CN105478173A - Air cleaning material and preparation method thereof - Google Patents

Air cleaning material and preparation method thereof Download PDF

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Publication number
CN105478173A
CN105478173A CN201510844992.0A CN201510844992A CN105478173A CN 105478173 A CN105478173 A CN 105478173A CN 201510844992 A CN201510844992 A CN 201510844992A CN 105478173 A CN105478173 A CN 105478173A
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Prior art keywords
air purification
parts
tio2
preparation
colloidal sol
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CN201510844992.0A
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韦昱灵
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J31/00—Catalysts comprising hydrides, coordination complexes or organic compounds
    • B01J31/26—Catalysts comprising hydrides, coordination complexes or organic compounds containing in addition, inorganic metal compounds not provided for in groups B01J31/02 - B01J31/24
    • B01J31/38—Catalysts comprising hydrides, coordination complexes or organic compounds containing in addition, inorganic metal compounds not provided for in groups B01J31/02 - B01J31/24 of titanium, zirconium or hafnium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/86—Catalytic processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/86—Catalytic processes
    • B01D53/8668—Removing organic compounds not provided for in B01D53/8603 - B01D53/8665
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/86—Catalytic processes
    • B01D53/88—Handling or mounting catalysts

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Analytical Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Catalysts (AREA)
  • Exhaust Gas Treatment By Means Of Catalyst (AREA)

Abstract

The invention belongs to the technical field of functional materials and discloses an air cleaning material. The air cleaning material comprises, by weight, 50-90 parts of nanometer titanium dioxide, 2-10 parts of methyltrimethoxysilane, 20-40 parts of chitin nanometer fibers, 3-10 parts of polyethylene glycol, 200-500 parts of anhydrous ethanol and 10-50 parts of water. Through uniform doping of silica, high surface energy-caused TiO2 agglomeration along with time is avoided and stable photocatalytic activity in long time is kept. Through use of polyethylene glycol, uniform fine micropores are formed on the compact surface of TiO2 and TiO2 surface agglomeration is avoided. Through chitin nanometer fiber adsorption, a pollutant concentration on the surface is improved and a basis is provided for smooth photocatalysis of TiO2.

Description

A kind of material for air purification and preparation method thereof
Technical field
The invention belongs to technical field of function materials, relate to a kind of cleanser, particularly relate to a kind of material for air purification 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 a kind of material for air purification and preparation method thereof.
In order to realize foregoing invention object, the technical solution used in the present invention is as follows:
A kind of material for air purification, described material for air purification comprises following component, each component by weight:
Preferably, the particle diameter of described nano titanium oxide is 20-100nm.
The present invention also provides a kind of preparation method of material for air purification, said method comprising the steps of:
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. generate silica by MTMS hydrolysis, Uniform Doped silica, 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 tetraethyl titanate, MTMS 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 tetraethyl titanate, MTMS 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 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 tetraethyl titanate, MTMS 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 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 tetraethyl titanate, MTMS 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 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 tetraethyl titanate, MTMS 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.
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 tetraethyl titanate, MTMS 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, is characterized in that, described material for air purification comprises following component, each component by weight:
。
2. a kind of material for air purification according to claim 1, is characterized in that: the particle diameter of described nano titanium oxide is 20-100nm.
3. a preparation method for material for air purification, 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 a kind of material for air purification according to claim 3, is characterized in that: the digestion time described in step (2) is 24-48h.
CN201510844992.0A 2015-11-28 2015-11-28 Air cleaning material and preparation method thereof Pending CN105478173A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106423102A (en) * 2016-11-23 2017-02-22 广西大学 Air purification material and preparation method thereof
CN109939501A (en) * 2019-04-03 2019-06-28 西安飞机工业（集团）有限责任公司 A kind of milling glue spraying waste gas processing method containing tetrachloro-ethylene

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102079877A (en) * 2010-12-02 2011-06-01 杭州格灵新材料科技有限公司 Preparation method for high-performance LED encapsulation material
CN102660153A (en) * 2012-04-28 2012-09-12 常州大学 Method for modifying nanometer titanium dioxide
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
CN103525134A (en) * 2013-09-22 2014-01-22 中国水产科学研究院东海水产研究所 Surface modification method of nano-titanium dioxide

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102079877A (en) * 2010-12-02 2011-06-01 杭州格灵新材料科技有限公司 Preparation method for high-performance LED encapsulation material
CN102660153A (en) * 2012-04-28 2012-09-12 常州大学 Method for modifying nanometer titanium dioxide
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
CN103525134A (en) * 2013-09-22 2014-01-22 中国水产科学研究院东海水产研究所 Surface modification method of nano-titanium dioxide

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
沈新元: "《化学纤维手册》", 30 September 2008 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106423102A (en) * 2016-11-23 2017-02-22 广西大学 Air purification material and preparation method thereof
CN109939501A (en) * 2019-04-03 2019-06-28 西安飞机工业（集团）有限责任公司 A kind of milling glue spraying waste gas processing method containing tetrachloro-ethylene

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