CN101519209B - Method for constructing attapulgite nanometer network by utilizing ion beam - Google Patents
Method for constructing attapulgite nanometer network by utilizing ion beam Download PDFInfo
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- CN101519209B CN101519209B CN2009101164544A CN200910116454A CN101519209B CN 101519209 B CN101519209 B CN 101519209B CN 2009101164544 A CN2009101164544 A CN 2009101164544A CN 200910116454 A CN200910116454 A CN 200910116454A CN 101519209 B CN101519209 B CN 101519209B
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Abstract
The invention discloses a method for constructing an attapulgite nanometer network by utilizing an ion beam. The method comprises the following steps: (1) pre-treating an attapulgite sample: adding attapulgite raw soil to pure water and stirring at a high speed to obtain an attapulgite suspension, removing impurities, ultrasonically treating, drying to obtain purified attapulgite powder and addingthe purified attapulgite powder to the pure water to prepare a purified attapulgite suspension, uniformly coating the purified attapulgite suspension on a vessel and drying the purified attapulgite s uspension to obtain a standby attapulgite sample; and (2) ion beam bombing: irradiating the standby attapulgite sample by an ion beam biological engineering device with irradiation parameters: the ionbeam has an energy range of 5keV to 1000keV and a dose range of 20keV to 100000keV. Attapulgite congeries which is originally in bunchy distribution is dispersed into single rod-like crystals so as t o improve the dispersivity of the attapulgite and the adsorbability thereof.
Description
Technical field
The present invention relates to field of nanometer material technology, a kind of specifically method of utilizing the ionic fluid constructing attapulgite nanometer network.
Background technology
Generally believe that the nano material of complex construction such as nanofiber network structure have better performance than linear structure, comprising: mechanical property, rheological, retardancy, adsorptivity, catalytic, nanometer sieve, thermal insulation etc.Thereby, the design of nanometer network and construct and receive increasing concern.Yet existing work concentrates on synthesizing by the organic nano network of numerator self-assembly technique mostly.For using more widely inorganic nano material,, can not in preparation process, reticulate structure as organic nano material by controlling reaction conditions ' self-assembly ' because it usually is wire (or bar-shaped) growth in preparation process.Therefore, exploitation has broad application prospects the post-processing technology that the wire nanostructure is transformed into network nano structure.There is report to say, the wire Single Walled Carbon Nanotube can be united by a seam by the high-temperature effect of the electron beam irradiation of transmission electron microscope generation, yet, to what can generally use wire inorganic nano Structure Conversion is rarely had report as the method for nanometer network structure.
Attapulgite is a kind of natural hydration mineral, has unique three-dimensional crystalline structure, and molecular formula is Si
8O
20Mg
5(A1) (OH)
2(H
2O)
44H
2O.Its elementary cell is that diameter is about 20-50nm, length is about the fibrous excellent brilliant of 1mm.Owing to its nano-scale, excellent crystalline substance has bigger specific surface area, independent existence that can not be stable under state of nature, is the pencil distribution but adsorb the many aggregate ， Yi Bales Bales of formation ground mutually at random.Just because of the brilliant a large amount of gatherings of rod make the specific surface area of attapulgite be significantly less than its theoretical boundary (i.e. all excellent brilliant specific surface area sums).Attapulgite specific surface area without any processing generally is not higher than 150m
2/ g, this is restricted its application in a lot of fields, such as sorbent material, catalyzer, carrier etc.Therefore, the dispersion of attapulgite has received the concern of more and more researchers.At present, method commonly used has physics method and chemical method, and the former mainly comprises mechanical presses, supersound process etc.; The latter is generally acid-alkali treatment.Although these methods can improve the dispersiveness of attapulgite to a certain extent, improve its specific surface area, be difficult to realize significantly improving, promptly be difficult to surpass 200m on the numerical value
2/ g, its reason is that these methods just are dispersed into little aggregate or single rod crystalline substance with excellent brilliant aggregate partly, and can not change the brilliant microtexture of rod.
