化工新型材料

化工新型材料 ›› 2019, Vol. 47 ›› Issue (2) : 140-145.

科学研究

氨基化PAN@SiO₂纳米纤维膜除铬性能研究

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Preparation of aminated PAN@SiO₂ membrane and its Cr(Ⅵ)-removal capacity

Meng Yafei, Pei Guangling

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Received		Published
2017-08-14		2019-02-20
Issue Date	Revised Date
2019-03-18	2017-08-14

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摘要

结合静电纺丝技术和溶胶-凝胶法制备了聚丙烯腈(PAN)@SiO₂纳米纤维膜,利用γ-氨丙基三乙氧基硅烷(KH550)对PAN@SiO₂纳米纤维膜进行氨基改性,成功制备出APAN@SiO₂复合纳米纤维膜。通过扫描电子显微镜、傅里叶变换红外光谱等方法对纳米纤维膜的形貌、结构进行分析,利用电感耦合等离子体原子发射光谱仪对纤维膜的除Cr(Ⅵ)能力进行表征。结果表明:纳米SiO₂颗粒在PAN纳米纤维膜表面生长后,使得PAN纳米纤维膜的比表面积从8.76m²/g增大到13.32m²/g;APAN@SiO₂复合纳米纤维膜的机械性能优异;在Cr(Ⅵ)溶液初始质量浓度为100mg/L、SiO₂溶胶-凝胶时间为6h、KH550体积分数为2%条件下,APAN@SiO₂复合纳米纤维膜除铬效果最好,最大吸附量达到112.6mg/g。吸附过程符合准二级动力学方程和Langmuir等温吸附模型。循环吸附实验表明,APAN@SiO₂复合纳米纤维膜经过4次循环实验后,除铬效率依然保持在50%以上。

Abstract

PAN@SiO₂ composite nanofibrous membrane was prepared through electrospining and sol-gel method,the as-prepared membrane was further modified by aminopropyltriethoxysilane(KH550) to obtain surface amino functionalized PAN@SiO₂ composite nanofibrous membrane.The properties of membrane were investigated through scanning electron microscope (SEM) and fourier transform infrared spectrometer (FT-IR).A batch experiments were conducted to study Cr(Ⅵ) removal ability of membrane by inductively coupled plasma spectrometer(ICP-AES).The results indicated that the specific surface area of membrane was increased from 8.76 to 13.32m²/g due to the growth of SiO₂ nanoparticles.The membrane also had excellent mechanical properties.The sample obtained under the conditions of growth time of SiO₂ was 8h and the volume fraction of KH550 was 2% had the best removal capacity of Cr(Ⅵ) when the initial concentration of Cr(Ⅵ) was 100mg/L,the maximum adsorption capacity was 112.6mg/g.Moreover,the adsorption experiments showed that the adsorption process belonged to langmuir adsorption model and the kinetics of adsorption followed the pseudo-second-order model.The cyclic experiments confirmed that the best removal capacity of Cr(Ⅵ) can be maintain above 50% after the fourth experiment.

关键词

静电纺丝 / 纳米纤维膜 / 重金属离子 / 二氧化硅

Key words

electrospinning / nanofibrous membrane / heavy metal ion / SiO₂

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氨基化PAN@SiO₂纳米纤维膜除铬性能研究[J]. 化工新型材料, 2019, 47(2): 140-145 DOI:

