CN105597778A - Strontium ferrite-loaded nano silver composite material and preparing method thereof - Google Patents
Strontium ferrite-loaded nano silver composite material and preparing method thereof Download PDFInfo
- Publication number
- CN105597778A CN105597778A CN201510787171.8A CN201510787171A CN105597778A CN 105597778 A CN105597778 A CN 105597778A CN 201510787171 A CN201510787171 A CN 201510787171A CN 105597778 A CN105597778 A CN 105597778A
- Authority
- CN
- China
- Prior art keywords
- strontium ferrite
- composite material
- silver
- nano silver
- solution
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Abstract
The invention discloses a strontium ferrite-loaded nano silver composite material and a preparing method thereof. The composite material is formed by compounding a strontium ferrite carrier and nano silver particles, and the surface of strontium ferrite is coated with the nano silver particles by a catalytic reduction technology. The prepared composite material has the diameter of 0.5-3 [mu]m, the diameter of the coated silver particles is 5-30 nm, and the diameter and the coating quantity of the silver nanoparticles can be controlled. Because the strontium ferrite carrier in the composite material belongs to a permanent magnet, the composite material has the advantages of high coercivity, large saturation magnetization intensity, good stability and the like, and is conducive to recovery and recycling of a strontium ferrite-loaded nano silver composite catalyst. The prepared composite catalyst has excellent catalytic performance, is easy to recover and reuse, has the advantage of environmental protection, and can be applied to degradation of organic pollutants of industrial and domestic sewage.
Description
Technical field
The invention belongs to Nano-composite materials technical field, be specifically related to a kind of preparation method of strontium ferrite loaded with nano silver composite material.
Background technology
Because the discharge capacity of industrial wastewater is large, pollutant kind is many, and in waste water, contains the organic matter of a large amount of hard degradations, makes traditional water treatment technology particularly all helpless containing poorly soluble organic waste water to containing a large amount of organic pollutions. In recent years, catalytic oxidation technology especially with semi-conducting material as TiO2For becoming water, the photocatalysis oxidation technique of catalyst pollutes the study hotspot of processing, but it needs the irradiation of ultraviolet light to excite in actual applications, because the ratio of sunshine middle-ultraviolet lamp is only less than 5%, therefore its reaction efficiency has much room for improvement, and equipment needed thereby cost is high. In addition, numerous catalyst for sewage disposal are difficult to reclaim, and to environment, are unfavorable for recycling of catalyst simultaneously, cause the wasting of resources.
The present invention has announced a kind of nano-strontium ferrite loaded with nano silver composite material, this material has good catalytic performance, under non-photocatalysis, get final product the organic matter in effective degradation of sewage, and in carrier, contain promoter elements strontium, effectively improved activity and the stability of catalyst. Meanwhile, strontium ferrite belongs to permanent magnet, has excellent magnetic property, is conducive to effective recovery of catalyst and recycles.
Summary of the invention
The object of the present invention is to provide a kind of strontium ferrite loaded with nano silver composite material and preparation method thereof, catalytic efficiency and recycling performance when improving it as catalyst.
In order to solve above technical problem, the concrete technical scheme that the present invention adopts is as follows:
A preparation method for strontium ferrite loaded with nano silver composite material, is characterized in that comprising the following steps:
Step 1, the silver salt solution of configuration 0.05～1mol/L, to the NaOH solution that adds 0.5～2mol/L in described silver salt solution, produces that to add mass fraction after pitchy precipitation be 10%～15% ammoniacal liquor again, is stirred to precipitation and disappears, and obtains silver ammino solution;
Step 2, getting strontium ferrite powder joins in described silver ammino solution, strontium ferrite and simple substance silver mass ratio are 20～100:1, after ultrasonic processing 1h, adding mass fraction is the organic binder bond ethanolic solution of 1.0%-1.4%, organic binder bond ethanolic solution and silver ammino solution volume ratio are 1:1, obtain solution A after ultrasonic 10-30min;
Step 3, the strong reductant solution of configuration 0.05～0.1mol/L, dropwise joins in described solution A, and strong reductant and silver particles mol ratio are 2 ~ 4:1, under heating condition, stir, and obtain suspension;
Step 4, carries out centrifugal, separating treatment by described suspension, and gained precipitation is respectively washed three times with distilled water, absolute ethyl alcohol, obtains strontium ferrite loaded with nano silver composite material after oven dry.
