CN103373750A - Light source device for removing organic matters and heavy metal ions by visible light and preparation method thereof - Google Patents
Light source device for removing organic matters and heavy metal ions by visible light and preparation method thereof Download PDFInfo
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- CN103373750A CN103373750A CN2012101176153A CN201210117615A CN103373750A CN 103373750 A CN103373750 A CN 103373750A CN 2012101176153 A CN2012101176153 A CN 2012101176153A CN 201210117615 A CN201210117615 A CN 201210117615A CN 103373750 A CN103373750 A CN 103373750A
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Abstract
The invention provides a light source device for removing organic matters and heavy metal ions by visible light. The light source device adopts a visible light LED (Light Emitting Diode) as a light source. The invention further provides a preparation method of the light source device for removing the organic matters and the heavy metal ions by the visible light. The light source device disclosed by the invention has high removing rate of the organic matters and the heavy metal ions, can be used for treating pollutants in water and can also be used for degrading the pollutants in the air; meanwhile, the light source device can also be used for common illumination. Compared with the prior art, the light source device has the advantages of high photocatalytic degradation rate, no pollution, long service life, low cost and the like, and is good for large-scale application and universalness of photocatalysis, and the preparation method is simple.
Description
Technical field
The present invention relates to water treatment and air purification field, be specifically related to a kind of light supply apparatus of removing organism and heavy metal ion.
Background technology
Along with the acceleration of socioeconomic high speed development and urbanization, the problems such as removal of objectionable impurities have caused national governments and people's great attention in the processing recycling of sewage and the air.Aspect environment harmful gas, the volatile organic matters such as thiomethyl alcohol that produce in the formaldehyde that indoor harmful gas such as finishing material etc. discharges and the living environment, the able person produces sense of discomfort even seldom measure also, and has a strong impact on the healthy of people.In addition, residual heavy metal ion is a kind of pollutent that usually discharges in the processes such as industry steel-making, metallurgy, mining and plating in the water body.Human body is excessively taken in heavy metal ion and may be caused serious mucous membrane inflammation, liver, kidney damage, capillary vessel infringement and produce the nervus centralis problem.Because heavy metal element can not be biodegradable, in case enter water body and soil, just be difficult to eliminate.Generally adopt traditionally Production by Catalytic Combustion Process, chemical oxidization method, biological degradation method etc. to remove organic pollutant and the heavy-metal ion removals such as employing Coagulation Method, neutralisation, electrolytic process, extraction process, absorption method, chemical reduction method, the precipitator method, electrochemical process, ion exchange method, membrane separation process, elution method and electroosmose process.But these methods have certain limitation, such as need add that reducing substance, treatment condition are just carved, treatment effect is not obvious, apparatus expensive and working cost are high, remove not exclusively, have secondary pollution to be difficult to the defectives such as cleaning.Therefore, find and to remove effectively that the method for organic pollutant and heavy metal ion has been extremely urgent eager task in the water and air.
Photocatalitic Technique of Semiconductor has been showed wide application prospect as a kind of novel environmental improvement technology in fields such as producing hydrogen, water treatment, various organic matter degradation and purifying air.This technology has the following advantages: can directly react under illumination, can effectively destroy many constitutionally stable bio-refractory organic pollutants, make them be degraded to carbonic acid gas and water etc.; Oxidation capacity is strong, and degraded does not thoroughly have selectivity to pollutent, any organism of almost can degrading, and non-secondary pollution; Energy consumption is low, and is easy and simple to handle, and catalyzer can reuse etc.Therefore, Photocatalitic Technique of Semiconductor is flourish and be expected to become 21 century environmental pollution control and the desirable technique of administering at nearly 30 years, and more and more causes investigator's attention.
Led light source has long lifetime, energy-saving and environmental protection, microminiaturization as a kind of novel light source, and the easy advantage such as accent of wavelength, for photocatalysis technology has brought possibility in the practical application of environmental science.
Patent documentation 1 (CN101456605) discloses a kind of LED nano-photo catalytic organic wastewater advanced treatment, this treatment unit comprises at least one ultraviolet LED light source plate and the nano photo-catalytic material of fitting with it, adopting wavelength region is the ultraviolet leds of 360～420 nm, eliminate deep ultraviolet composition that mercurous gas lamp produces to the equipment safety problem of injury and the mercury lamp explosion of human body, had energy-conservation, long service life, photocatalysis efficiency is high and to the beneficial effect of human body without the injury composition.
