化工新型材料

化工新型材料 ›› 2019, Vol. 47 ›› Issue (8) : 201-205.

科学研究

介孔SiO₂纳米球为载体的Pb(Ⅱ)印迹聚合物吸附性能研究

陈双莉, 封扬, 党媛

作者信息 +

Adsorption property of Pb²⁺-imprinted polymer supported on mesoporous silica nanosphere

Chen Shuangli, Feng Yang, Dang Yuan

Author information +

文章历史 +

Received
2018-03-29
Issue Date	Revised Date
2019-09-04	2018-03-29

PDF (2408K)

摘要

以壳聚糖为单体,介孔SiO₂纳米球为载体,3-缩水甘油基氧基丙基三甲氧基硅烷(GPTMS)为交联剂制得Pb(Ⅱ)印迹聚合物,用红外光谱、X射线衍射和扫描电镜对其形态进行表征,用原子吸收分光光度计研究其吸附和洗脱等条件对聚合物吸附性能的影响。结果表明:最佳吸附酸度为pH=5～6;最佳静置吸附时间为4～6h,最佳Pb²⁺初始浓度为160～240mg/L;吸附动力学结论表明吸附速率符合准二级动力学方程。吸附等温线符合Langmuir吸附模型;用2.0mol/L硝酸溶液进行洗脱,洗脱率达到99.60%;常见干扰离子基本不干扰吸附富集测定。

Abstract

Pb²⁺-imprinted polymer was reported with the chitosan as the monomer,the mesoporous silica nanospheres as carrier and GPTMS as crosslinker.The Pb²⁺-imprinted polymers were characterized by XRD and SEM for morphology,And atomic absorption spectrophotometer was used to study the conditions of absorption and desorption.The results suggested that the optimal adsorptive acidity was pH=5～6,the optimal adsorption time was 4～6h,the optimal initial concentration of Pb²⁺ was160～240mg/L.The adsorption kinetics results showed that the adsorption rate was in accordance with the quasi-second order kinetic equation.The adsorption isotherms was conform to the Langmuir adsorption model.The elution efficiency was 99.60%,when it used 2.0mol/L nitric acid solution for elution,the usual interfering ions don't disturb enrichment measurement.

关键词

Pb(Ⅱ)印迹聚合物 / 介孔SiO₂纳米球 / 吸附

Key words

Pb(Ⅱ)-imprinted polymer / mesoporous silica nanosphere / adsorption

引用本文

引用格式 ▾

介孔SiO₂纳米球为载体的Pb(Ⅱ)印迹聚合物吸附性能研究[J]. 化工新型材料, 2019, 47(8): 201-205 DOI:

登录浏览全文

4963

注册一个新账户忘记密码

参考文献

原文顺序 | 出版日期 | 本文引用

[1] 李鹏.含铅废水的危害及其处理工艺的研究[J].水污染及处理,2018,6(1):38-46.
[2] 许中坚,吴灿辉,刘芬,等.典型铅锌冶炼厂周边土壤重金属复合污染持征研究[J].湖南科技大学学报,2007,22(1):111-114.
[3] 李彤,姚子华.普鲁士蓝膜修饰电极结合硅溶胶-凝胶技术制备高灵敏葡萄糖传感器[J].分析化学,2004,32(2):237.
[4] 杨志宇,李建平,彭图治.普鲁士蓝在化学传感器中的研究及应用[J].理化检验:化学分册,2004,40(6):368-371.
[5] 王荣,郭晓明,吴琴霞,等.基于普鲁士蓝膜修饰铂电极的葡萄糖传感器的研究[J].化学研究与应用,2001,13(4):380-382.
[6] Wang X Y,Gu H F,Yin F,et al.A glucose biosensor based on prussian blue/chitosan hybrid film[J].Biosensors,2009,24(5):1527-1530.
[7] 李路娟,刘慧君,张磊.铅(Ⅱ)离子印迹聚合物的制备及其吸附性能的研究[J].化学通报,2011,74(6):539-544.
[8] 苏现伐,石慧丽,朱桂芬,等.铅离子印迹聚合物的制备及特异吸附性能研究[J].冶金分析,2009,29(8):16-20.
[9] Liu Y,Liu Z C,Wang Y,et al.A surface ion-imprinted mesoporous sorbent for separation and determination of Pb(Ⅱ) ion by flame atomic absorption spectrometry[J].Microchim Acta,2011,172(3-4):309-317.
[10] Zhu L,Zhu Z,Zhang R,et al.Synthesis and adsorption performance of lead ion-imprinted micro-beads with combination of two functional monomers[J].Journal of Environmental Sciences,2011,23(12):1955-1961.
[11] Li C X,Gao J,Pan J M,et al.Synthesis,characterization,and adsorption performance of Pb(Ⅱ)-imprinted polymer in nano-TiO₂ matrix[J].Journal of Environmental Sciences,2009,21(2):1722-1729.
[12] Zhang M L,Zhang Z H,Liu Y A,et al.Preparation of core-shell magnetic ion-imprinted polymer for selective extraction of Pb(Ⅱ) from environmental samples[J].Chemical Engineering Journal,2011,178:443-450.
[13] Esen C,Andac M,Bereli N,et al.Highly selective ion-imprinted particles for solid-phase extraction of Pb²⁺ ions[J].Materials Science and Engineering C,2009,29(8):2464-2470.
[14] Teng Z G,Han Y D,Li J,et al.Preparation of hollow mesoporous silica spheres by a sol-gel/emulsion approach[J].Microporous and Mesoporous Materials,2010,127(1-2):67-72.
[15] Li C,Gao J,Pan J,et al.Synthesis,characterization,and adsorption performance of Pb(Ⅱ)-imprinted polymer in nano-TiO₂ matrix[J].Japanese Journal of Physiological Psychology and Psychophysiology,2009,21(12):1722.