CN104909633A - Preparation method of polymer cement mortar made of TiO2-flyash composite photocatalytic material - Google Patents
Preparation method of polymer cement mortar made of TiO2-flyash composite photocatalytic material Download PDFInfo
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- CN104909633A CN104909633A CN201510301141.1A CN201510301141A CN104909633A CN 104909633 A CN104909633 A CN 104909633A CN 201510301141 A CN201510301141 A CN 201510301141A CN 104909633 A CN104909633 A CN 104909633A
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- Prior art keywords
- flyash
- tio
- cement mortar
- preparation
- water
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- 239000010881 fly ash Substances 0.000 title claims abstract description 46
- 239000000463 material Substances 0.000 title claims abstract description 19
- 239000011433 polymer cement mortar Substances 0.000 title claims abstract description 19
- 239000002131 composite material Substances 0.000 title claims abstract description 16
- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- 230000001699 photocatalysis Effects 0.000 title abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 27
- 239000004568 cement Substances 0.000 claims abstract description 21
- 239000011325 microbead Substances 0.000 claims abstract description 16
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims abstract description 8
- 239000004576 sand Substances 0.000 claims abstract description 8
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 16
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 15
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 14
- 229910010413 TiO 2 Inorganic materials 0.000 claims description 13
- 239000011941 photocatalyst Substances 0.000 claims description 11
- 229960000583 acetic acid Drugs 0.000 claims description 8
- YHWCPXVTRSHPNY-UHFFFAOYSA-N butan-1-olate;titanium(4+) Chemical compound [Ti+4].CCCC[O-].CCCC[O-].CCCC[O-].CCCC[O-] YHWCPXVTRSHPNY-UHFFFAOYSA-N 0.000 claims description 8
- 239000012362 glacial acetic acid Substances 0.000 claims description 8
- 239000011240 wet gel Substances 0.000 claims description 8
- 239000000243 solution Substances 0.000 claims description 7
- 238000003756 stirring Methods 0.000 claims description 7
- 239000000126 substance Substances 0.000 claims description 7
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 6
- 229960000935 dehydrated alcohol Drugs 0.000 claims description 6
- 239000002253 acid Substances 0.000 claims description 4
- 230000001476 alcoholic effect Effects 0.000 claims description 4
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 4
- 239000011707 mineral Substances 0.000 claims description 4
- 229920003171 Poly (ethylene oxide) Polymers 0.000 claims description 3
- 239000004567 concrete Substances 0.000 claims description 3
- 238000000227 grinding Methods 0.000 claims description 3
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 claims description 3
- 239000004005 microsphere Substances 0.000 claims description 3
- -1 polyoxyethylene Polymers 0.000 claims description 3
- 238000012216 screening Methods 0.000 claims description 3
- QJZYHAIUNVAGQP-UHFFFAOYSA-N 3-nitrobicyclo[2.2.1]hept-5-ene-2,3-dicarboxylic acid Chemical compound C1C2C=CC1C(C(=O)O)C2(C(O)=O)[N+]([O-])=O QJZYHAIUNVAGQP-UHFFFAOYSA-N 0.000 claims description 2
- 239000002956 ash Substances 0.000 claims description 2
- 238000001354 calcination Methods 0.000 claims description 2
- 239000011280 coal tar Substances 0.000 claims description 2
- 239000004021 humic acid Substances 0.000 claims description 2
- 238000010348 incorporation Methods 0.000 claims description 2
- 229920005610 lignin Polymers 0.000 claims description 2
- 239000011259 mixed solution Substances 0.000 claims description 2
- 229920000333 poly(propyleneimine) Polymers 0.000 claims description 2
- 239000002994 raw material Substances 0.000 claims description 2
- 230000001105 regulatory effect Effects 0.000 claims description 2
- IIACRCGMVDHOTQ-UHFFFAOYSA-M sulfamate Chemical compound NS([O-])(=O)=O IIACRCGMVDHOTQ-UHFFFAOYSA-M 0.000 claims description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 abstract description 12
- 238000003912 environmental pollution Methods 0.000 abstract description 3
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000012824 chemical production Methods 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 238000002156 mixing Methods 0.000 abstract 1
- 238000000746 purification Methods 0.000 abstract 1
- 238000003980 solgel method Methods 0.000 abstract 1
- 238000007146 photocatalysis Methods 0.000 description 6
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 3
- 229960004756 ethanol Drugs 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000499 gel Substances 0.000 description 2
- 238000013033 photocatalytic degradation reaction Methods 0.000 description 2
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000011083 cement mortar Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000005357 flat glass Substances 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000008204 material by function Substances 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000011112 process operation Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- 229910052724 xenon Inorganic materials 0.000 description 1
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 1
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Abstract
The invention discloses a preparation method of a polymer cement mortar made of a TiO2-flyash composite photocatalytic material, which relates to the field of chemical production methods. The preparation method disclosed by the invention comprises the following technological steps: preparing TiO2 by using a sol-gel method, and loading the TiO2 on cleaned fly-ash micro-beads; carrying out heat treatment on the obtained object at a temperature of 550 DEG C, so that TiO2/fly-ash composite micro-beads are obtained; and mixing cement, water, sand, a water reducing agent and the TiO2/fly-ash composite micro-beads in certain proportion, so that the polymer cement mortar is obtained. The method disclosed by the invention is simple in production process; the TiO2/fly-ash composite micro-beads as a mixed material of cement are doped into the cement, so that the environmental pollution problem caused by fly-ash is solved, the energy consumption of the cement can be reduced, and various properties of a cement based composite material can be changed, therefore, a traditional cement based material has certain electrical conductivity and electromagnetic properties and better wave absorbing properties and mechanical properties; and after the polymer cement mortar is applied to a pavement material, the purpose of secondary purification of vehicle emission exhausts can be achieved.
