Thiol-modified cellulose nanofibrous composite membranes for chromium (VI) and lead (II) adsorption

Rui Yang; Katherine B. Aubrecht; Hongyang Ma; Ran Wang; Robert B. Grubbs; Benjamin S. Hsiao; Benjamin Chu

doi:10.1016/j.polymer.2014.01.043

Thiol-modified cellulose nanofibrous composite membranes for chromium (VI) and lead (II) adsorption

Rui Yang
, Katherine B. Aubrecht
, Hongyang Ma
, Ran Wang
, Robert B. Grubbs
, Benjamin S. Hsiao
, Benjamin Chu

Chemistry

Stony Brook University

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

244 Scopus citations

Abstract

Oxidized cellulose nanofibers (CNF), embedded in an electrospun polyacrylonitrile (PAN) nanofibrous scaffold, were grafted with cysteine to increase the adsorption capability for chromium (VI) and lead (II). Thiol-modified cellulose nanofibers (m-CNF) were characterized by titration, FT-IR, energy dispersive spectroscopy (EDS) and SEM techniques. Static and dynamic Cr(VI) and Pb(II) adsorption studies of m-CNF nanofibrous composite membranes were carried out as a function of pH and of contact time. The results indicated these membranes exhibited high adsorption capacities for both Cr(VI) (87.5 mg/g) and Pb(II) (137.7 mg/g) due to the large surface area and high concentration of thiol groups (0.9 mmol of-SH/gram m-CNF). The morphology and property of m-CNF nanofibrous composite membranes was found to be stable, and they could be used and regenerated multiple times with high recovery efficiency.

Original language	English
Pages (from-to)	1167-1176
Number of pages	10
Journal	Polymer
Volume	55
Issue number	5
DOIs	https://doi.org/10.1016/j.polymer.2014.01.043
State	Published - Mar 10 2014

Keywords

Cellulose nanofiber
Heavy metal ions removal
Thiol-modification

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10.1016/j.polymer.2014.01.043

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@article{d03cfc32cfc8474c9c37ae926964320d,

title = "Thiol-modified cellulose nanofibrous composite membranes for chromium (VI) and lead (II) adsorption",

abstract = "Oxidized cellulose nanofibers (CNF), embedded in an electrospun polyacrylonitrile (PAN) nanofibrous scaffold, were grafted with cysteine to increase the adsorption capability for chromium (VI) and lead (II). Thiol-modified cellulose nanofibers (m-CNF) were characterized by titration, FT-IR, energy dispersive spectroscopy (EDS) and SEM techniques. Static and dynamic Cr(VI) and Pb(II) adsorption studies of m-CNF nanofibrous composite membranes were carried out as a function of pH and of contact time. The results indicated these membranes exhibited high adsorption capacities for both Cr(VI) (87.5 mg/g) and Pb(II) (137.7 mg/g) due to the large surface area and high concentration of thiol groups (0.9 mmol of-SH/gram m-CNF). The morphology and property of m-CNF nanofibrous composite membranes was found to be stable, and they could be used and regenerated multiple times with high recovery efficiency.",

keywords = "Cellulose nanofiber, Heavy metal ions removal, Thiol-modification",

author = "Rui Yang and Aubrecht, \{Katherine B.\} and Hongyang Ma and Ran Wang and Grubbs, \{Robert B.\} and Hsiao, \{Benjamin S.\} and Benjamin Chu",

year = "2014",

month = mar,

day = "10",

doi = "10.1016/j.polymer.2014.01.043",

language = "English",

volume = "55",

pages = "1167--1176",

journal = "Polymer",

issn = "0032-3861",

number = "5",

}

TY - JOUR

T1 - Thiol-modified cellulose nanofibrous composite membranes for chromium (VI) and lead (II) adsorption

AU - Yang, Rui

AU - Aubrecht, Katherine B.

AU - Ma, Hongyang

AU - Wang, Ran

AU - Grubbs, Robert B.

AU - Hsiao, Benjamin S.

AU - Chu, Benjamin

PY - 2014/3/10

Y1 - 2014/3/10

N2 - Oxidized cellulose nanofibers (CNF), embedded in an electrospun polyacrylonitrile (PAN) nanofibrous scaffold, were grafted with cysteine to increase the adsorption capability for chromium (VI) and lead (II). Thiol-modified cellulose nanofibers (m-CNF) were characterized by titration, FT-IR, energy dispersive spectroscopy (EDS) and SEM techniques. Static and dynamic Cr(VI) and Pb(II) adsorption studies of m-CNF nanofibrous composite membranes were carried out as a function of pH and of contact time. The results indicated these membranes exhibited high adsorption capacities for both Cr(VI) (87.5 mg/g) and Pb(II) (137.7 mg/g) due to the large surface area and high concentration of thiol groups (0.9 mmol of-SH/gram m-CNF). The morphology and property of m-CNF nanofibrous composite membranes was found to be stable, and they could be used and regenerated multiple times with high recovery efficiency.

AB - Oxidized cellulose nanofibers (CNF), embedded in an electrospun polyacrylonitrile (PAN) nanofibrous scaffold, were grafted with cysteine to increase the adsorption capability for chromium (VI) and lead (II). Thiol-modified cellulose nanofibers (m-CNF) were characterized by titration, FT-IR, energy dispersive spectroscopy (EDS) and SEM techniques. Static and dynamic Cr(VI) and Pb(II) adsorption studies of m-CNF nanofibrous composite membranes were carried out as a function of pH and of contact time. The results indicated these membranes exhibited high adsorption capacities for both Cr(VI) (87.5 mg/g) and Pb(II) (137.7 mg/g) due to the large surface area and high concentration of thiol groups (0.9 mmol of-SH/gram m-CNF). The morphology and property of m-CNF nanofibrous composite membranes was found to be stable, and they could be used and regenerated multiple times with high recovery efficiency.

KW - Cellulose nanofiber

KW - Heavy metal ions removal

KW - Thiol-modification

UR - https://www.scopus.com/pages/publications/84896717544

U2 - 10.1016/j.polymer.2014.01.043

DO - 10.1016/j.polymer.2014.01.043

M3 - Article

AN - SCOPUS:84896717544

SN - 0032-3861

VL - 55

SP - 1167

EP - 1176

JO - Polymer

JF - Polymer

IS - 5

ER -

Thiol-modified cellulose nanofibrous composite membranes for chromium (VI) and lead (II) adsorption

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Keywords

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