Report in the patent in the past that attapulgite, chitosan and urea is mixing granulation by a certain percentage, can reach the purpose of control nitrogen loss, invented control mistake urea (ULCF) thus and be widely used in and controlled in the Pollution abatement of lake eutrophication face source (chemical fertilizer).In order to disclose the microtexture that attapulgite in the urea is lost in control, according to ionic fluid organic molecule is had higher sputtering raste, we will control the urea that loses in the urea with ionic fluid and weed out.Ion beam bombardment urea/attapulgite compound can see clearly that ion beam etching has not only been rejected urea, and makes the flexural deformation of inflexible attapulgite clay nano line.The attapulgite that ion beam bombardment is pure, the energy and the dosage of change ionic fluid can be controlled attapulgite by bar-shaped forming process to network structure.This gives us important enlightenment: the ion beam bombardment technology may be the novel method that a kind of inorganic quickly and easily wire nano material is converted to network structure.This method not only is used for the structure of attapulgite material network, is suitable for the networking of other inorganic wire nano materials (for example zinc oxide nanowire) is same.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, a kind of method of utilizing the ionic fluid constructing attapulgite nanometer network is provided, can improve the attapulgite dispersiveness greatly and its club shaped structure is built into network structure.
Technical scheme of the present invention is as follows:
A kind of method of utilizing the ionic fluid constructing attapulgite nanometer network is characterized in that: may further comprise the steps:
(1), attapulgite sample pretreatment: in high-speed stirring, obtain the attapulgite suspension liquid in the attapulgite original soil adding pure water, remove impurity then; Pass through supersound process then, oven dry obtains the attapulgite powder of purifying; The attapulgite powder of purifying is joined in the pure water, be configured to the attapulgite suspension liquid of purifying, be uniformly coated on the vessel, oven dry obtains standby attapulgite sample;
(2), ion beam bombardment: standby attapulgite sample is with ion beam bioengineering device irradiation, and irradiation parameters is arranged: the ion beam energy scope is 5-1000keV, and dosage range is 20-100000keV.
The described method of utilizing the ionic fluid constructing attapulgite nanometer network is characterized in that: its concrete steps are:
(1), attapulgite sample pretreatment: in high-speed stirring, obtain the attapulgite suspension liquid in the attapulgite original soil adding pure water, leave standstill Impurity removal by gravity; Then, attapulgite suspension liquid supersound process 10-30 minute 40-80 ℃ of oven dry, obtains the attapulgite powder of purifying; The attapulgite powder of purifying is joined in the pure water, and configuration concentration is the suspension liquid of 5-20g/L, is uniformly coated on the vessel, 40-80 ℃ of oven dry, obtains standby attapulgite sample;
(2), ion beam bombardment: standby attapulgite sample with ion beam bioengineering device irradiation, concrete parameter is:
(1): when energy is 40keV, dosage 1000keV;
(2): when energy is 30keV, dosage 1500keV;
(3): when energy is 20keV, dosage 2000keV;
(4): when energy is 10keV, dosage 4000keV;
(5): when energy is 5keV, dosage 8000keV.
The described method of utilizing the ionic fluid constructing attapulgite nanometer network is characterized in that: the attapulgite original soil adds in the pure water 6000-12000rpm high-speed stirring 5-30 minute, obtains the attapulgite suspension liquid; The power of supersound process is 100-200W.
The described method of utilizing the ionic fluid constructing attapulgite nanometer network is characterized in that: the attapulgite original soil is by other fibrous nano material, as replacements such as attapulgite, sepiolite, metal-oxide fiber shape nano materials.
