CN102578695A - Preparation method of one-dimensional gold nano material for reducing the CO (carbonic oxide) content of the cigarette smoke and application thereof - Google Patents
Preparation method of one-dimensional gold nano material for reducing the CO (carbonic oxide) content of the cigarette smoke and application thereof Download PDFInfo
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- CN102578695A CN102578695A CN2010102045649A CN201010204564A CN102578695A CN 102578695 A CN102578695 A CN 102578695A CN 2010102045649 A CN2010102045649 A CN 2010102045649A CN 201010204564 A CN201010204564 A CN 201010204564A CN 102578695 A CN102578695 A CN 102578695A
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Abstract
The invention relates to a preparation method of an one-dimensional gold nano material for reducing the CO (carbonic oxide) content of the cigarette smoke and application of the one-dimensional gold nano material, the preparation method comprises the following steps: a) dispersing the tobacco mosaic virus (TMV) into deionized water to obtain a suspensoid with the TMV concentration of 0.1-0.3mg/mL; b) putting 10mL suspensoid obtained by step a), 5mL acetic acid solution and 0.5mL chloroauric acid solution together into a reactor, stirring 3-5h under a lucifugal condition; wherein the mass concentration of the acetic acid solution is 5% and the concentration of the chloroauric acid solution is 0.01M; c) adding 1mL hydrazine hydrate solution into the reactor of step b), standing 2h at room temperature; wherein the concentration of the hydrazine hydrate solution is 10<-3>M; and d) performing repeated washing and purifying to the product by a centrifugation method with deionized water to obtain a dark brown floccus product, dispersing the dark brown floccus product into deionized water again, obtaining a suspensoid contained the target product, and then injecting the suspensoid contained the target product into a cigarette filter.
Description
Technical field
The present invention relates to organic and inorganic composite functional material and tobacco harm reduction research field, is a kind of in order to reduce the preparation method and the application thereof of the one dimension gold nano-material of CO content in the cigarette smoke specifically.Utilize the prepared material of the present invention to add in the cigarette filter, under consumption situation seldom, just can effectively reduce the content of CO in the cigarette smoke.
Background technology
Current, smoking and health problem receive the strong interest of the whole society, under this background, carry out the research work of tobacco harm reduction, are of great practical significance.CO is one of main harmful components of cigarette smoke, reduces CO Study on content work in the cigarette smoke, is a very urgent task.Utilize nm of gold at normal temperatures the CO catalytic oxidation in the cigarette smoke to be CO
2Be the means that effectively reduce very much CO content in the cigarette smoke, in this type of research, keep nm of gold height in use evenly to disperse; It is the important prerequisite that obtains better catalytic effect; Seek a kind of suitable mould material for this reason and carry out the growth of nm of gold,, be very important to realize stable position and high-efficient carrier to nanogold particle.
Virus can become desirable template (R.Tsukamoto, M.Muraoka, M.Seki, H.Tabata, the I.Yamashita.Synthesis of CoPt and FePt that constructs new material
3Nanowires Usingthe Central Channel of Tobacco Mosaic Virus as a Biotemplate [J] .Chem.Mater., 2007,19:2389.).Except can be on nanometer and molecular level carrying out the microcosmic assembling to material, virus capsid protein also has the space binding site that rule distributes, can be so that be the material ordering that template is constructed with it, and these all can be to the performance generation active influence of material.TMV is a kind of template that is used to construct low-dimensional materials, and this virus has nano tubular structure, and pipe range is 300nm, and bore is 4nm, and external diameter is 18nm.There is the various active group on the inside and outside surface of TMV, through changing reaction condition, different material is combined on the inside and outside surface of TMV nanotube, thereby obtains having the new material of difference in functionality
The preparation nanocrystalline, line that with TMV is that template is carried out is important application (R.J.Tseng, the C.Tsai of TMV template in field of materials; L.Ma; J.Ouyang, C.S.Ozkan, Y.Yang.Digitalmemory device based on tobacco mosaic virus conjugated withnanoparticles [J] .Nature Nanotechnology; 2006,1:72..M.Knez，M.Sumser，A.M.Bittner，C.Wege，H.Jeske，T.P.Martin，K.Kern.Spatially?selective?nucleation?of?metal?clusters?on?the?tobacco?mosaicvirus[J].Adv.Funct.Mater.，2004，14：116.。E.Dujardin，C.Peet，G.Stubbs，J.N.Culver，S.Mann.Organization?of?metallicnanoparticles?using?tobacco?mosaic?virus?templates [J].Nano?Lett.，2003，3：413.)。At present, realized the growth of multiple noble metal nanocrystalline, line in the TMV nanotube surface.Current research concentrates in the growth based on nanocrystalline, the line of TMV template, and the research that relates to material property is very rare, for the nano material based on the TMV template finds relevant potential application, is the task of top priority of this area research.
