Enhanced adsorption of aqueous copper(II) ions using dedoped poly-N-phenylglycine nanofibers

Ji Hoon Doh; Ji Hyun Kim; Hyeong Jin Kim; Rana Faryad Ali; Koo Shin; Young Joon Hong

doi:10.1016/j.cej.2015.04.120

Enhanced adsorption of aqueous copper(II) ions using dedoped poly-N-phenylglycine nanofibers

Ji Hoon Doh, Ji Hyun Kim, Hyeong Jin Kim, Rana Faryad Ali, Koo Shin, Young Joon Hong

Sejong University

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

36 Scopus citations

Abstract

We report on adsorption of aqueous Cu²⁺ using poly N-phenylglycine (PPG) nanofibers (NFs) prepared by radical polymerization process. The carboxylic acid groups of pristine PPG NFs were deprotonated to form carboxylate groups, resulting in hydrogen-dedoped PPG NFs. The Cu²⁺-adsorption capability of PPG NFs was markedly increased after the deprotonation, presumably due to high ionic attraction feature of carboxylate in dedoped PPG. We further investigated the pH-dependent adsorption capability of PPG NFs and found much higher Cu²⁺ adsorption capacity under high pH conditions, owing to spontaneous deprotonation by the basic solution. X-ray photoemission confirmed the adsorption of Cu²⁺ on PPG NFs, and Fourier transform infrared spectroscopic analyses confirmed the reduced density of carboxylic acid by deprotonation. The ability of pristine and dedoped PPG NFs to capture aqueous Cu²⁺ is discussed. Our method to improve the adsorption capability using surface modification could be readily applied to many other polymeric or organic nanostructures for metal removal.

Original language	English
Pages (from-to)	352-359
Number of pages	8
Journal	Chemical Engineering Journal
Volume	277
DOIs	https://doi.org/10.1016/j.cej.2015.04.120
State	Published - 1 Oct 2015
Externally published	Yes

Keywords

Aqueous copper
Metal adsorption
Nanofiber
Poly-N-phenylglycine
Water purification

Access to Document

10.1016/j.cej.2015.04.120

Cite this

@article{3beecf7f37b34b9badf464fc139c3bff,

title = "Enhanced adsorption of aqueous copper(II) ions using dedoped poly-N-phenylglycine nanofibers",

abstract = "We report on adsorption of aqueous Cu2+ using poly N-phenylglycine (PPG) nanofibers (NFs) prepared by radical polymerization process. The carboxylic acid groups of pristine PPG NFs were deprotonated to form carboxylate groups, resulting in hydrogen-dedoped PPG NFs. The Cu2+-adsorption capability of PPG NFs was markedly increased after the deprotonation, presumably due to high ionic attraction feature of carboxylate in dedoped PPG. We further investigated the pH-dependent adsorption capability of PPG NFs and found much higher Cu2+ adsorption capacity under high pH conditions, owing to spontaneous deprotonation by the basic solution. X-ray photoemission confirmed the adsorption of Cu2+ on PPG NFs, and Fourier transform infrared spectroscopic analyses confirmed the reduced density of carboxylic acid by deprotonation. The ability of pristine and dedoped PPG NFs to capture aqueous Cu2+ is discussed. Our method to improve the adsorption capability using surface modification could be readily applied to many other polymeric or organic nanostructures for metal removal.",

keywords = "Aqueous copper, Metal adsorption, Nanofiber, Poly-N-phenylglycine, Water purification",

author = "Doh, \{Ji Hoon\} and Kim, \{Ji Hyun\} and Kim, \{Hyeong Jin\} and Ali, \{Rana Faryad\} and Koo Shin and Hong, \{Young Joon\}",

note = "Publisher Copyright: {\textcopyright} 2015 Elsevier B.V.",

year = "2015",

month = oct,

day = "1",

doi = "10.1016/j.cej.2015.04.120",

language = "English",

volume = "277",

pages = "352--359",

journal = "Chemical Engineering Journal",

issn = "1385-8947",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - Enhanced adsorption of aqueous copper(II) ions using dedoped poly-N-phenylglycine nanofibers

AU - Doh, Ji Hoon

AU - Kim, Ji Hyun

AU - Kim, Hyeong Jin

AU - Ali, Rana Faryad

AU - Shin, Koo

AU - Hong, Young Joon

PY - 2015/10/1

Y1 - 2015/10/1

N2 - We report on adsorption of aqueous Cu2+ using poly N-phenylglycine (PPG) nanofibers (NFs) prepared by radical polymerization process. The carboxylic acid groups of pristine PPG NFs were deprotonated to form carboxylate groups, resulting in hydrogen-dedoped PPG NFs. The Cu2+-adsorption capability of PPG NFs was markedly increased after the deprotonation, presumably due to high ionic attraction feature of carboxylate in dedoped PPG. We further investigated the pH-dependent adsorption capability of PPG NFs and found much higher Cu2+ adsorption capacity under high pH conditions, owing to spontaneous deprotonation by the basic solution. X-ray photoemission confirmed the adsorption of Cu2+ on PPG NFs, and Fourier transform infrared spectroscopic analyses confirmed the reduced density of carboxylic acid by deprotonation. The ability of pristine and dedoped PPG NFs to capture aqueous Cu2+ is discussed. Our method to improve the adsorption capability using surface modification could be readily applied to many other polymeric or organic nanostructures for metal removal.

AB - We report on adsorption of aqueous Cu2+ using poly N-phenylglycine (PPG) nanofibers (NFs) prepared by radical polymerization process. The carboxylic acid groups of pristine PPG NFs were deprotonated to form carboxylate groups, resulting in hydrogen-dedoped PPG NFs. The Cu2+-adsorption capability of PPG NFs was markedly increased after the deprotonation, presumably due to high ionic attraction feature of carboxylate in dedoped PPG. We further investigated the pH-dependent adsorption capability of PPG NFs and found much higher Cu2+ adsorption capacity under high pH conditions, owing to spontaneous deprotonation by the basic solution. X-ray photoemission confirmed the adsorption of Cu2+ on PPG NFs, and Fourier transform infrared spectroscopic analyses confirmed the reduced density of carboxylic acid by deprotonation. The ability of pristine and dedoped PPG NFs to capture aqueous Cu2+ is discussed. Our method to improve the adsorption capability using surface modification could be readily applied to many other polymeric or organic nanostructures for metal removal.

KW - Aqueous copper

KW - Metal adsorption

KW - Nanofiber

KW - Poly-N-phenylglycine

KW - Water purification

UR - https://www.scopus.com/pages/publications/84929379438

U2 - 10.1016/j.cej.2015.04.120

DO - 10.1016/j.cej.2015.04.120

M3 - Article

AN - SCOPUS:84929379438

SN - 1385-8947

VL - 277

SP - 352

EP - 359

JO - Chemical Engineering Journal

JF - Chemical Engineering Journal

ER -

Enhanced adsorption of aqueous copper(II) ions using dedoped poly-N-phenylglycine nanofibers

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this