Nanocrystal Templating of Silica Mesopores with Tunable Pore Sizes

Z. Kónya, Victor F. Puntes, I. Kiricsi, Ji Zhu, A. Paul Alivisatos, Gabor A. Somorjai

Research output: Contribution to journalArticle

84 Citations (Scopus)

Abstract

Metallic nanoparticles (platinum and gold) encapsulated in mesoporous silica (SBA-15) were prepared in the same solution by a novel two-step method. Characterization by X-ray scattering and electron microscopy consistently shows that the metal nanoparticles were homogeneously incorporated in the mesopores (retaining their size and morphology), even when the nanocrystal diameter exceeds the normal mesopore diameter. The nanoparticles nucleated the expansion of the mesopore channels in the 92-116 A range so they could accommodate the metal particles. This expansion occurs in the concentration range of 1-103 nanoparticles per 103 mesopore channels. This effect can be used to tune the pore size.

Original languageEnglish
Pages (from-to)907-910
Number of pages4
JournalNano Letters
Volume2
Issue number8
DOIs
Publication statusPublished - Aug 2002

Fingerprint

Silicon Dioxide
Nanocrystals
Pore size
nanocrystals
Silica
Nanoparticles
silicon dioxide
porosity
nanoparticles
Metal nanoparticles
Platinum
X ray scattering
Gold
Electron microscopy
expansion
metal particles
retaining
Metals
electron microscopy
platinum

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

Kónya, Z., Puntes, V. F., Kiricsi, I., Zhu, J., Alivisatos, A. P., & Somorjai, G. A. (2002). Nanocrystal Templating of Silica Mesopores with Tunable Pore Sizes. Nano Letters, 2(8), 907-910. https://doi.org/10.1021/nl0256661

Nanocrystal Templating of Silica Mesopores with Tunable Pore Sizes. / Kónya, Z.; Puntes, Victor F.; Kiricsi, I.; Zhu, Ji; Alivisatos, A. Paul; Somorjai, Gabor A.

In: Nano Letters, Vol. 2, No. 8, 08.2002, p. 907-910.

Research output: Contribution to journalArticle

Kónya, Z, Puntes, VF, Kiricsi, I, Zhu, J, Alivisatos, AP & Somorjai, GA 2002, 'Nanocrystal Templating of Silica Mesopores with Tunable Pore Sizes', Nano Letters, vol. 2, no. 8, pp. 907-910. https://doi.org/10.1021/nl0256661
Kónya, Z. ; Puntes, Victor F. ; Kiricsi, I. ; Zhu, Ji ; Alivisatos, A. Paul ; Somorjai, Gabor A. / Nanocrystal Templating of Silica Mesopores with Tunable Pore Sizes. In: Nano Letters. 2002 ; Vol. 2, No. 8. pp. 907-910.
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