CN104147924A - Novel photo-catalyst air purifying agent and preparation method - Google Patents
Novel photo-catalyst air purifying agent and preparation method Download PDFInfo
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- CN104147924A CN104147924A CN201410401174.9A CN201410401174A CN104147924A CN 104147924 A CN104147924 A CN 104147924A CN 201410401174 A CN201410401174 A CN 201410401174A CN 104147924 A CN104147924 A CN 104147924A
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Abstract
The invention relates to a novel photo-catalyst air purifying agent. The novel photo-catalyst air purifying agent comprises the following components in parts by weight: nano-titanium dioxide, granular active carbon and a dispersing agent. A preparation method of the novel photo-catalyst air purifying agent comprises the following steps: 1, preparing a dispersion solution from the nano-titanium dioxide, the dispersing agent and water in a mass ratio of 1:(0.05-0.1):(10-15), and adjusting the PH value to 7-8 by using 10 percent sodium hydroxide; 2, adding the active carbon into the dispersion solution prepared in the step 1, soaking the dispersion solution into a water bath of 80-85 DEG C for 24-30 hours, and filtering the soaked solution to obtain an insoluble substance; and 3, drying the insoluble substance prepared in the step 2, and introducing nitrogen gas at the temperature of 280-310 DEG C for 2-3 hours to obtain the granular air purifying agent. The air purifying agent prepared by using the method has the advantages of adoption of readily-available raw materials, simple method, and suitability for large-scale production. Moreover, the titanium dioxide loading capacity of the air purifying agent is high, has a superior effect of removing harmful gases such as formaldehyde and TVOCs (Total Volatile Organic Compounds), is convenient to use, and can be used for purifying air in rooms or vehicles.
Description
Technical field
The present invention relates to air purification field, is a kind of air cleaning series products being applied in indoor or car.
Background technology
In indoor and car, it is the place that people's residence time is maximum.But finishing material and ornament materials in indoor, car contain the harmful compositions such as formaldehyde, benzene homologues mostly, severe contamination air, harm people's physical and mental health.Therefore, how effectively to eliminate air pollutants, the air quality that improves living environment causes extensive concern.
At present, the method for utilizing nano-titania photocatalyst catalytic degradation formaldehyde and TVOC to purify air is widely used.The method is under the irradiation of light, and the toxic pollutant generation chemical reactions such as nano-titania photocatalyst catalysis formaldehyde, benzene homologues, be finally degraded to carbon dioxide and water, but titanium dioxide itself do not change.The air clearing product that utilizes at present nano-titania photocatalyst to make mainly contains TiO 2 sol, photocatalyst purifier, solid shape support type photocatalyst cleanser etc.
TiO 2 sol is generally prepared by chemical reaction by titanium dioxide precursor, or take nano titanium oxide and by dispersant, disperse to prepare as raw material.Remained shock armies etc. (Chinese patent CN152662A) disclose a kind of titanium dioxide bactericide and preparation method thereof, and the TiO 2 sol of making are sprayed to the article surfaces such as indoor furniture, curtain and purify air.But the content of nano titanium oxide is limited in colloidal sol, photocatalysis performance a little less than.While using in addition, need to spray film forming at article surface, affect the organoleptic attribute of article.
Photocatalyst purifier is inner at clarifier as uses the new material of coating of titanium dioxide or carried titanium dioxide on filter screen, purification core body or inwall, thereby possesses the effect of photocatalytic degradation toxic and harmful.As Gai Li, Gong Qiyun (Chinese patent CN102363097A) are provided with photocatalyst coating on screen pack, make the air purifier with photocatalysis effect.Lin Pinghua, Guo superfine (Chinese patent CN1803258A) have become photo-catalytic air cleaner by the porous ceramic film material of carried titanium dioxide for Purified core system.This series products clean-up effect is relatively good, be generally used for relatively large air cleaning place, but cost is relatively high, and is subject to the restriction of power taking condition, is difficult to be applied to car inner air-cleaning.
