A Single-Crystalline Mesoporous Quartz Superlattice

Takamichi Matsuno, Yoshiyuki Kuroda, Masaki Kitahara, Atsushi Shimojima, Hiroaki Wada, Kazuyuki Kuroda

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

There has been significant interest in the crystallization of nanostructured silica into α-quartz because of its physicochemical properties. We demonstrate a single-crystalline mesoporous quartz superlattice, a silica polymorph with unprecedentedly ordered hierarchical structures on both the several tens of nanometers scale and the atomic one. The mesoporous quartz superlattice consists of periodically arranged α-quartz nanospheres whose crystalline axes are mostly oriented in an assembly. The superlattice is prepared by thermal crystallization of amorphous silica nanospheres constituting a colloidal crystal. We found that the deposition of a strong flux of Li+ only on the surface of silica nanospheres is effective for crystallization. Order a double: A single-crystalline mesoporous quartz superlattice with periodic order on both the several tens of nanometer scale and the atomic scale is prepared by crystallization of amorphous silica nanospheres which constitute a colloidal crystal. The periodic arrangement of silica nanospheres is retained even though Li+ ions are used as a strong flux.

Original languageEnglish
Pages (from-to)6008-6012
Number of pages5
JournalAngewandte Chemie - International Edition
Volume55
Issue number20
DOIs
Publication statusPublished - 2016 May 10

Keywords

  • colloidal crystals
  • mesoporous silica
  • single crystals
  • superlattices
  • α-quartz

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)

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