CN103041783A - Preparation method of chitosan-Ti02 adsorbent - Google Patents
Preparation method of chitosan-Ti02 adsorbent Download PDFInfo
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- CN103041783A CN103041783A CN2012105484026A CN201210548402A CN103041783A CN 103041783 A CN103041783 A CN 103041783A CN 2012105484026 A CN2012105484026 A CN 2012105484026A CN 201210548402 A CN201210548402 A CN 201210548402A CN 103041783 A CN103041783 A CN 103041783A
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- chitosan
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- silver
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Abstract
The invention relates to a preparation method of a solid adsorbent composition containing silicon dioxide. A preparation method of a chitosan-Ti02 adsorbent comprises the following steps: dissolving chitosan into dilute acetic acid, adding deionized water, performing ultrasonic treatment at room temperature till complete dissolution, adding titanium dioxide, and performing ultrasonic dispersion for 10 minutes; adding 0.2 mL of epoxy chloropropane, and performing cross-linking reaction for 3-4 h; and injecting a mixed chitosan solution after cross-linking into an alkaline solution dropwise, solidifying into a sphere, rinsing the surface of the microsphere till neutrality, and drying the microsphere in a drying box at 60 DEG C. By the preparation method, the novel chitosan-titanium dioxide adsorbent is prepared for treating silver ion-containing wastewater; experiments show that the chitosan-titanium dioxide adsorbent has a relatively high silver ion adsorbing capacity, with the adsorbing capacity of 100.3 ms/ g at an initial concentration of 1,000 mg/ L, and the adsorbent adsorbing silver ions has better methyl orange degrading effect; electron microscope scanning shows that the chitosan-titanium dioxide adsorbent can generate nano-silver on the surface after the silver ions are adsorbed under an ultraviolet condition; and energy spectrum shows the nano-silver particles can automatically shed off from the surface of the the chitosan-titanium dioxide adsorbent under a certain condition.
Description
Technical field
The present invention relates to a kind of preparation method who comprises the solid sorbent compositions of silica.
Background technology
The annual discharging of the industries such as electronics, metallurgy, leather and plating contains the heavy metal ion industrial wastewater in a large number, causes the many urban groundwaters of China and agricultural water heavy metal ion content to exceed standard or near warning line.Heavy metal causes very big harm to ecological environment on the one hand, is detrimental to health, and is human more and more extensive to the use of heavy metal on the other hand along with industrial expansion, thereby causes the relative shortage of heavy metal resources.Therefore, how effectively reclaiming precious metal is another outstanding problem in the current field of environment protection.
Nano titanium oxide has very strong redox ability under light action, the removal of drinking water and Industry Waste organic pollutants is had widely applicability, but can't thoroughly solve heavy-metal pollution problem day by day serious in the water.
Summary of the invention
The present invention aims to provide a kind of shitosan-Ti0 of high effect nontoxic
2The preparation method of adsorbent.
Shitosan-Ti0 of the present invention
2The preparation method of adsorbent is dissolved in shitosan in the acetic acid,diluted, adds deionized water, and is ultrasonic to all dissolvings under the room temperature, adds titanium dioxide, ultrasonic dispersion 10 minutes again; Add 0.2 mL epoxychloropropane, cross-linking reaction 3-4 h.Crosslinked complete shitosan mixed solution is dropwise injected alkaline solution solidify balling-up, with deionized water that the microsphere surface flushing is extremely neutral, 60 ℃ of lower oven dry of baking oven.
The present invention has prepared novel shitosan-titanium dioxide adsorbent and has processed silver ion waste water.Experiment finds that shitosan-titanium dioxide adsorbent has preferably adsorption capacity to silver ion, and adsorption capacity is 100.3 ms/g when initial concentration is 1 000 mg/L, and the adsorbent that has adsorbed silver ion has better degradation effect to methyl orange.ESEM shows, Adsorption For Ag has the generation of Nano Silver with the rear surface under shitosan-titanium dioxide adsorbent ultraviolet condition, and power spectrum shows that nano-Ag particles can be by shitosan-titanium dioxide adsorbent surface self falling under certain condition.
The specific embodiment
Embodiment one
1, shitosan-Ti0
2The preparation method of adsorbent is characterized in that shitosan is dissolved in the acetic acid,diluted, adds deionized water, and is ultrasonic to all dissolvings under the room temperature, adds titanium dioxide, ultrasonic dispersion 10 minutes again; Add 0.2 mL epoxychloropropane, cross-linking reaction 3-4 h.Crosslinked complete shitosan mixed solution is dropwise injected alkaline solution solidify balling-up, with deionized water that the microsphere surface flushing is extremely neutral, 60 ℃ of lower oven dry of baking oven.
