多层状碱式碳酸锌微晶的制备及其脱除Cu~(2+)性能研究
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摘要
以壳聚糖(CS)为生物模板,采用低温水热法成功制备出了多层状碱式碳酸锌(ZCHO)微晶。采用XRD、SEM和TG等手段对产物的结构、形态和热学性能进行了表征,结果表明,单个ZCHO微晶颗粒均是由许多ZCHO纳米片构成的。添加适量的CS对形成多层状ZCHO微晶起到了至关重要的作用。热重分析结果表明,CS辅助得到的碳酸锌微晶热稳定性较高。等温吸附实验表明,在室温下,多层状ZCHO微晶能有效脱除水体中的Cu2+,去除量与浓度关系符合Freundlich模型。最后讨论了多层状ZCHO微晶大容量去除Cu2+的可能机理。
Multilayered zinc carbonate hydroxide microcrystals( ZCHO) were prepared by hydrothermal method assisted chitosan( CS) templates. The as-prepared products were characterized by X-ray diffraction( XRD),scanning electron microscopy( SEM) and thermogravimetric analysis( TG). Results indicate that every ZCHO microcrystal had a multi-layered structure and was composed of many ZCHO nanoplates. The used CS played vital roles in the formation of multi-layered ZCHO microcrystals. TG measurements had further indicated that CS-assisted zinc carbonate microcrystals had higher thermal stability. The adsorption isotherm results showed that ZCHO microcrystals with CS exhibited massive removal of Cu2 +from aqueous solution at room temperature. The equilibrium adsorption was well described by the Freundlich isotherm model. The possible removal mechanism of Cu2 +by the multilayered ZCHO was also discussed.
Multilayered zinc carbonate hydroxide microcrystals( ZCHO) were prepared by hydrothermal method assisted chitosan( CS) templates. The as-prepared products were characterized by X-ray diffraction( XRD),scanning electron microscopy( SEM) and thermogravimetric analysis( TG). Results indicate that every ZCHO microcrystal had a multi-layered structure and was composed of many ZCHO nanoplates. The used CS played vital roles in the formation of multi-layered ZCHO microcrystals. TG measurements had further indicated that CS-assisted zinc carbonate microcrystals had higher thermal stability. The adsorption isotherm results showed that ZCHO microcrystals with CS exhibited massive removal of Cu2 +from aqueous solution at room temperature. The equilibrium adsorption was well described by the Freundlich isotherm model. The possible removal mechanism of Cu2 +by the multilayered ZCHO was also discussed.
引文
[1]李勇超,李铁龙,王学,等.纳米Fe@SiO2一步合成及其对Cr(Ⅵ)的除去[J].物理化学学报,2011,27(11):2714-2715.
[2]黄园英,王倩,刘斯文,等.纳米铁快速去除地下水中多种重金属研究[J].生态环境学报,2014,23(5):847-852.
[3]曾慎亮,翁秀兰,童玉贵,等.绿色合成纳米铁同时去除水体中的Pb(Ⅱ)和Cd(Ⅱ)[J].环境科学学报,2015,35(11):3538-3544.
[4] Ponder S M,Darab J G,Mallouk T E. Remediation of Cr(Ⅵ)and Pb(Ⅱ)Aqueous Solutions using Supported Nanoscale Zerovalentiron[J].Environ Sci Technol,2000,34(12):2564-2569.
[5] Brijesh Shah,Chudasama U. Synthesis and Characterization of a Novel Hybrid Material as Amphoteric Ion Exchanger for Simultaneous Removal of Cations and Anions[J]. Hazard Mater,2014,(276):138-148.
[6] Li J R,Wang X,Yuan B L,et al. Layered chalcogenide for Cu2+removal by ion-exchange from wastewater[J]. Journal of Molecular Liquids,2014,(200):205-212.
[7] Ntimbani R N,Simate G S,Ndlovu S. Removal of Copper Ions from Dilute Synthetic Solution using Staple Ion Exchange Fibres:Equilibrium and Kinetic Studies[J]. Journal of Environmental Chemical Engineering,2015,(3):1258-1266.
[8] Takht Ravanchi Maryam,Kaghazchi Tahereh,Ali K. Application of Membrane Separation Processes in Petrochemical Industry:a Review[J].Desalination,2009,(235):199-244.
[9] Wongsakulphasatch Suwimol,Kiatkittipong Worapon,Saiswat Janekit,et al. The Adsorption Aspect of Cu2+and Zn2+on MCM-41 and SDSModified MCM-41[J]. Inorganic Chemistry Communications,2014,(46):301-304.
[10] Dong Y B,Lin H. Adsorption of Cu2+from Aqueous Solution by Modified Biomass Material[J]. Transactions of Nonferrous Metals Society of China,2015,(25):991-996.