Patent documentation 2 (CN201907987U) discloses the device that a kind of led light source excitation nano catalytic material is processed water, this device adopts column LED integrated lamp photocatalytic nanometer compound catalyze material of 200～400 nm ultraviolet bands to process water, overcome adopt ultraviolet lamp tube or high voltage mercury lamp not high as the existing complex structure of excitation light source, launching efficiency, limited usefulness, the energy dissipation large and light source work-ing life short shortcoming of catalyzer to water treatment.
Patent documentation 3 (CN201640592U) discloses a kind of LED photocatalysis disinfection cap, be provided with the cap body of hollow internal layer, one side of described hollow internal layer is provided with ultraviolet LED array, the another side is provided with the reflector layer that is coated with titanium dioxide, described led array and reflector layer are corresponding to be arranged, the air that people's periphery is breathed carries out disinfection, purifies, sterilizes, and has the advantages such as energy consumption is low, sterilization effect is high, harmless.
Above-mentioned patent documentation 1 and 2, article adopt the ultraviolet LED nano-photo catalytic to process the device of water, this apparatus structure is relatively fixing complicated, only is suitable on a small scale water treatment applications, is difficult to adjust flexibly use.In addition, what patent documentation 1-3 adopted is the ultraviolet LED lamp, has the shortcomings such as with high costs, that use is inconvenient, harmful.Compare with white light LEDs, the luminous efficiency of ultraviolet LED light source is lower, causes the efficient of ultraviolet light irradiation low.
The research of pollutent now also occurred processing with solar radiation photocatalytic degradation, and obtained very large achievement, but the sunlight catalytic technology generally also is in the pilot scale stage, also has certain time apart from large-scale industrial production.And the present following defective for the treatment of unit ubiquity take sunlight as the catalysis light source: 1) present device can only adopt powder photocatalyst; 2) be subjected to the restriction of reaction vessel, can only be used for small-sized water treatment; 3) device more complicated.
Summary of the invention
The objective of the invention is for the problems referred to above; a kind of removal organism and light supply apparatus of heavy metal ion and preparation method thereof take visible LED as the catalysis light source is provided, have the photocatalytic activity height, pollution-free, the preparation method is simple, cost is low, be conducive to the advantages such as mass-producing utilization.
For achieving the above object, technical scheme provided by the invention is, a kind of visible light is removed the light supply apparatus of organism and heavy metal ion, and the light source of described light supply apparatus is the visible LED light source.
Preferably, described visible LED is that colour temperature is that high color temperature visible LED, the colour temperature of 7000-10000K is that colour temperature visible LED among the 5000-7000K, colour temperature are one or several in the low colour temperature visible LED light source of 3000-5000K.
Preferably, described radiation of light source wavelength is the visible continuously wave band of 400-700 nm.
Preferably, described led light source adopts single, many pointolites or planar light source to form.
Preferably, described visible LED light source is white LED light source.
Preferably, when described led light source was not established outer cover, its led chip was provided with one deck catalyzer rete; When described led light source was provided with outer cover, the outer cover of its led light source was provided with one deck catalyzer rete.
Preferably, the material of described catalyzer rete is CdS, CdSe, TiO
2-CdS, TiO
2-CdSe, ZnO-CdS, ZnO-CdSe, N-TiO
2, Bi
2O
3, BiOI, BiVO
4, BiWO
4, Bi
2MoO
6, InVO
4, InNbO
4, Ag
3PO
4, AgCl, AgBr, AgI, MoO
3, MoS
2, WO
3, Cu
2O, In
2O
3In one or more combination.
Preferably, described photocatalyst thicknesses of layers is 0.1 ~ 20 μ m.
The present invention also provides the preparation method of the light supply apparatus of this removal organism and heavy metal ion, and described preparation method may further comprise the steps:
The first step adopts microwave reaction synthesis method, water-bath chemical reaction method, spray pyrolysis, method of electrostatic spinning, ultrasonic reaction synthesis method or sol-gel method to prepare the photocatalyst of described light supply apparatus;
Second step, above-mentioned photocatalyst is coated on the led light source outer cover equably with silk screen printing, spin coating, spraying, chemical bath deposition or crystal pulling method forms film, carry out again heat treated under certain condition, form certain thickness catalyzer rete at the led light source outer cover.
Preferably, described led light source outer cover adopts transparent glass or organic polymer, comprises polycarbonate, polyethylene, polymethylmethacrylate.
Preferably, described be coated on the led light source outer cover photocatalyst pressure less than the vacuum condition of 100Pa under or heat-treat under the protection at rare gas element.
Preferably, the described thermal treatment temp of the photocatalyst on the led light source outer cover that is coated in is 120
oC ~ 500
oBetween the C, the time is 1 hour.
Preferably, the catalyst film layer thickness that forms at the led light source outer cover of described visible light catalyst is 0.1 ~ 20 μ m.
