CN102671663A - Modified titanium dioxide/bamboo charcoal composite material, preparation method thereof and method for preparing cigarette filter by adopting material - Google Patents
Modified titanium dioxide/bamboo charcoal composite material, preparation method thereof and method for preparing cigarette filter by adopting material Download PDFInfo
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- CN102671663A CN102671663A CN2012101530735A CN201210153073A CN102671663A CN 102671663 A CN102671663 A CN 102671663A CN 2012101530735 A CN2012101530735 A CN 2012101530735A CN 201210153073 A CN201210153073 A CN 201210153073A CN 102671663 A CN102671663 A CN 102671663A
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Abstract
The invention relates to a modified titanium dioxide/bamboo charcoal composite material, a preparation method thereof, and a method for preparing a cigarette filter by adopting the material. Stable modified TiO2 sol is prepared by adopting a Sol-gel method; through conducting ultrasonic treatment, titanium dioxide particles are enabled to enter into holes at the inner part of bamboo charcoal; and after the bamboo charcoal is roasted, nanoscale titanium dioxide which has photocatalytic activity and is loaded on the bamboo charcoal is prepared. The manufactured composite material is fixedly arranged on the surface of a substrate by using double faced adhesive tape; waste pas produced after a cigarette is burned for multiple seconds is tested by using a gas chromatograph; and through controlling the amount of catalysts, the content of the produced waste gas can be reduced by 50-90 percent, so the aim of not only reducing the harm of the cigarette according to actual requirements but also keeping the taste of the cigarette is achieved.
Description
Technical field
The present invention relates to cigarette filter and use catalyst, relate to a kind of modifying titanium dioxide/bamboo charcoal composite and preparation method and adopt the method for this material preparation cigarette filter.Modifying titanium dioxide/bamboo charcoal composite has good photocatalytic activity with degraded azo type organic under sunshine, make much cleaner, the more environmental protection of people's smoking.
Background technology
Smoking is big bad habit that are detrimental to health, and smoking cessation is unlikely concerning most smokers, and cigarette industry keeps reforming for this reason, like the birth of cigarette with filter tip.Research shows, smoking endangers not only that self is healthy but also the harm surrounding population is healthy.Tar in the flue gas, azo type organic etc. are quite big to human harm, and the whole world is annual because the loss that smoking causes is first up to many trillion.
Chinese invention patent---application number is 201010602751.2 to relate to " a kind of cigarette filter is with the preparation method of nanocatalyst ".This patent is mixed nano titanium oxide, iron with copper, cobalt or zinc; Then mixture is added and obtain mixture aqueous solution in the entry; In mixture aqueous solution, add surfactant and polyacrylic binder again; Under 90 ° of C, stir and obtain the used for filter tip nanocatalyst, then catalyst evenly is sprayed in the filter-tip fiber, this kind filter tip can effectively reduce the harm that cigarette is brought health.But have following several problem with the catalyst that this method makes: 1., nano titanium oxide and various material are added in the entry, nano material is prone to reunite in liquid phase, and the optically catalytic TiO 2 activity after reuniting reduces greatly; 2., not providing degraded, which kind of light source what select for use be, unadulterated titanium dioxide ultraviolet light only capable of using can't utilize the visible light degraded, conditional request is harsh; 3., do not point out to degrade crystal formation with titanium dioxide.Optically catalytic TiO 2 degrading activity that it is generally acknowledged different crystal forms in the world is following: Detitanium-ore-type>rutile-type>brookite type.
Summary of the invention
The technical problem that solves
Weak point for fear of prior art; The present invention proposes the preparation method of a kind of modifying titanium dioxide/bamboo charcoal composite and adopts the method for this material preparation cigarette filter; Utilize composite photo-catalyst absorption and degradation of contaminant can reduce the influence of smoking to health of people; The cigarette filter that utilizes the method to make has health, health, advantages such as environmental protection.
Technical scheme
A kind of modifying titanium dioxide/bamboo charcoal composite; It is characterized in that the raw material composition is: 1 part of butyl titanate, 0.1～0.2 part of iron nitrate solution, 0.1～0.2 part of ammonium sulfate, 0.5 part of glacial acetic acid that concentration is 0.21mol/L that concentration is 0.21mol/L; Activation bamboo charcoal and 0.1 part of urea that concentration is 0.1mol/L, said umber is a parts by volume.