In described step 1, silver salt is water-soluble silver-colored compound as any one or more mixture in silver nitrate, silver fluoride.
In described step 2, organic binder bond is the mixture of any or the two in PVAC polyvinylalcohol and polyvinylpyrrolidone PVP.
In described step 3, strong reductant is any one or two kinds of mixture in sodium borohydride, hydrazine hydrate.
In described step 3, heating condition is 30 DEG C-60 DEG C, in order to prevent that strontium ferrite composite is adsorbed, stirs as mechanical agitation, and mixing time is 2-4 hour.
In described step 4, bake out temperature is 45 DEG C ~ 80 DEG C.
A kind of strontium ferrite loaded with nano silver composite material, it is characterized in that: described strontium ferrite loaded with nano silver composite material is to be composited by strontium ferrite particle and nano silver particles, nano silver particles is coated on the surface of strontium ferrite, composite particle size is 0.5-3 μ m, and silver particles diameter is 5-30nm.
The present invention has beneficial effect.The present invention is by adopting catalytic reduction method to prepare strontium ferrite loaded with nano silver composite material, this technology of preparing can effectively be controlled diameter, the shape of nano silver particles, and the load capacity of nano silver particles, thereby can Effective Regulation catalyst for catalytic performance and the recovering effect of the organic pollution of degrading waste water. And strontium ferrite supported nano-silver catalyst of the present invention is by producing active oxygen catalytic degradation organic matter, does not need ultraviolet source and thermal source, operating cost is cheap.
Brief description of the drawings
Fig. 1 is the XRD figure of the strontium ferrite loading nano silvery composite catalyst prepared of embodiment 1;
Fig. 2 is the SEM figure of the strontium ferrite loading nano silvery composite catalyst prepared of embodiment 1;
Fig. 3 is the catalysis curve map of the catalytic degradation methyl blue of the strontium ferrite loading nano silvery composite catalyst prepared of embodiment 4.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, technical scheme of the present invention is described in further details.
Embodiment 1
(1) get the liquor argenti nitratis ophthalmicus that 10ml concentration is 0.05mol/L, adding 2ml concentration is 0.5mol/LNaOH solution, produces that to add 1ml mass fraction after pitchy precipitation be 10% ammoniacal liquor again, is stirred to precipitation and disappears, and obtains silver ammino solution;
(2) get 0.3g strontium ferrite and join in described silver ammino solution, after ultrasonic 1h, adding 13ml mass fraction is 1.0% PVP solution, and ultrasonic 10min, obtains solution A; The hydrazine hydrate solution that is 0.05mol/L by 47ml concentration, dropwise joins A solution, mechanical agitation 2h, and reaction, obtains suspension at 30 DEG C;
(3) by described suspension centrifugation, and respectively wash three times with distilled water, absolute ethyl alcohol, 45 DEG C of oven dry, obtain diameter at 2.50 ± 0.5 μ m, and the diameter of silver particles is 10 ± 0.05nm, finely dispersed strontium ferrite supported nano-silver catalyst. As shown in Figure 1, SEM as shown in Figure 2 for the XRD of gained sample.
