CN106139896A - A kind of superstructure light mineralising Techniques for Indoor Air Purification - Google Patents
A kind of superstructure light mineralising Techniques for Indoor Air Purification Download PDFInfo
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- CN106139896A CN106139896A CN201510122774.6A CN201510122774A CN106139896A CN 106139896 A CN106139896 A CN 106139896A CN 201510122774 A CN201510122774 A CN 201510122774A CN 106139896 A CN106139896 A CN 106139896A
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- zinc nitrate
- nitrate solution
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Abstract
The present invention is a kind of superstructure light mineralising air purifying process removing formaldehyde in air, relates to the fields such as air cleaning, superstructure, light mineralising and environmental catalysis.It is characterized in that being carried on by the zinc oxide with photocatalysis performance on Bi system complex oxide carrier, it is prepared as the photocatalyst granular of certain size, photocatalyst granular is contained in porous filter screen, it is loaded in air purifier as photocatalysis assembly, it is achieved that under normal wet normal temperature condition, remove the purpose of formaldehyde in indoor air.Use equi-volume impregnating that a certain amount of zinc oxide is carried on Bi2WO6Or BiFeO3, improve visible light photocatalysis efficiency, save the energy, formaldehyde clearance significantly improves, and this technology is applicable to indoor and car inner air-cleaning.
Description
Technical field
The present invention is a kind of superstructure light mineralising air purifying process removing formaldehyde in air, relate to air cleaning, superstructure,
The fields such as light mineralising and environmental catalysis.It is characterized in that in air that the volatile organic matter with formaldehyde as representative is by load superstructure light
During mineralizer photocatalysis net, under illumination condition, oxidation Decomposition is water and carbon dioxide, does not produce secondary pollution.
Background technology
Along with rapid development of economy and the raising day by day of living standard, constructional ornamental material the air pollution problems inherent caused is very
Seriously；And automobile uses in a large number, the ornament materials such as the leather seat, instrument desk that use in car, the binding agent of glue etc. use,
Car body sprays paint etc. and all can produce many harmful gas materials, causes the indoor and pollution of environment inside car.Wherein, formaldehyde is China room
One of interior air major pollutants, have the features such as pollution typical contamination time length, and health can be worked the mischief by Long Term Contact.
In addition to controlling the generation of pollutant on source, air cleaning facility is utilized can effectively to solve problem above.In the market
Air cleaning facility mainly includes adsorption filtration assembly and photochemical catalytic oxidation assembly, adsorption filtration layer mainly utilize HEPA net and
Particulate matter in air is adsorbed by active carbon nets etc., and photocatalysis assembly mainly utilizes TiO2Based photocatalyst, at ultraviolet light
Under irradiation, the volatile organic matter (VOCs) with formaldehyde as representative is oxidized to water and carbon dioxide.But, due to TiO2's
Band gap is 3.2eV, is only capable of being excited by ultraviolet light (only accounting for the 3.8% of solar energy), it is seen that light photocatalysis efficiency is too low.
In recent years, scientists finds that Bi system complex oxide has the visible ray driving photocatalysis performance of potential excellence, thus right
The research of Bi system complex oxide causes increasing concern.With Bi2WO6As a example by, its valence band is miscellaneous by W6s and O2p track
Change forms, and has higher oxidation activity and charge mobility, and because it has the layer structure of uniqueness so that catalytic degradation is anti-
Mainly should carry out at interlayer, be equivalent to carry out the photocatalysis of " two-dimentional ".Therefore, suitable energy gap and intrinsic structure
Bi system complex oxide is made to show outstanding photocatalytic activity under visible light illumination.
Summary of the invention
In order to improve photocatalysis efficiency further, the present invention is that the zinc oxide with photocatalysis performance is carried on Bi system combined oxidation
On thing carrier, it is prepared as the photocatalyst granular of certain size, photocatalyst granular is contained in porous filter screen, as photocatalysis
Assembly is loaded in air purifier, it is achieved that remove the purpose of formaldehyde in indoor air under normal wet normal temperature condition.
