Hydrogel adsorbents of poly(N-isopropylacrylamide-co-methacryloyloxymethyl-12-crown-4) for Li+ recovery prepared by droplet microfluidics

Yong Seok Kim, Hyang Moo Lee, Jung Hyun Kim, Jin Joo, In Woo Cheong

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

This article describes the synthesis and application of hydrogel adsorbents for lithium ion (Li+) recovery from seawater. The monodisperse hydrogel adsorbent particles of crosslinked poly(N-isopropylacrylamide-co-methacryloyloxymethyl-12-crown-4) [P(NIPAAm-co-M12C4)] were prepared using droplet microfluidics. For selective binding of Li+, methacryloyloxymethyl-12-crown-4 (M12C4) was synthesized from 2-hydroxymethyl-12-crown-4 and methacryloyl chloride. M12C4 was then used as a comonomer in the photo-polymerization of aqueous droplets containing N-isopropylacrylamide (NIPAAm) and N,N′-methylenebisacrylamide (MBA) in the presence of 2,2-diethoxyacetophenone (DEAP) under 365 nm UV irradiation. The chemical composition and morphology of P(NIPAAm-co-M12C4) hydrogel adsorbents were analyzed by IR, NMR, optical microscopy, and SEM techniques. Inductively coupled plasma mass spectrometry (ICP-MS) and optical emission spectrometry (ICP-OES) analyses revealed 89% Li+ adsorption efficiency with high selectivity among several different metal ions from artificial seawater and a maximum adsorption of 1.4 mg Li+/g hydrogel adsorbent achieved within 20 min.

Original languageEnglish
Pages (from-to)10656-10661
Number of pages6
JournalRSC Advances
Volume5
Issue number14
DOIs
Publication statusPublished - 2015

Fingerprint

Hydrogel
Microfluidics
Hydrogels
Adsorbents
Recovery
Seawater
Adsorption
Inductively coupled plasma mass spectrometry
Photopolymerization
Spectrometry
Particles (particulate matter)
Optical microscopy
Metal ions
Lithium
Nuclear magnetic resonance
Irradiation
Scanning electron microscopy
12-crown-4
poly-N-isopropylacrylamide
Ions

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)

Cite this

@article{7ba2272a5a874dafad7c717e560b291b,
title = "Hydrogel adsorbents of poly(N-isopropylacrylamide-co-methacryloyloxymethyl-12-crown-4) for Li+ recovery prepared by droplet microfluidics",
abstract = "This article describes the synthesis and application of hydrogel adsorbents for lithium ion (Li+) recovery from seawater. The monodisperse hydrogel adsorbent particles of crosslinked poly(N-isopropylacrylamide-co-methacryloyloxymethyl-12-crown-4) [P(NIPAAm-co-M12C4)] were prepared using droplet microfluidics. For selective binding of Li+, methacryloyloxymethyl-12-crown-4 (M12C4) was synthesized from 2-hydroxymethyl-12-crown-4 and methacryloyl chloride. M12C4 was then used as a comonomer in the photo-polymerization of aqueous droplets containing N-isopropylacrylamide (NIPAAm) and N,N′-methylenebisacrylamide (MBA) in the presence of 2,2-diethoxyacetophenone (DEAP) under 365 nm UV irradiation. The chemical composition and morphology of P(NIPAAm-co-M12C4) hydrogel adsorbents were analyzed by IR, NMR, optical microscopy, and SEM techniques. Inductively coupled plasma mass spectrometry (ICP-MS) and optical emission spectrometry (ICP-OES) analyses revealed 89{\%} Li+ adsorption efficiency with high selectivity among several different metal ions from artificial seawater and a maximum adsorption of 1.4 mg Li+/g hydrogel adsorbent achieved within 20 min.",
author = "Kim, {Yong Seok} and Lee, {Hyang Moo} and Kim, {Jung Hyun} and Jin Joo and Cheong, {In Woo}",
year = "2015",
doi = "10.1039/c4ra11527a",
language = "English",
volume = "5",
pages = "10656--10661",
journal = "RSC Advances",
issn = "2046-2069",
publisher = "Royal Society of Chemistry",
number = "14",

}

Hydrogel adsorbents of poly(N-isopropylacrylamide-co-methacryloyloxymethyl-12-crown-4) for Li+ recovery prepared by droplet microfluidics. / Kim, Yong Seok; Lee, Hyang Moo; Kim, Jung Hyun; Joo, Jin; Cheong, In Woo.