[11] Jaime Pizarro,Ximena Castillo,Sebastián Jara,Claudia Ortiz,et al. Adsorption of Cu2+on Coal Fly Ash Modified with Functionalized Mesoporous Silica[J]. Fuel 2015,(156):96-102.
[12] Meng Y Y,Chen D Y,Sun Y T,et al. Adsorption of Cu2+Ions using Chitosan-modified Magnetic Mn Ferrite Nanoparticles Synthesized by Microwave-Assisted Hydrothermal Method[J]. Applied Surface Science 2015,(324):745-750.
[13] Nasirimoghaddam S,Zeinali S,Sabbaghi S. Chitosan Coated Magnetic Nanoparticles as Nano-adsorbent for Efficient Removal of Mercury Contentsfrom Industrial Aqueous and Oily Samples[J]. Journal of Industrial and Engineering Chemistry 2015,(27):79-87.
[14] Nagarethinam Kannan,Mariappan Meenakshi Sundaram. Kinetics and Mechanism of Removal of Methylene Blue by Adsorption on Various Carbons-a Comparative Study[J]. Dyes and Pigments,2011,(2)51:5-40.
[15] Wu H C,Hong C T,Chiu H T,et al. Continuous Synthesis of Carbon Spheres by a Non-catalyst Vertical Chemical Vapor Deposition[J]. Diamond and Related Materials,2009,(3):601-605.
[2]黄园英,王倩,刘斯文,等.纳米铁快速去除地下水中多种重金属研究[J].生态环境学报,2014,23(5):847-852.
[3]曾慎亮,翁秀兰,童玉贵,等.绿色合成纳米铁同时去除水体中的Pb(Ⅱ)和Cd(Ⅱ)[J].环境科学学报,2015,35(11):3538-3544.
[4] Ponder S M,Darab J G,Mallouk T E. Remediation of Cr(Ⅵ)and Pb(Ⅱ)Aqueous Solutions using Supported Nanoscale Zerovalentiron[J].Environ Sci Technol,2000,34(12):2564-2569.
[5] Brijesh Shah,Chudasama U. Synthesis and Characterization of a Novel Hybrid Material as Amphoteric Ion Exchanger for Simultaneous Removal of Cations and Anions[J]. Hazard Mater,2014,(276):138-148.
[6] Li J R,Wang X,Yuan B L,et al. Layered chalcogenide for Cu2+removal by ion-exchange from wastewater[J]. Journal of Molecular Liquids,2014,(200):205-212.
[7] Ntimbani R N,Simate G S,Ndlovu S. Removal of Copper Ions from Dilute Synthetic Solution using Staple Ion Exchange Fibres:Equilibrium and Kinetic Studies[J]. Journal of Environmental Chemical Engineering,2015,(3):1258-1266.
[8] Takht Ravanchi Maryam,Kaghazchi Tahereh,Ali K. Application of Membrane Separation Processes in Petrochemical Industry:a Review[J].Desalination,2009,(235):199-244.
[9] Wongsakulphasatch Suwimol,Kiatkittipong Worapon,Saiswat Janekit,et al. The Adsorption Aspect of Cu2+and Zn2+on MCM-41 and SDSModified MCM-41[J]. Inorganic Chemistry Communications,2014,(46):301-304.
[10] Dong Y B,Lin H. Adsorption of Cu2+from Aqueous Solution by Modified Biomass Material[J]. Transactions of Nonferrous Metals Society of China,2015,(25):991-996.
[11] Jaime Pizarro,Ximena Castillo,Sebastián Jara,Claudia Ortiz,et al. Adsorption of Cu2+on Coal Fly Ash Modified with Functionalized Mesoporous Silica[J]. Fuel 2015,(156):96-102.
[12] Meng Y Y,Chen D Y,Sun Y T,et al. Adsorption of Cu2+Ions using Chitosan-modified Magnetic Mn Ferrite Nanoparticles Synthesized by Microwave-Assisted Hydrothermal Method[J]. Applied Surface Science 2015,(324):745-750.
[13] Nasirimoghaddam S,Zeinali S,Sabbaghi S. Chitosan Coated Magnetic Nanoparticles as Nano-adsorbent for Efficient Removal of Mercury Contentsfrom Industrial Aqueous and Oily Samples[J]. Journal of Industrial and Engineering Chemistry 2015,(27):79-87.
[14] Nagarethinam Kannan,Mariappan Meenakshi Sundaram. Kinetics and Mechanism of Removal of Methylene Blue by Adsorption on Various Carbons-a Comparative Study[J]. Dyes and Pigments,2011,(2)51:5-40.
[15] Wu H C,Hong C T,Chiu H T,et al. Continuous Synthesis of Carbon Spheres by a Non-catalyst Vertical Chemical Vapor Deposition[J]. Diamond and Related Materials,2009,(3):601-605.