The present invention uses equi-volume impregnating to prepare zinc oxide (ZnO)/Bi Containing Oxide Catalyst, and load capacity is 1.0-5.0%
The weight/mass percentage composition of catalyst (zinc oxide account for), Bi system complex oxide is Bi2WO6Or BiFeO3.First weigh a certain amount of
Zinc nitrate be made into aqueous solution, will be equipped with the glass beaker of zinc nitrate solution, to put into ultrasonic washing instrument ultrasonic, it is ensured that dissolves and fills
Point, solution is uniform, then is joined evenly in zinc nitrate solution by a certain amount of Bi system complex oxide carrier, then stands
5-12h, is dried 10-12h, Muffle furnace roasting 3-5h under the conditions of 500-650 DEG C under 100-120 DEG C of temperature conditions, grinds,
Tabletting, then grind sieve, obtain 5-6 mesh granule stand-by.
Detailed description of the invention
Embodiment 1:
Weighing 1.3g zinc nitrate to be dissolved in 50mL deionized water and be made into aqueous solution, the glass beaker that will be equipped with zinc nitrate solution is put
In entering ultrasonic washing unit ultrasonic, it is ensured that dissolving fully, solution is uniform, simultaneously again by the Bi of 35.0g2WO6Carrier adds evenly
Enter in zinc nitrate solution, then stand 5h, under 110 DEG C of temperature conditionss, be dried 12h, Muffle furnace roasting under the conditions of 500 DEG C
Burn 3h, grind, tabletting, then grinding is sieved, and obtains 5-6 mesh granule, is contained in porous filter screen by photocatalyst granular, as light
Catalytic module is loaded in air purifier, and recording purifying formaldehyde efficiency is 85.8%.
Embodiment 2:
Weighing 3.5g zinc nitrate to be dissolved in 50mL deionized water and be made into aqueous solution, the glass beaker that will be equipped with zinc nitrate solution is put
In entering ultrasonic washing unit ultrasonic, it is ensured that dissolving fully, solution is uniform, simultaneously again by the Bi of 35.0g2WO6Carrier adds evenly
Enter in zinc nitrate solution, then stand 8h, under 120 DEG C of temperature conditionss, be dried 10h, Muffle furnace roasting under the conditions of 550 DEG C
Burn 4h, grind, tabletting, then grinding is sieved, and obtains 5-6 mesh granule, is contained in porous filter screen by photocatalyst granular, as light
Catalytic module is loaded in air purifier, and recording purifying formaldehyde efficiency is 93.8%.
Embodiment 3:
Weighing 5.8g zinc nitrate to be dissolved in 50mL deionized water and be made into aqueous solution, the glass beaker that will be equipped with zinc nitrate solution is put
In entering ultrasonic washing unit ultrasonic, it is ensured that dissolving fully, solution is uniform, simultaneously again by the Bi of 35.0g2WO6Carrier adds evenly
Enter in zinc nitrate solution, then stand 12h, under 110 DEG C of temperature conditionss, be dried 12h, Muffle furnace roasting under the conditions of 600 DEG C
Burn 4h, grind, tabletting, then grinding is sieved, and obtains 5-6 mesh granule, is contained in porous filter screen by photocatalyst granular, as light
Catalytic module is loaded in air purifier, and recording purifying formaldehyde efficiency is 95.2%.
Embodiment 4:
Weighing 6.8g zinc nitrate to be dissolved in 50mL deionized water and be made into aqueous solution, the glass beaker that will be equipped with zinc nitrate solution is put
In entering ultrasonic washing unit ultrasonic, it is ensured that dissolving fully, solution is uniform, simultaneously again by the Bi of 35.0g2WO6Carrier adds evenly
Enter in zinc nitrate solution, then stand 6h, under 110 DEG C of temperature conditionss, be dried 12h, Muffle furnace roasting under the conditions of 650 DEG C
Burn 5h, grind, tabletting, then grinding is sieved, and obtains 5-6 mesh granule, is contained in porous filter screen by photocatalyst granular, as light
Catalytic module is loaded in air purifier, and recording purifying formaldehyde efficiency is 94.5%.
