CN103252225A - Photocatalytic degradation composite particle as well as preparation method and application thereof - Google Patents
Photocatalytic degradation composite particle as well as preparation method and application thereof Download PDFInfo
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- CN103252225A CN103252225A CN2013101590336A CN201310159033A CN103252225A CN 103252225 A CN103252225 A CN 103252225A CN 2013101590336 A CN2013101590336 A CN 2013101590336A CN 201310159033 A CN201310159033 A CN 201310159033A CN 103252225 A CN103252225 A CN 103252225A
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Abstract
The invention relates to a photocatalytic degradation composite particle which is characterized by comprising the following components: nanometer anatase TiO2, a micrometer porous material kieselguhr and a dispersing solution, wherein the dispersing solution is a mixture of a coupling agent and industrial alcohol; and the mass ratio of the nanometer anatase TiO2 to the micrometer porous material kieselguhr to the coupling agent to the industrial alcohol is 1:(2-6):(0.1-0.3):(2-4). The invention also relates to a preparation method and an application of the photocatalytic degradation composite particle. The photocatalytic degradation composite particle disclosed by the invention has the advantages that the tail gas absorption can be increased; the light absorption area is improved; the photocatalytic efficiency is improved; the effective degradation of urban road tail gas can be realized; and the damage of the tail gas pollution to the environment is reduced.
Description
Technical field
The present invention relates to a kind of photocatalytic degradation composite particles for pavement automobile exhaust degrading and its preparation method and application, belong to the automobile exhaust degrading technical field of city asphalt roads.
Background technology
Along with industrialization and urbanization sustained and rapid development, automobile (containing low-speed cars) recoverable amount increases severely, and the year two thousand twenty will reach 13,103 ten thousand automobiles.Automobile has also brought a large amount of motor vehicle exhaust emissions to the city when improving people's living standard.Motor vehicle exhaust emission is becoming one of important source of urban atmospheric pollution, and some metropolitan atmosphere pollution are gradually by coal smoke type car of turning direction tail gas pollution type, or becomes and have the two comprehensive pollution feature.In the city, traditional coal-smoke pollution is not controlled as yet, and the compound atmosphere pollution that vehicle exhaust brings but becomes increasingly conspicuous.A large amount of nitrogen oxide and volatile organic matter cause secondary pollutions such as fine particle in the city, ozone, acid rain to be aggravation situation.The loss that causes thus accounts for 5% of China GDP, and automobile exhaust pollution is administered very urgent.
Automobile exhaust pollution problem in the city mainly takes measures to control from aspects such as " Che-Lu " at present.Set about from car, efficient automobile tail gas clean-up technology, promoting vehicular discharge control level is to reduce the major measure of tail gas pollution at present, but insoluble problems such as catalytic conversion, catalyst failure, cost also occurred.Set about TiO from the road
2The load method is effective method the most.TiO
2Load on the road surface by pitch (patent 03131764.2), binding agent (patent 200710144762.9).TiO
2Be used for the road surface by the modified pitch mode, not only consumption is many, and TiO
2Wrapped up by dark asphalt, the disposal efficiency can not get effective raising.Patent (CN 101703889 B) has proposed shoddy load TiO
2Method, patent (201110215822.8) has proposed shoddy loaded Ag-TiO
2Method is by means of the big specific area of rubber powder, TiO
2Photocatalytic degradation efficient be greatly improved.These patented technologies have improved TiO
2The light contact area improves degradation efficiency.Though but rubber powder has large surface area, do not have porous, a little less than the adsorptivity, can't the tail gas of active adsorpting aggregation on the road surface.
Summary of the invention
For solving the deficiencies in the prior art, the object of the present invention is to provide a kind of tail gas, increase TiO that can initiatively adsorb the top, road surface
2The light absorption area, improved photocatalytic degradation composite particles of road surface photocatalysis efficiency and its preparation method and application.
For achieving the above object, the present invention is achieved by the following technical solutions:
A kind of photocatalytic degradation composite particles is characterized in that, comprises following component: nano-scale anatase TiO
2, micrometer level porous material diatomite and dispersion soln, described dispersion soln is the mixture of coupling agent and industrial alcohol, wherein, described nano-scale anatase TiO
2, micrometer level porous material diatomite, coupling agent and industrial alcohol mass ratio be: 1:2 ~ 6:0.1 ~ 0.3:2 ~ 4.
