Synthesis of pH-Responsive Chitosan Nanospheres and Adsorption of Nickel(II) from Aqueous Solution

Ying LIN; Dong-mei XU; Qing-ping SONG; Jian-gang Gao

doi:10.14028/j.cnki.1003-3726.2015.03.006

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Synthesis of pH-Responsive Chitosan Nanospheres and Adsorption of Nickel(II) from Aqueous Solution

更新时间：2022-09-18

- Synthesis of pH-Responsive Chitosan Nanospheres and Adsorption of Nickel(II) from Aqueous Solution
- Polymer Bulletin Vol. 28, Issue 3, Pages: 45-52(2015)
- 作者机构：
  
  1.安徽工程大学　生物与化学工程学院，芜湖　241000
  2.淮河流域水资源保护局，蚌埠　233001
- 作者简介：
- 基金信息：
- DOI：10.14028/j.cnki.1003-3726.2015.03.006
  CLC：
- Published：2015-03，
  
  Received：02 July 2014，
  
  Revised：15 October 2014，
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Ying LIN, Dong-mei XU, Qing-ping SONG, Jian-gang Gao. Synthesis of pH-Responsive Chitosan Nanospheres and Adsorption of Nickel(II) from Aqueous Solution. [J]. Polymer Bulletin 28(3):45-52(2015)
DOI：

Ying LIN, Dong-mei XU, Qing-ping SONG, Jian-gang Gao. Synthesis of pH-Responsive Chitosan Nanospheres and Adsorption of Nickel(II) from Aqueous Solution. [J]. Polymer Bulletin 28(3):45-52(2015) DOI： 10.14028/j.cnki.1003-3726.2015.03.006.

摘要

本工作于水中简单地合成了生物相容且可生物降解的壳聚糖/聚丙烯酸纳米微球

产物具有优异的水稳定性和单分散性。通过傅里叶变换红外光谱、动态光散射、透射电子显微镜、扫描电子显微镜和zeta电位对所得纳米微球的理化性质进行表征

结果显示壳聚糖纳米微球的表面结构和zeta电位对pH值改变具有响应性。携带丰富官能团的产物微球为装填其它活性材料提供了功能位点

因此

可将该纳米微球用作水中去除镍离子的吸附剂。本文从吸附时间、pH值、温度及起始离子浓度等方面研究了纳米微球的吸附行为

发现壳聚糖微球对镍离子的吸附量可以高达44.41mg/g。此外

吸附等温线遵循Freundlich等式

而其动力学符合拟二级模型。

Abstract

In this work

biocompatible and biodegradable chitosan nanospheres were successfully prepared by a simple method in water. The nanospheres were well monodispersed and stable in aqueous solution. The physicochemical properties of nanospheres were investigated by using Fourier transform infrared spectroscopy

dynamic light scattering

transmission electron microscope

scanning electron microscopy and zeta potential. It was found that the surface structure and zeta potential of nanospheres can be manipulated by changing pH. The obtained chitosan nanospheres provide the functional sites with abundant functional groups for embedding of other active materials. Thus

the chitosan nanospheres were employed as absorbents for removal of nickel(II) ions from aqueous solutions. The adsorption behaviors of nanospheres were investigated including the effects of adsorption time

pH value

temperature and initial concentration by the batch method. The adsorption capacity of the chitosan nanospheres for nickel(II) ions was observed to be as high as 44.41mg/g. Moreover

the adsorption isotherms obeyed the Freundlich equation

and kinetics followed a pseudo-second order model.

关键词

壳聚糖纳米微球纳米结构吸附镍离子

Keywords

Chitosan nanospheresNanostrcturesAdsorptionNickel(II) ions

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