TiO                         2                         -pillared magadiite and its arsenic adsorption capacity

Sarah Louise S. Atulba; Jeong Hun Jang; Man Park

doi:10.1007/s10934-018-0713-1

TiO ₂ -pillared magadiite and its arsenic adsorption capacity

Sarah Louise S. Atulba
, Jeong Hun Jang
, Man Park

School of Applied Bioscience

Kyungpook National University

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

9 Scopus citations

Abstract

The structural and chemical interactions of magadiite with TiO ₂ pillars were examined along with arsenic adsorption potential of TiO ₂ -pillared magadiite. The interlayer space of magadiite accommodated TiO ₂ in the form of moieties rather than discrete particles, which led to a slight increase in interlayer distance and consequently a remarkable formation of micropores (a specific surface area of 270 m ² /g). High thermal stability up to 800 °C and increased interlayer space were attributed to the formation of Ti–O–Si bonding (966 cm ⁻¹ ) between interlayered silanol groups and TiO ₂ pillars. TiO ₂ -pillared magadiite removed up to 100% of As(V) from aqueous solution at the initial concentrations of 0.5–1.0 mg L ⁻¹ . These unique structural and textural evolutions of magadiite upon pillaring with TiO ₂ provide new insights to understand the pillaring behaviors of hydrated layered polysilicates and to fabricate pillared materials applicable to arsenate adsorption.

Original language	English
Pages (from-to)	311-318
Number of pages	8
Journal	Journal of Porous Materials
Volume	26
Issue number	1
DOIs	https://doi.org/10.1007/s10934-018-0713-1
State	Published - 15 Feb 2019

Keywords

Arsenate adsorption
Magadiite
Pillaring behavior
Titanium dioxide

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title = " TiO 2 -pillared magadiite and its arsenic adsorption capacity ",

abstract = " The structural and chemical interactions of magadiite with TiO 2 pillars were examined along with arsenic adsorption potential of TiO 2 -pillared magadiite. The interlayer space of magadiite accommodated TiO 2 in the form of moieties rather than discrete particles, which led to a slight increase in interlayer distance and consequently a remarkable formation of micropores (a specific surface area of 270 m 2 /g). High thermal stability up to 800 °C and increased interlayer space were attributed to the formation of Ti–O–Si bonding (966 cm −1 ) between interlayered silanol groups and TiO 2 pillars. TiO 2 -pillared magadiite removed up to 100\% of As(V) from aqueous solution at the initial concentrations of 0.5–1.0 mg L −1 . These unique structural and textural evolutions of magadiite upon pillaring with TiO 2 provide new insights to understand the pillaring behaviors of hydrated layered polysilicates and to fabricate pillared materials applicable to arsenate adsorption.",

keywords = "Arsenate adsorption, Magadiite, Pillaring behavior, Titanium dioxide",

author = "Atulba, \{Sarah Louise S.\} and Jang, \{Jeong Hun\} and Man Park",

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T1 - TiO 2 -pillared magadiite and its arsenic adsorption capacity

AU - Atulba, Sarah Louise S.

AU - Jang, Jeong Hun

AU - Park, Man

PY - 2019/2/15

Y1 - 2019/2/15

N2 - The structural and chemical interactions of magadiite with TiO 2 pillars were examined along with arsenic adsorption potential of TiO 2 -pillared magadiite. The interlayer space of magadiite accommodated TiO 2 in the form of moieties rather than discrete particles, which led to a slight increase in interlayer distance and consequently a remarkable formation of micropores (a specific surface area of 270 m 2 /g). High thermal stability up to 800 °C and increased interlayer space were attributed to the formation of Ti–O–Si bonding (966 cm −1 ) between interlayered silanol groups and TiO 2 pillars. TiO 2 -pillared magadiite removed up to 100% of As(V) from aqueous solution at the initial concentrations of 0.5–1.0 mg L −1 . These unique structural and textural evolutions of magadiite upon pillaring with TiO 2 provide new insights to understand the pillaring behaviors of hydrated layered polysilicates and to fabricate pillared materials applicable to arsenate adsorption.

AB - The structural and chemical interactions of magadiite with TiO 2 pillars were examined along with arsenic adsorption potential of TiO 2 -pillared magadiite. The interlayer space of magadiite accommodated TiO 2 in the form of moieties rather than discrete particles, which led to a slight increase in interlayer distance and consequently a remarkable formation of micropores (a specific surface area of 270 m 2 /g). High thermal stability up to 800 °C and increased interlayer space were attributed to the formation of Ti–O–Si bonding (966 cm −1 ) between interlayered silanol groups and TiO 2 pillars. TiO 2 -pillared magadiite removed up to 100% of As(V) from aqueous solution at the initial concentrations of 0.5–1.0 mg L −1 . These unique structural and textural evolutions of magadiite upon pillaring with TiO 2 provide new insights to understand the pillaring behaviors of hydrated layered polysilicates and to fabricate pillared materials applicable to arsenate adsorption.

KW - Arsenate adsorption

KW - Magadiite

KW - Pillaring behavior

KW - Titanium dioxide

UR - https://www.scopus.com/pages/publications/85059467831

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DO - 10.1007/s10934-018-0713-1

M3 - Article

AN - SCOPUS:85059467831

SN - 1380-2224

VL - 26

SP - 311

EP - 318

JO - Journal of Porous Materials

JF - Journal of Porous Materials

IS - 1

ER -

TiO ₂ -pillared magadiite and its arsenic adsorption capacity

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Keywords

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