Poly(acryloyl hydrazide)-grafted cellulose nanocrystal adsorbents with an excellent Cr(VI) adsorption capacity

Sang Hee Park; Seung Su Shin; Chan Hyung Park; Sungkwon Jeon; Jaegyoung Gwon; Sun Young Lee; Sung Jun Kim; Hyung Ju Kim; Jung Hyun Lee

doi:10.1016/j.jhazmat.2020.122512

Poly(acryloyl hydrazide)-grafted cellulose nanocrystal adsorbents with an excellent Cr(VI) adsorption capacity

Sang Hee Park, Seung Su Shin, Chan Hyung Park, Sungkwon Jeon, Jaegyoung Gwon, Sun Young Lee, Sung Jun Kim, Hyung Ju Kim, Jung Hyun Lee

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

91 Citations (Scopus)

Abstract

In this study, we prepared poly(acryloyl hydrazide) (PAH)-grafted cellulose nanocrystal (CNC-PAH) particles via the atom transfer radical polymerization method for application to Cr(VI) adsorption. The closely-packed PAH chains grafted on the cellulose nanocrystal (CNC) surface provide a high density of amine groups that can adsorb Cr(VI) through strong electrostatic, hydrogen bonding and chelating interactions. CNC-PAH exhibited the optimum Cr(VI) adsorption capacity at the solution pH = 3, where its electrostatic attraction with Cr(VI) was maximized. Cr(VI) was chemisorbed in CNC-PAH by following the Langmuir isotherm mechanism (homogeneous monolayer adsorption). The Cr(VI) adsorption kinetics of CNC-PAH was controlled predominantly by intra-particle diffusion resistance imparted by the PAH shell layer. Thermodynamic analysis revealed that Cr(VI) adsorption of CNC-PAH is a spontaneous and endothermic process. Importantly, CNC-PAH grafted with the higher M_w (∼50 kg mol⁻¹) PAH exhibited a rapid Cr(VI) adsorption rate and remarkably high Cr(VI) adsorption capacity (∼457.6 mg g^-1 at 298.15 K), exceeding those of previously reported adsorbents owing to its numerous Cr(VI)-adsorptive amine groups provided by the closely-packed grafted PAH polymers. Furthermore, CNC-PAH showed excellent reusability to maintain its high adsorption ability during repeated adsorption–desorption cycles owing to the covalently binding nature of the PAH polymers.

Original language	English
Article number	122512
Journal	Journal of hazardous materials
Volume	394
DOIs	https://doi.org/10.1016/j.jhazmat.2020.122512
Publication status	Published - 2020 Jul 15

Bibliographical note

Funding Information:
This research was supported by the National Institute of Forest Science (Grant No.: FP0400-2016-01 ) and the National Research Foundation of Korea (NRF) grant funded by the Korean government (Grant No.: 2019R1A2C1002333 , 2019M3E6A1064103 and 2018R1A4A1022194 ).

Publisher Copyright:
© 2020 Elsevier B.V.

Keywords

Adsorbents
Atom transfer radical polymerization
Cellulose nanocrystal
Cr(VI) removal

ASJC Scopus subject areas

Environmental Engineering
Environmental Chemistry
Waste Management and Disposal
Pollution
Health, Toxicology and Mutagenesis

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10.1016/j.jhazmat.2020.122512

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@article{18876f5dcee04617b4de799ce2e7990c,

title = "Poly(acryloyl hydrazide)-grafted cellulose nanocrystal adsorbents with an excellent Cr(VI) adsorption capacity",

abstract = "In this study, we prepared poly(acryloyl hydrazide) (PAH)-grafted cellulose nanocrystal (CNC-PAH) particles via the atom transfer radical polymerization method for application to Cr(VI) adsorption. The closely-packed PAH chains grafted on the cellulose nanocrystal (CNC) surface provide a high density of amine groups that can adsorb Cr(VI) through strong electrostatic, hydrogen bonding and chelating interactions. CNC-PAH exhibited the optimum Cr(VI) adsorption capacity at the solution pH = 3, where its electrostatic attraction with Cr(VI) was maximized. Cr(VI) was chemisorbed in CNC-PAH by following the Langmuir isotherm mechanism (homogeneous monolayer adsorption). The Cr(VI) adsorption kinetics of CNC-PAH was controlled predominantly by intra-particle diffusion resistance imparted by the PAH shell layer. Thermodynamic analysis revealed that Cr(VI) adsorption of CNC-PAH is a spontaneous and endothermic process. Importantly, CNC-PAH grafted with the higher Mw (∼50 kg mol−1) PAH exhibited a rapid Cr(VI) adsorption rate and remarkably high Cr(VI) adsorption capacity (∼457.6 mg g-1 at 298.15 K), exceeding those of previously reported adsorbents owing to its numerous Cr(VI)-adsorptive amine groups provided by the closely-packed grafted PAH polymers. Furthermore, CNC-PAH showed excellent reusability to maintain its high adsorption ability during repeated adsorption–desorption cycles owing to the covalently binding nature of the PAH polymers.",

keywords = "Adsorbents, Atom transfer radical polymerization, Cellulose nanocrystal, Cr(VI) removal",

author = "Park, {Sang Hee} and Shin, {Seung Su} and Park, {Chan Hyung} and Sungkwon Jeon and Jaegyoung Gwon and Lee, {Sun Young} and Kim, {Sung Jun} and Kim, {Hyung Ju} and Lee, {Jung Hyun}",