Zhengzhou Tobacco Research Institute of CNTC had once been carried out and has been utilized the nano-noble metal material to reduce CO Study on content in the cigarette smoke, and development has obtained being suitable for the catalysis material that contains the nano-noble metal active component, auxiliary agent and the binary catalyst material composite filter (Lv Gongxuan that tobacco industry is used; Nie Cong, Zhao Mingyue, Liu Jianfu; A fourth man of virtue and ability, application contains the nano-noble metal catalysis material and reduces CO technical research [J] in the cigarette smoke, Chinese tobacco journal; 2003,9:18).
Summary of the invention
The object of the invention just for provide a kind of technology comparatively simple, to equipment requirements lower can in order to the preparation method that reduces the one dimension gold nano-material of CO content in the cigarette smoke and.The difference of the present invention and prior art is: on a kind of organic formwork TMV, directly carry out effective growth of gold nanocrystals; With TMV and nanocrystalline between interaction realize stable position and high-efficient carrier to each nano-crystalline granule; Thereby in use keep the height of gold nanocrystals on the TMV template evenly to disperse; Make every effort under the lower situation of material usage, promptly obtain CO removal effect preferably.
Method of the present invention is a mould material with tobacco mosaic virus (TMV) (TMV), through TMV template and the electrostatic interaction that contains the plain group of gold dollar, with the method for chemical deposition, has carried out the growth of nm of gold at the TMV template surface, has realized the compound of TMV and nm of gold.In acid medium, the TMV template has stronger suction-operated to containing the plain anion group of gold dollar, and this suction-operated has higher selectivity, and this makes the TMV template higher and effect is stronger to the load factor of nm of gold.
Method of the present invention may further comprise the steps:
A, tobacco mosaic virus (TMV) TMV is scattered in the deionized water, obtains the suspension that TMV concentration is about 0.1-0.3mg/mL;
B, 10mL step a gained suspension, 5mL acetic acid solution, 0.5mL chlorauric acid solution are together placed reaction vessel, under the lucifuge condition, stir 3-5h; Wherein the mass concentration of acetic acid solution is 5%, and chlorauric acid solution concentration is 0.01M;
C, the hydrazine hydrate solution with 1mL joins in the described reaction vessel of b step again, leaves standstill 2h under the room temperature; Wherein hydrazine hydrate solution concentration is 10
-3M;
D, with centrifugation method product is repeatedly washed, purifies, obtain the cotton-shaped product of dark-brown, this product is scattered in the deionized water once more, obtain containing the suspension of target product with deionized water, subsequent use.
The application process of gained one dimension gold nano-material in cigarette is following among the present invention: adopt the method for injection to inject cigarette filter the resulting suspension that contains target product; Every injection volume is 0.3-0.5mL, afterwards cigarette is positioned over that inner equilibrium got final product more than 2 days between the sample balance.
The present invention has made full use of that the TMV template has one-dimensional nano structure and surface-active is strong and regulatable advantage; Through TMV template and the electrostatic interaction that contains the plain group of gold dollar; With the method for chemical deposition, carried out the growth of nm of gold at the TMV template surface, realized the compound of TMV and nm of gold.In acid medium, the TMV template has stronger suction-operated to containing the plain anion group of gold dollar, and this suction-operated has higher selectivity, and this makes the TMV template higher and effect is stronger to the load factor of nm of gold.Like this, TMV-nm of gold composite is expected under the lower situation of consumption, can effectively remove the CO in the cigarette smoke.
