Layer-by-layer deposition of barrier and permselective c-oriented-MCM-22/ silica composite films

Jungkyu Choi; Zhiping Lai; Shubhajit Ghosh; Derek E. Beving; Yushan Yan; Michael Tsapatsisst

doi:10.1021/ie0706156

Layer-by-layer deposition of barrier and permselective c-oriented-MCM-22/ silica composite films

Jungkyu Choi, Zhiping Lai, Shubhajit Ghosh, Derek E. Beving, Yushan Yan, Michael Tsapatsisst^*

^*Corresponding author for this work

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

37 Scopus citations

Abstract

A layer-by-layer deposition method is presented for the fabrication of compact c-oriented-MCM-22/silica films on aluminum alloys and porous α-alumina discs. The film fabrication procedure combines deposition of platelike MCM-22 crystals on substrates by covalent attachment under reflux and/or by sonication-assisted covalent attachment (using the methods introduced by Yoon and co-workers and recently reviewed [Ace. Chem. Res. 2007, 40 (1), 29-40]) with evaporation-induced-self-assembly (EISA) of surfactant-templated silica. The composite c-oriented MCM-22/silica films exhibited corrosion resistance barrier properties comparable to commercial chromáte conversion coatings. Moreover, they exhibited hydrogen ideal selectivities (e.g., H ₂/N ₂ ∼7) above those expected by Knudsen diffusion indicating molecular sieving potential.

Original language	English (US)
Pages (from-to)	7096-7106
Number of pages	11
Journal	Industrial and Engineering Chemistry Research
Volume	46
Issue number	22
DOIs	https://doi.org/10.1021/ie0706156
State	Published - Oct 24 2007
Externally published	Yes

ASJC Scopus subject areas

General Chemistry
General Chemical Engineering
Industrial and Manufacturing Engineering

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title = "Layer-by-layer deposition of barrier and permselective c-oriented-MCM-22/ silica composite films",

abstract = "A layer-by-layer deposition method is presented for the fabrication of compact c-oriented-MCM-22/silica films on aluminum alloys and porous α-alumina discs. The film fabrication procedure combines deposition of platelike MCM-22 crystals on substrates by covalent attachment under reflux and/or by sonication-assisted covalent attachment (using the methods introduced by Yoon and co-workers and recently reviewed [Ace. Chem. Res. 2007, 40 (1), 29-40]) with evaporation-induced-self-assembly (EISA) of surfactant-templated silica. The composite c-oriented MCM-22/silica films exhibited corrosion resistance barrier properties comparable to commercial chrom{\'a}te conversion coatings. Moreover, they exhibited hydrogen ideal selectivities (e.g., H 2/N 2 ∼7) above those expected by Knudsen diffusion indicating molecular sieving potential.",

author = "Jungkyu Choi and Zhiping Lai and Shubhajit Ghosh and Beving, {Derek E.} and Yushan Yan and Michael Tsapatsisst",

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T1 - Layer-by-layer deposition of barrier and permselective c-oriented-MCM-22/ silica composite films

AU - Choi, Jungkyu

AU - Lai, Zhiping

AU - Ghosh, Shubhajit

AU - Beving, Derek E.

AU - Yan, Yushan

AU - Tsapatsisst, Michael

PY - 2007/10/24

Y1 - 2007/10/24

N2 - A layer-by-layer deposition method is presented for the fabrication of compact c-oriented-MCM-22/silica films on aluminum alloys and porous α-alumina discs. The film fabrication procedure combines deposition of platelike MCM-22 crystals on substrates by covalent attachment under reflux and/or by sonication-assisted covalent attachment (using the methods introduced by Yoon and co-workers and recently reviewed [Ace. Chem. Res. 2007, 40 (1), 29-40]) with evaporation-induced-self-assembly (EISA) of surfactant-templated silica. The composite c-oriented MCM-22/silica films exhibited corrosion resistance barrier properties comparable to commercial chromáte conversion coatings. Moreover, they exhibited hydrogen ideal selectivities (e.g., H 2/N 2 ∼7) above those expected by Knudsen diffusion indicating molecular sieving potential.

AB - A layer-by-layer deposition method is presented for the fabrication of compact c-oriented-MCM-22/silica films on aluminum alloys and porous α-alumina discs. The film fabrication procedure combines deposition of platelike MCM-22 crystals on substrates by covalent attachment under reflux and/or by sonication-assisted covalent attachment (using the methods introduced by Yoon and co-workers and recently reviewed [Ace. Chem. Res. 2007, 40 (1), 29-40]) with evaporation-induced-self-assembly (EISA) of surfactant-templated silica. The composite c-oriented MCM-22/silica films exhibited corrosion resistance barrier properties comparable to commercial chromáte conversion coatings. Moreover, they exhibited hydrogen ideal selectivities (e.g., H 2/N 2 ∼7) above those expected by Knudsen diffusion indicating molecular sieving potential.

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Layer-by-layer deposition of barrier and permselective c-oriented-MCM-22/ silica composite films

Abstract

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