Continuous c-oriented AlPO4-5 films by tertiary growth

Georgios N. Karanikolos, James W. Wydra, Jared A. Stoeger, Hermenegildo García, Avelino Corma, Michael Tsapatsis

Research output: Contribution to journalArticlepeer-review

44 Scopus citations

Abstract

c-Oriented AlPO4-5 films were synthesized by seeded growth on silicon substrates. Secondary hydrothermal treatment of the seeded substrates under conditions that favor c-out-of-plane growth yielded non-intergrown, highly oriented columnar crystals with a length of 7 μm. Modifying the conditions so that in-plane growth is favored and executing yet another ("tertiary") growth, the crystals obtained by secondary treatment were grown in-plane, along the a-, b-directions, filling the gaps between the columnar grains and yielding well-intergrown, highly oriented, continuous AlPO4-5 films. The oriented films obtained by the technique presented here can be potentially useful for separations and catalysis as well as electronic and electrochemical applications.

Original languageEnglish (US)
Pages (from-to)792-797
Number of pages6
JournalChemistry of Materials
Volume19
Issue number4
DOIs
StatePublished - Feb 20 2007

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