Solid shape support type photocatalyst cleanser is that nano titanium oxide is loaded on specific material, forms the solid particle with photocatalysis performance, and the preparation method of this type of cleanser mainly contains powder sintering method, sol-gel process, ion-exchange etc.As (Chinese patent CN102500322A) such as Li Jian, Ma Dongzhu joins TiCl by pretreated active carbon
3hydrochloric acid solution in, by hydrothermal treatment consists, obtain the acticarbon of carried titanium dioxide.The preparation method that Chen Hangfei (Chinese patent CN101670282A) discloses a kind of load type titania is by the active carbon aqueous dispersion after processing, add again after the repeated multiple times immersion of nano titanium oxide, activated carbon filtration, oven dry, roasting are made to the activated carbon of carried titanium dioxide.But these methods or nano titanium oxide load factor is conventionally lower, photocatalysis performance a little less than; Complex process (needing repeated multiple times immersion as Chen Hang flies disclosed method), is difficult to suitability for industrialized production; Sintering temperature is higher, and energy consumption is larger, has some limitations.
The invention provides a kind of Novel photocatalyst air purifying preparation and preparation method thereof, be intended to overcome like product and preparation method's shortcoming, its raw material is easy to get, working condition easily reaches, production cost is lower, is applicable to large-scale production.And titanium dichloride load amount is higher, and clean-up effect is remarkable, be applicable to indoor or car inner air-cleaning.
Summary of the invention
The object of the present invention is to provide that a kind of raw material is easy to get, technique is simple, the Novel photocatalyst air purifying preparation of good purification and preparation method thereof, is applicable to degradation of formaldehyde, TVOC etc. in indoor or car, reaches desirable air purification effect.
A preparation method for Novel photocatalyst air purifying preparation, comprises the steps:
1, press the dispersion soln of mass ratio 1: 0.05～0.1: 10～15 preparation of nano titanium dioxide in water of nano titanium oxide, dispersant and water, with the sodium hydrate aqueous solution of mass fraction 10%, regulate pH value to 7～8 of dispersion soln.
2,20～30 object granular activated carbons are joined in the dispersion liquid of step 1 gained, in 80～85 ℃ of water-baths, soak 24～30 hours, filter to obtain insoluble matter.
3, the insoluble matter of step 2 gained is led to nitrogen 2～3 hours after drying at 280～310 ℃, obtain granular Novel photocatalyst air purifying preparation.
The specific embodiment:
In order to make object of the present invention, technical scheme etc. clearer, in conjunction with following instance, the present invention is described in detail.
Embodiment 1: Novel photocatalyst air purifying preparation prepare example
1, the dispersion soln of preparation of nano titanium dioxide in water.Take 12 grams of 200 grams of nano titanium oxides (5～10 nanometer), dispersant and join in 2400 grams of water, with the sodium hydrate aqueous solution of mass fraction 10%, regulate the pH value to 7 of dispersion soln.The mass ratio of nano titanium oxide, dispersant, water is 1: 0.06: 12.
2,400 grams of 20～30 object granular activated carbons are joined in the dispersion liquid of step 1 gained, in 85 ℃ of water-baths, soak 30 hours, filter to obtain insoluble matter.
3, the insoluble matter of step 2 gained is dried to 2 hours at 85 ℃, then at 300 ℃, leads to nitrogen 3 hours, obtain 482 grams of granular Novel photocatalyst air purifying preparations.
Embodiment 2: Novel photocatalyst air purifying preparation titanium dichloride load rate, photocatalytic activity and stability test
1,1 gram of the air purifying preparation that takes embodiment 1 preparation joins in 2 grams of ammonium persulfates and 100 milliliters of sulfuric acid mixture liquids, heats micro-boiling to the titanium dioxide dissolving wherein, filters and collects filtrate, after cooling by 1 liter of volumetric flask distilled water constant volume of filtrate immigration.Get 2 milliliters of constant volume liquid and be added in 25 milliliters of volumetric flasks, then add successively 1 milliliter of sulfuric acid, 1 milliliter of phosphoric acid, 1 milliliter of 3% hydrogen peroxide, be diluted with water to scale, shake up.After 15 minutes, at spectrophotometric determination solution light absorption value for wavelength 410 nanometers, calculate the content of titanium dioxide.The titanium dichloride load rate that records Novel photocatalyst air purifying preparation is 18.6%.
