Adsorption mechanism of copper ions in aqueous solution by chitosan–carboxymethyl starch composites

Liang Chen; Hong Ying Hao; Wan Ting Zhang; Ziqiang Shao

doi:10.1002/app.48636

Adsorption mechanism of copper ions in aqueous solution by chitosan–carboxymethyl starch composites

Liang Chen, Hong Ying Hao^*, Wan Ting Zhang, Ziqiang Shao

^*Corresponding author for this work

School of Material Science and Engineering

University of Science and Technology Beijing

Research output: Contribution to journal › Article › peer-review

22 Citations (Scopus)

Abstract

Based on the structural characteristics of chitosan (CTS) and carboxymethyl starch (CMS)， CTS–CMS composites were prepared by crosslinking. The composites had a plurality of reactive functional groups such as NH₂, NH₃ ⁺, COOH, and OH and are applied to the adsorption of Cu²⁺ in aqueous solution. The adsorption capacity and stability in acidic solution of the composites were preferable to that of raw material. The effects of temperature, contact time, initial concentration, and pH on the adsorption of Cu²⁺ were investigated. Infrared spectroscopy, scanning electron microscope–energy dispersive spectrometer, X-ray diffraction, and X-ray photoelectron spectroscopy were used to explore the adsorption mechanism. The experiment showed that chemisorption and physisorption coexisted in the adsorption process. It is promising to apply this adsorbent to remove the metal ions in wastewater.

Original language	English
Article number	48636
Journal	Journal of Applied Polymer Science
Volume	137
Issue number	18
DOIs	https://doi.org/10.1002/app.48636
Publication status	Published - 10 May 2020

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Chen, L., Hao, H. Y., Zhang, W. T., & Shao, Z. (2020). Adsorption mechanism of copper ions in aqueous solution by chitosan–carboxymethyl starch composites. Journal of Applied Polymer Science, 137(18), Article 48636. https://doi.org/10.1002/app.48636

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abstract = "Based on the structural characteristics of chitosan (CTS) and carboxymethyl starch (CMS)， CTS–CMS composites were prepared by crosslinking. The composites had a plurality of reactive functional groups such as NH2, NH3 +, COOH, and OH and are applied to the adsorption of Cu2+ in aqueous solution. The adsorption capacity and stability in acidic solution of the composites were preferable to that of raw material. The effects of temperature, contact time, initial concentration, and pH on the adsorption of Cu2+ were investigated. Infrared spectroscopy, scanning electron microscope–energy dispersive spectrometer, X-ray diffraction, and X-ray photoelectron spectroscopy were used to explore the adsorption mechanism. The experiment showed that chemisorption and physisorption coexisted in the adsorption process. It is promising to apply this adsorbent to remove the metal ions in wastewater.",

author = "Liang Chen and Hao, {Hong Ying} and Zhang, {Wan Ting} and Ziqiang Shao",

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PY - 2020/5/10

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AB - Based on the structural characteristics of chitosan (CTS) and carboxymethyl starch (CMS)， CTS–CMS composites were prepared by crosslinking. The composites had a plurality of reactive functional groups such as NH2, NH3 +, COOH, and OH and are applied to the adsorption of Cu2+ in aqueous solution. The adsorption capacity and stability in acidic solution of the composites were preferable to that of raw material. The effects of temperature, contact time, initial concentration, and pH on the adsorption of Cu2+ were investigated. Infrared spectroscopy, scanning electron microscope–energy dispersive spectrometer, X-ray diffraction, and X-ray photoelectron spectroscopy were used to explore the adsorption mechanism. The experiment showed that chemisorption and physisorption coexisted in the adsorption process. It is promising to apply this adsorbent to remove the metal ions in wastewater.

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Adsorption mechanism of copper ions in aqueous solution by chitosan–carboxymethyl starch composites

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