Claims (1)
1., shitosan-Ti0
2The preparation method of adsorbent is characterized in that shitosan is dissolved in the acetic acid,diluted, adds deionized water, and is ultrasonic to all dissolvings under the room temperature, adds titanium dioxide, ultrasonic dispersion 10 minutes again; Add 0.2 mL epoxychloropropane, then cross-linking reaction 3-4 h dropwise is injected into it in alkaline solution, obtains microballoon, with deionized water that the microsphere surface flushing is extremely neutral, 60 ℃ of lower oven dry of baking oven.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2012105484026A CN103041783A (en) | 2012-12-18 | 2012-12-18 | Preparation method of chitosan-Ti02 adsorbent |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012105484026A CN103041783A (en) | 2012-12-18 | 2012-12-18 | Preparation method of chitosan-Ti02 adsorbent |
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| CN103041783A true CN103041783A (en) | 2013-04-17 |
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| CN2012105484026A Pending CN103041783A (en) | 2012-12-18 | 2012-12-18 | Preparation method of chitosan-Ti02 adsorbent |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103447010A (en) * | 2013-10-08 | 2013-12-18 | 慈溪市科创电子科技有限公司 | Modified polyvinyl alcohol-chitosan microsphere mercury removing adsorbent |
| CN104045857A (en) * | 2014-06-16 | 2014-09-17 | 安徽师范大学 | Silicon dioxide chitosan composite material, and preparation method and application thereof |
| CN104069830A (en) * | 2014-07-21 | 2014-10-01 | 中国地质大学（北京） | Iron modified chitosan defluorinated particle adsorbent and preparation method thereof |
| CN104353422A (en) * | 2014-10-21 | 2015-02-18 | 繁昌县倍思生产力促进中心有限公司 | Antibacterial breathing mask adsorbent and preparation method thereof |
| CN105532731A (en) * | 2016-02-02 | 2016-05-04 | 江苏时空涂料有限公司 | Preparation method of sustained-release zirconium phosphate silver-carrying antibacterial agent |
| CN105727901A (en) * | 2016-04-29 | 2016-07-06 | 河海大学 | Preparation method of titanium dioxide photocatalytic adsorbing material |
| CN106007056A (en) * | 2016-06-02 | 2016-10-12 | 哈尔滨工业大学 | Device and method for simultaneous removal of trace heavy metals in electroplating wastewater |
| CN108212105A (en) * | 2018-01-02 | 2018-06-29 | 天津市职业大学 | Application of the Tourmaline/chitosan composite material in landfill leachate treatment |
| CN108499541A (en) * | 2018-04-08 | 2018-09-07 | 山东建筑大学 | A kind of titanium sulfate-chitosan compounding filter aid and preparation method thereof |
| CN111974355A (en) * | 2020-07-13 | 2020-11-24 | 广西科技大学 | Chitosan/fibroin-based dual-structure porous adsorption filter material with silicon dioxide as pore-foaming agent and preparation method thereof |
-
2012
- 2012-12-18 CN CN2012105484026A patent/CN103041783A/en active Pending
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103447010A (en) * | 2013-10-08 | 2013-12-18 | 慈溪市科创电子科技有限公司 | Modified polyvinyl alcohol-chitosan microsphere mercury removing adsorbent |
| CN103447010B (en) * | 2013-10-08 | 2015-03-25 | 卢毅 | Modified polyvinyl alcohol-chitosan microsphere mercury removing adsorbent in water system |
| CN104045857A (en) * | 2014-06-16 | 2014-09-17 | 安徽师范大学 | Silicon dioxide chitosan composite material, and preparation method and application thereof |
| CN104045857B (en) * | 2014-06-16 | 2016-04-13 | 安徽师范大学 | A kind of silicon-dioxide Chitosan Composites, preparation method and application thereof |
| CN104069830A (en) * | 2014-07-21 | 2014-10-01 | 中国地质大学（北京） | Iron modified chitosan defluorinated particle adsorbent and preparation method thereof |
| CN104353422A (en) * | 2014-10-21 | 2015-02-18 | 繁昌县倍思生产力促进中心有限公司 | Antibacterial breathing mask adsorbent and preparation method thereof |
| CN105532731A (en) * | 2016-02-02 | 2016-05-04 | 江苏时空涂料有限公司 | Preparation method of sustained-release zirconium phosphate silver-carrying antibacterial agent |
| CN105532731B (en) * | 2016-02-02 | 2018-06-19 | 浙江华德新材料有限公司 | A kind of preparation method of slow-release phosphonic acids zirconium carrying silver antimicrobials |
| CN105727901A (en) * | 2016-04-29 | 2016-07-06 | 河海大学 | Preparation method of titanium dioxide photocatalytic adsorbing material |
| CN105727901B (en) * | 2016-04-29 | 2018-11-09 | 河海大学 | A kind of preparation method of optically catalytic TiO 2 sorbing material |
| CN106007056A (en) * | 2016-06-02 | 2016-10-12 | 哈尔滨工业大学 | Device and method for simultaneous removal of trace heavy metals in electroplating wastewater |
| CN108212105A (en) * | 2018-01-02 | 2018-06-29 | 天津市职业大学 | Application of the Tourmaline/chitosan composite material in landfill leachate treatment |
| CN108212105B (en) * | 2018-01-02 | 2021-01-12 | 天津市职业大学 | Application of tourmaline/chitosan composite material in landfill leachate treatment |
| CN108499541A (en) * | 2018-04-08 | 2018-09-07 | 山东建筑大学 | A kind of titanium sulfate-chitosan compounding filter aid and preparation method thereof |
| CN111974355A (en) * | 2020-07-13 | 2020-11-24 | 广西科技大学 | Chitosan/fibroin-based dual-structure porous adsorption filter material with silicon dioxide as pore-foaming agent and preparation method thereof |
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Application publication date: 20130417 |