Embodiment 2
(1) get the liquor argenti nitratis ophthalmicus that 8ml concentration is 1mol/L, adding 1.5ml concentration is 2mol/LNaOH solution, produces that to add 1ml mass fraction after pitchy precipitation be 15% ammoniacal liquor again, is stirred to precipitation and disappears, and obtains silver ammino solution;
(2) get 0.3g strontium ferrite and join in described silver ammino solution, after ultrasonic 1h, adding 10ml mass fraction is 1.4% PVP solution, and ultrasonic 30min, obtains solution A; The hydrazine hydrate solution that is 0.1mol/L by 40ml concentration, dropwise joins A solution, mechanical agitation 2h, and reaction, obtains suspension at 60 DEG C;
(3) by described suspension centrifugation, and respectively wash three times with distilled water, absolute ethyl alcohol, 50 DEG C of oven dry, obtain diameter at 1.50 ± 0.5 μ m, and the diameter of silver particles is 20 ± 0.05nm, finely dispersed strontium ferrite supported nano-silver catalyst.
Embodiment 3
(1) get silver nitrate and the silver fluoride solution that 10ml concentration is 0.75mol/L, adding 1.0ml concentration is 1.0mol/LNaOH solution, produces that to add 1ml mass fraction after pitchy precipitation be 12% ammoniacal liquor again, is stirred to precipitation and disappears, and obtains silver ammino solution;
(2) get 0.4g strontium ferrite and join in described silver ammino solution, after ultrasonic 1h, adding 12ml mass fraction is 1.2% PVP solution, and ultrasonic 20min, obtains solution A; The hydrazine hydrate solution that is 0.075mol/L by 40ml concentration, dropwise joins A solution, mechanical agitation 2h, and reaction, obtains suspension at 45 DEG C;
(3) by described suspension centrifugation, and respectively wash three times with distilled water, absolute ethyl alcohol, 65 DEG C of oven dry, obtain diameter at 2.0 ± 0.5 μ m, and the diameter of silver particles is 15 ± 0.05nm, finely dispersed strontium ferrite supported nano-silver catalyst.
Embodiment 4
(1) get the liquor argenti nitratis ophthalmicus that 10ml concentration is 0.5mol/L, adding 2ml concentration is 1.25mol/LNaOH solution, produces that to add 1ml mass fraction after pitchy precipitation be 12.5% ammoniacal liquor again, is stirred to precipitation and disappears, and obtains silver ammino solution;
(2) get 0.3g strontium ferrite and join in described silver ammino solution, after ultrasonic 1h, adding 10ml mass fraction is 1.4% PVP solution, and ultrasonic 30min, obtains solution A; The hydrazine hydrate solution that is 0.075mol/L by 45ml concentration, dropwise joins A solution, mechanical agitation 4h, and reaction, obtains suspension at 50 DEG C;
(3) by described suspension centrifugation, and respectively wash three times with distilled water, absolute ethyl alcohol, 80 DEG C of oven dry, obtain diameter at 1.50 ± 0.5 μ m, the diameter of silver particles is 5 ± 0.05nm, finely dispersed strontium ferrite supported nano-silver catalyst, the ultraviolet spectra curve of its oxidation catalysis degraded methyl blue as shown in Figure 3.
Claims (7)
1. a preparation method for strontium ferrite loaded with nano silver composite material, is characterized in that comprising the following steps:
Step 1, the silver salt solution of configuration 0.05～1mol/L, to the NaOH solution that adds 0.5～2mol/L in described silver salt solution, produces that to add mass fraction after pitchy precipitation be 10%～15% ammoniacal liquor again, is stirred to precipitation and disappears, and obtains silver ammino solution;
Step 2, getting strontium ferrite powder joins in described silver ammino solution, strontium ferrite and simple substance silver mass ratio are 20～100:1, after ultrasonic processing 1h, adding mass fraction is the organic binder bond ethanolic solution of 1.0%-1.4%, organic binder bond ethanolic solution and silver ammino solution volume ratio are 1:1, obtain solution A after ultrasonic 10-30min;
Step 3, the strong reductant solution of configuration 0.05～0.1mol/L, dropwise joins in described solution A, and strong reductant and silver particles mol ratio are 2 ~ 4:1, under heating condition, stir, and obtain suspension;
Step 4, carries out centrifugal, separating treatment by described suspension, and gained precipitation is respectively washed three times with distilled water, absolute ethyl alcohol, obtains strontium ferrite loaded with nano silver composite material after oven dry.