note = "Funding Information: This research was supported by the National Institute of Forest Science (Grant No.: FP0400-2016-01 ) and the National Research Foundation of Korea (NRF) grant funded by the Korean government (Grant No.: 2019R1A2C1002333 , 2019M3E6A1064103 and 2018R1A4A1022194 ). Publisher Copyright: {\textcopyright} 2020 Elsevier B.V.",

year = "2020",

month = jul,

day = "15",

doi = "10.1016/j.jhazmat.2020.122512",

language = "English",

volume = "394",

journal = "Journal of hazardous materials",

issn = "0304-3894",

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TY - JOUR

T1 - Poly(acryloyl hydrazide)-grafted cellulose nanocrystal adsorbents with an excellent Cr(VI) adsorption capacity

AU - Park, Sang Hee

AU - Shin, Seung Su

AU - Park, Chan Hyung

AU - Jeon, Sungkwon

AU - Gwon, Jaegyoung

AU - Lee, Sun Young

AU - Kim, Sung Jun

AU - Kim, Hyung Ju

AU - Lee, Jung Hyun

N1 - Funding Information: This research was supported by the National Institute of Forest Science (Grant No.: FP0400-2016-01 ) and the National Research Foundation of Korea (NRF) grant funded by the Korean government (Grant No.: 2019R1A2C1002333 , 2019M3E6A1064103 and 2018R1A4A1022194 ). Publisher Copyright: © 2020 Elsevier B.V.

PY - 2020/7/15

Y1 - 2020/7/15

N2 - In this study, we prepared poly(acryloyl hydrazide) (PAH)-grafted cellulose nanocrystal (CNC-PAH) particles via the atom transfer radical polymerization method for application to Cr(VI) adsorption. The closely-packed PAH chains grafted on the cellulose nanocrystal (CNC) surface provide a high density of amine groups that can adsorb Cr(VI) through strong electrostatic, hydrogen bonding and chelating interactions. CNC-PAH exhibited the optimum Cr(VI) adsorption capacity at the solution pH = 3, where its electrostatic attraction with Cr(VI) was maximized. Cr(VI) was chemisorbed in CNC-PAH by following the Langmuir isotherm mechanism (homogeneous monolayer adsorption). The Cr(VI) adsorption kinetics of CNC-PAH was controlled predominantly by intra-particle diffusion resistance imparted by the PAH shell layer. Thermodynamic analysis revealed that Cr(VI) adsorption of CNC-PAH is a spontaneous and endothermic process. Importantly, CNC-PAH grafted with the higher Mw (∼50 kg mol−1) PAH exhibited a rapid Cr(VI) adsorption rate and remarkably high Cr(VI) adsorption capacity (∼457.6 mg g-1 at 298.15 K), exceeding those of previously reported adsorbents owing to its numerous Cr(VI)-adsorptive amine groups provided by the closely-packed grafted PAH polymers. Furthermore, CNC-PAH showed excellent reusability to maintain its high adsorption ability during repeated adsorption–desorption cycles owing to the covalently binding nature of the PAH polymers.

AB - In this study, we prepared poly(acryloyl hydrazide) (PAH)-grafted cellulose nanocrystal (CNC-PAH) particles via the atom transfer radical polymerization method for application to Cr(VI) adsorption. The closely-packed PAH chains grafted on the cellulose nanocrystal (CNC) surface provide a high density of amine groups that can adsorb Cr(VI) through strong electrostatic, hydrogen bonding and chelating interactions. CNC-PAH exhibited the optimum Cr(VI) adsorption capacity at the solution pH = 3, where its electrostatic attraction with Cr(VI) was maximized. Cr(VI) was chemisorbed in CNC-PAH by following the Langmuir isotherm mechanism (homogeneous monolayer adsorption). The Cr(VI) adsorption kinetics of CNC-PAH was controlled predominantly by intra-particle diffusion resistance imparted by the PAH shell layer. Thermodynamic analysis revealed that Cr(VI) adsorption of CNC-PAH is a spontaneous and endothermic process. Importantly, CNC-PAH grafted with the higher Mw (∼50 kg mol−1) PAH exhibited a rapid Cr(VI) adsorption rate and remarkably high Cr(VI) adsorption capacity (∼457.6 mg g-1 at 298.15 K), exceeding those of previously reported adsorbents owing to its numerous Cr(VI)-adsorptive amine groups provided by the closely-packed grafted PAH polymers. Furthermore, CNC-PAH showed excellent reusability to maintain its high adsorption ability during repeated adsorption–desorption cycles owing to the covalently binding nature of the PAH polymers.

KW - Adsorbents

KW - Atom transfer radical polymerization

KW - Cellulose nanocrystal

KW - Cr(VI) removal

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U2 - 10.1016/j.jhazmat.2020.122512

DO - 10.1016/j.jhazmat.2020.122512

M3 - Article

C2 - 32200239

AN - SCOPUS:85081646321

SN - 0304-3894

VL - 394

JO - Journal of hazardous materials

JF - Journal of hazardous materials

M1 - 122512

ER -

Poly(acryloyl hydrazide)-grafted cellulose nanocrystal adsorbents with an excellent Cr(VI) adsorption capacity

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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