Description of drawings
Accompanying drawing is one dimension gold nano-material transmission electron microscope (TEM) photo based on the TMV template.
The specific embodiment
To combine embodiment to further describe below the present invention:
Embodiment 1
Tobacco mosaic virus (TMV) TMV is scattered in obtains the suspension that concentration is 0.1mg/mL in the deionized water; This suspension of 10mL, 5mL acetic acid solution (5wt%), 0.5mL chlorauric acid solution (0.01M) are together placed reaction vessel; Under the lucifuge condition, stir 3h, add the hydrazine hydrate solution (10-3M) of 1mL again, under the room temperature reactant is left standstill 2h; With deionized water, product is repeatedly washed, finally obtain dark-brown cotton-shaped product with centrifugation method.This product is scattered in the deionized water again, obtains containing the suspension of target product, the suspension that will contain target product with the syringe of 0.1mL is added in the cigarette filter, and every cigarette addition is 0.3mL, and every cigarette contains target product 0.05mg approximately.
Not add the same trade mark cigarette contain target product suspension is control sample, estimates based on the influence to CO content in the cigarette mainstream flue gas of the one dimension gold nano-material of TMV template, and the result is as shown in the table:
The result shows that the resulting target product of the present invention can be reduced to 9.21mg by 10.83mg with CO content in the cigarette mainstream flue gas under the lower situation of addition (0.05mg), reduces 1.62mg, reduction amplitude 14.96%.
Embodiment 2
Tobacco mosaic virus (TMV) TMV is scattered in obtains the suspension that concentration is 0.3mg/mL in the deionized water; This suspension of 10mL, 5mL acetic acid solution (5wt%), 0.5mL chlorauric acid solution (0.01M) are together placed reaction vessel; Under the lucifuge condition, stir 3h, add the hydrazine hydrate solution (10 of 1mL again
-3M), under the room temperature reactant is left standstill 2h, with deionized water, product is repeatedly washed, finally obtain dark-brown cotton-shaped product with centrifugation method.This product is scattered in the deionized water again, obtains containing the suspension of target product, the suspension that will contain target product with the syringe of 0.1mL is added in the cigarette filter, and every cigarette addition is 0.3mL, and every cigarette contains target product 0.11mg approximately.
Not add the same trade mark cigarette contain target product suspension is control sample, estimates based on the influence to CO content in the cigarette mainstream flue gas of the one dimension gold nano-material of TMV template, and the result is as shown in the table:
The result shows that the resulting target product of the present invention can be reduced to 9.06mg by 10.81mg with CO content in the cigarette mainstream flue gas under the lower situation of addition (0.11mg), reduces 1.75mg, reduction amplitude 16.19%.
Embodiment 3
Tobacco mosaic virus (TMV) TMV is scattered in obtains the suspension that concentration is 0.3mg/mL in the deionized water; This suspension of 10mL, 5mL acetic acid solution (5wt%), 0.5mL chlorauric acid solution (0.01M) are together placed reaction vessel; Under the lucifuge condition, stir 5h, add the hydrazine hydrate solution (10 of 1mL again
-3M), under the room temperature reactant is left standstill 2h, with deionized water, product is repeatedly washed, finally obtain dark-brown cotton-shaped product with centrifugation method.This product is scattered in the deionized water again, obtains containing the suspension of target product, the suspension that will contain target product with the syringe of 0.1mL is added in the cigarette filter, and every cigarette addition is 0.3mL, and every cigarette contains target product 0.11mg approximately.
Not add the same trade mark cigarette contain target product suspension is control sample, estimates based on the influence to CO content in the cigarette mainstream flue gas of the one dimension gold nano-material of TMV template, and the result is as shown in the table:
The result shows that the resulting target product of the present invention can be reduced to 9.02mg by 10.77mg with CO content in the cigarette mainstream flue gas under the lower situation of addition (0.11mg), reduces 1.75mg, reduction amplitude 16.25%.
