吸附剂
壳聚糖
戊二醛
化学
Mercury(编程语言)
吸附
核化学
色谱法
有机化学
计算机科学
程序设计语言
作者
Amira K. Hajri,Bassem Jamoussi,Aishah E. Albalawi,Ohud H.N. Alhawiti,Amal A. Alsharif
标识
DOI:10.1016/j.carbpol.2022.119207
摘要
Ion-imprinting methodology was utilized in the fabrication of mercury ion-imprinted sorbent derived from modified chitosan derivatives. The Schiff base ligand was first derived from 4-amino-3-hydroxybenzoic acid and 2-pyridinecarboxaldehyde (HPB) and then incorporated with chitosan via amide bonds. The obtained modified chitosan polymeric ligand (PBCS) was combined with Hg(II) ions to produce the corresponding polymeric complex and the imprinting was then achieved upon the glutaraldehyde cross-linking and eliminating the incorporated Hg(II) ions to finally have the Hg(II) ion-imprinted sorbent material (Hg-PBCS). The materials have been investigated using various techniques such as NMR and FTIR and the obtained sorbent was examined to evaluate its selective affinity to capture the target Hg(II) ions. The developed Hg-PBCS sorbent exhibited a higher tendency toward the targeted Hg(II) ions compared to the control non-imprinted sorbent particle (NI-PBCS) with a maximum capacity of 315 mg/g. Also, the sorbent displayed relatively rapid adsorption kinetics that best correlated with the pseudo-second-order model.
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