In: RSC Advances, Vol. 5, No. 14, 2015, p. 10656-10661.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Hydrogel adsorbents of poly(N-isopropylacrylamide-co-methacryloyloxymethyl-12-crown-4) for Li+ recovery prepared by droplet microfluidics

AU - Kim, Yong Seok

AU - Lee, Hyang Moo

AU - Kim, Jung Hyun

AU - Joo, Jin

AU - Cheong, In Woo

PY - 2015

Y1 - 2015

N2 - This article describes the synthesis and application of hydrogel adsorbents for lithium ion (Li+) recovery from seawater. The monodisperse hydrogel adsorbent particles of crosslinked poly(N-isopropylacrylamide-co-methacryloyloxymethyl-12-crown-4) [P(NIPAAm-co-M12C4)] were prepared using droplet microfluidics. For selective binding of Li+, methacryloyloxymethyl-12-crown-4 (M12C4) was synthesized from 2-hydroxymethyl-12-crown-4 and methacryloyl chloride. M12C4 was then used as a comonomer in the photo-polymerization of aqueous droplets containing N-isopropylacrylamide (NIPAAm) and N,N′-methylenebisacrylamide (MBA) in the presence of 2,2-diethoxyacetophenone (DEAP) under 365 nm UV irradiation. The chemical composition and morphology of P(NIPAAm-co-M12C4) hydrogel adsorbents were analyzed by IR, NMR, optical microscopy, and SEM techniques. Inductively coupled plasma mass spectrometry (ICP-MS) and optical emission spectrometry (ICP-OES) analyses revealed 89% Li+ adsorption efficiency with high selectivity among several different metal ions from artificial seawater and a maximum adsorption of 1.4 mg Li+/g hydrogel adsorbent achieved within 20 min.

AB - This article describes the synthesis and application of hydrogel adsorbents for lithium ion (Li+) recovery from seawater. The monodisperse hydrogel adsorbent particles of crosslinked poly(N-isopropylacrylamide-co-methacryloyloxymethyl-12-crown-4) [P(NIPAAm-co-M12C4)] were prepared using droplet microfluidics. For selective binding of Li+, methacryloyloxymethyl-12-crown-4 (M12C4) was synthesized from 2-hydroxymethyl-12-crown-4 and methacryloyl chloride. M12C4 was then used as a comonomer in the photo-polymerization of aqueous droplets containing N-isopropylacrylamide (NIPAAm) and N,N′-methylenebisacrylamide (MBA) in the presence of 2,2-diethoxyacetophenone (DEAP) under 365 nm UV irradiation. The chemical composition and morphology of P(NIPAAm-co-M12C4) hydrogel adsorbents were analyzed by IR, NMR, optical microscopy, and SEM techniques. Inductively coupled plasma mass spectrometry (ICP-MS) and optical emission spectrometry (ICP-OES) analyses revealed 89% Li+ adsorption efficiency with high selectivity among several different metal ions from artificial seawater and a maximum adsorption of 1.4 mg Li+/g hydrogel adsorbent achieved within 20 min.

UR - http://www.scopus.com/inward/record.url?scp=84921685625&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84921685625&partnerID=8YFLogxK

U2 - 10.1039/c4ra11527a

DO - 10.1039/c4ra11527a

M3 - Article

AN - SCOPUS:84921685625

VL - 5

SP - 10656

EP - 10661

JO - RSC Advances

JF - RSC Advances

SN - 2046-2069

IS - 14

ER -