A kind of method for preparing the described modifying titanium dioxide of claim 1/bamboo charcoal composite is characterized in that step is following:
Step 1: roasting 2h under 100～200 ° of C oxygen-free environments obtains the activation bamboo charcoal with bamboo charcoal;
Step 2: stir in the parts by volume proportioning adding container with 1 part butyl titanate, 3～4 parts of absolute ethyl alcohols, process A solution; The parts by volume proportioning of the ammonium sulfate that the iron nitrate solution that is 0.21mol/L with 0.1～0.2 part of concentration again, 0.1～0.2 part of concentration are 0.21mol/L, 1～2 part of absolute ethyl alcohol, 0.5 part of glacial acetic acid adds in the container and stirs, and processes B solution;
Step 3: B solution is added in the A liquid, and the limit edged stirs, and is added dropwise to complete continued and stirs to form colloidal sol, with colloidal sol ageing 24h;
Step 4: the activation bamboo charcoal of step 1 preparation is put in the ageing colloidal sol that step 3 makes; The urea that to add 0.1 part of concentration again be 0.1mol/L; Be that the ultrasonic 2h that handles down of 45KHz makes colloidal sol get into the bamboo charcoal internal void at the 320C lower frequency after stirring, take out bamboo charcoal drying under 80 ° of C afterwards; Said activation bamboo charcoal addition is being as the criterion by the colloidal sol submergence;
Step 5: from the drying box of step 4, take out bamboo charcoal in tube furnace under the nitrogen atmosphere under 550 ° of C roasting 5h obtain modification TiO
2/ bamboo charcoal composite.
Rate of addition when B liquid adds A liquid in the said step 3 is 1/s.
A kind of cigarette filter that adopts said modifying titanium dioxide/bamboo charcoal Composite Preparation is characterized in that: two outer field acetate fiber intermediate courses of cigarette filter hierarchical structure are modification TiO
2/ bamboo charcoal composite material granular.
A kind of method for preparing said cigarette filter is characterized in that: modifying titanium dioxide/bamboo charcoal composite is crushed into graininess, utilizes tobacco curing equipment to roll according to the structure of claim 4.
Beneficial effect
The preparation method of a kind of modifying titanium dioxide/bamboo charcoal composite that the present invention proposes and adopt the method for this material preparation cigarette filter adopts the Sol-gel method to prepare stable modification TiO
2Colloidal sol through ultrasonic Treatment, makes TiO 2 particles can get into the bamboo charcoal internal void, has photocatalytic activity, loads on the Nano titanium dioxide on the bamboo charcoal through preparation after the roasting.The composite of processing is fixed on substrate surface with double faced adhesive tape; Use the waste gas of gas chromatograph cigarettes tested burning after tens of seconds; Amount through the control catalyst; Can make the waste gas content of generation reduce by 50～90%, reach and to reduce the purpose that cigarette harm keeps the cigarette taste again according to actual needs.
The prepared modifying titanium dioxide composite of patent of the present invention has the ability of efficient degradation pollutant, and modified nano-titanium dioxide (Detitanium-ore-type) loads on and is difficult on the bamboo charcoal reuniting, and composite just has fine degradation capability under sunshine.Experiment shows, utilizes solar light irradiation 10h, and 2.5g titanium dioxide/bamboo charcoal composite can be degraded 27.5mg azo type organic fully, measures through UV-2550 type ultraviolet-uisible spectrophotometer, and degradation rate is 98～100%.
Description of drawings
Fig. 1: the flow chart of the inventive method
Fig. 2: the xps energy spectrum analysis result of catalyst; Can know that elements such as Fe, the N entering titanium dioxide that successfully mixes has obtained modifying titanium dioxide.
Fig. 3: modifying titanium dioxide roasting under 550 ° of C obtains the XRD figure of titanium dioxide, can know that the powder crystal formation is that anatase and diffraction maximum are narrow, and intensity is high, shows the particle perfect crystalline.
Fig. 4: the SEM figure and the coherent element content of degraded procatalyst;
Fig. 5: SEM figure and coherent element content behind the catalyst degradation three times.
Can be known by Fig. 4 and Fig. 5: catalyst mainly contains elements such as N, Fe, Ti, O, and the atomic percent of Ti is 9.94% before the degraded, and the atomic percent of Ti still reaches 7.09% behind the catalyst degradation three times, shows that TiO 2 particles firmly loads on the bamboo charcoal.
Fig. 6: the cigarette with filter tip hierarchical structure sketch of being invented.
