CN109867307A - A kind of air purifier ZnFe2O4The preparation method of nano particle - Google Patents
A kind of air purifier ZnFe2O4The preparation method of nano particle Download PDFInfo
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- CN109867307A CN109867307A CN201711257199.6A CN201711257199A CN109867307A CN 109867307 A CN109867307 A CN 109867307A CN 201711257199 A CN201711257199 A CN 201711257199A CN 109867307 A CN109867307 A CN 109867307A
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Abstract
The invention discloses a kind of air purifier ZnFe2O4The preparation method of nano particle prepares Fe (OH) first3The hydrosol；Neopelex (ABS) solution is added, makes colloidal sol coagulation, washing, drying obtain the FeOOH nanoparticle of dispersion；ZnO layer, annealing are deposited on the surface of FeOOH；Then processing removes extra ZnO in alkaline solution, finally obtains pure ZnFe2O powder.Preparation ZnFe provided by the invention2O4The method of nano particle is simple to operation, has actual feasibility and prospects for commercial application, and the ZnFe prepared2O4Nano particle is at low cost, pollution-free.
Description
Technical field
The invention belongs to technical field of material, and in particular to a kind of air purifier ZnFe2O4The system of nano particle
Preparation Method.
Background technique
With becoming increasingly conspicuous for environmental problem, how to keep good air quality is the sternness that 21 century human society faces
Challenge.The development of nanosecond science and technology is that people develop efficient, energy conservation and the environmental-friendly material prevented and remedied pollution and technology open
New approach.Material of the environment nanotechnology using nanoscale and the substance with nanostructure (such as nanometer layer and nanotube)
The technology for carrying out environment pollution control and reparation, as across multiple subjects (chemistry, physics and biology, while being related to the earth
Science and engineering field) a kind of technology in recent years by attention.It is dropped from environmental angle development and utilization solar energy chemical reaction
It is the benign object of environment such as CO that solution environment harmful organic substance, which is allowed to mineralising,2And H2O is ideal environmental protection technology.
In recent years, iron oxide-semiconductor Fe2O3, FeOOH and ZnFe2O4Due to it is cheap, nontoxic and have high photocatalysis
Activity becomes research hotspot in terms of various pollutants of degrading, compared with TiO2The major defect of catalysis material is vulnerable to light
Cathodic corrosion, i.e. iron mineral, which can be partly dissolved, enters solution with Fe (II), therefore is not so good as TiO2Stability is good, photo-quantum efficiency
Compare TiO2It is low.But since its energy band band gap (generally 2.2eV or so) compares TiO2Band gap (3.2 eV) is narrow, the wavelength of photoresponse
(560 nm of maximum excitation wavelength) is compared with TiO2The area UV absorbing wavelength (380 nm) it is long, therefore the utilization rate of solar energy is increased.
As also can be carried out a degree of catalytic action in the underground water of pollution even under non-illuminated conditions.In addition, iron is nothing on the earth
Machine circle and the common important and generally existing abundant element of bios, (hydrogen) oxide is most common mine in soil and water body
Object has good Environmental compatibility.Iron ion and its solid-state (hydrogen) oxide can participate in homogeneous, multiphase even microorganism catalysis
Three kinds of catalytic action.Therefore, anti-to the photochemical catalytic oxidation of (hydrogen) oxide mineral of the iron in environment from environmental mineralogy angle
It is very significant that the photolysis for coping with harmful organic substance, which carries out further investigation,.
At present for ZnFe2O4Research application master is mainly hydrolyzed with photoelectrocatalysis, its related photocatalytic activity is then reported then
It is relatively fewer.And for ZnFe2O4The photocatalytic activity of powder, domestic few documents carried out detailed report.Therefore mesh
It is preceding about ZnFe2O4The photocatalysis performance of powder, which is one, is worth the research direction inquired into and had great potential.
Summary of the invention
In order to widen air purifier photoactivation Material Field, zinc ferrous acid light catalytic performance, the present invention are further studied
Propose a kind of air purifier ZnFe2O4The preparation method of nano particle.
The preparation method is as follows:
(1) Fe (OH) is prepared first3The hydrosol；
(2) neopelex (ABS) solution is added, makes colloidal sol coagulation, washing, drying obtain the FeOOH nanometer of dispersion
Particle；
(3) ZnO layer, annealing are deposited on the surface of FeOOH；
(4) then processing removes extra ZnO in alkaline solution, obtains pure ZnFe2O powder.