The principle of the invention is: attapulgite is the complex construction that the hydrate molecule coordination of Si, Mg oxide compound and Al is formed, and belongs to the poor conductor of heat and electricity.When the ion bombardment attapulgite aggregate of high-energy-density, because heat effect and electrocharge effect, most of aggregate " is rived ", forms many dispersive rod crystalline substances.Owing to the inhomogeneous thermal stresses that produces of being heated along attapulgite rod crystal axial line, cause nano stick crystal flexural deformation, elongation or contractile motion, butt joint or overlap joint mutually.Attapulgite brilliant two ends of rod such as needle-like under the state of nature, ion beam etching makes needle point more and more thinner continuously, so that may occur ' fusion ' phenomenon under the high-energy-density ion beam bombardment.Ion beam bombardment can make the atom in the nano thread structure off normal, and produces vacancy defect.Because attapulgite be electric poor conductor, the coulombic repulsion between two particles is greater than physical strength, may make the impelling of particle fragment and produces bigger defective.When fused nanometer line end docks or fused one end and excellent brilliant vacancy defect overlap joint mutually, the displaced atom of zone of action two lateral movements can mix mutually, has formed " welding zone " of structurally lumping together.This shows that the high-energy-density ion beam bombardment impels rigidity wire attapulgite to produce thermal stresses flexural deformation, most advanced and sophisticated fusion, butt joint or overlap joint in mutual combining together property of crossover region structure, reach the purpose of welding, thereby are transformed into complex network structures mutually.In a word, behind the ion beam bombardment, the attapulgite aggregate that was the pencil distribution originally is dispersed into one rod crystalline substance, and under the local heat effect of ionic fluid, interlinking forms the three-dimensional porous nano network, thereby the dispersiveness of attapulgite is greatly improved.
Beneficial effect of the present invention is:
1, first ion beam technology is used for the attapulgite material modification, this method is stable, convenient, does not need loaded down with trivial details chemical treatment, and can batch processing, has bigger application prospect.
2, behind the ion beam bombardment, the attapulgite aggregate that was the pencil distribution originally is dispersed into one rod crystalline substance, the dispersiveness of attapulgite is increased substantially, thereby improve its adsorptivity.
3, under the local heat effect of ionic fluid, the brilliant flexural deformation of attapulgite rod, interlinking or overlapping forms the three-dimensional porous nano network, thereby improves its catalytic and carrier.
Description of drawings
Accompanying drawing is an equipment synoptic diagram used in the present invention.
Number in the figure: 1, ionic fluid; 2, big target chamber; 3, sample folder; 4, main vacuum system; 5, microenvironment target chamber; 6, cell dish is imported and exported; 7, segregaion valve; 8, rotating disk; 9, aseptic wind inlet.
Embodiment:
Utilize the method for ionic fluid constructing attapulgite nanometer network, it is characterized in that: may further comprise the steps:
1, attapulgite sample pretreatment: the attapulgite original soil adds in the pure water 6000-12000rpm high-speed stirring 5-30 minute, obtains the attapulgite suspension liquid.Leave standstill by several subgravities magazine is removed.Then, attapulgite suspension liquid supersound process obtained the attapulgite powder of purifying 40-80 ℃ of oven dry in 10-30 minute.The attapulgite powder of purifying is joined in the pure water, and configuration concentration is the suspension liquid of 5-20g/L, gets 5-20mL and is uniformly coated on the culture dish, 40-80 ℃ of oven dry, obtains standby attapulgite sample.
2, ion beam bombardment: wide ion beam bioengineering device (IBBF) is by a gas ion source, a vacuum system, a vertical ionic fluid, two target target chambers (big target chamber and little target chamber) and Controlling System formation.This device is mainly used in breeding of biomaterial ionic fluid and modification.Wide ion beam bioengineering device adopts doupigatron, can draw H, He, N and Ar plasma, draws the strong 5mA of stream, beam spot diameter, 16cm, homogeneity 90%.Standby attapulgite sample stands different-energy and the bombardment of dosage ion bundle is handled, and concrete parameter is:
(1): energy is 40keV, dosage 1000keV;
(2): energy is 30keV, dosage 1500keV;
(3): energy is 20keV, dosage 2000keV;
(4): energy is 10keV, dosage 4000keV;
(5): energy is 5keV, dosage 8000keV.
Claims (3)
1. method of utilizing the ionic fluid constructing attapulgite nanometer network is characterized in that: may further comprise the steps:
(1), attapulgite sample pretreatment: the attapulgite original soil adds the pure water high speed and stirs, and obtains the attapulgite suspension liquid, removes impurity then; Pass through supersound process then, oven dry obtains the attapulgite powder of purifying; The attapulgite powder of purifying is joined in the pure water, be mixed with the attapulgite suspension liquid of purifying, be uniformly coated on the vessel, oven dry obtains standby attapulgite sample;
(2), ion beam bombardment: standby attapulgite sample with ion beam bioengineering device irradiation, concrete parameter is:
(1): when energy is 40keV, dosage 1000keV;
(2): when energy is 30keV, dosage 1500keV;
(3): when energy is 20keV, dosage 2000keV;
(4): when energy is 10keV, dosage 4000keV;
(5): when energy is 5keV, dosage 8000keV.
