Nanoscale Control of Homoepitaxial Growth on a Two-Dimensional Zeolite

Shete M., Kumar M., Kim D., Rangnekar N., Xu D., TOPUZ B., ...Daha Fazla

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, cilt.56, sa.2, ss.535-539, 2017 (SCI-Expanded) identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 56 Sayı: 2
  • Basım Tarihi: 2017
  • Doi Numarası: 10.1002/anie.201607063
  • Dergi Adı: ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.535-539
  • Anahtar Kelimeler: two-dimensional materials, crystal engineering, crystal growth, nanotechnology, zeolites, STRUCTURE-DIRECTING AGENTS, PURE-SILICA ZEOLITES, SECONDARY GROWTH, MFI, NANOSHEETS, MEMBRANES, SEPARATION, FILMS, NANOPARTICLES, MECHANISM
  • Ankara Üniversitesi Adresli: Evet

Özet

Nanoscale crystal growth control is crucial for tailoring two-dimensional (2D) zeolites (crystallites with thickness less than two unit cells) and thicker zeolite nanosheets for applications in separation membranes and as hierarchical catalysts. However, methods to control zeolite crystal growth with nanometer precision are still in their infancy. Herein, we report solution-based growth conditions leading to anisotropic epitaxial growth of 2D zeolites with rates as low as few nanometers per day. Contributions from misoriented surface nucleation and rotational intergrowths are eliminated. Growth monitoring at the single-unit-cell level reveals novel nanoscale crystal-growth phenomena associated with the lateral size and surface curvature of 2D zeolites.