The present invention can decompose organic molecule or the heavy metal ion with the outer cover Surface Contact, plays the effect that purifies water and air, also can be used for general illumination simultaneously.
The organism that the present invention removes comprises: waste water from dyestuff (methylene blue, tropeolin-D, rhodamine B, Luo Dan-6G, ponceau, Whitfield's ointment, Acid Red G, solvent red 1, acid orange 7, DISPERSE NAVY BLUE EXSF 300﹠ BLUE 56 100); Agricultural chemicals waste water (weedicide, 2,4,5-Trichlorophenol, SD-1750, Trichlorphon, organophosphorus pesticide); Organic halogen; Other organism such as toluene, phenol, formaldehyde, polycyclic aromatic hydrocarbons etc.; The Pollutant levels scope is 0.1 ppm ~ 20 ppm.
The heavy metal ion that the present invention removes comprises: Cr (VI), Cu (II), Cd (II), Ag (II), Hg (II), Pb (II), Mn (II), Ni (II), Fe (III), Fe (II) etc., its concentration range is 0.1 ppm ~ 20 ppm.
The invention has the beneficial effects as follows that led light source of the present invention has higher organism and removal of heavy metal ions rate, both can be used for the processing of water pollutant, also can be used for the degraded of pollutants in air, also can be used for simultaneously general illumination.Compared with prior art, have the photocatalytic activity height, pollution-free, life-span is long, the preparation method is simple, low cost and other advantages, is conducive to light-catalysed mass-producing application and universalness.
Description of drawings
Fig. 1 is the synoptic diagram of led light source of the present invention.
Fig. 2 is the photocatalysis efficiency figure of the embodiment of the invention 1.
Fig. 3 is the photocatalysis efficiency figure of the embodiment of the invention 2.
Fig. 4 is the photocatalysis efficiency figure of the embodiment of the invention 3.
Fig. 5 is the photocatalysis efficiency figure of the embodiment of the invention 4.
Fig. 6 is the photocatalysis efficiency figure of the embodiment of the invention 5.
Fig. 7 is the photocatalysis efficiency figure of the embodiment of the invention 6.
The component names of digitized representation is among the figure:
1, led light source substrate 2, led chip 3, led light source outer cover 4, catalyzer rete
Embodiment
Below in conjunction with specific embodiment, further set forth the present invention.Should be understood that these embodiment only to be used for explanation the present invention and be not used in and limit the scope of the invention.Should be understood that in addition after having read content of the present invention, those skilled in the art can make various changes or modifications the present invention, these equivalent form of values fall within the attached claims restricted portion of the application equally.
A kind of visible light is removed the light supply apparatus of organism and heavy metal ion, adopts LED ball bubble form.It is the visible continuously wave band of 400-700 nm that light source adopts radiation wavelength, and colour temperature is: high color temperature 7000-10000 K, and middle colour temperature 5000-7000 K, each is a kind of for the white LED light source of low colour temperature 3000-5000 K.The structural representation of this light source as shown in Figure 1, led chip 2 is arranged on the led light source substrate 1, and led light source outer cover 3 covers on the led chip 2, and these led light source outer cover 3 outsides are coated with catalyzer rete 4, this led light source outer cover 3 can be sphere, rectangle or other curved surfaces or polyhedron.
Led light source outer cover 3 adopts polyethylene, then prepares TiO with crystal pulling method on the polyethylene outer cover
2-CdS photocatalyst film.
Its preparation may further comprise the steps:
1) preparation of photocatalyst
The thiourea solution of 10 ml, 0.1 mol/l is dripped at 10 ml, 0.1 mol/l Cd (NO
3)
2In the solution, at room temperature stir half an hour, then with a certain amount of TiO
2(P25) (TiO
2With the mass ratio of CdS be: 0.01:1; 0.03:1; 0.09:1; 0.12:1) put in the microwave tube of 35 ml, at room temperature stirred 1 hour, then put in the microwave reaction synthesizer, under 150 ° of C of temperature and power 100 W conditions, react and obtain TiO after 10 minutes
2-CdS photocatalyst.
2) application of led light source outer cover
Above-mentioned photocatalyst is dispersed in the ethanolic soln, is made into the solution that concentration is 5 mg/ml.Then form one deck photocatalyst film with crystal pulling method at the polyethylene outer cover, its pull rate is 30 mm/s.Last under the vacuum condition of pressure less than 100 Pa, temperature is 125
oDrying is 1 hour during C.TiO
2With the CdS mass ratio be 0.01:1,0.03:1, the TiO of 0.09:1 and 0.12:1
2-CdS photocatalyst is named as respectively: Film-1, Film-2, Film-3 and Film-4.