Embodiment 4
Tobacco mosaic virus (TMV) TMV is scattered in obtains the suspension that concentration is 0.3mg/mL in the deionized water; This suspension of 10mL, 5mL acetic acid solution (5wt%), 0.5mL chlorauric acid solution (0.01M) are together placed reaction vessel; Under the lucifuge condition, stir 3h, add the hydrazine hydrate solution (10 of 1mL again
-3M), under the room temperature reactant is left standstill 2h, with deionized water, product is repeatedly washed, finally obtain dark-brown cotton-shaped product with centrifugation method.This product is scattered in the deionized water again, obtains containing the suspension of target product, the suspension that will contain target product with the syringe of 0.1mL is added in the cigarette filter, and every cigarette addition is 0.5mL, and every cigarette contains target product 0.18mg approximately.
Not add the same trade mark cigarette contain target product suspension is control sample, estimates based on the influence to CO content in the cigarette mainstream flue gas of the one dimension gold nano-material of TMV template, and the result is as shown in the table:
The result shows that the resulting target product of the present invention can be reduced to 8.78mg by 10.81mg with CO content in the cigarette mainstream flue gas under the lower situation of addition (0.18mg), reduces 2.03mg, reduction amplitude 18.80%.
Embodiment 5
Tobacco mosaic virus (TMV) TMV is scattered in obtains the suspension that concentration is 0.3mg/mL in the deionized water; This suspension of 10mL, 5mL acetic acid solution (5wt%), 0.5mL chlorauric acid solution (0.01M) are together placed reaction vessel; Under the lucifuge condition, stir 5h, add the hydrazine hydrate solution (10 of 1mL again
-3M), under the room temperature reactant is left standstill 2h, with deionized water, product is repeatedly washed, finally obtain dark-brown cotton-shaped product with centrifugation method.This product is scattered in the deionized water again, obtains containing the suspension of target product, the suspension that will contain target product with the syringe of 0.1mL is added in the cigarette filter, and every cigarette addition is 0.5mL, and every cigarette contains target product 0.18mg approximately.
Not add the same trade mark cigarette contain target product suspension is control sample, estimates based on the influence to CO content in the cigarette mainstream flue gas of the one dimension gold nano-material of TMV template, and the result is as shown in the table:
The result shows that the resulting target product of the present invention can be reduced to 8.79mg by 10.83mg with CO content in the cigarette mainstream flue gas under the lower situation of addition (0.18mg), reduces 2.04mg, reduction amplitude 18.84%.
Claims (2)
1. one kind in order to reduce the preparation method of the one dimension gold nano-material of CO content in the cigarette smoke, and it is characterized in that: said method comprises the steps:
A, tobacco mosaic virus (TMV) TMV is scattered in the deionized water, obtains the suspension that TMV concentration is about 0.1-0.3mg/mL;
B, 10mL step a gained suspension, 5mL acetic acid solution, 0.5mL chlorauric acid solution are together placed reaction vessel, under the lucifuge condition, stir 3-5h; Wherein the mass concentration of acetic acid solution is 5%, and chlorauric acid solution concentration is 0.01M;
C, the hydrazine hydrate solution with 1mL joins in the described reaction vessel of b step again, leaves standstill 2h under the room temperature; Wherein hydrazine hydrate solution concentration is 10
-3M;
D, with centrifugation method product is repeatedly washed, purifies, obtain the cotton-shaped product of dark-brown, this product is scattered in the deionized water once more, obtain containing the suspension of target product with deionized water, subsequent use.
2. the application of the said one dimension gold nano-material of claim 1 in cigarette; It is characterized in that: adopt the method for injection to inject cigarette filter the resulting suspension that contains target product; Every injection volume is 0.3-0.5mL, afterwards cigarette is positioned over that inner equilibrium got final product more than 2 days between the sample balance.
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Cited By (1)
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| CN103706800A (en) * | 2014-01-16 | 2014-04-09 | 国家烟草质量监督检验中心 | Method for growing nanogold on gene-modified tobacco mosaic virus nuclecapsid protein template |
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Application publication date: 20120718 |