Description
Technical field:
The invention belongs to chemicals production method, specifically a kind of TiO
2with the preparation method of the polymer cement mortar of flyash composite photocatalyst material.
Background technology:
Due to developing rapidly of modern industry, problem of environmental pollution has become the mankind topmost threat, particularly oxynitrides to the pollution of air, is an environmental problem being worth solving.
In recent years, the improvement that photocatalysis oxidation technique is applied to environmental pollutant has become the focus, particularly nano-TiO of Research of Environmental Sciences
2as a kind of important semiconducting inorganic functional materials, be widely used in photocatalysis treatment of waste water because it has unique physics and spectrochemical property and purify air, the field such as solar cell, gas sensor, wrapping material, coating.
Flyash is one of maximum industrial residue of current quantity discharged and amount of storage; but its utilization ratio is less than 40%; so how effectively to utilize flyash to be a problem being worth inquiring into; in order to make full use of; our thinking is that itself and titanium dioxide are carried out load; this is because it has larger specific surface area and high absorption property; and mixed in cement; this has also carried out effective degraded to the discharge of the oxynitrides in air or in vehicle exhaust, so have certain economic benefit and Function in Environmental with regard to effectively make use of flyash.
Summary of the invention:
A kind of TiO
2with the preparation method of the polymer cement mortar of flyash composite photocatalyst material, desired raw material comprises flyash, mineral acid, water, dehydrated alcohol, Glacial acetic acid, the alcoholic solution of tetrabutyl titanate, polymkeric substance, methyl alcohol, cement, water, sand and water reducer; Specifically
Method comprises the following steps:
(1) screening of flyash: after the grinding of flyash appropriateness, adopt the method for wet concentration to filter out drift pearl and heavy pearl, the heavy pearl chosen is as the carrier of load;
(2) wet gel is prepared: under room temperature, the pH value first regulating the mixed solution of dehydrated alcohol and water (V alcohol: V water=1:4 ~ 25) with mineral acid is 1 ~ 4, then be added drop-wise in the alcoholic solution of the tetrabutyl titanate containing a certain amount of fly ash micro-sphere and Glacial acetic acid slowly, drip the methanol solution of the polymkeric substance of 0.1 ~ 20wt% again, stir 0.5 ~ 10h, obtain wet gel;
(3) TiO is prepared
2with flyash compounded microbeads: wet gel is put in an oven with 80 ~ 100 DEG C dry 2 ~ 6h, obtain xerogel, then ground and put into crucible, 450 ~ 650 DEG C of calcinings obtain TiO
2with flyash compounded microbeads;
(4) polymer cement mortar is prepared: by the cement of a proportioning, water, sand, water reducer and TiO
2polymer cement mortar is mixed and made into flyash compounded microbeads.
In step (2), the volume ratio of Glacial acetic acid, tetrabutyl titanate and dehydrated alcohol is 1:3:7 ~ 10.
In step (4), cement: water: sand: water reducer=100:50 ~ 100:300:1 ~ 10, TiO
2be 0.5 ~ 20% of cement weight with the incorporation of flyash compounded microbeads.
Polymkeric substance used comprises polypropylene amine and polyoxyethylene glycol.
Cement used is ash concrete.
Water reducer used comprises Lignins, humic acid system, coal tar system and sulfamate system.
The present invention possesses following technological merit:
1, preparation technology is simple, and cheaper starting materials is easy to get.
2, process operation is simple, and preparation process is carried out in low temperature, and envrionment temperature such as to have no significant effect at the advantage.
3, effectively make use of flyash, the problem of environmental pollution that flyash brings can be solved, also the energy consumption of cement can be reduced, the various performances of cement-base composite material can be changed again, make traditional cement-based material have certain electroconductibility, electro permanent magnetic and good absorbing property and mechanical property.
