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

研究成果: Chapter

14 被引用数 (Scopus)

抄録

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.

本文言語English
ホスト出版物のタイトルFrom Zeolites to Porous MOF Materials - The 40th Anniversary of International Zeolite Conference
出版社Elsevier Inc.
ページ1774-1780
ページ数7
B
ISBN(印刷版)0444530681, 9780444530684
DOI
出版ステータスPublished - 2007
外部発表はい

出版物シリーズ

名前Studies in Surface Science and Catalysis
番号B
170
ISSN(印刷版)0167-2991

ASJC Scopus subject areas

  • 触媒
  • 凝縮系物理学
  • 物理化学および理論化学
  • 表面、皮膜および薄膜
  • 材料化学

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