2, under the effect of sunshine, with the photocatalytic activity of the percent of decolourization evaluate catalysts of methyl orange solution.Experimental technique is: it is in the methyl orange solution of 10 mg/litre that 50 grams of Novel photocatalyst air purifying preparations that take in embodiment 1 preparation join 500 milliliters of initial concentrations, then be positioned over (the average intensity of illumination of sunshine is 15.96 watts/square metre) constantly stirring under sunshine, record methyl orange solution colourity after 5 hours and can remove 93%.
3,100 grams of air purifying preparations that take embodiment 1 preparation, rinse 8～10 times with the sulfuric acid of mass fraction 30% and the sodium hydrate aqueous solution of mass fraction 10% respectively.Then according to the method for embodiment 2 steps 1, measure the content of nano titanium oxide in the air purifying preparation rinsing, after soda acid rinses, the titanium dichloride load rate of air purifying preparation is 17.4%, according to the method for step 2 in embodiment 2, measure and rinse the photocatalysis performance of air purifying preparation later, record methyl orange solution colourity after 5 hours and can remove 92%.
By above experimental result, illustrated, not only stability is high for Novel photocatalyst air purifying preparation prepared by this method, and has very strong photocatalysis performance.
Embodiment 3: Novel photocatalyst air purifying preparation degradation of formaldehyde, TVOC test
Method according to < < indoor air purification product clean-up effect assay method > > QBT2761-2006 is measured the effect that embodiment 1 prepares gained air purifying preparation degradation of formaldehyde and TVOC.(1) first according to QBT2761-2006, require preparation formaldehyde, TVOC pollutant.(2) undressed base paper is placed in to blank test cabin A, then takes on the base paper that 100 grams of air purifying preparations that embodiment 1 prepares gained are laid in 1 square metre, be placed in the B of sampling test cabin.(3) by the container for preparing pollutant is housed, be placed on respectively in blank test cabin A, sampling test cabin B, close immediately hatch door, then open the electric fan of two experimental cabins, stir 1 minute, make in cabin after air mixes with pollutant, to close fan simultaneously.Air in blank cabin is sampled, and in the blank test cabin A recording, air pollutant concentration value is initial concentration.After (4) 24 hours, respectively air in two cabins is sampled, air pollutant concentration in analytical test two cabins.(5) detection method of Pollutant Formaldehyde is by < < residential area Formaldehyde in Atmosphere health test method---and the method for stipulating in AAS > > GBT16129-1995 detects, and pollutant TVOC detects according to the method in < < IAQ > > GB/T1883-2002.Result shows this Novel photocatalyst air purifying preparation degradation of formaldehyde 99.1% in 24 hours, degraded TVOC96.4%, and the effect purifying air is very obvious.
Claims (6)
1. Novel photocatalyst air purifying preparation is characterised in that an its preparation method, comprises the steps:
(1) press the dispersion soln of mass ratio 1: 0.05～0.1: 10～15 preparation of nano titanium dioxide in water of nano titanium oxide, dispersant and water, with the sodium hydrate aqueous solution of mass fraction 10%, regulate pH value to 7～8 of dispersion soln.
(2) 20～30 object granular activated carbons are joined in the dispersion liquid of step (1) gained, in 80～85 ℃ of water-baths, soak 24～30 hours, filter to obtain insoluble matter.
(3) insoluble matter of step (2) gained is led to nitrogen 2～3 hours after drying at 280～310 ℃, obtain granular air purifying preparation.
2. novel light touches air purifying preparation as described in claim 1, it is characterized in that the titanium oxide dispersion in step (1), and wherein titanium dioxide, dispersant with water quality ratio are: 1: 0.05～0.1: 10～15, and pH value is 7～8.
3. Novel photocatalyst air purifying preparation as claimed in claim 1, is characterized in that, described in step (2), soaking temperature is 80～85 ℃, soak time 24～30 hours.
4. Novel photocatalyst air purifying preparation as described in claim 1, is characterized in that, after drying, at 280～310 ℃, logical nitrogen is 2～3 hours for insoluble matter described in step (3).
5. Novel photocatalyst air purifying preparation as claimed in claim 1, it is characterized in that the dispersant in step (1) is one or more in polyacrylic, polycarboxylic acid, calgon, and be not limited to above-mentioned several classes of enumerating, all dispersants that plays dispersed titanium dioxide effect, all within claim.