2. the preparation method of a kind of strontium ferrite loaded with nano silver composite material according to claim 1, is characterized in that: in described step 1, silver salt is water-soluble silver-colored compound as any one or more mixture in silver nitrate, silver fluoride.
3. the preparation method of a kind of strontium ferrite loaded with nano silver composite material according to claim 1, is characterized in that: in described step 2, organic binder bond is the mixture of any or the two in PVAC polyvinylalcohol and polyvinylpyrrolidone PVP.
4. the preparation method of a kind of strontium ferrite loaded with nano silver composite material according to claim 1, is characterized in that: in described step 3, strong reductant is any one or two kinds of mixture in sodium borohydride, hydrazine hydrate.
5. the preparation method of a kind of strontium ferrite loaded with nano silver composite material according to claim 1, it is characterized in that: in described step 3, heating condition is 30 DEG C-60 DEG C, in order to prevent that strontium ferrite composite is adsorbed, stir as mechanical agitation, mixing time is 2-4 hour.
6. the preparation method of a kind of strontium ferrite loaded with nano silver composite material according to claim 1, is characterized in that: in described step 4, bake out temperature is 45 DEG C ~ 80 DEG C.
7. the ferrite loaded with nano silver composite material that utilizes the preparation method of a kind of strontium ferrite loaded with nano silver composite material described in claim 1 to prepare, it is characterized in that: described strontium ferrite loaded with nano silver composite material is to be composited by strontium ferrite particle and nano silver particles, nano silver particles is coated on the surface of strontium ferrite, composite particle size is 0.5-3 μ m, and silver particles diameter is 5-30nm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510787171.8A CN105597778B (en) | 2015-11-17 | 2015-11-17 | A kind of strontium ferrite loading nano silvery composite material and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510787171.8A CN105597778B (en) | 2015-11-17 | 2015-11-17 | A kind of strontium ferrite loading nano silvery composite material and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105597778A true CN105597778A (en) | 2016-05-25 |
| CN105597778B CN105597778B (en) | 2018-06-19 |
Family
ID=55978444
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510787171.8A Expired - Fee Related CN105597778B (en) | 2015-11-17 | 2015-11-17 | A kind of strontium ferrite loading nano silvery composite material and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105597778B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114799160A (en) * | 2021-01-27 | 2022-07-29 | 中国科学院理化技术研究所 | Method for modifying surface of magnetic particle |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1557588A (en) * | 2004-01-13 | 2004-12-29 | 上海大学 | Method for manufacturing nano-silver |
| CN102364616A (en) * | 2011-09-22 | 2012-02-29 | 华南师范大学 | Nanometer composite material Fe3O4@PS@Ag with core-shell structure and preparation method thereof |
| CN102664085A (en) * | 2012-05-22 | 2012-09-12 | 中北大学 | Flower-like Fe2O3/Ag composite particle and preparation method thereof |
| CN103480384A (en) * | 2013-09-18 | 2014-01-01 | 重庆大学 | Preparation method for bismuth vanadate composite photocatalyst loaded with strontium ferrite |
-
2015
- 2015-11-17 CN CN201510787171.8A patent/CN105597778B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1557588A (en) * | 2004-01-13 | 2004-12-29 | 上海大学 | Method for manufacturing nano-silver |
| CN102364616A (en) * | 2011-09-22 | 2012-02-29 | 华南师范大学 | Nanometer composite material Fe3O4@PS@Ag with core-shell structure and preparation method thereof |
| CN102664085A (en) * | 2012-05-22 | 2012-09-12 | 中北大学 | Flower-like Fe2O3/Ag composite particle and preparation method thereof |
| CN103480384A (en) * | 2013-09-18 | 2014-01-01 | 重庆大学 | Preparation method for bismuth vanadate composite photocatalyst loaded with strontium ferrite |
