CN105289754A - Alumina-doped air purification material and preparation method thereof - Google Patents
Alumina-doped air purification material and preparation method thereof Download PDFInfo
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- CN105289754A CN105289754A CN201510849251.1A CN201510849251A CN105289754A CN 105289754 A CN105289754 A CN 105289754A CN 201510849251 A CN201510849251 A CN 201510849251A CN 105289754 A CN105289754 A CN 105289754A
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Abstract
The invention belongs to the technical field of functional materials and discloses an alumina-doped air purification material. The air purification material comprises the following ingredients in parts by weight: 50-90 parts of tetrabutyl titanate, 2-10 parts of nano-alumina, 20-40 parts of chitin nano-fibers, 3-10 parts of polyethylene glycol, 200-500 parts of absolute ethyl alcohol and 10-50 parts of water. As alumina is uniformly doped, TiO2 clustering caused by high surface energy with time increase is avoided, and long-time stable photocatalytic activity is maintained; by use of polyethylene glycol, uniform tiny micropores are formed in the compact surface of TiO2, and surface clustering of TiO2 is prevented to some extent; through adsorption of the chitin nano-fibers, the concentration of pollutants on the surface is increased, and a foundation is laid for successful photocatalysis of TiO2.
Description
Technical field
The invention belongs to technical field of function materials, relate to a kind of cleanser, particularly relate to material for air purification of a kind of doped aluminium and preparation method thereof.
Background technology
In recent years, along with the fast development of China's city industrialization, atmosphere pollution is day by day serious, and air quality worsens further, not only jeopardizes the normal life of people, and works the mischief to the physical and mental health of people.The IAQ closely bound up with people also makes people worried, particularly this year is along with the extensive use of architectural decorative and fitting materials, various material discharges a large amount of harmful substance (as: volatile organic contaminant such as formaldehyde, toluene, benzene) severe contaminations indoor air environment, and then to the healthy of the mankind and operating efficiency important.How to remove efficiently as the volatile organic compounds such as formaldehyde, toluene, benzene become researcher pay close attention to focus, utilizing the functional material of some modifications optionally to carry out harmless treatment to volatile organic compound as catalyst or adsorbent becomes the most effective approach.
The minimizing technology of volatile organic compound mainly contains the methods such as active carbon adsorption, the woody plant method of purification, electrostatic precipitation, photocatalysis, and wherein, people are for TiO
2large quantifier elimination has been carried out in photocatalysis, becomes research emphasis and the focus of current photocatalysis field.TiO
2photochemical catalyst, the organic matter that its degradable is a large amount of, as benzene,toluene,xylene, naphthalene, halogenated aryl hydrocarbon, formaldehyde, NO
x, ammonia, hydrogen sulfide, tetrachloro-ethylene, carbon monoxide etc.TiO
2photocatalytic mechanism be when illumination, an electronics (e in its valence band
-) will be excited, when crossing forbidden band and entering conduction band, then in valence band, produce corresponding hole (h
+).And this photohole has very strong oxidability (its standard hydrogen electrode current potential is at 1.0-3.5V), thus at TiO
2define redox system on the surface, this redox system almost can be oxidized all Organic Pollutants, and they are completely oxidized to CO
2and H
2o, and can not secondary pollution be produced.
But TiO
2also there are some shortcomings in photocatalysis, this is because in light catalytic purifying field, usual pollutant levels are lower, and TiO
2itself there is no adsorption capacity, therefore needs extra carrier to be adsorbed onto on the surface by pollutant, thus by TiO
2catalytic decomposition.In addition, due to TiO
2there is high surface energy and be highly susceptible to occurring surface reunion, thus as time goes by, significantly reducing its photocatalytic activity.In order to overcome these defects, people have developed multiple supported titanium
2material for air purification, such as active carbon, silica gel, Woelm Alumina, NACF etc. carry out load.But up to now, for use chitin nano fiber load TiO
2material for air purification, had not yet to see report.Meanwhile, for the supported titanium that exploitation is new
2material for air purification still has eager demand and requirement, is also one of research topic of air purification field.
Summary of the invention
Goal of the invention of the present invention is the technical problem for above-mentioned existence, provides material for air purification of a kind of doped aluminium and preparation method thereof.
