CN103273075A - HPAA nano-iron particle dispersing method - Google Patents
HPAA nano-iron particle dispersing method Download PDFInfo
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- CN103273075A CN103273075A CN2013101706883A CN201310170688A CN103273075A CN 103273075 A CN103273075 A CN 103273075A CN 2013101706883 A CN2013101706883 A CN 2013101706883A CN 201310170688 A CN201310170688 A CN 201310170688A CN 103273075 A CN103273075 A CN 103273075A
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Abstract
The invention discloses an HPAA nano-iron particle dispersing method and relates to an iron particle dispersing method. The nano-iron particle material prepared with the method belongs to nomo-metal materials prepared with the chemical method. According to the HPAA nano-iron particle dispersing method, soluble ferrous iron or trivalent iron is dissolved in distilled water (or mixed liquor of distilled water and ethyl alcohol) in a salting-in mode by adding of a certain dispersing agent and with the liquid phase chemical reduction method to form ferric salt solution, iron ions are then directly reduced to zero-valent iron by means of a reducing agent with a strong reducing property such as hydroboron, the product obtained in this way is treated with vacuum drying after being filtered and washed, and then a nano-iron powder material with good dispersing performance and a nanometer microstructure is obtained. The nano-iron particle prepared with the method is spherical, small in diameter, small in particle size range and oxidation resistant. The method is simple and easy to realize, the whole technological process is easy to control, the method can be carried out at normal temperatures and pressures, the problem of agglomeration of nano-iron is solved, and actual production requirements are met.
Description
Technical field
The present invention relates to a kind of nano iron particles preparation method, particularly relate to a kind of method of HPAA dispersing nanometer iron particle.
Background technology
Usually particle size is called nano material at powder or the material of 1～100 nanometer (nm) scope.Nano material all has a wide range of applications in every field because of its unique character.Nanometer iron is because of its transitional region between the elementide of the conventional fine powder of macroscopic view and microcosmic, so present some unique character, one of them important characteristic is exactly skin effect.Because particle diameter is little, specific area is big, and surface-active is strong, and nanometer iron has in the pollutant reparation than common iron powder special advantages more.The external a lot of nanometer iron that studies show that can reduce many pollutants in the removal water, as dissolving, property organic chloride, PCBs and nitrobenzene compounds etc.
Because nanometer abrasive grit footpath is little, active strong, therefore easily coalescent, easy oxidation often is that existing usefulness is now made, all must starvation in preparation and when using, use inconvenient, the cost height, therefore, be restricted in actual applications, preparation method commonly used at present has physics method and chemical method.Certain methods is possible in theory, but the practical operation conditional request is very high, is not easy to accomplish.
Summary of the invention
The object of the present invention is to provide a kind of method of HPAA dispersing nanometer iron particle, utilize solvent directly in the liquid reduction process, to add dispersant, effectively stop the reunion of nano iron particles, directly add dispersant in the liquid reduction process, this nanometer iron powder end particle diameter can solve the agglomeration traits that produces in nanometer iron production process below 100nm, make the nanometer abrasive grit footpath of producing little, be uniformly dispersed, particle size range is narrow, has the favorable actual application effect.
The objective of the invention is to be achieved through the following technical solutions:
A kind of method of HPAA dispersing nanometer iron particle, described method comprises following process:
(1) be raw material with solubility ferrous iron or trivalent iron salt, with distilled water or distilled water and alcohol mixed solution, its volume ratio is 7:3, configuration solution, and making wherein, iron concentration reaches 0.2-2mol/L;
(2) in (1), add surfactant, make its concentration reach 0.2-0.4g/L, add complexing agent and make its concentration reach 0.002-0.005g/L;
(3) in (2), add dispersant, make its mass concentration reach 0.05-1%;
(4) the configuration boron hydride aqueous solution, making its concentration is 0.02-0.1mol/L;
(5) gained solution is under the stirring in (3), and to wherein splashing into solution (4), dripping speed is 1-10ml/s, and the course of reaction temperature is room temperature, drips solution (4) to reacting completely;
(6) after (5) process finished, the gained product was carried out suction filtration, and repeatedly washs with distilled water and absolute ethyl alcohol;
(7) products therefrom namely obtains black and disperses nano iron particles through 60 ℃ of vacuum drying 10-24h.