The specific embodiment
Combine embodiment, accompanying drawing that the present invention is further described at present:
1., the step of preparation activation bamboo charcoal embodiment 1:: roasting 2h under 100～200 ° of C oxygen-free environments obtains the activation bamboo charcoal with a certain amount of bamboo charcoal, and is for use; 2., stir in the parts by volume proportioning adding one dried clean container with 1 part butyl titanate, 3 parts of absolute ethyl alcohols; Process A solution; The parts by volume proportioning of the ammonium sulfate that the iron nitrate solution that is 0.21mol/L with 0.1 part of concentration again, 0.1 part of concentration are 0.21mol/L, 1 part of absolute ethyl alcohol, 0.5 part of glacial acetic acid adds one to be done in the clean container and stirs, and processes B solution; 3., B liquid is slowly added in the A liquid, the limit edged stirs, and is added dropwise to complete continued stir about 30min and forms stable sols, and about 24h is for use with the colloidal sol ageing; 4., after the activation bamboo charcoal that 1. step is prepared is put into the ageing colloidal sol that 3. step make; The urea that to add 0.1 part of concentration again be 0.1mol/L; Under the ultrasound condition that 32 ° of C lower frequencies are 45KHz, handle 2h after stirring and make colloidal sol get into the bamboo charcoal internal void, it is dry under 100 ° of C to take out bamboo charcoal afterwards; 5., from step drying box 4., take out bamboo charcoal in tube furnace under the nitrogen atmosphere, roasting 5h promptly gets modification TiO under 550 ° of C
2/ bamboo charcoal catalyst; 6., 5. obtain composite from step it be crushed to appropriate particle size, utilize the modification TiO of tobacco curing equipment such as cigarette machine with certain grain size
2/ bamboo charcoal composite adds in the cigarette holder, through control modification TiO
2The particle diameter of/bamboo charcoal catalyst and addition are controlled the resistance to suction and the elasticity of cigarette holder.
1., the step of preparation activation bamboo charcoal embodiment 2:: roasting 2h under 100～200 ° of C oxygen-free environments obtains the activation bamboo charcoal with a certain amount of bamboo charcoal, and is for use; 2., stir in the parts by volume proportioning adding one dried clean container with 1 part butyl titanate, 3 parts of absolute ethyl alcohols; Process A solution; The parts by volume proportioning of the ammonium sulfate that the iron nitrate solution that is 0.21mol/L with 0.2 part of concentration again, 0.1 part of concentration are 0.21mol/L, 1 part of absolute ethyl alcohol, 0.5 part of glacial acetic acid adds one to be done in the clean container and stirs, and processes B solution; 3., B liquid is slowly added in the A liquid, the limit edged stirs, and is added dropwise to complete continued stir about 30min and forms stable sols, and about 24h is for use with the colloidal sol ageing; 4., after the activation bamboo charcoal that 1. step is prepared is put into the ageing colloidal sol that 3. step make; The urea that to add 0.1 part of concentration again be 0.1mol/L; Under the ultrasound condition that 32 ° of C lower frequencies are 45KHz, handle 2h after stirring and make colloidal sol get into the bamboo charcoal internal void, it is dry under 100 ° of C to take out bamboo charcoal afterwards; 5., from step drying box 4., take out bamboo charcoal in tube furnace under the nitrogen atmosphere under 550 ° of C roasting 5h promptly get modification TiO
2/ bamboo charcoal catalyst; 6., the step of producing cigarette filter: 5. obtain composite from step it is crushed to appropriate particle size, utilize the modification TiO of tobacco curing equipment such as cigarette machine with certain grain size
2/ bamboo charcoal composite adds in the cigarette holder, through control modification TiO
2The particle diameter of/bamboo charcoal catalyst and addition are controlled the resistance to suction and the elasticity of cigarette holder.
