Encapsulation of metal (Au, Ag, Pt) nanoparticles into the mesoporous SBA-15 structure

Ji Zhu, Z. Kónya, Victor F. Puntes, I. Kiricsi, C. X. Miao, Joel W. Ager, A. Paul Alivisatos, Gabor A. Somorjai

Research output: Contribution to journalArticle

147 Citations (Scopus)

Abstract

Mesoporous silica was synthesized in the presence of metal (Au, Pt, and Ag) nanoparticles in the 2-20 nm range. Sample characterization was performed by X-ray diffraction and electron microscopy. The metal nanoparticles in the 2-10 nm range were successfully incorporated into the ordered mesoporous SBA-15 structures; 20 nm particles, whose diameter is larger than the SBA-15 pore size, could not be inserted. In the case of 5 and 10 nm diameter nanoparticles, regardless of which metal, the mesopore channels expanded in order to accommodate the metal particles. By using mixtures of metal nanoparticles of two different sizes, it was found that the inclusion and the resultant pore size were controlled by the larger size metal particles.

Original languageEnglish
Pages (from-to)4396-4401
Number of pages6
JournalLangmuir
Volume19
Issue number10
DOIs
Publication statusPublished - May 13 2003

Fingerprint

Encapsulation
Metals
Nanoparticles
nanoparticles
Metal nanoparticles
metal particles
metals
Pore size
porosity
Silicon Dioxide
Electron microscopy
electron microscopy
Silica
inclusions
silicon dioxide
microscopy
X ray diffraction
SBA-15
diffraction
x rays

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Colloid and Surface Chemistry

Cite this

Encapsulation of metal (Au, Ag, Pt) nanoparticles into the mesoporous SBA-15 structure. / Zhu, Ji; Kónya, Z.; Puntes, Victor F.; Kiricsi, I.; Miao, C. X.; Ager, Joel W.; Alivisatos, A. Paul; Somorjai, Gabor A.

In: Langmuir, Vol. 19, No. 10, 13.05.2003, p. 4396-4401.

Research output: Contribution to journalArticle

Zhu, J, Kónya, Z, Puntes, VF, Kiricsi, I, Miao, CX, Ager, JW, Alivisatos, AP & Somorjai, GA 2003, 'Encapsulation of metal (Au, Ag, Pt) nanoparticles into the mesoporous SBA-15 structure', Langmuir, vol. 19, no. 10, pp. 4396-4401. https://doi.org/10.1021/la0207421
Zhu, Ji ; Kónya, Z. ; Puntes, Victor F. ; Kiricsi, I. ; Miao, C. X. ; Ager, Joel W. ; Alivisatos, A. Paul ; Somorjai, Gabor A. / Encapsulation of metal (Au, Ag, Pt) nanoparticles into the mesoporous SBA-15 structure. In: Langmuir. 2003 ; Vol. 19, No. 10. pp. 4396-4401.
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