Preferably, the technological parameter in described (1) are as follows:
It prepares Fe (OH)3The technological parameter of the hydrosol: by FeCl3/Fe2(SO4)350ml deionized water is dissolved in by certain mol proportion
In, Fe+Concentration be 0.5 ~ 1molL-1；1molL is added dropwise dropwise-1NaOH solution, and observe the dindar benefit of solution,
Until obtaining the transparent Fe of bronzing (OH)3The hydrosol.
Preferably, the technological parameter in described (2) are as follows:
Prepare the technological parameter of the FeOOH nanoparticle of dispersion: configured Fe (OH) in (1)3It is added in the hydrosol
0.5mol·L-1Neopelex (ABS) solution, make colloidal sol coagulation.After washing precipitating, 30d is placed.Then, 50
It is dry under~200 DEG C of nitrogen environments, finely dispersed FeOOH nanoparticle can be obtained
Preferably, the technological parameter in described (3) are as follows:
In the technological parameter of the surface of FeOOH deposition ZnO layer: FeOOH powder obtained in (2) is placed in 0.1molL-1Two
30min is impregnated in ethyl zinc solution；It repeats soaking process 5 times, ZnO layer is deposited on to the surface of FeOOH.After finally impregnating
FeOOH/ ZnO powder be put into Muffle furnace, anneal 3 hours at 520 DEG C.
Preferably, the technological parameter in described (4) are as follows:
Purify ZnFe2O4The technological parameter of powder: by calcined powder in (3) in 0.05molL-1It is impregnated in KOH solution
Processing 5 minutes, to remove extra ZnO, finally obtains pure ZnFe2O4Powder.
The beneficial effect comprise that
(1) present invention ZnFe obtained2O4Nano particle is as photochemical catalyst, responding to visible light and photocatalysis performance is good；
(2) preparation method provided by the invention is simple to operation, has actual feasibility, and the ZnFe prepared2O4Nanometer
Grain is at low cost, pollution-free.
Detailed description of the invention
Fig. 1 is ZnFe of the invention2O4The scanning electron microscope (SEM) photograph of nano particle.
Specific embodiment
The following examples can make those skilled in the art that the present invention be more completely understood, but not limit in any way
The present invention.
Embodiment 1
By FeCl3/Fe2(SO4)31:1 is dissolved in 50ml deionized water in molar ratio, Fe+Concentration be 0.5molL-1；Dropwise
1molL is added dropwise-1NaOH solution, and the dindar benefit of solution is observed, until obtaining the transparent Fe of bronzing (OH)3It is water-soluble
Glue.
At configured Fe (OH)30.5molL is added in the hydrosol-1Neopelex (ABS) solution, make
Colloidal sol coagulation.After washing precipitating, 30d is placed.Then, dry under 50 DEG C of nitrogen environments, finely dispersed FeOOH can be obtained and received
Rice corpuscles
FeOOH powder obtained is placed in 0.1molL-130min is impregnated in diethyl zinc solution；It repeats soaking process 5 times,
ZnO layer is deposited on to the surface of FeOOH.Finally the FeOOH/ ZnO powder after immersion is put into Muffle furnace, at 520 DEG C
Annealing 3 hours.
By calcined powder in 0.05molL-1Immersion treatment 5 minutes in KOH solution, to remove extra ZnO,
Finally obtain pure ZnFe2O4Powder.
Embodiment 2
By FeCl3/Fe2(SO4)31:2 is dissolved in 50ml deionized water in molar ratio, Fe+Concentration be 0.5molL-1；Dropwise
1molL is added dropwise-1NaOH solution, and the dindar benefit of solution is observed, until obtaining the transparent Fe of bronzing (OH)3It is water-soluble
Glue.
At configured Fe (OH)30.5molL is added in the hydrosol-1Neopelex (ABS) solution, make
Colloidal sol coagulation.After washing precipitating, 30d is placed.Then, dry under 200 DEG C of nitrogen environments, finely dispersed FeOOH can be obtained
Nanoparticle
FeOOH powder obtained in (2) is placed in 0.1molL-130min is impregnated in diethyl zinc solution；Repeat soaking process
5 times, ZnO layer is deposited on to the surface of FeOOH.Finally the FeOOH/ ZnO powder after immersion is put into Muffle furnace, 520
It anneals 3 hours at DEG C.