4, the secondary-cleaned object that ground surface material can realize motor vehicle exhaust is used it for.
Embodiment:
Embodiment 1:
1) screening of flyash: after the grinding of flyash appropriateness, adopt the method for wet concentration to filter out drift pearl and heavy pearl, the heavy pearl chosen is as the carrier of load;
2) at room temperature, get 0.043ml deionized water respectively, 2ml ethanol adds in beaker, then regulate PH to be 2 ~ 3 with nitric acid, be designated as A;
3) get a small beaker, add 2ml ethanol and 0.043ml tetrabutyl titanate respectively, then add 0.2ml Glacial acetic acid, after at room temperature stirring 15min, then add 1g flyash inward, continue to stir 15min, be designated as B;
4) 0.3g polyoxyethylene glycol is added in the methanol solution of 5ml, be designated as C;
5) A is slowly added drop-wise in B, and vigorous stirring, add and continue to stir 5min, then drip C liquid, continue to stir 1h, obtain wet gel;
6) above wet gel is put into the baking oven 5h of 60 DEG C, obtain half-dried gel;
7) by prepare above gel in retort furnace 550 DEG C sintering 4h, formed TiO
2with flyash compounded microbeads photocatalyst material;
The feature of this catalyzer is: BET specific surface area is 870.1, and pore size distribution is 3-80nm,
Embodiment 2-11:
On the technique step Zou basis of above embodiment 1, change step Zou 1: the amount changing ethanol, water, Glacial acetic acid, tetrabutyl titanate and flyash, other processing step technical qualification are constant, the testing method of photocatalytic degradation NOX (oxynitrides): with Glass tubing (diameter 60mmx500mm) for testing nano-TiO
2with the photocatalysis efficiency of flyash compounded microbeads, at the middle part sheet glass of Glass tubing, Glass tubing is divided into upper and lower two portions, sample is put on top, and passes into mixed gas; Bottom is sealed, and does not pass into mixed gas.Carry out illumination at xenon lamp (300Wm2-) simulated solar irradiation, can be calculated photocatalysis efficiency according to the concentration of NOX in input gas and output gas, see the following form:
As seen from the above table, the photocatalyst material prepared has certain photocatalytic activity, and TiO
2when/fly ash micro-sphere is 1:1, the disposal efficiency is best.
The preparation of polymer cement mortar: cement: water: sand: water reducer=100:50:300:1, and the photocatalysis efficiency of test water cement mortar.
Table 2: the photocatalysis efficiency of different ratio sand-cement slurry
As seen from the above table, nano-TiO is not mixed
2during with flyash compounded microbeads, the efficiency of photocatalytic degradation NOX is zero, and works as TiO
2when being 1:1 with flyash compounded microbeads, its degradation efficiency is maximum, is 63.2%, illustrates that the standby polymer cement mortar of this legal system has certain economic and practical.
Claims (6)
1. a TiO
2preparation method with the polymer cement mortar of flyash composite photocatalyst material, is characterized in that: desired raw material comprises flyash, mineral acid, water, dehydrated alcohol, Glacial acetic acid, the alcoholic solution of tetrabutyl titanate, polymkeric substance, methyl alcohol, cement, water, sand and water reducer; Concrete grammar comprises the following steps:
(1) screening of flyash: after the grinding of flyash appropriateness, adopt the method for wet concentration to filter out drift pearl and heavy pearl, the heavy pearl chosen is as the carrier of load;
(2) wet gel is prepared: under room temperature, the pH value first regulating the mixed solution of dehydrated alcohol and water (V alcohol: V water=1:4 ~ 25) with mineral acid is 1 ~ 4, then be added drop-wise in the alcoholic solution of the tetrabutyl titanate containing a certain amount of fly ash micro-sphere and Glacial acetic acid slowly, drip the methanol solution of the polymkeric substance of 0.1 ~ 20wt% again, stir 0.5 ~ 10h, obtain wet gel;
(3) TiO is prepared
2with flyash compounded microbeads: wet gel is put in an oven with 80 ~ 100 DEG C dry 2 ~ 6h, obtain xerogel, then ground and put into crucible, 450 ~ 650 DEG C of calcinings obtain TiO
2with flyash compounded microbeads;
(4) polymer cement mortar is prepared: by the cement of a proportioning, water, sand, water reducer and TiO
2polymer cement mortar is mixed and made into flyash compounded microbeads.
2. a kind of TiO as claimed in claim 1
2preparation method with the polymer cement mortar of flyash composite photocatalyst material, is characterized in that: in step (2), the volume ratio of Glacial acetic acid, tetrabutyl titanate and dehydrated alcohol is 1:3:7 ~ 10.