1., the step of preparation activation bamboo charcoal embodiment 3:: roasting 2h under 100～200 ° of C oxygen-free environments obtains the activation bamboo charcoal with a certain amount of bamboo charcoal, and is for use; 2., stir in the parts by volume proportioning adding one dried clean container with 1 part butyl titanate, 3 parts of absolute ethyl alcohols; Process A solution; The parts by volume proportioning of the ammonium sulfate that the iron nitrate solution that is 0.21mol/L with 0.1 part of concentration again, 0.2 part of concentration are 0.21mol/L, 1 part of absolute ethyl alcohol, 0.5 part of glacial acetic acid adds one to be done in the clean container and stirs, and processes B solution; 3., B liquid is slowly added in the A liquid, the limit edged stirs, and is added dropwise to complete continued stir about 30min and forms stable sols, and about 24h is for use with the colloidal sol ageing; 4., after the activation bamboo charcoal that 1. step is prepared is put into the ageing colloidal sol that 3. step make; The urea that to add 0.1 part of concentration again be 0.1mol/L; Under the ultrasound condition that 32 ° of C lower frequencies are 45KHz, handle 2h after stirring and make colloidal sol get into the bamboo charcoal internal void, it is dry under 100 ° of C to take out bamboo charcoal afterwards; 5., obtain the step of composite: from step drying box 4., take out bamboo charcoal in tube furnace under the nitrogen atmosphere under 550 ° of C roasting 5h promptly get modification TiO
2/ bamboo charcoal composite; 6., the step of producing cigarette filter: 5. obtain composite from step it is crushed to appropriate particle size, utilize the modification TiO of tobacco curing equipment such as cigarette machine with certain grain size
2/ bamboo charcoal composite adds in the cigarette holder, through control modification TiO
2The particle diameter of/bamboo charcoal catalyst and addition are controlled the resistance to suction and the elasticity of cigarette holder.
1., the step of preparation activation bamboo charcoal embodiment 4:: roasting 2h under 100～200 ° of C oxygen-free environments obtains the activation bamboo charcoal with a certain amount of bamboo charcoal, and is for use; 2., stir in the parts by volume proportioning adding one dried clean container with 1 part butyl titanate, 3 parts of absolute ethyl alcohols; Process A solution; The parts by volume proportioning of the ammonium sulfate that the iron nitrate solution that is 0.21mol/L with 0.2 part of concentration again, 0.2 part of concentration are 0.21mol/L, 1 part of absolute ethyl alcohol, 0.5 part of glacial acetic acid adds one to be done in the clean container and stirs, and processes B solution; 3., B liquid is slowly added in the A liquid, the limit edged stirs, and is added dropwise to complete continued stir about 30min and forms stable sols, and about 24h is for use with the colloidal sol ageing; 4., after the activation bamboo charcoal that 1. step is prepared is put into the ageing colloidal sol that 3. step make; The urea that to add 0.1 part of concentration again be 0.1mol/L; Under the ultrasound condition that 32 ° of C lower frequencies are 45KHz, handle 2h after stirring and make colloidal sol get into the bamboo charcoal internal void, it is dry under 100 ° of C to take out bamboo charcoal afterwards; 5., from step drying box 4., take out bamboo charcoal in tube furnace under the nitrogen atmosphere under 550 ° of C roasting 5h promptly get modification TiO
2/ bamboo charcoal catalyst; 6. produce the step of cigarette filter: 5. obtain composite from step it is crushed to appropriate particle size, utilize the modification TiO of tobacco curing equipment such as cigarette machine with certain grain size
2/ bamboo charcoal catalyst adds in the cigarette holder, through control modification TiO
2The particle diameter of/bamboo charcoal catalyst and addition are controlled the resistance to suction and the elasticity of cigarette holder.
Claims (5)
1. modifying titanium dioxide/bamboo charcoal composite; It is characterized in that the raw material composition is: 1 part butyl titanate, 0.1～0.2 part of iron nitrate solution, 0.1～0.2 part of ammonium sulfate, 0.5 part of glacial acetic acid that concentration is 0.21mol/L that concentration is 0.21mol/L; Activation bamboo charcoal and 0.1 part of urea that concentration is 0.1mol/L, said umber is a parts by volume.
2. method for preparing the described modifying titanium dioxide of claim 1/bamboo charcoal composite is characterized in that step is following:
Step 1: roasting 2h under 100～200 ° of C oxygen-free environments obtains the activation bamboo charcoal with bamboo charcoal;
Step 2: stir in the parts by volume proportioning adding container with 1 part butyl titanate, 3～4 parts of absolute ethyl alcohols, process A solution; The parts by volume proportioning of the ammonium sulfate that the iron nitrate solution that is 0.21mol/L with 0.1～0.2 part of concentration again, 0.1～0.2 part of concentration are 0.21mol/L, 1～2 part of absolute ethyl alcohol, 0.5 part of glacial acetic acid adds in the container and stirs, and processes B solution;
Step 3: B solution is added in the A liquid, and the limit edged stirs, and is added dropwise to complete continued and stirs to form colloidal sol, with colloidal sol ageing 24h;
Step 4: the activation bamboo charcoal of step 1 preparation is put in the ageing colloidal sol that step 3 makes; The urea that to add 0.1 part of concentration again be 0.1mol/L; Be that the ultrasonic 2h that handles down of 45KHz makes colloidal sol get into the bamboo charcoal internal void at 32 ° of C lower frequencies after stirring, take out bamboo charcoal drying under 80 ° of C afterwards; The addition of said activation bamboo charcoal is being as the criterion by the colloidal sol submergence;
Step 5: from the drying box of step 4, take out bamboo charcoal in tube furnace under the nitrogen atmosphere under 550 ° of C roasting 5h obtain modification TiO
2/ bamboo charcoal composite.