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原文顺序 | 出版日期 | 本文引用

[1] Huang F,Xu Y,Liao S,et al.Preparation of amidoxime polyacrylonitrile chelating nanofibers and their application for adsorption of metal ions[J].Materials,2013,6(3):969-980.
[2] Nagajyoti P C,Lee K D,Sreekanth T V M.Heavy metals,occurrence and toxicity for plants:a review[J].Environ Chem Lett,2010,8(3):199-216.
[3] Barrera-Díaz C E,Lugo-Lugo V,Bilyeu B J.A review of chemical,electrochemical and biological methods for aqueous Cr(Ⅵ) reduction[J].Hazar Mater,2012,223-224:1-12.
[4] 陈佑宁,高莉,贺茂芳,等.聚乙烯四唑型螯合树脂及其对重金属离子的吸附性能[J].高等学校化学学报,2014,35(7):1596-1602.
[5] Xie S Y,Liu X Y,Zhang B W,et al.Long-life,high-efficiency lithium-sulfur battery from a nanoassembled cathode[J].Journal of Materials Chemisty A,2015,3(6):2552-2558.
[6] Park S M,Kim D S.Electrolyte-assisted electrospinning for a self-assembled,free-standing nanofiber membrane on a curved surface[J].Advanced Materials,2015,27(10):1682-1687.
[7] Liu N,Kim K,Hsu P C,et al.Large-scale production of graphene nanoribbons from electrospun polymers[J].Journal of the American Chemical Society,2014,136(49):17284-17291.
[8] Salaberria A M,Diaz R H,Labidi J,et al.Role of chitin nanocrystals and nanofibers on physical,mechanical and functional properties in thermoplastic starch films[J].Food Hydrocolloid,2015,46:3-102.
[9] Aliabadi M,Irani M,Ismaeili J,et al.Electrospun nanofiber membrane of PEO/chitosan for the adsorption of nickel,cadmium,lead and copper ions from aqueous solution[J].Chem Eng J,2013,220:237-243.
[10] 汪滨,张凡,王娇娜,等.偕胺肟化PAN纳米纤维膜除铬性能的研究[J].高分子学报,2016(8):1105-1111.
[11] 张凡,汪滨,王娇娜,等.AOPAN@Mg(OH)₂多层次电纺纤维膜的制备及除铬性能[J].高等学校化学学报,2016,37(11):2117-2124.
[12] Neghlani P K,Rafizadeh M,Taromi F A.Preparation of aminated-polyacrylonitrile nanofiber membranes for the adsorption of metal ions:comparison with microfibers[J].Journal of Hazardous Materials,2011,186(1):182-189.
[13] Chaúque E F C,Dlamini L N,Adelodun A A,et al.Modification of electrospun polyacrylonitrile nanofibers with EDTA for the removal of Cd and Cr ions from water effluents[J].Appl Surf Sci,2016,369:19-28.
[14] Kampalanonwat P,Supaphol P.Preparation and adsorption behavior of aminated electrospun polyacrylonitrile nanofiber mats for heavy metal ion removal[J].ACS Appl Mater Inter,2010,2(12):3619-3627.
[15] 闫春秋,刘斌,鲁冠秀,等.AOPAN/PA-66复合纳米纤维膜的制备及对金属离子的吸附性能[J].高等学校化学学报,2016,37(1):189-194.
[16] 丁耀莹,王成志,问县芳,等.偕胺肟化聚丙烯腈纳米纤维的制备及在含金属离子废水处理中的应用[J].高等学校化学学报,2013,34(7):1758-1764.
[17] 高正楠,江小波,郭锴.KH550的水解工艺及其对SiO₂表面改性的研究[J].北京化工大学学报:自然科学版,2012,39(2):7-12.
[18] 王娇娜,贺欢,李秀艳,等.PA6@LDH纳米纤维膜的制备及其除Cr(Ⅵ)性能的研究[J].高分子学报,2015(7):778-785.
[19] Baral S S,Das S N,Rath P.Hexavalent chromium removal from aqueous solution by adsorption on treated sawdust[J].Biochem Eng J,2006,31(3):216-222.
[20] Jia B B,Wang J N,Wu J,et al.“Flower-Like” PA6@Mg(OH)₂ electrospun nanofibers with Cr(Ⅵ)-removal capacity[J].Chem Eng J,2014,254:98-105.
[21] Donghee P,Seong R L,Yeoung S Y,et al.Development of a new Cr(Ⅵ)-biosorbent from agricultural biowaste[J].Bioresource Technology,2008,99(18):8810-8818.
[22] Li C J,Li Y J,Wang J N,et al.PA6@Fe_xO_y nanofibrous membrane preparation and its strong Cr(Ⅵ)-removal performance[J].Chem Eng J,2013,220:294-301.
[23] Sun L,Zhang L D,Liang C H,et al.Chitosan modified Fe⁰ nanowires in porous anodic alumina and their application for the removal of hexavalent chromium from water[J].J Mater Chem,2011,21(16):5877-5880.
[24] Li Z Y,Li T T,An L B,et al.Highly efficient chromium(Ⅵ) adsorption with nanofibrous filter paper prepared through electrospinning chitosan/polymethylmethacrylate composite[J].Carbohydrate Polymers,2016,137:119-126.
[25] Gao H,Liu Y G,Zeng G M,et al.Highly efficient chromium(Ⅵ) adsorption with nanofibrous filter paper prepared through electrospinning chitosan/polymethylmethacrylate composite[J].Journal of Hazardous Materials,2008,150:446-452.
[26] Elangovan R,Ligy Philip,Chandrara K.Biosorption of hexavalent and trivalent chromium by palm flower (Borassus aethiopum)[J].Chem Eng J,2008,141(1/2/3):99-111.
[27] Yuan P,Fan M D,Yang D,et al.Montmorillonite-supported magnetite nanoparticles for the removal of hexavalent chromium [Cr(Ⅵ)] from aqueous solutions[J].Journal of Hazardous Materials,2009,166(2/3):821-829.
[28] Vikrant Sarin,Pant K K.Removal of chromium from industrial waste by using eucalyptus bark[J].Bioresource Technology,2006,97(1):15-20.
[29] Lazaridis N K,Pandi T A,Matis K A.Chromium(Ⅵ) removal from aqueous solutions by Mg-Al-CO₃ hydrotalcite:sorption-desorption kinetic and equilibrium studies[J].Ind Eng Chem Research,2004,43(9):2209-2215.

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