Further, the diatomaceous particle diameter of described micrometer level porous material is 30～150 μ m, and described nano-scale anatase TiO
2Particle diameter be 15～100nm.
Described coupling agent is any one in silane coupler gamma-aminopropyl-triethoxy-silane, γ-glycidyl ether oxygen base propyl trimethoxy silicane, the titanate coupling agent 102.
A kind of preparation method of photocatalytic degradation composite particles is characterized in that, may further comprise the steps:
A, with nano-scale anatase TiO
2Seal up for safekeeping after putting into 110 ℃ of baking oven baking 12h;
B, 30min is cleaned with clear water or ultrasonic wave in micrometer level porous material diatomite surface, seal up for safekeeping after toasting 12h at 110 ℃ with far infrared drying oven then;
C, the nano-scale anatase TiO after will drying
2With micrometer level porous material diatomite be that 1:2 ~ 6 are put into mixer and disperseed according to mass ratio, mixing speed 2000rpm, mixing time is 40～60min;
D, will with nano-scale anatase TiO
2The mass ratio industrial alcohol that is respectively the coupling agent of 1:0.1-0.3 and 1:2-4 be configured to dispersion soln after mixing, simultaneously with the nano-scale anatase TiO of dispersion soln and step c preparation
2Add together in the there-necked flask that has condenser pipe with the diatomaceous mixture of micrometer level porous material and to add thermal agitation, and distill recovery, be heated to 80 ℃ of insulation 12h then, obtain the photocatalytic degradation composite particles.
A kind of photocatalytic degradation composite particles perhaps is attached to the road surface by emulsified bitumen slurry cover method by being sprayed on the hot black top road surface, perhaps is sprayed at the road surface as the road paint composition.
And the consumption of described photocatalytic degradation composite particles is 0.15g ~ 0.25g/ ㎡.
The invention has the beneficial effects as follows: diatomite of the present invention has characteristics such as specific area is big, porosity is big, absorbability is strong, raising adhesive force, by diatomaceous porous network structure and high-specific surface area characteristic, the tail gas of top, road surface can not only be adsorbed positively, TiO can also be made
2Particle absorbs light at three dimensions, increases the light absorption area, and its absorbing synergic effect has improved the degraded of composite particles road pavement vehicle exhaust significantly; Diatomaceous surface has strong polar bond simultaneously, is easy to and selected action of coupling agents, to TiO
2Cohesive force strong, difficult drop-off.By photocatalytic degradation composite particles (TiO
2/ diatomite degraded composite particles) preparation increases the absorption area that tail gas absorbs, improves light, improves the catalytic efficiency of light, realizes the effective degraded to urban road tail gas, reduces tail gas pollution to environment damage.
The specific embodiment
Below in conjunction with the specific embodiment the present invention is carried out concrete introduction.
Embodiment 1
By mass, with 20 parts of nano-scale anatase TiO
2Seal up for safekeeping after putting into 110 ℃ of baking oven baking 12h, 40 parts of micrometer level porous material diatomite surfaces are washed with clear water, seal up for safekeeping behind 110 ℃ of baking 12h with far infrared drying oven.With the nano-scale anatase TiO after the oven dry
2Put into mixer with micrometer level porous material diatomite by mass ratio 1:2 and disperse, mixing speed 2000rpm, mixing time is 40min; 2 parts of silane coupler gamma-aminopropyl-triethoxy-silanes and 40 parts of industrial alcohols are configured to dispersion soln, with the nano-scale anatase TiO after the dispersion
2, micrometer level porous material diatomite adds together in the there-necked flask that has condenser pipe and adds thermal agitation, distillation is reclaimed, and is heated to 80 ℃ of insulation 12h then, makes photocatalytic degradation composite particles (TiO
2/ diatomite degraded composite particles.