3) photochemical catalysis experiment
The led light source for preparing is put into the Cr that concentration is 10 ppm (VI) solution, and under the magnetic agitation condition, dark reaction was opened led light source after 30 minutes, carried out light-catalyzed reaction.Get at set intervals a certain amount of Cr (VI) solution, test with ultraviolet-visible spectrophotometer.
Under the different LED light source irradiation, the efficient of photochemical catalysis removal Cr (VI) ion is tested and is obtained:
1) such as Fig. 2 (a), shown the TiO of different mass ratio
2-The CdS photocatalyst is removed the different-effect (X-coordinate represents irradiation time among the figure, and ordinate zou represents the normalized concentration of Cr (VI) solution) of pollutent, is under the white LED light source irradiation of 6000 K in colour temperature, works as TiO
2When accounting for the CdS mass ratio and being 9%, the highest clearance of Cr (VI) ion is 96%;
2) such as Fig. 2 (b), shown that the white LED light source of different-colour shines down the different-effect of depollution thing, TiO
2-The CdS mass ratio is fixed as 9%, and when light source color temperature was 6000 K, the clearance of Cr (VI) ion was the highest, is 96%.
In the present embodiment, if led light source is not established outer cover, direct coated catalysts rete 2 on led chip then.
A kind of visible light is removed the light supply apparatus of organism and heavy metal ion, adopts LED ball bubble form.It is the visible continuously wave band of 400-700 nm that light source adopts radiation wavelength, and colour temperature is the white LED light source of 6000 K.
The outer cover of light source adopts polyethylene, then prepares Bi with crystal pulling method on the polyethylene outer cover
2O
3Photocatalyst film.
Its preparation may further comprise the steps:
1) preparation of photocatalyst
Na (OH) with 1M
2Solution slowly drips in the bismuth nitrate solution of 20 ml, 0.05 mol/l, so that the pH=9 of solution, then solution is put in the microwave tube of 35 ml, at room temperature stirred 1 hour, then put in the microwave reaction synthesizer, under 150 ° of C of temperature and power 100 W conditions, react and obtain Bi after 10 minutes
2O
3Photocatalyst.
2) application of led light source outer cover
Above-mentioned photocatalyst is dispersed in the ethanolic soln, is made into the solution that concentration is 5 mg/ml.Then form one deck photocatalyst film with crystal pulling method at the polymethylmethacrylate outer cover, its pull rate is 30 mm/s.Last under the vacuum condition of pressure less than 100 Pa, temperature is 125
oDrying is 1 hour during C.
3) photochemical catalysis experiment
The led light source for preparing is put into the Cu that concentration is 10 ppm (II) solution, and under the magnetic agitation condition, dark reaction was opened led light source after 30 minutes, carried out light-catalyzed reaction.Get at set intervals a certain amount of Cu (II) solution, test with atomic absorption spectrophotometer.
Such as Fig. 3, (X-coordinate represents irradiation time among the figure, and ordinate zou represents the normalized concentration of Cu (II) solution) is that the highest clearance of Cu (II) ion is 91% under the white LED light source irradiation of 6000 K in colour temperature.
A kind of visible light is removed the light supply apparatus of organism and heavy metal ion, adopts the led light source form of tubes, and radiation wavelength is the visible continuously wave band of 400-700 nm, and colour temperature is 6000 K.
1) fluorescent tube adopts Glass tubing, is coated with N-TiO in the tube outside
2Photocatalyst.Led light source is placed in an end, and the other end is reverberator, after the sealing, is used for the organic decomposition of solution;
2) fluorescent tube adopts Glass tubing, is coated with N-TiO in the tube outside
2Photocatalyst.Led light source can be used for purifying air a side (identical with existing lighting source lamp tube structure), also can be used for general illumination.
Its preparation may further comprise the steps:
1) preparation of photocatalyst
Get 4 ml butyl (tetra) titanates and dropwise drip formation A solution in 10 ml ethanol solutions, a certain amount of urea is dispersed in (N and TiO
2Mass ratio be: 0.05:1; 0.1:1; 0.2:1; 0.3:1) form B solution in the mixing solutions of 2 ml distilled water, 5 ml Glacial acetic acid and 7 ml dehydrated alcohols.Then B solution dropwise drips in A solution, stirs 4 hours under the normal temperature, obtains N-TiO
2Colloidal sol.
2) application of led light source outer cover
The outer cover of lamp is immersed in N-TiO
2Colloidal sol in, form one deck photocatalyst film with crystal pulling method at the outer cover of lamp, its pull rate is 30 mm/s.Carry out at last heat treated in air atmosphere, its thermal treatment temp is 500
oC, time are 1 hour.N and TiO
2Mass ratio is: 0.05:1; 0.1:1; 0.2:1; 0.3:1 N-TiO
2Photocatalyst is named as respectively: Film-1, Film-2, Film-3 and Film-4.
