CN102657228A - Method for in-situ preparing nano-silver compound bactericide - Google Patents
Method for in-situ preparing nano-silver compound bactericide Download PDFInfo
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- CN102657228A CN102657228A CN2012101584773A CN201210158477A CN102657228A CN 102657228 A CN102657228 A CN 102657228A CN 2012101584773 A CN2012101584773 A CN 2012101584773A CN 201210158477 A CN201210158477 A CN 201210158477A CN 102657228 A CN102657228 A CN 102657228A
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Abstract
The invention belongs to the technical field of material chemistry, and particularly relates to a method for in-situ preparing a nano-silver compound bactericide. The method is that a hydroxyapatite nano assembled ball chain with the length of micron order is taken as a carrier, the characteristics of the large surface area and high surface activity of the hydroxyapatite nano assembled ball chain are utilized, silver ions are converted into nano-silver on the hydroxyapatite surface through in-situ reduction reaction, so a hydroxyapatite/silver compound bactericide is prepared. The nano-silver compound bactericide has high chemical stability, good recovery performance, and can effectively kill various bacteria, the bactericidal efficiency is greatly improved because of the larger surface area of the nano-silver compound bactericide, under the premise of realizing the same bactericidal effect, the bactericide usage can be saved by about 30-40% compared with pure nano-silver, and the nano-silver compound bactericide has very strong industrial practicability.
Description
Technical field
The invention belongs to the materials chemistry field, be specifically related to a kind of in-situ preparation method of Nano Silver compound disinfectant.
Background technology
As everyone knows, various life article grow harmful bacterium easily, even produce harmful chemical.Along with growth in the living standard, people are also increasing for the demand of living utensil sterilization treatment, so various bactericide also becomes the new research focus in current antibiotic field.At present, bactericide on the market mainly can be divided into organic bactericide and inorganic fungicide, and organic bactericide mainly exist antibiotic kind single, the human injury is made problems such as bacterium develops immunity to drugs, heat endurance is relatively poor more greatly, easily.And inorganic fungicide is all existing remarkable advantages aspect popularity, safety, persistence and the heat endurance.Nano Silver and composite thereof then are representatives wherein, owing to its outstanding bactericidal properties and avirulence are widely used in every field, and medical and health industry especially.But weak point is that the particle diameter of nano-Ag particles is too little, the performance that influences its bactericidal property so be prone to cause the reunion, and simultaneously, the recovery of nano-Ag particles also is a difficult problem that is faced at present.
In order to address the above problem, people begin to attempt Nano Silver is carried on some specific supports, have prepared a series of Nano Silver compound disinfectants.Wherein, hydroxyapatite has received the increasing concern of researcher because it has plurality of advantages such as the stable and mechanical property of good biocompatibility, physico chemical property is good.At present, existing a lot of about the preparation method of hydroxyapatite/silver composite material, more common have electrodeposition process and an ion-exchange.People such as Lu Xiong (Chinese patent: 200810147664.5) use a kind of pulse electrochemical deposition to prepare the method for hydroxyapatite/nano silver antimicrobial composite coating wherein; With calcium salt, phosphate, silver nitrate and an amount of complexant preparation finite concentration, the electrolyte of pH value; In having the electrolytic cell of three-electrode system, carry out electro-deposition, finally make uniform hydroxylapatite/nano silver antimicrobial composite coating.The leaf sword waits people's (Chinese patent: 200810028762.7) adopt the cathode electrodeposition method clearly; The aqueous solution with calcium ions, dihydrogen phosphate and silver ion; With the titanium sheet as working electrode; Extra electric field carries out potentiostatic electrodeposition, through aqueous slkali thermal treatment, promptly gets silver-colored/hydroxyapatite nano composite then.People such as Liu Rongfang (applied chemistry, 20,6,547-551) in the aqueous solution and nicotinic acid silver plating liquid of calcic phosphorus, prepare silver/carboxy apatite composite coating through double electrodeposition.Zhu Peng broadcasts (Chinese patent: 200810103452.7) hydroxyapatite is joined in the mixed solution of silver nitrate and cerous nitrate carry out hydro-thermal reaction, with Ca