Embodiment 2
By mass, with 20 parts of nano-scale anatase TiO
2Seal up for safekeeping after putting into 110 ℃ of baking oven baking 12h, 100 parts of micrometer level porous material diatomite surfaces are washed with clear water, seal up for safekeeping behind 110 ℃ of baking 12h with far infrared drying oven.With the nano-scale anatase TiO after the oven dry
2Put into mixer with micrometer level porous material diatomite by mass ratio 1:2 and disperse, mixing speed 2000rpm, mixing time is 60min; 5 parts of silane coupler γ-glycidyl ether oxygen base propyl trimethoxy silicanes and 60 parts of industrial alcohols are configured to dispersion soln, with the nano-scale anatase TiO after the dispersion
2, micrometer level porous material diatomite adds together in the there-necked flask that has condenser pipe and adds thermal agitation, distillation is reclaimed, and is heated to 80 ℃ of insulation 12h then, makes photocatalytic degradation composite particles (TiO
2/ diatomite degraded composite particles).
Embodiment 3
By mass, with 20 parts of nano-scale anatase TiO
2Seal up for safekeeping after putting into 110 ℃ of baking oven baking 12h, 30min is cleaned with ultrasonic wave in 60 parts of micrometer level porous material diatomite surfaces, seal up for safekeeping behind 110 ℃ of baking 12h with far infrared drying oven.With the nano-scale anatase TiO after the oven dry
2Put into mixer with micrometer level porous material diatomite by mass ratio 1:3 and disperse, mixing speed 2000rpm, mixing time is 60min; 4 parts of titanate coupling agents 102 and 50 parts of industrial alcohols are configured to dispersion soln, with the nano-scale anatase TiO after the dispersion
2, micrometer level porous material diatomite adds together in the there-necked flask that has condenser pipe and adds thermal agitation, distillation is reclaimed, and is heated to 80 ℃ of insulation 12h then, makes photocatalytic degradation composite particles (TiO
2/ diatomite degraded composite particles).
Embodiment 4
The catalytic degradation efficient studies of composite particles:
Rolling legal system by T0703-1993 in " highway engineering pitch and asphalt testing regulations " is made the rut plate test coupon, and grating is AC-13C, and sample dimensions is 30cm * 6cm * 5cm.Test specimen is cut into 30cm * 6cm * 5cm(length * wide * height) the bar shaped test specimen.The composite particles of preparation among the embodiment 1,2 and 3 is sent forth on the rut plate of the AC-13C that scribbles emulsified asphalt by 0.2g/ ㎡, after the curing, the rut plate is placed on carries out the tail gas degradation experiment under the xenon lamp.Because the NO in the tail gas
xMainly be converted into NO
2, and its toxicity is the strongest, thus in experiment with NO
2Verify the catalytic degradation efficient of the tail gas of coating as object gas.
Use NO in gas detecting and alarming instrument (BX80) the detection reaction case
2Concentration, the record 60min in NO
2The change in concentration situation, and with initial concentration contrast, converse NO
2Degradation efficiency.Temperature and humidity is controlled in conjunction with the warming and humidifying device by Hygrothermograph respectively in the reaction.Initial NO
2Concentration: 20ppm, 18 ℃ of temperature, humidity 55%, illumination are 3000lx.The NO of degraded vehicle exhaust
2Concentration is as shown in table 1 over time.
The NO of table 1 vehicle exhaust
2Degradation rate (%) over time
Description of test: when degradation time behind 50min, the NO in three examples
2Degraded finishes substantially, and degradation rate surpasses 84%, the NO of system
2Major part is degraded.This shows that this composite particles has NO preferably
2Degradation rate, the pavement automobile exhaust of can effectively degrading.
The present invention is illustrated according to above-described embodiment, should be appreciated that above-described embodiment does not limit the present invention in any form, and all employings are equal to replaces or technical scheme that the equivalent transformation mode obtains, all drops within protection scope of the present invention.
Claims (6)
1. a photocatalytic degradation composite particles is characterized in that, comprises following component: nano-scale anatase TiO
2, micrometer level porous material diatomite and dispersion soln, described dispersion soln is the mixture of coupling agent and industrial alcohol, wherein, described nano-scale anatase TiO
2, micrometer level porous material diatomite, coupling agent and industrial alcohol mass ratio be: 1:2 ~ 6:0.1 ~ 0.3:2 ~ 4.