3) photochemical catalysis experiment
The led light source for preparing is put into the methyl orange solution that concentration is 15 ppm, and under the magnetic agitation condition, dark reaction was opened led light source after 30 minutes, carried out light-catalyzed reaction.Get at set intervals a certain amount of methyl orange solution, test with ultraviolet-visible spectrophotometer.
Such as Fig. 4, (X-coordinate represents irradiation time among the figure, ordinate zou represents the normalized concentration of methyl orange solution), be under the white LED light source irradiation of 6000 K in colour temperature, the efficient of photo-catalytic degradation of methyl-orange is tested and is obtained: when the doping ratio of N is 10%, the photocatalytic activity of tropeolin-D is the highest, is 90%.
A kind of visible light is removed the light supply apparatus of organism and heavy metal ion, adopts the led light source array format.The radiation of light source wavelength is the visible continuously wave band of 400-700 nm, and colour temperature is 8000 K.The outer cover of lamp adopts glass, surface-coated BiVO
4Photocatalyst.
Its preparation may further comprise the steps:
1) preparation of photocatalyst
The bismuth nitrate solution of 10 ml, 0.05 mol/l is dripped in 10 ml, 0.05 mol/l ammonium metavanadate solution, put in the microwave tube of 35 ml, at room temperature stirred 1 hour, then put in the microwave reaction synthesizer, under 150 ° of C of temperature and power 100 W conditions, react and obtain BiVO after 10 minutes
4Photocatalyst.
2) application of led light source outer cover
Get the BiVO of 2 g
4Put into mortar, grind 30 min, with Terpineol 350 and ethyl cellulose (mass ratio: 1:0.1) dropwise join in the mortar, ground 3 hours, be prepared into BiVO
4Slurry.With BiVO
4Slurry is evenly coated on the outer cover of lamp with the method for silk screen printing, then carries out heat treated in air atmosphere, and its thermal treatment temp is 500
oC, time are 1 hour, obtain BiVO
4Film.
3) photochemical catalysis experiment
It is 2,4 of 15 ppm that the led light source for preparing is put into concentration, and in the 5-Trichlorophenol solution, under the magnetic agitation condition, dark reaction was opened led light source after 30 minutes, carried out light-catalyzed reaction.Get at set intervals a certain amount ofly 2,4,5-Trichlorophenol solution is tested with ultraviolet-visible spectrophotometer.
Such as Fig. 5, (X-coordinate represents irradiation time among the figure, and ordinate zou represents the normalized concentration of 2,4,5-Trichlorophenol solution) is under the white LED light source irradiation of 8000 K in colour temperature, photocatalytic degradation 2,4, and the efficient of 5-Trichlorophenol solution reaches 95%.
Embodiment 5,
A kind of visible light is removed the light supply apparatus of organism and heavy metal ion, adopts the led light source array format.The radiation of light source wavelength is the visible continuously wave band of 400-700 nm, and colour temperature is 7000 K.The outer cover of lamp adopts glass, surface-coated TiO
2-CdS photocatalyst adopts array format, particularly can be used for large-scale water treatment or air purification field.
Its preparation may further comprise the steps:
1) preparation of photocatalyst
Get the TiO of 2 g
2(P25) put into mortar, grind 30 min, with Terpineol 350 and ethyl cellulose (mass ratio: 1:0.1) dropwise join in the mortar, ground 3 hours, be prepared into TiO
2Slurry.
2) application of led light source outer cover
With the method for P25 slurry with silk screen printing, be evenly coated on the outer cover of lamp, then in air atmosphere, carry out heat treated, its thermal treatment temp is 500
oC, time are 1 hour.Method with chemical bath deposition in P25 surface deposition CdS. concrete steps is at last: the Cd (NO that at first the P25 film is immersed in 0.5 M
3)
2In the ethanolic soln, the time is 5 min, dries up with nitrogen.Then film is immersed in the Na of 0.5 M
2(methyl alcohol: in the water=1:1), the time is 5 min, dries up with nitrogen for S methyl alcohol and the aqueous solution.This two steps experimentation is a circulation, and the P25 film is after soaking 13 circulations, and under the vacuum condition of pressure less than 100Pa, temperature is 125
oDrying is 1 hour during C, obtains TiO
2-CdS film.
3) photochemical catalysis experiment
The led light source for preparing is put into the formaldehyde container that concentration is 10 ppm, and under the condition that fan rotates, dark reaction was opened led light source after 30 minutes, carried out light-catalyzed reaction.Get at set intervals a certain amount of formaldehyde, test with methylene oxide detecting instrument.