By calcined powder in 0.05molL-1Immersion treatment 5 minutes in KOH solution, to remove extra ZnO,
Finally obtain pure ZnFe2O4Powder.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and
Made any modifications, equivalent replacements and improvements within principle, should all fall within the scope and spirit of the invention.
Claims (6)
1. a kind of air purifier ZnFe2O4The preparation method of nano particle, which is characterized in that prepare Fe (OH) first3It is water-soluble
Glue；Neopelex (ABS) solution is added, makes colloidal sol coagulation, washing, drying obtain the FeOOH nanoparticle of dispersion；
ZnO layer, annealing are deposited on the surface of FeOOH；Then processing removes extra ZnO in alkaline solution, finally obtains pure
ZnFe2O powder.
2. air purifier ZnFe according to claim 12O4The preparation method of nano particle, which is characterized in that preparation
Fe(OH)3The technological parameter of the hydrosol: by FeCl3/Fe2(SO4)3It is dissolved in 50ml deionized water by certain mol proportion, Fe+It is dense
Degree is 0.5 ~ 1molL-1；1molL is added dropwise dropwise-1NaOH solution, and the dindar benefit of solution is observed, until obtaining
The transparent Fe of bronzing (OH)3The hydrosol.
3. air purifier ZnFe according to claim 12O4The preparation method of nano particle, which is characterized in that preparation
The technological parameter of the FeOOH nanoparticle of dispersion: at configured Fe (OH)30.5molL is added in the hydrosol-1Dodecane
Base benzene sulfonic acid sodium salt (ABS) solution, makes colloidal sol coagulation.After washing precipitating, 30d is placed.Then, under 50~200 DEG C of nitrogen environments
It is dry, finely dispersed FeOOH nanoparticle can be obtained
4. air purifier ZnFe according to claim 12O4The preparation method of nano particle, which is characterized in that
The technological parameter of the surface deposition ZnO layer of FeOOH: FeOOH powder obtained is placed in 0.1molL-1In diethyl zinc solution
Impregnate 30min；It repeats soaking process 5 times, ZnO layer is deposited on to the surface of FeOOH.Finally by the FeOOH/ ZnO after immersion
Powder is put into Muffle furnace, is annealed 3 hours at 520 DEG C.
5. air purifier ZnFe according to claim 12O4The preparation method of nano particle, which is characterized in that purifying
ZnFe2O4The technological parameter of powder: by calcined powder in 0.05molL-1Immersion treatment 5 minutes in KOH solution, with
Extra ZnO is removed, pure ZnFe is finally obtained2O4Powder.
6. air purifier ZnFe according to claim 12O4The preparation method of nano particle, which is characterized in that described
FeCl3/Fe2(SO4)3Molar ratio be 1:1 to 1:2.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114921806A (en) * | 2022-05-16 | 2022-08-19 | 中国科学技术大学 | Zinc ferrite photoanode with ultralow water oxidation photocurrent initial potential, preparation method and application |
| CN114921806B (en) * | 2022-05-16 | 2024-05-31 | 中国科学技术大学 | Zinc ferrite photo-anode with ultralow water oxidation photocurrent initial potential, preparation method and application |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103740365A (en) * | 2014-01-14 | 2014-04-23 | 重庆三峡学院 | FeOOH-ZnFe2O4 mixed magnetic fluid and preparation method thereof |
-
2017
- 2017-12-04 CN CN201711257199.6A patent/CN109867307A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103740365A (en) * | 2014-01-14 | 2014-04-23 | 重庆三峡学院 | FeOOH-ZnFe2O4 mixed magnetic fluid and preparation method thereof |
Non-Patent Citations (2)
| Title |
|---|
| JU HYN KIM ET AL.: "Awakening solar water-splitting activity of ZnFe2O4 nanorods by hybrid microwave annealing", 《ADVANCED ENERGY MATERIALS》 * |
| 刘天晴等: "FeOOH明胶复合纳米粒子的制备与表征", 《化学学报》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114921806A (en) * | 2022-05-16 | 2022-08-19 | 中国科学技术大学 | Zinc ferrite photoanode with ultralow water oxidation photocurrent initial potential, preparation method and application |
| CN114921806B (en) * | 2022-05-16 | 2024-05-31 | 中国科学技术大学 | Zinc ferrite photo-anode with ultralow water oxidation photocurrent initial potential, preparation method and application |
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