Catalytically Active Silicon Oxide Nanoclusters Stabilized in a Metal-Organic Framework

Martino Rimoldi, Leighanne C. Gallington, Karena W. Chapman, Keith Macrenaris, Joseph T Hupp, Omar K. Farha

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Post-synthetic modification of the zirconium-based metal-organic framework (MOF) NU-1000 by atomic layer deposition (ALD), using tetramethoxysilane (Si(OMe)4) as a precursor, led to the incorporation and stabilization of silicon oxide clusters composed of only a few silicon atoms in the framework's pores. The resulting SiOx functionalized material (Si-NU-1000) was found to be catalytically active despite the inactivity of related bulk silicon dioxide (SiO2), thus demonstrating the positive effects of having nanosized clusters of SiOx. Moreover, Si-NU-1000 showed activity greater than that found for aluminum oxide based catalysts-oxides known for their high acidity-such as an aluminum oxide functionalized MOF (Al-NU-1000) and bulk γ-Al2O3. X-ray photoelectron spectroscopy and infrared spectroscopy measurements unmasked the electron donating nature of Si-NU-1000, explaining the unusual electronic properties of the nanosized SiOx clusters and supporting their high catalytic activity.

Original languageEnglish
JournalChemistry - A European Journal
DOIs
Publication statusAccepted/In press - 2017

Fingerprint

Aluminum Oxide
Nanoclusters
Silicon oxides
Metals
Oxides
Atomic layer deposition
Silicon
Acidity
Silicon Dioxide
Electronic properties
Aluminum
Infrared spectroscopy
Catalyst activity
X ray photoelectron spectroscopy
Stabilization
Zirconium
Atoms
Catalysts
Electrons
Silica

Keywords

  • Atomic layer deposition
  • Gas flow catalysis
  • Metal-organic frameworks
  • Nanocluster
  • Silicon oxide

ASJC Scopus subject areas

  • Chemistry(all)

Cite this

Catalytically Active Silicon Oxide Nanoclusters Stabilized in a Metal-Organic Framework. / Rimoldi, Martino; Gallington, Leighanne C.; Chapman, Karena W.; Macrenaris, Keith; Hupp, Joseph T; Farha, Omar K.

In: Chemistry - A European Journal, 2017.

Research output: Contribution to journalArticle

Rimoldi, Martino ; Gallington, Leighanne C. ; Chapman, Karena W. ; Macrenaris, Keith ; Hupp, Joseph T ; Farha, Omar K. / Catalytically Active Silicon Oxide Nanoclusters Stabilized in a Metal-Organic Framework. In: Chemistry - A European Journal. 2017.
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AU - Farha, Omar K.

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