Extraction mechanisms of charged organic dye molecules into silica-surfactant nanochannels in a porous alumina membrane

Akira Yamaguchi; Jun Watanabe; Mekawy M. Mahmoud; Rise Fujiwara; Kotaro Morita; Tomohisa Yamashita; Yosuke Amino; Yong Chen; Logudurai Radhakrishnan; Norio Teramae

doi:10.1016/j.aca.2005.06.029

Extraction mechanisms of charged organic dye molecules into silica-surfactant nanochannels in a porous alumina membrane

Akira Yamaguchi, Jun Watanabe, Mekawy M. Mahmoud, Rise Fujiwara, Kotaro Morita, Tomohisa Yamashita, Yosuke Amino, Yong Chen, Logudurai Radhakrishnan, Norio Teramae

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

21 Citations (Scopus)

Abstract

Extraction mechanisms of charged organic dye molecules are examined for an assembly of silica-surfactant nanochannels with a channel diameter of 3.4 nm, which is formed inside the pores of an anodic alumina membrane by a surfactant-template method. Experimental results confirm that the extraction mechanism depends on the sign of a charge of the dye molecules. The extraction of the cationic rhodamine 6G is predominantly caused by an ion-pair extraction process, whereas an anion-exchange process is mainly responsible for the extraction of the anionic sulforhodamine B. These extraction mechanisms are discussed by considering the microstructures of the silica-surfactant nanochannels.

Original language	English
Pages (from-to)	157-163
Number of pages	7
Journal	Analytica Chimica Acta
Volume	556
Issue number	1
DOIs	https://doi.org/10.1016/j.aca.2005.06.029
Publication status	Published - 2006 Jan 18

Keywords

Alumina membrane
Extraction
Silica-surfactant nanochannel

ASJC Scopus subject areas

Biochemistry
Analytical Chemistry
Spectroscopy
Environmental Chemistry

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10.1016/j.aca.2005.06.029

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Extraction mechanisms of charged organic dye molecules into silica-surfactant nanochannels in a porous alumina membrane. / Yamaguchi, Akira; Watanabe, Jun; Mahmoud, Mekawy M.; Fujiwara, Rise; Morita, Kotaro; Yamashita, Tomohisa; Amino, Yosuke; Chen, Yong; Radhakrishnan, Logudurai; Teramae, Norio.

In: Analytica Chimica Acta, Vol. 556, No. 1, 18.01.2006, p. 157-163.

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

Yamaguchi, Akira ; Watanabe, Jun ; Mahmoud, Mekawy M. ; Fujiwara, Rise ; Morita, Kotaro ; Yamashita, Tomohisa ; Amino, Yosuke ; Chen, Yong ; Radhakrishnan, Logudurai ; Teramae, Norio. / Extraction mechanisms of charged organic dye molecules into silica-surfactant nanochannels in a porous alumina membrane. In: Analytica Chimica Acta. 2006 ; Vol. 556, No. 1. pp. 157-163.

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AU - Morita, Kotaro

AU - Yamashita, Tomohisa

AU - Amino, Yosuke

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Extraction mechanisms of charged organic dye molecules into silica-surfactant nanochannels in a porous alumina membrane

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Keywords

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