Cu(II)-imprinted chitosan derivative containing carboxyl groups for the selective removal of Cu(II) from aqueous solution

Wataru Yoshida, Tatsuya Oshima, Yoshinari Baba, Masahiro Goto

Research output: Contribution to journalArticle

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Abstract

We report a highly selective adsorbent for Cu(II) prepared using the metal-imprinted technique. As the base material, we used the natural adsorbent chitosan, which can be obtained from chitin by the deacetylation reaction. Chitosan was modified with ketoglutaric acid to introduce multiple functional carboxyl groups, which interact with metal cations. Cu(II)-imprinted chitosan was prepared by the imprinting technique and its behavior as an adsorbent for various metal ions, including Cu(II), Ni(II), Co(II), Zn(II), and Cd(II), was investigated. Cu(II)-imprinted chitosan exhibited extremely high selectivity for the imprinted Cu(II) ion compared with the other metal ions. This result indicates that the metal imprinting technique is very useful for the development of highly selective adsorbents. However, desorption of Cu(II) from the imprinted adsorbent was not sufficient because of the strong binding between Cu(II) and the imprinted adsorption sites.

Original languageEnglish
Pages (from-to)630-634
Number of pages5
JournalJOURNAL OF CHEMICAL ENGINEERING OF JAPAN
Volume49
Issue number7
DOIs
Publication statusPublished - Jan 1 2016

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Chitosan
Ions
Derivatives
Adsorbents
Metals
Metal ions
Ketoglutaric Acids
Chitin
Functional groups
Cations
Desorption
Positive ions
Adsorption
Acids

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)

Cite this

Cu(II)-imprinted chitosan derivative containing carboxyl groups for the selective removal of Cu(II) from aqueous solution. / Yoshida, Wataru; Oshima, Tatsuya; Baba, Yoshinari; Goto, Masahiro.

In: JOURNAL OF CHEMICAL ENGINEERING OF JAPAN, Vol. 49, No. 7, 01.01.2016, p. 630-634.

Research output: Contribution to journalArticle

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AB - We report a highly selective adsorbent for Cu(II) prepared using the metal-imprinted technique. As the base material, we used the natural adsorbent chitosan, which can be obtained from chitin by the deacetylation reaction. Chitosan was modified with ketoglutaric acid to introduce multiple functional carboxyl groups, which interact with metal cations. Cu(II)-imprinted chitosan was prepared by the imprinting technique and its behavior as an adsorbent for various metal ions, including Cu(II), Ni(II), Co(II), Zn(II), and Cd(II), was investigated. Cu(II)-imprinted chitosan exhibited extremely high selectivity for the imprinted Cu(II) ion compared with the other metal ions. This result indicates that the metal imprinting technique is very useful for the development of highly selective adsorbents. However, desorption of Cu(II) from the imprinted adsorbent was not sufficient because of the strong binding between Cu(II) and the imprinted adsorption sites.

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