In order to reach foregoing invention object, the technical solution used in the present invention is as follows:
A material for air purification for doped aluminium, described material for air purification comprises following component, each component by weight:
Preferably, the particle diameter of described nano aluminium oxide is 20-100nm.
The present invention also provides a kind of preparation method of material for air purification of doped aluminium, said method comprising the steps of:
(1) mixed according to following proportioning by raw material, stir, normal temperature leaves standstill 5-10h, prepares colloidal sol;
(2) add 20-40 part chitin nano fiber in the colloidal sol obtained in step (1), ultrasonic disperse, ageing under room temperature, then at 80-100 DEG C of dry 4-8h, obtain material for air purification material.
Preferably, the digestion time described in step (2) is 24-48h.
In sum, owing to have employed technique scheme, the invention has the beneficial effects as follows:
1. the doping of nano aluminium oxide, by Uniform Doped aluminium oxide, avoids TiO
2prolongation in time and because of high surface energy occur agglomeration, maintain long light stable catalytic activity;
2. by the use of polyethylene glycol, at TiO
2compact surfaces on define uniform tiny micropore, also overcome TiO to a certain extent
2surface reunite;
3. by the absorption of chitin nano fiber, increasing the pollutant levels on its surface, is TiO
2smooth photochemical catalyst provide the basis of carrying out.
By these means and process, final material for air purification is made to have good degradation efficiency and time stability to the organic pollution in air.
Detailed description of the invention
The technological means realized to make the present invention, creation characteristic, reaching object and effect is easy to understand, below in conjunction with embodiment, setting forth the present invention further.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
Embodiment 1
Various raw material is taken according to hereinafter described ratio of quality and the number of copies:
A preparation method for above-mentioned material for air purification, comprises the following steps:
(1) add tetrabutyl titanate, nano aluminium oxide and polyethylene glycol by weight, then add absolute ethyl alcohol and distilled water, stir, be made into homogeneous solution, normal temperature leaves standstill 5h, obtains colloidal sol;
(2) add chitin nano fiber by the colloidal sol obtained in step (1), then ultrasonic disperse, ageing 24 under room temperature, then at 80 DEG C of dry 8h, obtain material for air purification.
Embodiment 2
Various raw material is taken according to hereinafter described ratio of quality and the number of copies:
A preparation method for above-mentioned material for air purification, comprises the following steps:
(1) add tetrabutyl titanate, nano aluminium oxide and polyethylene glycol by weight, then add absolute ethyl alcohol and distilled water, stir, be made into homogeneous solution, normal temperature leaves standstill 10h, obtains colloidal sol;
(2) add chitin nano fiber by the colloidal sol obtained in step (1), then ultrasonic disperse, ageing 48h under room temperature, then at 100 DEG C of dry 4h, obtain material for air purification.
Embodiment 3
Various raw material is taken according to hereinafter described ratio of quality and the number of copies:
A preparation method for above-mentioned material for air purification, comprises the following steps:
(1) add tetrabutyl titanate, nano aluminium oxide and polyethylene glycol by weight, then add absolute ethyl alcohol and distilled water, stir, be made into homogeneous solution, normal temperature leaves standstill 8h, obtains colloidal sol;
(2) add chitin nano fiber by the colloidal sol obtained in step (1), then ultrasonic disperse, ageing 32h under room temperature, then at 90 DEG C of dry 6h, obtain material for air purification.
Embodiment 4
Various raw material is taken according to hereinafter described ratio of quality and the number of copies:
A preparation method for above-mentioned material for air purification, comprises the following steps:
(1) add tetrabutyl titanate, nano aluminium oxide and polyethylene glycol by weight, then add absolute ethyl alcohol and distilled water, stir, be made into homogeneous solution, normal temperature leaves standstill 10h, obtains colloidal sol;
(2) add chitin nano fiber by the colloidal sol obtained in step (1), then ultrasonic disperse, ageing 48h under room temperature, then at 100 DEG C of dry 4h, obtain material for air purification.
Embodiment 5
Various raw material is taken according to hereinafter described ratio of quality and the number of copies:
A preparation method for above-mentioned material for air purification, comprises the following steps:
(1) add tetrabutyl titanate, nano aluminium oxide and polyethylene glycol by weight, then add absolute ethyl alcohol and distilled water, stir, be made into homogeneous solution, normal temperature leaves standstill 10h, obtains colloidal sol;
(2) add chitin nano fiber by the colloidal sol obtained in step (1), then ultrasonic disperse, ageing 48h under room temperature, then at 100 DEG C of dry 4h, obtain material for air purification.