The method of described a kind of HPAA dispersing nanometer iron particle, described divalent iron salt is frerrous chloride, described trivalent iron salt is ferric sulfate or iron chloride.
The method of described a kind of HPAA dispersing nanometer iron particle, described surfactant is soluble starch.
The method of described a kind of HPAA dispersing nanometer iron particle, described complexing agent is citric acid.
The method of described a kind of HPAA dispersing nanometer iron particle, described dispersant are HPAA(2-hydroxyl phosphoryl acetic acid).
The method of described a kind of HPAA dispersing nanometer iron particle, described reducing agent is sodium borohydride or potassium borohydride.
Advantage of the present invention and effect are:
1, He Cheng nano iron particles dispersion of materials is functional, effectively solves the nano iron particles agglomeration traits; And the product purity height, particle diameter is little, and epigranular has certain non-oxidizability;
2, synthetic route is simple, and technical process control easily;
3, carry out the production preparation process under the normal temperature and pressure, meet the production actual needs.
The specific embodiment
The present invention is described in detail below in conjunction with embodiment.
Embodiment 1:
Preparation dispersing nanometer iron particle, preparation process is:
(1) takes by weighing iron chloride, it is dissolved in the distilled water, be made into the solution that iron concentration is 0.8 mol;
(2) in (1), add the surfactant soluble starch in the gained solution, make its concentration reach 0.4 grams per liter, add the complexing agent citric acid, make its concentration reach 0.004 grams per liter;
(3) with HPAA(2-hydroxyl phosphoryl acetic acid) add in (2) gained solution after 100 times of the stoste dilutions, make its mass concentration reach 0.05%.
(4) take by weighing sodium borohydride and be dissolved in the distilled water, be made into the solution that sodium borohydride content is 0.02 mol;
(5) be under the stirring at (3) gained solution, solution (4) splashed into carry out reduction reaction, rate of addition is 5 milliliters/second, and temperature control is at 20 degrees centigrade, until reacting completely in the course of reaction;
(6) after (5) reaction finishes, the solid product suction filtration that reaction is obtained, and with distilled water drip washing product three times, absolute ethyl alcohol drip washing product three times;
(7) with (6) products therefrom in 60 degrees centigrade of vacuum drying 10h, can obtain the finely dispersed nano iron particles of black.
Embodiment 2:
Preparation dispersing nanometer iron particle, preparation process is:
(1) takes by weighing ferric sulfate, it is dissolved in distilled water and absolute ethyl alcohol mixed solution (in the volume ratio=7:3), is made into the solution that iron concentration is 0.2 mol;
(2) in (1), add the surfactant soluble starch in the gained solution, make its concentration reach 0.2 grams per liter, add the complexing agent citric acid, make its concentration reach 0.002 grams per liter;
(3) with HPAA(2-hydroxyl phosphoryl acetic acid) add in (2) gained solution after 100 times of the stoste dilutions, make its content reach the 1:1000(volume ratio);
(4) take by weighing sodium borohydride and be dissolved in the distilled water, be made into the solution that sodium borohydride content is 0.02 mol;
(5) be under the stirring at (3) gained solution, solution (4) splashed into carry out reduction reaction, rate of addition is 5 milliliters/second, and temperature control is at 20 degrees centigrade, until reacting completely in the course of reaction;
(6) after (5) reaction finishes, the solid product suction filtration that reaction is obtained, and with distilled water drip washing product three times, absolute ethyl alcohol drip washing product three times;
(7) with (6) products therefrom in 60 degrees centigrade of vacuum drying 24h, can obtain the finely dispersed nano iron particles of black.
Embodiment 3:
Preparation dispersing nanometer iron particle, preparation process is:
(1) takes by weighing frerrous chloride, it is dissolved in the distilled water, be made into the solution that iron concentration is 1.6 mol;
(2) in (1), add the surfactant soluble starch in the gained solution, make its concentration reach 0.4 grams per liter, add the complexing agent citric acid, make its concentration reach 0.004 grams per liter;
(3) with HPAA(2-hydroxyl phosphoryl acetic acid) add in (2) gained solution after 100 times of the stoste dilutions, make its mass concentration reach 0.05%;
(4) take by weighing potassium borohydride and be dissolved in the distilled water, be made into the solution that potassium borohydride content is 0.02 mol;
(5) be under the stirring at (3) gained solution, solution (4) splashed into carry out reduction reaction, rate of addition is 10 milliliters/second, and temperature control is at 20 degrees centigrade, until reacting completely in the course of reaction;
(6) after (5) reaction finishes, the solid product suction filtration that reaction is obtained, and with distilled water drip washing product three times, absolute ethyl alcohol drip washing product three times;
(7) with (6) products therefrom in 60 degrees centigrade of vacuum drying 24h, can obtain the finely dispersed nano iron particles of black.