Such as Fig. 6, (X-coordinate represents irradiation time among the figure, and ordinate zou represents the normalized concentration of formaldehyde gas) is that the efficient of formaldehyde degradation by photocatalytic oxidation process reaches 94% under the white LED light source irradiation of 7000 K in colour temperature.
Embodiment 6,
A kind of visible light is removed the light supply apparatus of organism and heavy metal ion, adopts the led light source array format.The radiation of light source wavelength is the visible continuously wave band of 400-700 nm, and colour temperature is 5000 K.The outer cover of lamp adopts polymethylmethacrylate, surface-coated Bi
2WO
6Photocatalyst adopt array format, but all weather operations can be used for large-scale water treatment or air purification field.Day illumination or light scattering are arranged daytime, can work; Adopt simultaneously solar cell that portion of energy is converted into electric energy and stores (such as lithium ion battery), power evening to led light source and shine array and work.
Its preparation may further comprise the steps:
1) preparation of photocatalyst
The bismuth nitrate solution of 10 ml, 0.05 mol/l is dripped in 10 ml, 0.025 mol/l sodium tungstate solution, put in the microwave tube of 35 ml, at room temperature stirred 1 hour, then put in the microwave reaction synthesizer, under 150 ° of C of temperature and power 100 W conditions, react and obtain Bi after 10 minutes
2WO
6Photocatalyst.
2) application of led light source outer cover
Above-mentioned photocatalyst is dispersed in the ethanolic soln, is made into the solution that concentration is 5 mg/ml.Then form one deck photocatalyst film with crystal pulling method at the polymethylmethacrylate outer cover, its pull rate is 30 mm/s.Last under the vacuum condition of pressure less than 100 Pa, temperature is 125
oDrying is 1 hour during C.
3) photochemical catalysis experiment
The led light source for preparing is put into the acetaldehyde container that concentration is 10 ppm, and under the condition that fan rotates, dark reaction was opened led light source after 30 minutes, carried out light-catalyzed reaction.Get at set intervals a certain amount of acetaldehyde, test with gas chromatograph.
Such as Fig. 7, (X-coordinate represents irradiation time among the figure, and ordinate zou represents the normalized concentration of aldehydes gas) is that the efficient of photocatalytic degradation acetaldehyde reaches 93% under the white LED light source irradiation of 5000 K in colour temperature.
In above-described embodiment, wavelength all can use at the visible light of 400-700nm, such as led light source or its several mixed color LED light sources such as yellow, blueness, redness, green, pink colours, but does not all have the effective of White LED light source.
Led light source of the present invention has higher organism and removal of heavy metal ions rate, both can be used for the processing of water pollutant, also can be used for the degraded of pollutants in air, also can be used for simultaneously general illumination.Compared with prior art, have the photocatalytic activity height, pollution-free, life-span is long, the preparation method is simple, low cost and other advantages, is conducive to light-catalysed mass-producing application and universalness.
More than be the description to the embodiment of the invention, by the above-mentioned explanation to the disclosed embodiments, make this area professional and technical personnel can realize or use the present invention.Multiple modification to these embodiment will be apparent concerning those skilled in the art, and General Principle as defined herein can in the situation that does not break away from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (12)
1. a visible light is removed the light supply apparatus of organism and heavy metal ion, it is characterized in that the light source of described light supply apparatus is the visible LED light source.
2. visible light as claimed in claim 1 is removed the light supply apparatus of organism and heavy metal ion, it is characterized in that described visible LED is that colour temperature is that high color temperature visible LED, the colour temperature of 7000-10000K is that colour temperature visible LED among the 5000-7000K, colour temperature are one or several in the low colour temperature visible LED light source of 3000-5000K.
3. visible light as claimed in claim 1 is removed the light supply apparatus of organism and heavy metal ion, it is characterized in that, described radiation of light source wavelength is the visible continuously wave band of 400-700 nm.
4. visible light as claimed in claim 1 is removed the light supply apparatus of organism and heavy metal ion, it is characterized in that, described led light source adopts single, many pointolites or planar light source to form.
5. remove the light supply apparatus of organism and heavy metal ion such as the arbitrary described visible light of claim 1 to 4, it is characterized in that described visible LED light source is white LED light source.
6. remove the light supply apparatus of organism and heavy metal ion such as the arbitrary described visible light of claim 1 to 4, it is characterized in that when described led light source was not established outer cover, its led chip was provided with one deck catalyzer rete; When described led light source was provided with outer cover, the outer cover of its led light source was provided with one deck catalyzer rete.
