Absorption properties of Cd<sup>2+</sup> ion imprinted poly(fulvic acid)

SHANG Hongzhou; ZHAO Jingdong; HE Junnan; SUN Xiaoran

doi:10.11949/j.issn.0438-1157.20161156

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Absorption properties of Cd²⁺ ion imprinted poly(fulvic acid)

更新时间：2025-12-10

- Absorption properties of Cd²⁺ ion imprinted poly(fulvic acid)
- CIESC Journal Issue 5, Pages: 1940-1945(2017)
- 作者机构：
  
  华北理工大学化学工程学院,河北,唐山,063210
- 作者简介：
- 基金信息：
- DOI：10.11949/j.issn.0438-1157.20161156
  CLC： Q424.3
- Online First：05 May 2017，
  
  Published：05 May 2017
- 稿件说明：
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SHANG Hongzhou, ZHAO Jingdong, HE Junnan, et al. Absorption properties of Cd²⁺ ion imprinted poly(fulvic acid)[J]. CIESC Journal, 2017, (5): 1940-1945. DOI: 10.11949/j.issn.0438-1157.20161156.
DOI：

SHANG Hongzhou, ZHAO Jingdong, HE Junnan, et al. Absorption properties of Cd²⁺ ion imprinted poly(fulvic acid)[J]. CIESC Journal, 2017, (5): 1940-1945. DOI: 10.11949/j.issn.0438-1157.20161156. DOI：

摘要

以改性黄腐酸为功能单体，反相悬浮聚合法制备了Cd2+离子印迹聚合物，并研究其吸附性能。动力学模型表明，黄腐酸基Cd2+离子印迹聚合物对Cd2+的吸附符合准二级动力学吸附模型，相关系数达到0.9977；热力学研究发现，黄腐酸基Cd2+离子印迹聚合物吸附重金属离子的形式为单分子层表面吸附，与Langmuir等温吸附模型相符；竞争吸附实验显示，竞争离子Pb2+、Cr3+存在时，Cd2+/Pb2+、Cd2+/Cr3+的相对选择性系数分别为4.32、13.47，说明MFA-IIP对模板离子拥有较强的选择识别性能，竞争离子化合价不同，选择识别性更加显著。

Abstract

Cd2+ ion imprinted polymer (MFA-IIP) was synthesized by inverse suspension copolymerization of modified fulvic acid monomer. Adsorption study showed that adsorption kinetics of MFA-IIP to Cd2+ is in accordance with pseudo-second-order kinetic model with correlation coefficient of 0.9977. The adsorption of heavy metal ions on MFA-IIP polymer thermodynamically follows single-molecule surface Langmuir adsorption model. In presence of competitive Pb2+ and Cr3+ ions

the polymer exhibited strong selection and recognition to template ion with relative selectivity coefficient of Cd2+/Pb2+ and Cd2+/Cr3+ at 4.32 and 13.47

respectively. When other metal ions with different valences existed in aqueous solution

selective recognition of MFA-IIP polymer to Cd2+ would be much more obvious.

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Absorption properties of Cd2+ ion imprinted poly(fulvic acid)

DOI：10.11949/j.issn.0438-1157.20161156

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Absorption properties of Cd²⁺ ion imprinted poly(fulvic acid)