6. Novel photocatalyst air purifying preparation as claimed in claim 1, is characterized in that purposes is indoor or car inner air-cleaning.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106178944A (en) * | 2016-09-20 | 2016-12-07 | 东莞市爱乐居环保科技有限公司 | A kind of efficient formaldehyde cleanser and preparation method thereof |
| CN106179508A (en) * | 2016-07-05 | 2016-12-07 | 潘江生 | A kind of unglazed according to quick potent decomposing formaldehyde catalysis material and preparation method thereof |
| CN107175074A (en) * | 2017-07-12 | 2017-09-19 | 河南西超实业有限公司 | One kind is except modified formaldehyde activated carbon and preparation method thereof |
| CN107321308A (en) * | 2017-07-19 | 2017-11-07 | 张翔 | It is a kind of for material of indoor air purification and preparation method thereof |
| CN113083171A (en) * | 2021-03-10 | 2021-07-09 | 叁素(浙江)新材料科技有限责任公司 | ClO of composite photocatalyst2Method for preparing sustained-release gel |
| CN116712857A (en) * | 2023-06-19 | 2023-09-08 | 浙江省农业科学院 | Air purifying agent and preparation method thereof |
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| CN101670282A (en) * | 2009-10-19 | 2010-03-17 | 浙江博华环境技术工程有限公司 | Preparation method of load type nano titanium dioxide catalyst |
| CN103223334A (en) * | 2013-04-19 | 2013-07-31 | 遵义医学院 | TiO2/AC photocatalyst with acetonitrile as dispersion medium of nano-TiO2, and preparation method thereof |
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2014
- 2014-08-15 CN CN201410401174.9A patent/CN104147924A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101670282A (en) * | 2009-10-19 | 2010-03-17 | 浙江博华环境技术工程有限公司 | Preparation method of load type nano titanium dioxide catalyst |
| CN103223334A (en) * | 2013-04-19 | 2013-07-31 | 遵义医学院 | TiO2/AC photocatalyst with acetonitrile as dispersion medium of nano-TiO2, and preparation method thereof |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106179508A (en) * | 2016-07-05 | 2016-12-07 | 潘江生 | A kind of unglazed according to quick potent decomposing formaldehyde catalysis material and preparation method thereof |
| CN106179508B (en) * | 2016-07-05 | 2018-09-07 | 甘肃润康药业有限公司 | A kind of quick potent decomposing formaldehyde catalysis material and preparation method thereof of no light |
| CN106178944A (en) * | 2016-09-20 | 2016-12-07 | 东莞市爱乐居环保科技有限公司 | A kind of efficient formaldehyde cleanser and preparation method thereof |
| CN107175074A (en) * | 2017-07-12 | 2017-09-19 | 河南西超实业有限公司 | One kind is except modified formaldehyde activated carbon and preparation method thereof |
| CN107321308A (en) * | 2017-07-19 | 2017-11-07 | 张翔 | It is a kind of for material of indoor air purification and preparation method thereof |
| CN113083171A (en) * | 2021-03-10 | 2021-07-09 | 叁素(浙江)新材料科技有限责任公司 | ClO of composite photocatalyst2Method for preparing sustained-release gel |
| CN116712857A (en) * | 2023-06-19 | 2023-09-08 | 浙江省农业科学院 | Air purifying agent and preparation method thereof |
| CN116712857B (en) * | 2023-06-19 | 2023-11-07 | 浙江省农业科学院 | Air purifying agent and preparation method thereof |
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Inventor after: Li Junqing Inventor after: Zhao Yanbin Inventor before: Li Junqing Inventor before: Zhao Yanbin Inventor before: Zhang Yun |
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Effective date of registration: 20151105 Address after: 100000, C808, Wantong center, 6 Chaoyang Street, Beijing, Chaoyang District Applicant after: Amuda Technology (Beijing) Co., Ltd.. Address before: 450001, National University Science Park, 11, Gao Cheng Road, Zhengzhou, Henan Province, building 5, building 13, block B, 9 stories Applicant before: Zhengzhou Lvyetang Herbal Technology Co., Ltd. |
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