Micron to sub-micron sized highly ordered mesoporous silica particles prepared using a high energy ball milling process

J. Eric Hampsey, Claudio L. De Castro, Byron F. McCaughey, Donghai Wang, Brian S. Mitchell, Yunfeng Lu

Research output: Contribution to journalConference articlepeer-review

Abstract

Highly ordered mesoporous silica particles with sizes in the micron to sub-micron range are of great interest due to their applications as catalysts and filler materials. Currently, mesoporous silica particles are synthesized using large amounts of solvent, which is impractical for large scale-up in industry. This paper reports on a high-energy ball milling process that has been employed to create micron to sub-micron sized mesoporous silica particles starting from a silica xerogel prepared by a surfactant self-assembly sol-gel process. We have studied the effect of parameters such as milling media (e.g., zirconia, stainless steel, and steel centered nylon balls), milling time, the presence of surfactants during milling, particle size, and pore structure. Results from transmission electron microscopy (TEM), scanning electron microscopy (SEM), X-ray diffraction (XRD), and nitrogen adsorption demonstrate the feasibility of producing large quantities of mesostructured particles by a simple milling process.

Original languageEnglish (US)
Pages (from-to)83-88
Number of pages6
JournalMaterials Research Society Symposium - Proceedings
Volume775
DOIs
StatePublished - 2003
EventSelf-Assembled Nanostructured Materials - San Francisco, CA, United States
Duration: Apr 22 2003Apr 25 2003

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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