Non-Patent Citations (2)
| Title |
|---|
| ZHENG HE ET AL.: ""Preparation and microwave-absorbing properties of silver-coated strontium ferrite with polyaniline via in situ polymerization"", 《JOURNAL OF ALLOYS AND COMPOUNDS》 * |
| 张昊然等: ""纳米级银颗粒的制备方法"", 《贵金属》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114799160A (en) * | 2021-01-27 | 2022-07-29 | 中国科学院理化技术研究所 | Method for modifying surface of magnetic particle |
| CN114799160B (en) * | 2021-01-27 | 2024-03-26 | 中国科学院理化技术研究所 | Method for modifying surface of magnetic particle |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105597778B (en) | 2018-06-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107442178B (en) | Visible light catalyst Fe3O4Preparation method of @ PDA @ Ag composite microspheres | |
| CN103638979B (en) | A kind of magnetic class zeolite imidazole ester metal-organic framework materials, preparation and for liquid phase condensations catalytic reaction | |
| CN103433060B (en) | Core-shell TiO2/ZnIn2S4 composite photocatalyst and preparation method and application thereof | |
| CN103381363B (en) | Catalysts and its preparation method, the purposes of deozonize and harmful organic substance simultaneously | |
| CN105056985B (en) | g‑C3N4The visible light-responded catalytic membrane of/graphene oxide/Nanoscale Iron | |
| CN106669677A (en) | Preparation method of magnetic iron-based heterogeneous Fenton catalyst taking graphene as carrier and application | |
| CN109225221A (en) | The preparation method of charcoal load Zero-valent Iron catalysis material | |
| CN103599737B (en) | One has carbon shell magnetic Nano material and preparation method | |
| CN105597764A (en) | Preparation method of carbon quantum dot/zinc ferrite composite photocatalytic materials | |
| CN108940335A (en) | It is a kind of based on N doping have core-shell structure can magnetic field recycling iron carbon material advanced oxidation restore method for treating water | |
| CN102145293A (en) | Soft magnetic composite photocatalyst and preparation method thereof | |
| CN103551197B (en) | One has hole cage pore passage structure magnetic metal organic framework material, preparation and for acylation reaction | |
| CN101856628A (en) | Conducting polymer modified magnetic photocatalyst and preparation method thereof | |
| CN110215921B (en) | Preparation method and application of magnetic nano composite catalyst with core-shell structure | |
| CN102258980A (en) | Method for preparing sulfured magnetic chitosan and method for treating waste water containing heavy metals by using sulfured magnetic chitosan | |
| CN102728369A (en) | Preparation method of separating zinc oxide-based photocatalyst by magnetic control | |
| CN103055896A (en) | Magnetic recyclable graphene-based precious metal composite nanosheet catalyst, preparation method and application | |
| CN104148098A (en) | Silver phosphate modified magnetic separation type hollow composite photocatalyst and preparation method thereof | |
| CN104874398A (en) | Preparation method for recyclable titanium dioxide (P25)/graphene/iron oxide ternary photocatalytic material | |
| CN104801308A (en) | NiFe2O4/TiO2/sepiolite composite photocatalyst and preparation method thereof | |
| CN105521764A (en) | Coated magnetic nanocomposite material used for sewage treatment, and preparation method and application thereof | |
| CN103599806B (en) | Photocatalyst used for synthesis of aromatic aldehyde chemical and preparation method thereof | |
| CN106984335B (en) | A kind of CdS/GE/Fe2O3The preparation method of composite photo-catalyst | |
| CN105381802A (en) | Method for preparing dandelion-shaped Fe3O4@ZnO core-shell structure compound on basis of heterogeneous nucleation method and application | |
| CN105597778A (en) | Strontium ferrite-loaded nano silver composite material and preparing method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180619 Termination date: 20181117 |