+By Ag
+Prepare argentum-carried hydroxylapatite after the displacement.People such as tension force (Chinese patent: 200810152897.4) with AgNO
3The aqueous solution mixes with hydroxyapatite, under the lucifuge condition, stirs, and carries out ion-exchange reactions, will precipitate the calcining after prepare argentum-carried hydroxylapatite.People such as Li Xuanqi (silicate circular, 27,1,12-15) with hydroxyapatite at AgNO
3Soak in the aqueous solution, after ion exchange, prepare argentum-carried hydroxylapatite.(Chinese patent: the hydroxyapatite coating layer that 201010147634.1) will contain silver ion on base material, is prepared the argentum-carried hydroxylapatite coating through liquid phase plasma spraying to people such as Song Lei.Hydroxyapatite/silver composite material that these methods are prepared, though the problem that solution that can part is directly used Nano Silver and brought, ubiquity complex process; Production equipment and cost of material are high, and complex process is not enough in conjunction with firmness; Problems such as bactericidal effect is undesirable; Be difficult in industry, obtain large-scale application, and reclaim difficulty, do not meet the social desirability of Green Chemistry and low-carbon (LC).
The present invention is directed to the preparation of existing Nano Silver and combination product thereof and use in deficiency, creationaryly proposed simply a kind of and novel nano silver compound disinfectant in-situ preparation method efficiently.This method is conceived to improve the bactericidal property and the service efficiency of Nano Silver, increases substantially the rate of recovery of nano-composite catalyst simultaneously.Because the prepared hydroxyapatite of this method has unique large-specific surface area nano ball chain structure; And in the reduction process of silver ion, be accompanied by little deformation, can efficiently solve owing to the too little reunion that causes of Nano Silver particle diameter, caducous problem so that Nano Silver more firmly is adsorbed on its surface; Improved the bactericidal property of Nano Silver; Simultaneously when reaching identical bactericidal effect, reduce silver-colored usage amount, reduced cost effectively.This method is converted into nano-Ag particles with silver ion in hydroxyapatite surface through the method for in-situ reducing, need not add coupling agent or surface treatment operations, and environmental protection and technology are simple more than conventional method.The prepared hydroxyapatite nano of this method is assembled about 20～40 μ m of ball chain length simultaneously; Diameter is about 1～4 μ m, and the bactericidal nano-silver agent after compound is that nano level pure bactericidal nano-silver agent or other relevant composites are more prone to reclaim compared to particle diameter.
Summary of the invention
The objective of the invention is to propose a kind of in-situ preparation method of Nano Silver compound disinfectant; The acquisition bactericidal property is superior; Nano Silver and a kind of NEW TYPE OF COMPOSITE bactericide as the hydroxyapatite strong bonded of carrier; Solve existing silver and carrier material complicated process of preparation, can not strong bonded, bactericidal effect is undesirable and be difficult to problem such as recovery; Effectively reduce the usage amount of killing the needed silver of Board Lot bacterium simultaneously, improve the service efficiency of bactericide, reduce the use cost of bactericide.
The present invention proposes a kind of in-situ preparation method of Nano Silver compound disinfectant; Its concrete steps are: 1) will be added with the calcium source solution of template and the both sides that phosphoric acid root solution places biological semipermeable membrane; After leaving standstill 10 hours; Biological semipermeable membrane is taken off, and with washing of precipitate, the oven dry back obtains hydroxyapatite nano assembling ball chain powder; 2) with the AgNO after hydroxy apatite powder that obtains and the complexing fully
3Solution mixes, and changes water heating kettle over to behind the adding reductant, and hydro-thermal will precipitate suction filtration, washing after 24 hours, obtain hydroxyapatite/silver-colored compound disinfectant.Concrete preparation condition is: 1) the adding quality of template: 0.5～10% of calcium source and phosphate radical source quality; 2) addition of hydroxyapatite and silver ion: both mol ratios 1: 1～1: 10: 3) employed template is aliphatic alcohols, polyethylene glycols, polyvinyl alcohol, alkylolamides class, alkyl amine, alkylbenzene phenols, carboxylate, phosphate, sulphate, sulfonate or its mixture.4) employed biological semipermeable membrane is eggshell membrane, air bladder, pericystium, casing.5) employed reductant is ascorbic acid, hydrazine hydrate, glucose, trisodium citrate.
