Synthesis of well-ordered nanospheres with uniform mesopores assisted by basic amino acids

Toshiyuki Yokoi, Marie Iwama, Ryota Watanabe, Yasuhiro Sakamoto, Osamu Terasaki, Yoshihiro Kubota, Junko N. Kondo, Tatsuya Okubo, Takashi Tatsumi

Research output: Chapter in Book/Report/Conference proceedingChapter

16 Citations (Scopus)


We applied basic amino acids in place of NH3 to the well-known Stöber method for preparing silica spheres; the hydrolysis and condensation reactions of tetraethyl orthosilicate were conducted in the presence of basic amino acids such as L-lysine and L-arginine. The obtained silica spheres, which are of uniform size of 12 nm, are well-ordered, forming a cubic closed pack (ccp) structure, Fm-3m space group. The arrangement of uniform spheres simultaneously creates intraparticle uniform mesopores of about 3 nm. We also succeeded in the preparation of exact carbon replica with uniform mesopores by using the silica nanospheres as a template. The results shown here are the first example of the arrangement of silica nanospheres assisted by simple biomolecules, leading to the development of a novel family of ordered mesoporous materials, which will open up a wide range of possibilities for the synthesis of spontaneously assembled nano-structured materials.

Original languageEnglish
Title of host publicationFrom Zeolites to Porous MOF Materials - The 40th Anniversary of International Zeolite Conference
PublisherElsevier Inc.
Number of pages7
ISBN (Print)0444530681, 9780444530684
Publication statusPublished - 2007
Externally publishedYes

Publication series

NameStudies in Surface Science and Catalysis
ISSN (Print)0167-2991

ASJC Scopus subject areas

  • Catalysis
  • Condensed Matter Physics
  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films
  • Materials Chemistry


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