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

Research output: Contribution to journalArticle

31 Citations (Scopus)

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 languageEnglish
Pages (from-to)7096-7106
Number of pages11
JournalIndustrial and Engineering Chemistry Research
Volume46
Issue number22
DOIs
Publication statusPublished - 2007 Oct 24
Externally publishedYes

Fingerprint

Multicarrier modulation
Composite films
Silicon Dioxide
silica
Silica
Fabrication
Hydrogen
Sonication
Aluminum Oxide
sieving
Surface-Active Agents
aluminum oxide
Self assembly
surfactant
Corrosion resistance
corrosion
Aluminum alloys
coating
Evaporation
Surface active agents

ASJC Scopus subject areas

  • Polymers and Plastics
  • Environmental Science(all)
  • Chemical Engineering (miscellaneous)

Cite this

Layer-by-layer deposition of barrier and permselective c-oriented-MCM-22/ silica composite films. / Choi, Jungkyu; Lai, Zhiping; Ghosh, Shubhajit; Beving, Derek E.; Yan, Yushan; Tsapatsisst, Michael.

In: Industrial and Engineering Chemistry Research, Vol. 46, No. 22, 24.10.2007, p. 7096-7106.

Research output: Contribution to journalArticle

Choi, Jungkyu ; Lai, Zhiping ; Ghosh, Shubhajit ; Beving, Derek E. ; Yan, Yushan ; Tsapatsisst, Michael. / Layer-by-layer deposition of barrier and permselective c-oriented-MCM-22/ silica composite films. In: Industrial and Engineering Chemistry Research. 2007 ; Vol. 46, No. 22. pp. 7096-7106.
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