The present invention has following advantage:
1, proposes to use the carrier of hydroxyapatite nano assembling ball chain first as Nano Silver.The specific surface area of this hydroxyapatite nano assembling ball chain has reached 105cm
2/ g is superior to most bactericidal nano-silver agent carriers.Effectively raise the bactericidal property of Nano Silver after compound, the bactericidal property of hydroxyapatite/silver-colored compound disinfectant is reaching under the prerequisite of equal bactericidal effect compared to pure Nano Silver, and the bactericide consumption can practice thrift 36%, possesses very strong commercial viability.
2. in the NEW TYPE OF COMPOSITE bactericide of the present invention's preparation; As carrier is the hydroxyapatite nano assembling ball chain that is assembled by low-dimension nano material; The length of this nanometer assembling ball chain is about 20～40 μ m, and diameter is about 1～4 μ m, and mostly the hydroxyapatite of the prepared by other/employed hydroxyapatite carrier of silver-colored compound disinfectant overall dimensions is the nano material of simple structure; Grain size is little, reclaims difficulty; And the NEW TYPE OF COMPOSITE bactericide of the present invention's preparation is than being convenient to recycling more.
3. the employed hydroxy apatite powder of NEW TYPE OF COMPOSITE bactericide and the Nano Silver of the present invention's preparation all have avirulence; The advantage of good physico chemical property and outstanding biocompatibility; Can not pollute for environment; Can not damage human body, this bactericide with superior environment friendly and human safety will more be paid attention to.
4. the NEW TYPE OF COMPOSITE bactericide of the present invention's preparation is converted into nano-Ag particles with silver ion in hydroxyapatite surface through the method through in-situ reducing in preparing process; And little deformation takes place in hydroxyapatite; With nano-Ag particles firm be adsorbed in its surface; Compared to the method for the physical adsorption of routine, silver promotes with the firmness that combines of hydroxyapatite greatly in this compound disinfectant.
Embodiment
Through specific embodiment the present invention is further described below.
Embodiment 1:
Measure 20mL0.1mol/L CaCl
2The aqueous solution, 20mL0.06mol/L KH
2PO
4The aqueous solution adds polyethylene glycol 0.02g respectively, and two kinds of solution are placed the both sides of casing, leaves standstill 10 hours, fully reacts to system, gets the deposition of both sides, obtains hydroxy apatite powder after the washing and drying; With the hydroxy apatite powder 1g that obtains and 3mL complexing 0.15mol/LAgNO completely
3After the mixing, change water heating kettle over to behind the adding ascorbic acid, hydro-thermal will precipitate suction filtration, washing after 24 hours, obtain hydroxyapatite/silver-colored compound disinfectant.
Embodiment 2
Measure 20mL 0.1mol/L CaSO
4The aqueous solution, 20mL 0.06mol/L K
2HPO
4The aqueous solution adds TritonX-1000.02g respectively, and two kinds of solution are placed the both sides of air bladder, leaves standstill 10 hours, fully reacts to system, gets the deposition of both sides, obtains hydroxy apatite powder after the washing and drying; With the hydroxy apatite powder 1g that obtains and 2mL complexing 0.15mol/L AgNO completely
3After the mixing, change water heating kettle over to behind the adding hydrazine hydrate, hydro-thermal will precipitate suction filtration, washing after 24 hours, obtain hydroxyapatite/silver-colored compound disinfectant.