2. a kind of photocatalytic degradation composite particles according to claim 1 is characterized in that, the diatomaceous particle diameter of described micrometer level porous material is 30～150 μ m, and described nano-scale anatase TiO
2Particle diameter be 15～100nm.
3. a kind of photocatalytic degradation composite particles according to claim 1, it is characterized in that described coupling agent is any one in silane coupler gamma-aminopropyl-triethoxy-silane, γ-glycidyl ether oxygen base propyl trimethoxy silicane, the titanate coupling agent 102.
4. the preparation method of a photocatalytic degradation composite particles is characterized in that, may further comprise the steps:
A, with nano-scale anatase TiO
2Seal up for safekeeping after putting into 110 ℃ of baking oven baking 12h;
B, 30min is cleaned with clear water or ultrasonic wave in micrometer level porous material diatomite surface, seal up for safekeeping after toasting 12h at 110 ℃ with far infrared drying oven then;
C, the nano-scale anatase TiO after will drying
2With micrometer level porous material diatomite be that 1:2 ~ 6 are put into mixer and disperseed according to mass ratio, mixing speed 2000rpm, mixing time is 40～60min;
D, will with nano-scale anatase TiO
2The mass ratio industrial alcohol that is respectively the coupling agent of 1:0.1-0.3 and 1:2-4 be configured to dispersion soln after mixing, simultaneously with the nano-scale anatase TiO of dispersion soln and step c preparation
2Add together in the there-necked flask that has condenser pipe with the diatomaceous mixture of micrometer level porous material and to add thermal agitation, and distill recovery, be heated to 80 ℃ of insulation 12h then, obtain the photocatalytic degradation composite particles.
5. a photocatalytic degradation composite particles perhaps is attached to the road surface by emulsified bitumen slurry cover method by being sprayed on the hot black top road surface, perhaps is sprayed at the road surface as the road paint composition.
6. the application of a kind of photocatalytic degradation composite particles according to claim 5 is characterized in that, the consumption of described photocatalytic degradation composite particles is 0.15g ~ 0.25g/ ㎡.
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105126924A (en) * | 2015-09-14 | 2015-12-09 | 南京林业大学 | Preparation method of light-weight asphalt mixture with photocatalytic degradation function |
| CN105170083A (en) * | 2015-09-14 | 2015-12-23 | 南京林业大学 | Method for improving degrading effect of asphalt road for automobile exhaust by utilizing activated carbon adsorbability |
| CN105214600A (en) * | 2015-09-14 | 2016-01-06 | 南京林业大学 | A kind of modified nano-titanium dioxide preparation method adapting to highway tunnel illumination condition |
| CN105923695A (en) * | 2016-07-13 | 2016-09-07 | 成都优纳新材料有限公司 | Photocatalyst active carbon floating sphere and preparation method thereof |
| CN106215363A (en) * | 2016-06-16 | 2016-12-14 | 成都市图腾环保科技有限公司 | Photocatalyst goes the application of a good appetite suddenly appearing in a serious disease at synthetic material runway cover harmful substance |
| CN106311308A (en) * | 2016-09-06 | 2017-01-11 | 南京林业大学 | Preparation method of nitrogen-vanadium codoped titanium dioxide photocatalyst for tunnel asphalt pavement |
| CN106391083A (en) * | 2016-09-06 | 2017-02-15 | 南京林业大学 | Preparation method of nitrogen doped titanium dioxide photocatalyst for tunnel coatings |
| CN107029757A (en) * | 2017-05-22 | 2017-08-11 | 湖南城市学院 | A kind of preparation method of BiOX diatomite composite photocatalytic agent |
