Formation mechanism and surface property of exfoliated silica nano-plates

Nguyen H. Tran; Michael A. Wilson; Adriyan S. Milev; Gary R. Dennis; Kamali Kannangara; Lars S. O. Johansson

Formation mechanism and surface property of exfoliated silica nano-plates

Nguyen H. Tran
, Michael A. Wilson
, Adriyan S. Milev
, Gary R. Dennis
, Kamali Kannangara
, Lars S. O. Johansson

School of Science

Research output: Chapter in Book / Conference Paper › Conference Paper

Abstract

The silica nano-plates formed by exfoliation of the synthetic clay Lucentite in the poly(acrylic acid) aqueous solution has been examined using near edge X-ray adsorption fine structure (NEXAFS). Mg K - edge NEXAFS analysis shows that non surface (bulk) Mg ions were not chemically involved in the poly(acrylic acid)/clay intercalation, but were substantially involved in the exfoliation resulting in the silica nano-plates. During intercalation, O K - edge NEXAFS shows structural branches on the plate surfaces were formed. During exfoliation, these increased significantly. Si L 3,2 - edge NEXAFS shows this occurred by migration of SiO 4 groups within the exfoliated silica plates.

Original language	English
Title of host publication	Journal of Physics: Conference Series. Vol. 100, Part 1
Publisher	Institute of Physics
Number of pages	4
Publication status	Published - 2008
Event	International Conference on Nanoscience and Technology - Duration: 1 Jan 2008 → …

Conference

Conference	International Conference on Nanoscience and Technology
Period	1/01/08 → …

Keywords

nanocomposites (materials)
nanotechnology
silica
condensed matter

Cite this

@inproceedings{34607f5d3c25420da085ece0b4c716fc,

title = "Formation mechanism and surface property of exfoliated silica nano-plates",

abstract = "The silica nano-plates formed by exfoliation of the synthetic clay Lucentite in the poly(acrylic acid) aqueous solution has been examined using near edge X-ray adsorption fine structure (NEXAFS). Mg K - edge NEXAFS analysis shows that non surface (bulk) Mg ions were not chemically involved in the poly(acrylic acid)/clay intercalation, but were substantially involved in the exfoliation resulting in the silica nano-plates. During intercalation, O K - edge NEXAFS shows structural branches on the plate surfaces were formed. During exfoliation, these increased significantly. Si L 3,2 - edge NEXAFS shows this occurred by migration of SiO 4 groups within the exfoliated silica plates.",

keywords = "nanocomposites (materials), nanotechnology, silica, condensed matter",

author = "Tran, \{Nguyen H.\} and Wilson, \{Michael A.\} and Milev, \{Adriyan S.\} and Dennis, \{Gary R.\} and Kamali Kannangara and Johansson, \{Lars S. O.\}",

year = "2008",

language = "English",

booktitle = "Journal of Physics: Conference Series. Vol. 100, Part 1",

publisher = "Institute of Physics",

address = "United Kingdom",

note = "International Conference on Nanoscience and Technology ; Conference date: 01-01-2008",

}

TY - GEN

T1 - Formation mechanism and surface property of exfoliated silica nano-plates

AU - Tran, Nguyen H.

AU - Wilson, Michael A.

AU - Milev, Adriyan S.

AU - Dennis, Gary R.

AU - Kannangara, Kamali

AU - Johansson, Lars S. O.

PY - 2008

Y1 - 2008

N2 - The silica nano-plates formed by exfoliation of the synthetic clay Lucentite in the poly(acrylic acid) aqueous solution has been examined using near edge X-ray adsorption fine structure (NEXAFS). Mg K - edge NEXAFS analysis shows that non surface (bulk) Mg ions were not chemically involved in the poly(acrylic acid)/clay intercalation, but were substantially involved in the exfoliation resulting in the silica nano-plates. During intercalation, O K - edge NEXAFS shows structural branches on the plate surfaces were formed. During exfoliation, these increased significantly. Si L 3,2 - edge NEXAFS shows this occurred by migration of SiO 4 groups within the exfoliated silica plates.

AB - The silica nano-plates formed by exfoliation of the synthetic clay Lucentite in the poly(acrylic acid) aqueous solution has been examined using near edge X-ray adsorption fine structure (NEXAFS). Mg K - edge NEXAFS analysis shows that non surface (bulk) Mg ions were not chemically involved in the poly(acrylic acid)/clay intercalation, but were substantially involved in the exfoliation resulting in the silica nano-plates. During intercalation, O K - edge NEXAFS shows structural branches on the plate surfaces were formed. During exfoliation, these increased significantly. Si L 3,2 - edge NEXAFS shows this occurred by migration of SiO 4 groups within the exfoliated silica plates.

KW - nanocomposites (materials)

KW - nanotechnology

KW - silica

KW - condensed matter

UR - http://handle.uws.edu.au:8081/1959.7/45134

M3 - Conference Paper

BT - Journal of Physics: Conference Series. Vol. 100, Part 1

PB - Institute of Physics

T2 - International Conference on Nanoscience and Technology

Y2 - 1 January 2008

ER -

Formation mechanism and surface property of exfoliated silica nano-plates

Abstract

Conference

Keywords

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