Embodiment 3
Measure 20mL 0.1mol/L CaCl
2The aqueous solution, 20mL 0.06mol/L NaH
2PO
4The aqueous solution adds polyethylene glycol 0.02g respectively, and two kinds of solution are placed the both sides of eggshell membrane, leaves standstill 10 hours, fully reacts to system, gets the deposition of both sides, obtains hydroxy apatite powder after the washing and drying; With the hydroxy apatite powder 1g that obtains and 1mL complexing 0.15mol/LAgNO completely
3After the mixing, change water heating kettle over to behind the adding glucose, hydro-thermal will precipitate suction filtration, washing after 24 hours, obtain hydroxyapatite/silver-colored compound disinfectant.
Embodiment 4
Measure 20mL0.1mol/L CaSO
4The aqueous solution, 20mL0.06mol/L Na
2HPO
4The aqueous solution adds TritonX-1000.02g respectively, and two kinds of solution are placed the both sides of casing, leaves standstill 10 hours, fully reacts to system, gets the deposition of both sides, obtains hydroxy apatite powder after the washing and drying; With the hydroxy apatite powder 1g that obtains and 3mL complexing 0.15mol/L AgNO completely
3After the mixing, change water heating kettle over to behind the adding trisodium citrate, hydro-thermal will precipitate suction filtration, washing after 24 hours, obtain hydroxyapatite/silver-colored compound disinfectant.
Embodiment 5
Measure 20mL0.1mol/L CaCl
2The aqueous solution, 20mL 0.06mol/L K
2HPO
4The aqueous solution adds polyethylene glycol 0.02g respectively, and two kinds of solution are placed the both sides of pericystium, leaves standstill 10 hours, fully reacts to system, gets the deposition of both sides, obtains hydroxy apatite powder after the washing and drying; With the hydroxy apatite powder 1g that obtains and 2mL complexing 0.15mol/L AgNO completely
3After the mixing, change water heating kettle over to behind the adding ascorbic acid, hydro-thermal will precipitate suction filtration, washing after 24 hours, obtain hydroxyapatite/silver-colored compound disinfectant.
Embodiment 6
Measure 20mL0.1mol/L CaSO
4The aqueous solution, 20mL0.06mol/L NaH
2PO
4The aqueous solution adds TritonX-100 0.02g respectively, and two kinds of solution are placed the both sides of eggshell membrane, leaves standstill 10 hours, fully reacts to system, gets the deposition of both sides, obtains hydroxy apatite powder after the washing and drying; With the hydroxy apatite powder 1g that obtains and 1mL complexing 0.15mol/L AgNO completely
3After the mixing, change water heating kettle over to behind the adding hydrazine hydrate, hydro-thermal will precipitate suction filtration, washing after 24 hours, obtain hydroxyapatite/silver-colored compound disinfectant.
Claims (8)
1. the in-situ preparation method of a Nano Silver compound disinfectant; It is characterized in that the Nano Silver compound disinfectant that the present invention designs is the nanosphere chain structure, adopt the in-situ synthesis preparation, concrete preparation process is: 1) will be added with the calcium source solution of template and the both sides that phosphoric acid root solution places biological semipermeable membrane; After leaving standstill 10 hours; Biological semipermeable membrane is taken off, and with washing of precipitate, the oven dry back obtains hydroxyapatite nano-powder; 2) with the AgNO after hydroxy apatite powder that obtains and the complexing fully
3Solution mixes, and changes water heating kettle over to behind the adding reductant, and hydro-thermal will precipitate suction filtration, washing after 24 hours, can obtain hydroxyapatite/silver-colored compound disinfectant.
2. according to claims 1, the adding quality of template is 0.5～10% of calcium source and a phosphate radical source quality.
3. according to claims 1, it is characterized in that employed biological semipermeable membrane is eggshell membrane, air bladder, pericystium, casing.
4. according to claims 1, the mol ratio ratio of hydroxyapatite nano assembling ball chain and silver nitrate is 1: 1～1: 10.
5. according to claim 1, it is characterized in that the calcium source is calcium sulphate, nitrate of lime, calcium chloride.
6. according to claim 1, it is characterized in that the phosphoric acid root is sodium hydrogen phosphate, sodium dihydrogen phosphate, dipotassium hydrogen phosphate, potassium dihydrogen phosphate.