Claims (6)
1. the method for a HPAA dispersing nanometer iron particle is characterized in that described method comprises following process:
(1) be raw material with solubility ferrous iron or trivalent iron salt, with distilled water or distilled water and alcohol mixed solution, its volume ratio is 7:3, configuration solution, and making wherein, iron concentration reaches 0.2-2mol/L;
(2) in (1), add surfactant, make its concentration reach 0.2-0.4g/L, add complexing agent and make its concentration reach 0.002-0.005g/L;
(3) in (2), add dispersant, make its mass concentration reach 0.05-1%;
(4) the configuration boron hydride aqueous solution, making its concentration is 0.02-0.1mol/L;
(5) gained solution is under the stirring in (3), and to wherein splashing into solution (4), dripping speed is 1-10ml/s, and the course of reaction temperature is room temperature, drips solution (4) to reacting completely;
(6) after (5) process finished, the gained product was carried out suction filtration, and repeatedly washs with distilled water and absolute ethyl alcohol;
(7) products therefrom namely obtains black and disperses nano iron particles through 60 ℃ of vacuum drying 10-24h.
2. the method for a kind of HPAA dispersing nanometer iron particle according to claim 1 is characterized in that, described divalent iron salt is frerrous chloride, and described trivalent iron salt is ferric sulfate or iron chloride.
3. the method for a kind of HPAA dispersing nanometer iron particle according to claim 1 is characterized in that, described surfactant is soluble starch.
4. the method for a kind of HPAA dispersing nanometer iron particle according to claim 1 is characterized in that, described complexing agent is citric acid.
5. the method for a kind of HPAA dispersing nanometer iron particle according to claim 1 is characterized in that, described dispersant is HPAA(2-hydroxyl phosphoryl acetic acid).
6. the method for a kind of HPAA dispersing nanometer iron particle according to claim 1 is characterized in that, described reducing agent is sodium borohydride or potassium borohydride.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103551590A (en) * | 2013-11-06 | 2014-02-05 | 沈阳化工大学 | Method for preparing dispersed iron nanoparticles from caprolactam type ionic liquid |
| CN103611944A (en) * | 2013-11-26 | 2014-03-05 | 沈阳化工大学 | Preparation method of ClO3- ionic liquid dispersed iron nanoparticles |
| CN103769599A (en) * | 2014-01-06 | 2014-05-07 | 沈阳化工大学 | Disperse nano-iron particle preparing method |
| CN103785849A (en) * | 2014-01-06 | 2014-05-14 | 沈阳化工大学 | Preparation method of TH-908 dispersed iron nano-particles |
| CN104999087A (en) * | 2015-06-26 | 2015-10-28 | 沈阳化工大学 | Method for preparing dispersed nano-iron particles by means of SBA-15 |
| CN105081340A (en) * | 2014-05-07 | 2015-11-25 | 沈阳农业大学 | Dispersed nano iron particle and preparation method thereof |
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2013
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103551590A (en) * | 2013-11-06 | 2014-02-05 | 沈阳化工大学 | Method for preparing dispersed iron nanoparticles from caprolactam type ionic liquid |
| CN103611944A (en) * | 2013-11-26 | 2014-03-05 | 沈阳化工大学 | Preparation method of ClO3- ionic liquid dispersed iron nanoparticles |
| CN103769599A (en) * | 2014-01-06 | 2014-05-07 | 沈阳化工大学 | Disperse nano-iron particle preparing method |
| CN103785849A (en) * | 2014-01-06 | 2014-05-14 | 沈阳化工大学 | Preparation method of TH-908 dispersed iron nano-particles |
| CN105081340A (en) * | 2014-05-07 | 2015-11-25 | 沈阳农业大学 | Dispersed nano iron particle and preparation method thereof |
| CN104999087A (en) * | 2015-06-26 | 2015-10-28 | 沈阳化工大学 | Method for preparing dispersed nano-iron particles by means of SBA-15 |
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Application publication date: 20130904 |