3. method according to claim 2 is characterized in that: the rate of addition when B liquid adds A liquid in the said step 3 is 1/s.
4. one kind is adopted the said modifying titanium dioxide of claim 1/prepared cigarette filter of bamboo charcoal composite, it is characterized in that: two outer field acetate fiber intermediate courses of cigarette filter hierarchical structure are modification TiO
2/ bamboo charcoal composite material granular.
5. a method for preparing the said cigarette filter of claim 4 is characterized in that: modifying titanium dioxide/bamboo charcoal composite is crushed into graininess, utilizes tobacco curing equipment to roll according to the structure of claim 4.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103172897A (en) * | 2013-03-11 | 2013-06-26 | 中南林业科技大学 | Preparation method of nano-fiber supported nano-titania mesoporous material |
| CN103285846A (en) * | 2013-06-07 | 2013-09-11 | 西北工业大学 | Modified titanium dioxide/bamboo charcoal composite material and method for decoloring dye wastewater in sunlight |
| CN103447051A (en) * | 2013-08-28 | 2013-12-18 | 西北工业大学 | Fe<3+>/Ag/TiO2/bamboo charcoal composite material and method for manufacturing cigarette filter tips by utilizing same |
| CN103447037A (en) * | 2013-08-28 | 2013-12-18 | 西北工业大学 | Fe<3+>/TiO2/bamboo charcoal composite material and method for preparing cigarette filters by using same |
| CN108854524A (en) * | 2018-07-04 | 2018-11-23 | 安徽省舒城华竹实业有限公司 | A kind of preparation method of the oxidation modification support type bamboo charcoal of adsorbable degradation of formaldehyde |
| CN112075657A (en) * | 2020-08-27 | 2020-12-15 | 重庆中烟工业有限责任公司 | Preparation method and application of tobacco stem extract |
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| CN101837280A (en) * | 2010-05-20 | 2010-09-22 | 张水祥 | Method for modifying bamboo charcoal |
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| JP2005254123A (en) * | 2004-03-11 | 2005-09-22 | Ohbayashi Corp | Porous material equipped with photocatalyst and its manufacturing method |
| CN101837280A (en) * | 2010-05-20 | 2010-09-22 | 张水祥 | Method for modifying bamboo charcoal |
| CN102179168A (en) * | 2011-02-23 | 2011-09-14 | 福建工程学院 | Method for purifying air by nanomaterial-loaded bamboo charcoal |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103172897A (en) * | 2013-03-11 | 2013-06-26 | 中南林业科技大学 | Preparation method of nano-fiber supported nano-titania mesoporous material |
| CN103172897B (en) * | 2013-03-11 | 2014-12-10 | 中南林业科技大学 | Preparation method of nano-fiber supported nano-titania mesoporous material |
| CN103285846A (en) * | 2013-06-07 | 2013-09-11 | 西北工业大学 | Modified titanium dioxide/bamboo charcoal composite material and method for decoloring dye wastewater in sunlight |
| CN103447051A (en) * | 2013-08-28 | 2013-12-18 | 西北工业大学 | Fe<3+>/Ag/TiO2/bamboo charcoal composite material and method for manufacturing cigarette filter tips by utilizing same |
| CN103447037A (en) * | 2013-08-28 | 2013-12-18 | 西北工业大学 | Fe<3+>/TiO2/bamboo charcoal composite material and method for preparing cigarette filters by using same |
| CN108854524A (en) * | 2018-07-04 | 2018-11-23 | 安徽省舒城华竹实业有限公司 | A kind of preparation method of the oxidation modification support type bamboo charcoal of adsorbable degradation of formaldehyde |
| CN112075657A (en) * | 2020-08-27 | 2020-12-15 | 重庆中烟工业有限责任公司 | Preparation method and application of tobacco stem extract |
| CN112075657B (en) * | 2020-08-27 | 2022-09-16 | 重庆中烟工业有限责任公司 | Preparation method and application of tobacco stem extract |
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Application publication date: 20120919 |