Facile fabrication of Poly(vinyl alcohol)/Silica composites for removal of Hg(II) from water

Somit Kumar Singh; Kyong Yop Rhee; Seul Yi Lee; Soo Jin Park

doi:10.1007/s13233-015-3010-8

Facile fabrication of Poly(vinyl alcohol)/Silica composites for removal of Hg(II) from water

Somit Kumar Singh, Kyong Yop Rhee, Seul Yi Lee, Soo Jin Park

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

Abstract

A low-cost and environment friendly route towards the synthesis of poly(vinyl alcohol)/silica composites is presented. The silica-based composites were synthesized by hydrolytic and dehydroxylation polymerization of a silica precursor, tetrakis(2-hydroxyethyl)orthosilicate by sol-gel method within a poly(vinyl alcohol) matrix. Calcination of the composites at 300℃ resulted in mesoporous silica that exhibited excellent Hg(II) adsorption at pH 6.5, and the materials were characterized using FTIR, XRD, TGA-DTA, and SEM analyses. The adsorption data best fitted the Langmuir isotherm; Q_max for the adsorbent was 113.63 mg·g^-1. The adsorption followed pseudo-second-order kinetics with a rate constant of 6.16×10^-4 g·mg^-1·min^-1. The biocompatibility feature of the synthesized adsorbent materials makes it a potential candidate for biological applications such as enzyme immobilization, opto-electronics, and sensors.[Figure not available: see fulltext.]

Original language	English
Pages (from-to)	21-29
Number of pages	9
Journal	Macromolecular Research
Volume	23
Issue number	1
DOIs	https://doi.org/10.1007/s13233-015-3010-8
Publication status	Published - 1 Jan 2015
Externally published	Yes

Keywords

Hg(II) removal
poly(vinyl alcohol)
silica

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10.1007/s13233-015-3010-8

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title = "Facile fabrication of Poly(vinyl alcohol)/Silica composites for removal of Hg(II) from water",

abstract = "A low-cost and environment friendly route towards the synthesis of poly(vinyl alcohol)/silica composites is presented. The silica-based composites were synthesized by hydrolytic and dehydroxylation polymerization of a silica precursor, tetrakis(2-hydroxyethyl)orthosilicate by sol-gel method within a poly(vinyl alcohol) matrix. Calcination of the composites at 300℃ resulted in mesoporous silica that exhibited excellent Hg(II) adsorption at pH 6.5, and the materials were characterized using FTIR, XRD, TGA-DTA, and SEM analyses. The adsorption data best fitted the Langmuir isotherm; Qmax for the adsorbent was 113.63 mg·g-1. The adsorption followed pseudo-second-order kinetics with a rate constant of 6.16×10-4 g·mg-1·min-1. The biocompatibility feature of the synthesized adsorbent materials makes it a potential candidate for biological applications such as enzyme immobilization, opto-electronics, and sensors.[Figure not available: see fulltext.]",

keywords = "Hg(II) removal, poly(vinyl alcohol), silica",

author = "Singh, \{Somit Kumar\} and Rhee, \{Kyong Yop\} and Lee, \{Seul Yi\} and Park, \{Soo Jin\}",

note = "Publisher Copyright: {\textcopyright} 2015, The Polymer Society of Korea and Springer Sciene+Business Media Dordrecht.",

year = "2015",

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doi = "10.1007/s13233-015-3010-8",

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T1 - Facile fabrication of Poly(vinyl alcohol)/Silica composites for removal of Hg(II) from water

AU - Singh, Somit Kumar

AU - Rhee, Kyong Yop

AU - Lee, Seul Yi

AU - Park, Soo Jin

PY - 2015/1/1

Y1 - 2015/1/1

N2 - A low-cost and environment friendly route towards the synthesis of poly(vinyl alcohol)/silica composites is presented. The silica-based composites were synthesized by hydrolytic and dehydroxylation polymerization of a silica precursor, tetrakis(2-hydroxyethyl)orthosilicate by sol-gel method within a poly(vinyl alcohol) matrix. Calcination of the composites at 300℃ resulted in mesoporous silica that exhibited excellent Hg(II) adsorption at pH 6.5, and the materials were characterized using FTIR, XRD, TGA-DTA, and SEM analyses. The adsorption data best fitted the Langmuir isotherm; Qmax for the adsorbent was 113.63 mg·g-1. The adsorption followed pseudo-second-order kinetics with a rate constant of 6.16×10-4 g·mg-1·min-1. The biocompatibility feature of the synthesized adsorbent materials makes it a potential candidate for biological applications such as enzyme immobilization, opto-electronics, and sensors.[Figure not available: see fulltext.]

AB - A low-cost and environment friendly route towards the synthesis of poly(vinyl alcohol)/silica composites is presented. The silica-based composites were synthesized by hydrolytic and dehydroxylation polymerization of a silica precursor, tetrakis(2-hydroxyethyl)orthosilicate by sol-gel method within a poly(vinyl alcohol) matrix. Calcination of the composites at 300℃ resulted in mesoporous silica that exhibited excellent Hg(II) adsorption at pH 6.5, and the materials were characterized using FTIR, XRD, TGA-DTA, and SEM analyses. The adsorption data best fitted the Langmuir isotherm; Qmax for the adsorbent was 113.63 mg·g-1. The adsorption followed pseudo-second-order kinetics with a rate constant of 6.16×10-4 g·mg-1·min-1. The biocompatibility feature of the synthesized adsorbent materials makes it a potential candidate for biological applications such as enzyme immobilization, opto-electronics, and sensors.[Figure not available: see fulltext.]

KW - Hg(II) removal

KW - poly(vinyl alcohol)

KW - silica

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JO - Macromolecular Research

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IS - 1

ER -

Facile fabrication of Poly(vinyl alcohol)/Silica composites for removal of Hg(II) from water

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Keywords

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