7. according to claim 1, it is characterized in that described template is aliphatic alcohols, polyethylene glycols, polyvinyl alcohol, alkylolamides class, alkyl amine, alkylbenzene phenols, carboxylate, phosphate, sulphate, sulfonate or its mixture.
8. according to claim 1, it is characterized in that employed reductant is ascorbic acid, hydrazine hydrate, glucose, trisodium citrate.
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| CN2012101584773A CN102657228A (en) | 2012-05-21 | 2012-05-21 | Method for in-situ preparing nano-silver compound bactericide |
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Cited By (10)
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|---|---|---|---|---|
| CN104743686A (en) * | 2015-04-08 | 2015-07-01 | 华东理工大学 | Novel renewable fish tank sterilizing and oxygen-releasing bag |
| CN105413720A (en) * | 2015-11-08 | 2016-03-23 | 华东理工大学 | Silver phosphate based compound catalysis unit bonding construction method |
| CN107114405A (en) * | 2017-05-05 | 2017-09-01 | 华东师范大学第附属中学 | Nano Silver/hydroxide nanoparticle assembling ball compound disinfectant and preparation method thereof |
| CN107281555A (en) * | 2017-06-22 | 2017-10-24 | 江苏沥泽生化科技有限公司 | Preparation method of silver-carrying nano hydroxyapatite of potent long acting antibiotic and products thereof |
| CN107333798A (en) * | 2017-06-28 | 2017-11-10 | 华东理工大学 | A kind of preparation method of nano silver-group compound disinfectant |
| CN108323529A (en) * | 2018-04-10 | 2018-07-27 | 上海泽铭环境科技有限公司 | A kind of nanometer compound fungicide used in environmental area |
| CN108358347A (en) * | 2018-04-06 | 2018-08-03 | 彭姝文 | A kind of water purification system in gardens |
| CN108455759A (en) * | 2018-04-06 | 2018-08-28 | 彭姝文 | The water purification system of intelligent Landscape |
| CN111226917A (en) * | 2020-03-26 | 2020-06-05 | 深圳市亚微新材料有限公司 | Preparation method of zirconium hydrogen phosphate nano-silver antibacterial composite material |
| CN112956494A (en) * | 2021-02-18 | 2021-06-15 | 同曦集团有限公司 | Nano composite antibacterial powder and application thereof in ceramic tea set |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104743686A (en) * | 2015-04-08 | 2015-07-01 | 华东理工大学 | Novel renewable fish tank sterilizing and oxygen-releasing bag |
| CN105413720A (en) * | 2015-11-08 | 2016-03-23 | 华东理工大学 | Silver phosphate based compound catalysis unit bonding construction method |
| CN107114405A (en) * | 2017-05-05 | 2017-09-01 | 华东师范大学第附属中学 | Nano Silver/hydroxide nanoparticle assembling ball compound disinfectant and preparation method thereof |
| CN107281555A (en) * | 2017-06-22 | 2017-10-24 | 江苏沥泽生化科技有限公司 | Preparation method of silver-carrying nano hydroxyapatite of potent long acting antibiotic and products thereof |
| CN107333798A (en) * | 2017-06-28 | 2017-11-10 | 华东理工大学 | A kind of preparation method of nano silver-group compound disinfectant |
| CN108358347A (en) * | 2018-04-06 | 2018-08-03 | 彭姝文 | A kind of water purification system in gardens |
| CN108455759A (en) * | 2018-04-06 | 2018-08-28 | 彭姝文 | The water purification system of intelligent Landscape |
| CN108323529A (en) * | 2018-04-10 | 2018-07-27 | 上海泽铭环境科技有限公司 | A kind of nanometer compound fungicide used in environmental area |
| CN111226917A (en) * | 2020-03-26 | 2020-06-05 | 深圳市亚微新材料有限公司 | Preparation method of zirconium hydrogen phosphate nano-silver antibacterial composite material |
| CN112956494A (en) * | 2021-02-18 | 2021-06-15 | 同曦集团有限公司 | Nano composite antibacterial powder and application thereof in ceramic tea set |
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Application publication date: 20120912 |