Photo-swing extraction system for lanthanide separation by a thermosensitive polymer gel combined with carbon nanotubes

Syouhei Nishihama, Kayo Ohsawa, Yasushi Yamada, Kazuharu Yoshizuka, Tsuyohiko Fujigaya, Naotoshi Nakashima

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

A novel photo-swing extraction system for lanthanide separation was developed using an acid phosphoxy ethyl methacrylate (Phosmer-M) copolymerized thermosensitive polymer gel and N-isopropylacrylamide (NIPAM) combined with single-walled carbon nanotubes (CNTs) as the extracting material. The swelling and shrinking phase transition of the Phosmer-M/NIPAM/CNT gel was successfully induced by photo-irradiation with a halogen lamp because of the heat generation by the CNTs, which occurred upon visible light absorption. The extraction ability of Eu(III) increased upon photo-irradiation because of changes in the volume and hydrophobicity of the composite gel. The ratio of the distribution coefficient with and without photo-irradiation (K dphoto/K d25) increased with an increase in the pH. The composite gel possessed sufficient loading and release capacities for Eu(III), La(III) and Lu(III) in repeated processes after photo-irradiation. The selectivity for Eu(III) over La(III) in binary metal systems increased due to photo-irradiation because the observed improvement in the extraction of Eu(III) was greater than that of La(III) during the phase transition of the gel.

Original languageEnglish
Pages (from-to)142-147
Number of pages6
JournalReactive and Functional Polymers
Volume72
Issue number2
DOIs
Publication statusPublished - Feb 1 2012

Fingerprint

Lanthanoid Series Elements
Carbon Nanotubes
Rare earth elements
Carbon nanotubes
Polymers
irradiation
rare earth element
Gels
gel
polymer
Irradiation
Phase Transition
phase transition
Phase transitions
Halogens
Methacrylates
Heat generation
Composite materials
halogen
hydrophobicity

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Environmental Chemistry
  • Biochemistry
  • Chemical Engineering(all)
  • Polymers and Plastics
  • Materials Chemistry

Cite this

Photo-swing extraction system for lanthanide separation by a thermosensitive polymer gel combined with carbon nanotubes. / Nishihama, Syouhei; Ohsawa, Kayo; Yamada, Yasushi; Yoshizuka, Kazuharu; Fujigaya, Tsuyohiko; Nakashima, Naotoshi.

In: Reactive and Functional Polymers, Vol. 72, No. 2, 01.02.2012, p. 142-147.

Research output: Contribution to journalArticle

Nishihama, Syouhei ; Ohsawa, Kayo ; Yamada, Yasushi ; Yoshizuka, Kazuharu ; Fujigaya, Tsuyohiko ; Nakashima, Naotoshi. / Photo-swing extraction system for lanthanide separation by a thermosensitive polymer gel combined with carbon nanotubes. In: Reactive and Functional Polymers. 2012 ; Vol. 72, No. 2. pp. 142-147.
@article{eb266099e9094f5f8217957397e695b4,
title = "Photo-swing extraction system for lanthanide separation by a thermosensitive polymer gel combined with carbon nanotubes",
abstract = "A novel photo-swing extraction system for lanthanide separation was developed using an acid phosphoxy ethyl methacrylate (Phosmer-M) copolymerized thermosensitive polymer gel and N-isopropylacrylamide (NIPAM) combined with single-walled carbon nanotubes (CNTs) as the extracting material. The swelling and shrinking phase transition of the Phosmer-M/NIPAM/CNT gel was successfully induced by photo-irradiation with a halogen lamp because of the heat generation by the CNTs, which occurred upon visible light absorption. The extraction ability of Eu(III) increased upon photo-irradiation because of changes in the volume and hydrophobicity of the composite gel. The ratio of the distribution coefficient with and without photo-irradiation (K dphoto/K d25) increased with an increase in the pH. The composite gel possessed sufficient loading and release capacities for Eu(III), La(III) and Lu(III) in repeated processes after photo-irradiation. The selectivity for Eu(III) over La(III) in binary metal systems increased due to photo-irradiation because the observed improvement in the extraction of Eu(III) was greater than that of La(III) during the phase transition of the gel.",
author = "Syouhei Nishihama and Kayo Ohsawa and Yasushi Yamada and Kazuharu Yoshizuka and Tsuyohiko Fujigaya and Naotoshi Nakashima",
year = "2012",
month = "2",
day = "1",
doi = "10.1016/j.reactfunctpolym.2011.12.001",
language = "English",
volume = "72",
pages = "142--147",
journal = "Reactive and Functional Polymers",
issn = "1381-5148",
publisher = "Elsevier",
number = "2",

}

TY - JOUR

T1 - Photo-swing extraction system for lanthanide separation by a thermosensitive polymer gel combined with carbon nanotubes

AU - Nishihama, Syouhei

AU - Ohsawa, Kayo

AU - Yamada, Yasushi

AU - Yoshizuka, Kazuharu

AU - Fujigaya, Tsuyohiko

AU - Nakashima, Naotoshi

PY - 2012/2/1

Y1 - 2012/2/1

N2 - A novel photo-swing extraction system for lanthanide separation was developed using an acid phosphoxy ethyl methacrylate (Phosmer-M) copolymerized thermosensitive polymer gel and N-isopropylacrylamide (NIPAM) combined with single-walled carbon nanotubes (CNTs) as the extracting material. The swelling and shrinking phase transition of the Phosmer-M/NIPAM/CNT gel was successfully induced by photo-irradiation with a halogen lamp because of the heat generation by the CNTs, which occurred upon visible light absorption. The extraction ability of Eu(III) increased upon photo-irradiation because of changes in the volume and hydrophobicity of the composite gel. The ratio of the distribution coefficient with and without photo-irradiation (K dphoto/K d25) increased with an increase in the pH. The composite gel possessed sufficient loading and release capacities for Eu(III), La(III) and Lu(III) in repeated processes after photo-irradiation. The selectivity for Eu(III) over La(III) in binary metal systems increased due to photo-irradiation because the observed improvement in the extraction of Eu(III) was greater than that of La(III) during the phase transition of the gel.

AB - A novel photo-swing extraction system for lanthanide separation was developed using an acid phosphoxy ethyl methacrylate (Phosmer-M) copolymerized thermosensitive polymer gel and N-isopropylacrylamide (NIPAM) combined with single-walled carbon nanotubes (CNTs) as the extracting material. The swelling and shrinking phase transition of the Phosmer-M/NIPAM/CNT gel was successfully induced by photo-irradiation with a halogen lamp because of the heat generation by the CNTs, which occurred upon visible light absorption. The extraction ability of Eu(III) increased upon photo-irradiation because of changes in the volume and hydrophobicity of the composite gel. The ratio of the distribution coefficient with and without photo-irradiation (K dphoto/K d25) increased with an increase in the pH. The composite gel possessed sufficient loading and release capacities for Eu(III), La(III) and Lu(III) in repeated processes after photo-irradiation. The selectivity for Eu(III) over La(III) in binary metal systems increased due to photo-irradiation because the observed improvement in the extraction of Eu(III) was greater than that of La(III) during the phase transition of the gel.

UR - http://www.scopus.com/inward/record.url?scp=84855174418&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84855174418&partnerID=8YFLogxK

U2 - 10.1016/j.reactfunctpolym.2011.12.001

DO - 10.1016/j.reactfunctpolym.2011.12.001

M3 - Article

AN - SCOPUS:84855174418

VL - 72

SP - 142

EP - 147

JO - Reactive and Functional Polymers

JF - Reactive and Functional Polymers

SN - 1381-5148

IS - 2

ER -