7. visible light as claimed in claim 6 is removed the light supply apparatus of organism and heavy metal ion, it is characterized in that the material of described catalyzer rete is CdS, CdSe, TiO
2-CdS, TiO
2-CdSe, ZnO-CdS, ZnO-CdSe, N-TiO
2, Bi
2O
3, BiOI, BiVO
4, BiWO
4, Bi
2MoO
6, InVO
4, InNbO
4, Ag
3PO
4, AgCl, AgBr, AgI, MoO
3, MoS
2, WO
3, Cu
2O, In
2O
3In one or more combination.
8. visible light as claimed in claim 7 is removed the light supply apparatus of organism and heavy metal ion, it is characterized in that described photocatalyst thicknesses of layers is 0.1 ~ 20 mm.
9. a visible light is removed the preparation method of the light supply apparatus of organism and heavy metal ion, it is characterized in that described preparation method may further comprise the steps:
The first step adopts microwave reaction synthesis method, water-bath chemical reaction method, spray pyrolysis, method of electrostatic spinning, ultrasonic reaction synthesis method or sol-gel method to prepare the photocatalyst of described light supply apparatus;
Second step is coated in above-mentioned photocatalyst equably on the led light source outer cover with silk screen printing, spin coating, spraying, chemical bath deposition or crystal pulling method and forms film, carries out heat treated under certain condition again, forms certain thickness rete at the led light source outer cover.
10. visible light as claimed in claim 9 is removed the preparation method of the light supply apparatus of organism and heavy metal ion; it is characterized in that, described be coated on the led light source outer cover photocatalyst pressure less than the vacuum condition of 100Pa under or heat-treat under the protection at rare gas element.
11. visible light as claimed in claim 9 is removed the preparation method of the light supply apparatus of organism and heavy metal ion, it is characterized in that the described thermal treatment temp of the photocatalyst on the led light source outer cover that is coated in is 120
oC ~ 500
oBetween the C.
12. visible light as claimed in claim 9 is removed the preparation method of the light supply apparatus of organism and heavy metal ion, it is characterized in that the thicknesses of layers that described photocatalyst forms at the led light source outer cover is 0.1 ~ 20 μ m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101176153A CN103373750A (en) | 2012-04-20 | 2012-04-20 | Light source device for removing organic matters and heavy metal ions by visible light and preparation method thereof |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103818986A (en) * | 2014-02-14 | 2014-05-28 | 浙江工商大学 | Photocatalytic electrode responding to visible lights and application thereof on chromium-containing wastewater treatment |
| CN105664982A (en) * | 2016-03-04 | 2016-06-15 | 河北工程大学 | Novel magneto-optical dual-functional catalyst with Fe3O4/BiOI core/shell structure |
| CN107570005A (en) * | 2016-07-04 | 2018-01-12 | 夏普株式会社 | Light catalyst filter and its layered product, exhaust unit and image processing system |
| TWI618550B (en) * | 2016-10-14 | 2018-03-21 | 睿澤企業股份有限公司 | Photocatalyst air purifier and method for purifying air using the same |
| CN108465475A (en) * | 2018-04-04 | 2018-08-31 | 东莞市石鼓污水处理有限公司 | A kind of preparation method of WO3-ZrO2 photocatalysis sewages processing composite membrane |
| CN109569581A (en) * | 2018-12-03 | 2019-04-05 | 苏州大学 | A kind of visible light-responded three-dimensional composite material Bi2MoO6/ ZnO and the preparation method and application thereof |
| CN110280278A (en) * | 2019-06-05 | 2019-09-27 | 常州大学 | A kind of iodine vacancy BiO1.2I0.6/Bi2O3Optic catalytic composite material and preparation method thereof |
| CN110302812A (en) * | 2019-06-05 | 2019-10-08 | 常州大学 | A kind of iodine vacancy BiO1.2I0.6/WO3Composite material and preparation method and application |
| CN110975858A (en) * | 2019-12-20 | 2020-04-10 | 青海师范大学 | Bismuth trioxide semiconductor photocatalyst introducing surface defects and modification method and application thereof |
| CN111250142A (en) * | 2020-03-31 | 2020-06-09 | 上海电力大学 | Preparation method, product and application of graphite-phase carbon nitride/high-iodine bismuth oxyiodide heterojunction with up-conversion characteristic |