2. the method for utilizing the ionic fluid constructing attapulgite nanometer network according to claim 1, it is characterized in that: described attapulgite sample pretreatment is meant: the attapulgite original soil adds the pure water high speed and stirs, obtain the attapulgite suspension liquid, leave standstill Impurity removal by gravity; Then, attapulgite suspension liquid supersound process 10-30 minute 40-80 ℃ of oven dry, obtains the attapulgite powder of purifying; The attapulgite powder of purifying is joined in the pure water, and compound concentration is the suspension liquid of 5-20g/L, is uniformly coated on the vessel, 40-80 ℃ of oven dry, obtains standby attapulgite sample.
3. the method for utilizing the ionic fluid constructing attapulgite nanometer network according to claim 2 is characterized in that: the attapulgite original soil adds in the pure water 6000-12000rpm high-speed stirring 5-30 minute, obtains the attapulgite suspension liquid; The power of supersound process is 100-200W.
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| CN102498950A (en) * | 2011-12-07 | 2012-06-20 | 苏州硒谷科技有限公司 | Selenium sustained-release edible fungus additive for selenium-rich culturing of edible fungus and preparation method thereof |
| CN103084152B (en) * | 2012-12-20 | 2015-11-18 | 中国科学院合肥物质科学研究院 | A kind of efficient processing method improving attapulgite, diatomite microstructure and absorption property |
| CN103355291A (en) * | 2013-05-10 | 2013-10-23 | 中国科学院合肥物质科学研究院 | Novel efficient method for improving adhesive capability of pesticide |
| CN106904622A (en) * | 2017-04-11 | 2017-06-30 | 安徽省明美矿物化工有限公司 | A kind of method for changing attapulgite structure |
| CN106809844A (en) * | 2017-04-11 | 2017-06-09 | 明光市外泰高分子材料有限公司 | A kind of method for changing attapulgite colloidal property |
| CN107115719A (en) * | 2017-04-27 | 2017-09-01 | 舒尔环保科技（合肥）有限公司 | A kind of environment-friendly composite filter core for air purifier |
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| CN108102749B (en) * | 2017-12-29 | 2020-02-18 | 中国科学院合肥物质科学研究院 | Preparation method of diesel nano combustion improver |
| CN110506737B (en) * | 2019-09-20 | 2021-08-13 | 中国科学院合肥物质科学研究院 | Preparation method of pesticide suspending agent and prepared pesticide suspending agent |
| CN110922279A (en) * | 2019-12-23 | 2020-03-27 | 哈尔滨市农业科学院 | Multifunctional ecological organic liquid fertilizer and preparation method thereof |
| CN113881387B (en) * | 2021-12-08 | 2022-02-18 | 山东永誉橡胶有限公司 | Repair rubber cement for tire curing bladder and preparation and use methods thereof |
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| CN1562865A (en) * | 2004-03-27 | 2005-01-12 | 淮阴工学院 | High pure attapulgite clay and preparation method |
| CN1793242A (en) * | 2005-12-15 | 2006-06-28 | 江南大学 | Process for preparing modified concavo-convex bar soil of cation surface activating agent |
| CN1850743A (en) * | 2006-05-18 | 2006-10-25 | 中国科学院等离子体物理研究所 | Nitrogen fertilizer solidifying method by active soil, flocculant, adsorbent composite material and fertilizer |
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Address after: 181 Gucheng Road, shiyangang Township, Hefei City, Anhui Province Patentee after: INSTITUTE OF PLASMA PHYSICS, CHINESE ACADEMY OF SCIENCES Address before: 230031 Shushan Lake Road, Anhui, China, No. 350, No. Patentee before: INSTITUTE OF PLASMA PHYSICS, CHINESE ACADEMY OF SCIENCES |
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