Fabrication of hierarchically porous spherical particles by assembling mesoporous silica nanoparticles via spray drying

Chihiro Urata, Yusuke Yamauchi, Yuko Aoyama, Junko Imasu, Shin Ichi Todoroki, Yoshio Sakka, Satoru Inoue, Kazuyuki Kuroda

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

A new type of hierarchically porous materials is fabricated by assembling mesoporous nanoparticles via spray drying. Well-dispersed mesostructured silica nanoparticles (MSN), whose particle size distribution was narrow in the range of 20 nm and 50 nm, were prepared by a thermal deposition method. By spray drying a MSN suspension, MSN were assembled into spherical secondary particles. After calcination, the spherical particles have two types of mesopores, mesopores of 3 nm in size inside of calcined MSN and larger inter-nanoparticle mesopores of about 15∼20 nm. This hierarchical pore system should provide nanospaces for efficient mass transport of guest species with different sizes.

Original languageEnglish
Pages (from-to)3101-3105
Number of pages5
JournalJournal of Nanoscience and Nanotechnology
Volume8
Issue number6
DOIs
Publication statusPublished - 2008 Jun 1

Keywords

  • Hierarchical structure
  • Mesoporous silica
  • Nanoparticles
  • Spherical particles
  • Spray drying

ASJC Scopus subject areas

  • Bioengineering
  • Chemistry(all)
  • Biomedical Engineering
  • Materials Science(all)
  • Condensed Matter Physics

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