Embodiment 5:
Weighing 1.2g zinc nitrate to be dissolved in 50mL deionized water and be made into aqueous solution, the glass beaker that will be equipped with zinc nitrate solution is put
In entering ultrasonic washing unit ultrasonic, it is ensured that dissolving fully, solution is uniform, simultaneously again by the BiFeO of 32.0g3Carrier adds evenly
Enter in zinc nitrate solution, then stand 5h, under 110 DEG C of temperature conditionss, be dried 12h, Muffle furnace roasting under the conditions of 500 DEG C
Burn 3h, grind, tabletting, then grinding is sieved, and obtains 5-6 mesh granule, is contained in porous filter screen by photocatalyst granular, as light
Catalytic module is loaded in air purifier, and recording purifying formaldehyde efficiency is 90.6%.
Embodiment 6:
Weighing 3.2g zinc nitrate to be dissolved in 50mL deionized water and be made into aqueous solution, the glass beaker that will be equipped with zinc nitrate solution is put
In entering ultrasonic washing unit ultrasonic, it is ensured that dissolving fully, solution is uniform, simultaneously again by the BiFeO of 32.0g3Carrier adds evenly
Enter in zinc nitrate solution, then stand 7h, under 120 DEG C of temperature conditionss, be dried 12h, Muffle furnace roasting under the conditions of 600 DEG C
Burn 3h, grind, tabletting, then grinding is sieved, and obtains 5.6 mesh granules, is contained in porous filter screen by photocatalyst granular, as light
Catalytic module is loaded in air purifier, and recording purifying formaldehyde efficiency is 94.5%.
Embodiment 7:
Weighing 4.9g zinc nitrate to be dissolved in 50mL deionized water and be made into aqueous solution, the glass beaker that will be equipped with zinc nitrate solution is put
In entering ultrasonic washing unit ultrasonic, it is ensured that dissolving fully, solution is uniform, simultaneously again by the BiFeO of 32.0g3Carrier adds evenly
Enter in zinc nitrate solution, then stand 12h, under 110 DEG C of temperature conditionss, be dried 12h, Muffle furnace roasting under the conditions of 550 DEG C
Burn 3h, grind, tabletting, then grinding is sieved, and obtains 5-6 mesh granule, is contained in porous filter screen by photocatalyst granular, as light
Catalytic module is loaded in air purifier, and recording purifying formaldehyde efficiency is 96.4%.
Embodiment 8:
Weighing 6.2g zinc nitrate to be dissolved in 50mL deionized water and be made into aqueous solution, the glass beaker that will be equipped with zinc nitrate solution is put
In entering ultrasonic washing unit ultrasonic, it is ensured that dissolving fully, solution is uniform, simultaneously again by the BiFe O of 32.0g3Carrier adds evenly
Enter in zinc nitrate solution, then stand 6h, under 120 DEG C of temperature conditionss, be dried 10h, Muffle furnace roasting under the conditions of 650 DEG C
Burn 5h, grind, tabletting, then grinding is sieved, and obtains 5-6 mesh granule, is contained in porous filter screen by photocatalyst granular, as light
Catalytic module is loaded in air purifier, and recording purifying formaldehyde efficiency is 95.5%.
Claims (7)
1., for the method removing the superstructure light mineralising air purifying process of formaldehyde in air, it is characterized in that there is following technique stream
Journey: use equi-volume impregnating to prepare zinc oxide (the ZnO)/Bi system compound oxide photocatalyst of certain load capacity.First claim
Take a certain amount of zinc nitrate to be dissolved in the deionized water of certain volume and be made into zinc nitrate solution, will be equipped with the glass of zinc nitrate solution
It is ultrasonic that ultrasonic washing instrument put into by beaker, it is ensured that dissolving fully, solution is uniform, then is carried by a certain amount of Bi system complex oxide
Body joins in zinc nitrate solution evenly, then stands certain time, is dried certain time, one under the conditions of uniform temperature
Muffle furnace roasting certain time under the conditions of fixed temperature, grind, tabletting, then grinding is sieved, and obtains 5-6 mesh granule, by photocatalyst
Granule is contained in porous filter screen, is loaded in air purifier as photocatalysis assembly.
The method of the superstructure light mineralising air purifying process for removing formaldehyde in air the most according to claim 1, its feature
Being, the zinc oxide load capacity weight/mass percentage composition of catalyst (zinc oxide account for) is 1.0～5.0%.
