Improved photocatalytic activity and adsorption ability of mesoporous potassium-intercalated layered titanate

Tae Woo Kim; In Young Kim; Jeong Hyeok Im; Hyung Wook Ha; Seong Ju Hwang

doi:10.1016/j.jphotochem.2009.04.025

Improved photocatalytic activity and adsorption ability of mesoporous potassium-intercalated layered titanate

Tae Woo Kim, In Young Kim, Jeong Hyeok Im, Hyung Wook Ha, Seong Ju Hwang

Department of Chemistry & Nanoscience

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

19 Scopus citations

Abstract

Mesoporous potassium-intercalated layered titanate has been synthesized through a reassembling of exfoliated titanate nanosheets and potassium cations. According to powder X-ray diffraction, electron microscopy, and N₂ adsorption-desorption isotherm analyses, the intercalation of potassium ions gave rise not only to a slight basal expansion of the layered titanate but also to the formation of mesoporous assembly of the layered crystallites. In comparison with the pristine cesium titanate and its protonated derivative, the mesoporous potassium-intercalated titanate showed better photocatalytic activity for the photodegradation of organic molecules and higher adsorption capability for organic dye and CO₂ molecules, as well.

Original language	English
Pages (from-to)	173-178
Number of pages	6
Journal	Journal of Photochemistry and Photobiology A: Chemistry
Volume	205
Issue number	2-3
DOIs	https://doi.org/10.1016/j.jphotochem.2009.04.025
State	Published - 25 Jun 2009

Bibliographical note

Funding Information:
This work is the outcome of a Manpower Development Program for Energy & Resources supported by the Ministry of Knowledge and Economy (MKE) and partly supported by the SRC/ERC program of the MOST/KOSEF (grant: R11-2005-008-03002-0).

Keywords

Adsorption
Exfoliation-reassembling
Intercalation
Mesoporous assembly
Photocatalysis

Cite this

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title = "Improved photocatalytic activity and adsorption ability of mesoporous potassium-intercalated layered titanate",

abstract = "Mesoporous potassium-intercalated layered titanate has been synthesized through a reassembling of exfoliated titanate nanosheets and potassium cations. According to powder X-ray diffraction, electron microscopy, and N2 adsorption-desorption isotherm analyses, the intercalation of potassium ions gave rise not only to a slight basal expansion of the layered titanate but also to the formation of mesoporous assembly of the layered crystallites. In comparison with the pristine cesium titanate and its protonated derivative, the mesoporous potassium-intercalated titanate showed better photocatalytic activity for the photodegradation of organic molecules and higher adsorption capability for organic dye and CO2 molecules, as well.",

keywords = "Adsorption, Exfoliation-reassembling, Intercalation, Mesoporous assembly, Photocatalysis",

author = "Kim, {Tae Woo} and Kim, {In Young} and Im, {Jeong Hyeok} and Ha, {Hyung Wook} and Hwang, {Seong Ju}",

note = "Funding Information: This work is the outcome of a Manpower Development Program for Energy & Resources supported by the Ministry of Knowledge and Economy (MKE) and partly supported by the SRC/ERC program of the MOST/KOSEF (grant: R11-2005-008-03002-0).",

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AU - Kim, Tae Woo

AU - Kim, In Young

AU - Im, Jeong Hyeok

AU - Ha, Hyung Wook

AU - Hwang, Seong Ju

N1 - Funding Information: This work is the outcome of a Manpower Development Program for Energy & Resources supported by the Ministry of Knowledge and Economy (MKE) and partly supported by the SRC/ERC program of the MOST/KOSEF (grant: R11-2005-008-03002-0).

PY - 2009/6/25

Y1 - 2009/6/25

N2 - Mesoporous potassium-intercalated layered titanate has been synthesized through a reassembling of exfoliated titanate nanosheets and potassium cations. According to powder X-ray diffraction, electron microscopy, and N2 adsorption-desorption isotherm analyses, the intercalation of potassium ions gave rise not only to a slight basal expansion of the layered titanate but also to the formation of mesoporous assembly of the layered crystallites. In comparison with the pristine cesium titanate and its protonated derivative, the mesoporous potassium-intercalated titanate showed better photocatalytic activity for the photodegradation of organic molecules and higher adsorption capability for organic dye and CO2 molecules, as well.

AB - Mesoporous potassium-intercalated layered titanate has been synthesized through a reassembling of exfoliated titanate nanosheets and potassium cations. According to powder X-ray diffraction, electron microscopy, and N2 adsorption-desorption isotherm analyses, the intercalation of potassium ions gave rise not only to a slight basal expansion of the layered titanate but also to the formation of mesoporous assembly of the layered crystallites. In comparison with the pristine cesium titanate and its protonated derivative, the mesoporous potassium-intercalated titanate showed better photocatalytic activity for the photodegradation of organic molecules and higher adsorption capability for organic dye and CO2 molecules, as well.

KW - Adsorption

KW - Exfoliation-reassembling

KW - Intercalation

KW - Mesoporous assembly

KW - Photocatalysis

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U2 - 10.1016/j.jphotochem.2009.04.025

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AN - SCOPUS:67649295305

SN - 1010-6030

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JO - Journal of Photochemistry and Photobiology A: Chemistry

JF - Journal of Photochemistry and Photobiology A: Chemistry

IS - 2-3

ER -

Improved photocatalytic activity and adsorption ability of mesoporous potassium-intercalated layered titanate

Abstract

Bibliographical note

Keywords

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Cite this