Synthesis of Pt-Sn core-shell nanoparticles deposited on SBA-15 modified

L. Álvarez-Contreras, I. Alonso-Lemus, G. G. Botte, Y. Verde-Gómez

Research output: Contribution to journalArticlepeer-review

Abstract

A novel one-step synthesis method to prepare Pt-Sn bimetallic nanoparticles supported on mesoporous silica with high surface area (SBA-15, 700 m 2/g) and narrow pore size distribution (around 9.5 nm) was developed. Tin incorporation plays an important dual role, to create active sites into the silica walls that serve as particles anchors center, and to grow Pt-Sn core-shell nanoparticles. High-resolution transmission and scanning electron microscopy, and X-ray diffraction pattern confirm the formation of the Pt-Sn core-shell type nanoparticles (≈1-10 nm). The metal loading was 2.2 and 2.3 wt% for Pt and Sn, respectively. Electron microscopy results show that the metal nanoparticles were deposited not only on the matrix, but also inside of it. Structural, textural, and morphological features of the SBA-15 were slightly affected after the nanoparticles deposition, maintaining its high surface area. The results obtained suggest that Pt-Sn on SBA-15 could be attractive material for several catalytic applications, due to the narrow particle size distribution achieved (from 1 to 10 nm) the high dispersion on the support, as well as the Pt-Sn alloy developed. Graphical Abstract: [Figure not available: see fulltext.]

Original languageEnglish
Article number1799
JournalJournal of Nanoparticle Research
Volume15
Issue number7
DOIs
StatePublished - 2013

Keywords

  • Bimetallic nanoparticles
  • Core-shell
  • HR-TEM
  • Mesoporous materials
  • Pt-Sn catalyst

Fingerprint Dive into the research topics of 'Synthesis of Pt-Sn core-shell nanoparticles deposited on SBA-15 modified'. Together they form a unique fingerprint.

Cite this