The method of the superstructure light mineralising air purifying process for removing formaldehyde in air the most according to claim 1, its feature
Being, used carrier Bi system complex oxide is Bi2WO6Or BiFeO3。
The method of the superstructure light mineralising air purifying process for removing formaldehyde in air the most according to claim 1, its feature
Being, after carrier incipient impregnation zinc nitrate solution, time of repose is 5～12h.
The method of the superstructure light mineralising air purifying process for removing formaldehyde in air the most according to claim 1, its feature
Being, after carrier incipient impregnation zinc nitrate solution, baking temperature is 100～120 DEG C.
The method of the superstructure light mineralising air purifying process for removing formaldehyde in air the most according to claim 1, its feature
Being, after carrier incipient impregnation zinc nitrate solution, sintering temperature is 500～650 DEG C.
The method of the superstructure light mineralising air purifying process for removing formaldehyde in air the most according to claim 1, its feature
Being, after carrier incipient impregnation zinc nitrate solution, roasting time is 3～5h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510122774.6A CN106139896A (en) | 2015-03-16 | 2015-03-16 | A kind of superstructure light mineralising Techniques for Indoor Air Purification |
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| CN201510122774.6A CN106139896A (en) | 2015-03-16 | 2015-03-16 | A kind of superstructure light mineralising Techniques for Indoor Air Purification |
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| CN106139896A true CN106139896A (en) | 2016-11-23 |
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| CN201510122774.6A Pending CN106139896A (en) | 2015-03-16 | 2015-03-16 | A kind of superstructure light mineralising Techniques for Indoor Air Purification |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108278698A (en) * | 2018-03-16 | 2018-07-13 | 青岛海尔空调器有限总公司 | Double-current method fresh air purification device |
| CN108278697A (en) * | 2018-03-16 | 2018-07-13 | 青岛海尔空调器有限总公司 | Double-current method fresh air purification device |
| CN111530882A (en) * | 2020-03-24 | 2020-08-14 | 董广星 | Rapid kitchen waste treatment system |
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| CN1683074A (en) * | 2005-03-11 | 2005-10-19 | 南京大学 | Process for preparing visible light responding photo catalytic film layer |
| CN1709567A (en) * | 2005-05-19 | 2005-12-21 | 武汉理工大学 | Hydrothermal method for preparing nano crystal Bi2WO6 powder photocatalytic material with visible light activity |
| CN101322944A (en) * | 2008-07-28 | 2008-12-17 | 吉林大学 | Preparation of composite photocatalyst and method thereof with porous minerals |
| JP2012140275A (en) * | 2010-12-28 | 2012-07-26 | Ohara Inc | Glass ceramic and production method therefor |
| CN102744067A (en) * | 2012-06-01 | 2012-10-24 | 中国科学院理化技术研究所 | Hollow magnetic nano composite catalytic material and preparation method thereof |
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2015
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1683074A (en) * | 2005-03-11 | 2005-10-19 | 南京大学 | Process for preparing visible light responding photo catalytic film layer |
| CN1709567A (en) * | 2005-05-19 | 2005-12-21 | 武汉理工大学 | Hydrothermal method for preparing nano crystal Bi2WO6 powder photocatalytic material with visible light activity |
| CN101322944A (en) * | 2008-07-28 | 2008-12-17 | 吉林大学 | Preparation of composite photocatalyst and method thereof with porous minerals |
| JP2012140275A (en) * | 2010-12-28 | 2012-07-26 | Ohara Inc | Glass ceramic and production method therefor |
| CN102744067A (en) * | 2012-06-01 | 2012-10-24 | 中国科学院理化技术研究所 | Hollow magnetic nano composite catalytic material and preparation method thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108278698A (en) * | 2018-03-16 | 2018-07-13 | 青岛海尔空调器有限总公司 | Double-current method fresh air purification device |
| CN108278697A (en) * | 2018-03-16 | 2018-07-13 | 青岛海尔空调器有限总公司 | Double-current method fresh air purification device |
| CN111530882A (en) * | 2020-03-24 | 2020-08-14 | 董广星 | Rapid kitchen waste treatment system |
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Application publication date: 20161123 |