| CN108708245A (en) * | 2018-06-05 | 2018-10-26 | 海宁诺昊新材料有限公司 | A kind of laying method of photocatalysis bituminous paving |
| CN109748546A (en) * | 2019-03-09 | 2019-05-14 | 华北水利水电大学 | Has the slurry mixture and preparation method thereof of environment-friendly function |
| CN111359621A (en) * | 2020-03-09 | 2020-07-03 | 南昌航空大学 | Photocatalytic degradation composite particle and preparation method and application thereof |
| CN112080118A (en) * | 2020-09-29 | 2020-12-15 | 中星中大印刷（深圳）有限公司 | Degradable polylactic acid plastic |
-
2013
- 2013-05-03 CN CN201310159033.6A patent/CN103252225B/en active Active
Non-Patent Citations (6)
| Title |
|---|
| 何媛媛等: "TiO2硅藻土复合光催化剂研制及光催化氧化水中亚甲基蓝的研究", 《染料与染色》 * |
| 李丽等: "南京长江三桥光催化功能性混凝土路去除汽车排放氮氧化物的研究", 《河南科技大学学报: 自然科学版》 * |
| 李艳等: "静电自组装制备硅藻土负载纳米TiO2光催化材料", 《纳米技术与精密工程》 * |
| 杨群等: "TiO2 改性沥青分散性与抗老化性能", 《同济大学学报( 自然科学版)》 * |
| 谭忆秋等: "可降解汽车尾气材料在沥青路面中的应用性能评价", 《中国公路学报》 * |
| 马玺等: "TiO2/硅藻土复合光催化材料的制备与光催化性能研究", 《非金属矿》 * |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105126924A (en) * | 2015-09-14 | 2015-12-09 | 南京林业大学 | Preparation method of light-weight asphalt mixture with photocatalytic degradation function |
| CN105170083A (en) * | 2015-09-14 | 2015-12-23 | 南京林业大学 | Method for improving degrading effect of asphalt road for automobile exhaust by utilizing activated carbon adsorbability |
| CN105214600A (en) * | 2015-09-14 | 2016-01-06 | 南京林业大学 | A kind of modified nano-titanium dioxide preparation method adapting to highway tunnel illumination condition |
| CN105126924B (en) * | 2015-09-14 | 2018-03-20 | 南京林业大学 | A kind of light asphalt mixture preparation method with photocatalytic degradation function |
| CN106215363A (en) * | 2016-06-16 | 2016-12-14 | 成都市图腾环保科技有限公司 | Photocatalyst goes the application of a good appetite suddenly appearing in a serious disease at synthetic material runway cover harmful substance |
| CN105923695A (en) * | 2016-07-13 | 2016-09-07 | 成都优纳新材料有限公司 | Photocatalyst active carbon floating sphere and preparation method thereof |
| CN106391083A (en) * | 2016-09-06 | 2017-02-15 | 南京林业大学 | Preparation method of nitrogen doped titanium dioxide photocatalyst for tunnel coatings |
| CN106311308A (en) * | 2016-09-06 | 2017-01-11 | 南京林业大学 | Preparation method of nitrogen-vanadium codoped titanium dioxide photocatalyst for tunnel asphalt pavement |
| CN107029757A (en) * | 2017-05-22 | 2017-08-11 | 湖南城市学院 | A kind of preparation method of BiOX diatomite composite photocatalytic agent |
| CN108708245A (en) * | 2018-06-05 | 2018-10-26 | 海宁诺昊新材料有限公司 | A kind of laying method of photocatalysis bituminous paving |
| CN108708245B (en) * | 2018-06-05 | 2019-05-21 | 海宁诺昊新材料有限公司 | A kind of laying method of photocatalysis bituminous pavement |
| CN109748546A (en) * | 2019-03-09 | 2019-05-14 | 华北水利水电大学 | Has the slurry mixture and preparation method thereof of environment-friendly function |
| CN111359621A (en) * | 2020-03-09 | 2020-07-03 | 南昌航空大学 | Photocatalytic degradation composite particle and preparation method and application thereof |
| CN112080118A (en) * | 2020-09-29 | 2020-12-15 | 中星中大印刷（深圳）有限公司 | Degradable polylactic acid plastic |
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Address after: 210014 Ziyun Road, Qinhuai District, Jiangsu, No. 9, No. Patentee after: CHINA DESIGN GROUP Co.,Ltd. Address before: Zhongshan South Road, Baixia District of Nanjing city of Jiangsu Province, No. 342 210005 Patentee before: Jiangsu Provincial Communications Planning and Design Institute Co.,Ltd. |
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