.24g of Pt/In2O3/TiO2Uniformly mixing the core-shell hollow sphere, 0.88g of terpineol and 1.5ml of absolute ethyl alcohol to obtain a mixture B; then 0.15g of ethyl cellulose is taken and dissolved in absolute ethyl alcohol to prepare a viscous solution of 10 wt.%; adding the viscous solution into the mixture B to obtain slurry C, then grinding the slurry C in a mortar for 20min, stirring and ultrasonically treating the slurry C in a magnetic stirring and ultrasonic cleaner for 30min respectively, spin-coating the slurry C on cleaned FTO glass by using a spin coater, and repeating the spin coating for several times to meet the thickness requirement of the working electrode film; drying the coated FTO glass at 120 ℃ for 5h, then calcining at 250 ℃ for 5min, at 280 ℃ for 5min, at 340 ℃ for 50min, at 3400 ℃ for 15min, and at 500 ℃ for 20 min; and then soaking the FTO glass into a mixed solution of acetonitrile and tert-butyl alcohol of 0.05mM dye N-719, wherein the volume ratio of the acetonitrile to the tert-butyl alcohol is 1:1, standing for 24 hours, taking out and airing to obtain the photoanode.
2. The building safety warning board of claim 1, wherein the TiO is2The thickness of the composite layer was 5 μm.
3. The building safety warning board of claim 1, wherein the TiO is2The particle size of the hollow sphere is 500 nm.
4. The building safety warning board of claim 1, wherein the Pt nanoparticles, In2O3The particle size of the nanoparticles is 20 nm.
5. The building safety warning board of claim 1, wherein the TiO is in the area2In the composite material, the Pt nano-particles/TiO22.7% by mass of In2O3nanoparticle/TiO2The mass ratio is 7.3%.
6. The building safety warning board according to claim 1, wherein a text prompt board is fixedly connected to the front surface of the warning board and positioned on both sides of the display, and a fluorescent coating is arranged on the surface of the text prompt board; the display is an LED display screen, the surface swing joint of display has the glass frame, the right side of notice board is seted up has data transmission mouth.
7. The building safety warning board of claim 1, wherein bottom columns are fixedly connected to both sides of the bottom of the base, and pulleys are movably connected to the bottoms of the bottom columns.
8. The building safety warning board of claim 7, wherein the bottom of the bottom pillar is movably connected with a stabilizer bar, the bottom of the stabilizer bar is fixedly connected with a hanging buckle, and the bottom of the base and the two sides of the bottom pillar are provided with hanging grooves.
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| KR20140007113A (en) * | 2012-07-06 | 2014-01-17 | 서울대학교산학협력단 | Fabrication of forster resonance energy transfer based dye-sensitized solar cells containing water dispersible quantum dots |
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| WO2012124656A1 (en) * | 2011-03-11 | 2012-09-20 | 国際先端技術総合研究所株式会社 | Silicon dioxide solar cell |
| KR20140007113A (en) * | 2012-07-06 | 2014-01-17 | 서울대학교산학협력단 | Fabrication of forster resonance energy transfer based dye-sensitized solar cells containing water dispersible quantum dots |
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