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Updated: Jul 17, 2026

Thermochemical Studies of Ni(II) and Zn(II) Ternary Complexes Using Ion Mobility-Mass Spectrometry
Published on: June 8, 2022
Mechanisms and kinetics of chelating reaction between novel chitosan derivatives and Zn(II)
Ping Ding1, Ke-Long Huang, Gui-Yin Li
1College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, PR China.
Abstract:
Modified chitosan such as chitosan alpha-ketoglutaric acid (KCTS) and hydroxamated chitosan alpha-ketoglutaric acid (HKCTS) are successfully prepared. The resulting polymers were characterized by 13C NMR and X-ray diffraction (XRD), respectively. A adsorption system was applied to study the adsorption of Zn(II) ion onto chitosan derivatives. The isothermal sorption kinetics of chitosan derivatives for Zn(II) ion has been investigated. The kinetics experimental data correlated well with the second-order kinetic model, indicating that the chemical sorption was the rate-limiting step. The adsorption mechanism of chitosan derivatives with Zn(II) was studied by Fourier transform infrared spectroscopy (FT-IR) and X-ray photoelectron spectroscopy (XPS). The results indicated that the nitrogen in amino group and the oxygen in carboxyl group of KCTS were coordination atoms. N atom of amino group, O atom of hydroxamic acid and O atom of carbonyl group in HKCTS coordinated with Zn(II).
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