Comparative example 6
Various raw material is taken according to hereinafter described ratio of quality and the number of copies:
A preparation method for above-mentioned material for air purification, comprises the following steps:
Add tetrabutyl titanate, nano aluminium oxide and polyethylene glycol by weight, then add absolute ethyl alcohol and distilled water, stir, be made into homogeneous solution, normal temperature leaves standstill 8h, obtains colloidal sol; Then ultrasonic disperse, ageing 32h under room temperature, then at 90 DEG C of dry 6h, obtains material for air purification material.
Test material for air purification prepared by embodiment 1-5 and comparative example 6, the main material for air purification that measures is to the degradation property of pollutant and stability.Test result is as shown in table 1.
Method of testing is: in the closed container filling benzene, formaldehyde, ammonia, hydrogen sulfide, NO respectively, initial concentration is 100mg/l, above-mentioned obtained various materials are tested respectively to the degradation property of organic pollution under ultraviolet lamp irradiates, use chromatographic pollutant residual concentration after 30 minutes, thus can palliating degradation degree be learnt.
Table 1
Claims (4)
1. a material for air purification for doped aluminium, is characterized in that, described material for air purification comprises following component, each component by weight:
2. the material for air purification of a kind of doped aluminium according to claim 1, is characterized in that: the particle diameter of described nano aluminium oxide is 20-100nm.
3. a preparation method for the material for air purification of doped aluminium, is characterized in that, said method comprising the steps of:
(1) mixed according to following proportioning by raw material, stir, normal temperature leaves standstill 5-10h, prepares colloidal sol;
(2) add 20-40 part chitin nano fiber in the colloidal sol obtained in step (1), ultrasonic disperse, ageing under room temperature, then at 80-100 DEG C of dry 4-8h, obtain material for air purification material.
4. the preparation method of the material for air purification of a kind of doped aluminium according to claim 3, is characterized in that: the digestion time described in step (2) is 24-48h.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510849251.1A CN105289754A (en) | 2015-11-28 | 2015-11-28 | Alumina-doped air purification material and preparation method thereof |
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| CN201510849251.1A CN105289754A (en) | 2015-11-28 | 2015-11-28 | Alumina-doped air purification material and preparation method thereof |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003275287A (en) * | 2002-03-25 | 2003-09-30 | Toshiharu Fujiwara | Air purifier |
| CN1583248A (en) * | 2004-05-26 | 2005-02-23 | 鞍山市环境保护研究所 | SiO2/TiO2 composite nanometer photocatalysis membrane for treating indoor light pollution air and preparing method thereof |
| CN102974321A (en) * | 2012-12-31 | 2013-03-20 | 青岛信锐德科技有限公司 | ZnO-doped TiO2 air purifying preparation material with lignin as carrier as well as preparation method and application thereof |
| CN103028399A (en) * | 2012-12-28 | 2013-04-10 | 青岛信锐德科技有限公司 | Alumina microsphere air purifying agent, preparation method and application of air purifying agent |
-
2015
- 2015-11-28 CN CN201510849251.1A patent/CN105289754A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003275287A (en) * | 2002-03-25 | 2003-09-30 | Toshiharu Fujiwara | Air purifier |
| CN1583248A (en) * | 2004-05-26 | 2005-02-23 | 鞍山市环境保护研究所 | SiO2/TiO2 composite nanometer photocatalysis membrane for treating indoor light pollution air and preparing method thereof |
| CN103028399A (en) * | 2012-12-28 | 2013-04-10 | 青岛信锐德科技有限公司 | Alumina microsphere air purifying agent, preparation method and application of air purifying agent |
| CN102974321A (en) * | 2012-12-31 | 2013-03-20 | 青岛信锐德科技有限公司 | ZnO-doped TiO2 air purifying preparation material with lignin as carrier as well as preparation method and application thereof |
Non-Patent Citations (2)
| Title |
|---|
| 聂祚仁等: "《生态环境材料学》", 31 May 2004 * |
| 董如林等: ""聚乙二醇模板剂的成孔机理"", 《化工新型材料》 * |
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Application publication date: 20160203 |