3. a kind of TiO as claimed in claim 1
2preparation method with the polymer cement mortar of flyash composite photocatalyst material, is characterized in that: polymkeric substance used comprises polypropylene amine and polyoxyethylene glycol.
4. a kind of TiO as claimed in claim 1
2preparation method with the polymer cement mortar of flyash composite photocatalyst material, is characterized in that: cement used is ash concrete.
5. a kind of TiO as claimed in claim 1
2preparation method with the polymer cement mortar of flyash composite photocatalyst material, is characterized in that: in step (4), cement: water: sand: water reducer=100:50 ~ 100:300:1 ~ 10, TiO
2be 0.5 ~ 20% of cement weight with the incorporation of flyash compounded microbeads.
6. a kind of TiO as claimed in claim 1
2preparation method with the polymer cement mortar of flyash composite photocatalyst material, is characterized in that: water reducer used comprises Lignins, humic acid system, coal tar system and sulfamate system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510301141.1A CN104909633B (en) | 2015-06-05 | 2015-06-05 | A kind of TiO2With the preparation method of the polymer cement mortar of flyash composite photocatalyst material |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510301141.1A CN104909633B (en) | 2015-06-05 | 2015-06-05 | A kind of TiO2With the preparation method of the polymer cement mortar of flyash composite photocatalyst material |
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| Publication Number | Publication Date |
|---|---|
| CN104909633A true CN104909633A (en) | 2015-09-16 |
| CN104909633B CN104909633B (en) | 2017-08-08 |
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|---|---|---|---|
| CN201510301141.1A Expired - Fee Related CN104909633B (en) | 2015-06-05 | 2015-06-05 | A kind of TiO2With the preparation method of the polymer cement mortar of flyash composite photocatalyst material |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106747105A (en) * | 2016-12-31 | 2017-05-31 | 武汉理工大学 | A kind of photo catalytic cement mortar and preparation method thereof |
| CN107673647A (en) * | 2017-10-12 | 2018-02-09 | 王玉红 | Ripple additive and preparation method thereof is inhaled in a kind of cement base dedusting |
| CN108033719A (en) * | 2017-11-23 | 2018-05-15 | 四川建筑职业技术学院 | A kind of efficient multi-purpose photocatalysis concrete and preparation method thereof |
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| JP2007008740A (en) * | 2005-06-28 | 2007-01-18 | Ohbayashi Corp | Building material having adsorption function and photocatalytic function and method of manufacturing the same |
| CN101564685A (en) * | 2008-08-13 | 2009-10-28 | 厦门城市环境研究所 | Method for preparing photocatalytic material of titanium oxide immobilized on fly ash |
| CN101733087A (en) * | 2009-12-18 | 2010-06-16 | 南京大学 | Floating type TiO2/floating bead composite photochemical catalyst and preparation method and application thereof |
| CN102531497A (en) * | 2012-01-04 | 2012-07-04 | 河海大学 | Autoclaved aerated concrete (AAC) of nitrogen-doped titanium dioxide and preparation method thereof |
| CN104150823A (en) * | 2014-07-25 | 2014-11-19 | 长沙理工大学 | Preparation method of blended cement concrete capable of degrading NOx |
-
2015
- 2015-06-05 CN CN201510301141.1A patent/CN104909633B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007008740A (en) * | 2005-06-28 | 2007-01-18 | Ohbayashi Corp | Building material having adsorption function and photocatalytic function and method of manufacturing the same |
| CN101564685A (en) * | 2008-08-13 | 2009-10-28 | 厦门城市环境研究所 | Method for preparing photocatalytic material of titanium oxide immobilized on fly ash |
| CN101733087A (en) * | 2009-12-18 | 2010-06-16 | 南京大学 | Floating type TiO2/floating bead composite photochemical catalyst and preparation method and application thereof |
| CN102531497A (en) * | 2012-01-04 | 2012-07-04 | 河海大学 | Autoclaved aerated concrete (AAC) of nitrogen-doped titanium dioxide and preparation method thereof |
| CN104150823A (en) * | 2014-07-25 | 2014-11-19 | 长沙理工大学 | Preparation method of blended cement concrete capable of degrading NOx |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106747105A (en) * | 2016-12-31 | 2017-05-31 | 武汉理工大学 | A kind of photo catalytic cement mortar and preparation method thereof |
| CN107673647A (en) * | 2017-10-12 | 2018-02-09 | 王玉红 | Ripple additive and preparation method thereof is inhaled in a kind of cement base dedusting |
| CN108033719A (en) * | 2017-11-23 | 2018-05-15 | 四川建筑职业技术学院 | A kind of efficient multi-purpose photocatalysis concrete and preparation method thereof |
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