| CN113145626A (en) * | 2021-03-29 | 2021-07-23 | 河北科技大学 | Method for restoring soil polluted by organic matters |
| CN113198455A (en) * | 2021-05-17 | 2021-08-03 | 南昌航空大学 | Molybdenum trioxide/molybdenum mesh photocatalyst and preparation method and application thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101644403A (en) * | 2009-06-11 | 2010-02-10 | 江苏名家汇电器有限公司 | Method for improving transparency of LED lamp |
| WO2011159318A1 (en) * | 2010-06-18 | 2011-12-22 | Empire Technology Development Llc | Sensor including a photocatalyst |
| CN202558672U (en) * | 2012-04-20 | 2012-11-28 | 苏州晶能科技有限公司 | Light source device using visible light to remove organics and heavy metal ions |
-
2012
- 2012-04-20 CN CN2012101176153A patent/CN103373750A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101644403A (en) * | 2009-06-11 | 2010-02-10 | 江苏名家汇电器有限公司 | Method for improving transparency of LED lamp |
| WO2011159318A1 (en) * | 2010-06-18 | 2011-12-22 | Empire Technology Development Llc | Sensor including a photocatalyst |
| CN202558672U (en) * | 2012-04-20 | 2012-11-28 | 苏州晶能科技有限公司 | Light source device using visible light to remove organics and heavy metal ions |
Non-Patent Citations (3)
| Title |
|---|
| 刘熙娟: "光触媒节能灯具的研究", 《万方学位论文电子数据库》, 14 July 2005 (2005-07-14) * |
| 张鹏: "玻璃弹簧负载TiO2膜型光催化剂的制备及双光源光催化降解模拟印染废水的研究", 《中国优秀硕士学位论文全文数据库 工程科技Ⅰ辑》, no. 3, 15 March 2008 (2008-03-15), pages 016 - 148 * |
| 蒋海燕等: "单斜BiVO4可见光催化降解甲基橙的形貌效应", 《催化学报》, vol. 32, no. 6, 30 June 2011 (2011-06-30), pages 939 - 949 * |
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| CN103818986A (en) * | 2014-02-14 | 2014-05-28 | 浙江工商大学 | Photocatalytic electrode responding to visible lights and application thereof on chromium-containing wastewater treatment |
| CN103818986B (en) * | 2014-02-14 | 2015-03-04 | 浙江工商大学 | Photocatalytic electrode responding to visible lights and application thereof on chromium-containing wastewater treatment |
| CN105664982A (en) * | 2016-03-04 | 2016-06-15 | 河北工程大学 | Novel magneto-optical dual-functional catalyst with Fe3O4/BiOI core/shell structure |
| CN107570005A (en) * | 2016-07-04 | 2018-01-12 | 夏普株式会社 | Light catalyst filter and its layered product, exhaust unit and image processing system |
| TWI618550B (en) * | 2016-10-14 | 2018-03-21 | 睿澤企業股份有限公司 | Photocatalyst air purifier and method for purifying air using the same |
| CN108465475A (en) * | 2018-04-04 | 2018-08-31 | 东莞市石鼓污水处理有限公司 | A kind of preparation method of WO3-ZrO2 photocatalysis sewages processing composite membrane |
| CN109569581A (en) * | 2018-12-03 | 2019-04-05 | 苏州大学 | A kind of visible light-responded three-dimensional composite material Bi2MoO6/ ZnO and the preparation method and application thereof |
| CN110302812A (en) * | 2019-06-05 | 2019-10-08 | 常州大学 | A kind of iodine vacancy BiO1.2I0.6/WO3Composite material and preparation method and application |
| CN110280278A (en) * | 2019-06-05 | 2019-09-27 | 常州大学 | A kind of iodine vacancy BiO1.2I0.6/Bi2O3Optic catalytic composite material and preparation method thereof |
| CN110302812B (en) * | 2019-06-05 | 2022-04-26 | 常州大学 | Iodine vacancy BiO1.2I0.6/WO3Composite material and preparation method and application thereof |
| CN110280278B (en) * | 2019-06-05 | 2022-07-26 | 常州大学 | Iodine vacancy BiO 1.2 I 0.6 /Bi 2 O 3 Photocatalytic composite material and preparation method thereof |
| CN110975858A (en) * | 2019-12-20 | 2020-04-10 | 青海师范大学 | Bismuth trioxide semiconductor photocatalyst introducing surface defects and modification method and application thereof |
| CN111250142A (en) * | 2020-03-31 | 2020-06-09 | 上海电力大学 | Preparation method, product and application of graphite-phase carbon nitride/high-iodine bismuth oxyiodide heterojunction with up-conversion characteristic |
| CN113145626A (en) * | 2021-03-29 | 2021-07-23 | 河北科技大学 | Method for restoring soil polluted by organic matters |
| CN113145626B (en) * | 2021-03-29 | 2022-07-19 | 河北科技大学 | Method for restoring soil polluted by organic matters |
| CN113198455A (en) * | 2021-05-17 | 2021-08-03 | 南昌航空大学 | Molybdenum trioxide/molybdenum mesh photocatalyst and preparation method and application thereof |
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