Ghost-Template-Faceted Synthesis of Tunable Amorphous Hollow Silica Nanostructures and Their Ordered Mesoscale Assembly
SCIE
SCOPUS
- Title
- Ghost-Template-Faceted Synthesis of Tunable Amorphous Hollow Silica Nanostructures and Their Ordered Mesoscale Assembly
- Authors
- Choi, Jeong Hun; Kumari, Nitee; Koo, Jung Hun; Kumar, Amit; Lee, Changhoon; SHIM, JI HOON; Wang, Zhipeng; Oh, Sang Ho; Lee, In Su
- Date Issued
- 2022-02
- Publisher
- American Chemical Society
- Abstract
- Despite the enormous applications of and fundamental scientific interest in amorphous hollow-silica nanostructures (h-SiNSs), their synthesis in crystal-like nonspherical polygonal architectures is challenging. Herein, we present a facile one-shot synthetic procedure for various unconventional h-SiNSs with controllable surface curvatures (concave, convex, or angular), symmetries (spherical, polygonal, or Janus), and interior architectures (open or closed walls) by the addition of a metal salt and implementing kinetic handles of silica precursor (silanes/ammonia) concentrations and reverse-micellar volume. During the silica growth, we identified the key role of transiently in situ crystallized metal coordination complexes as a nanopolyhedral “ghost template”, which provides facet-selective interactions with amino-silica monomers and guides the differential silica growth that produces different h-SiNSs. Additionally, crystal-like well-defined polygonal h-SiNSs with flat surfaces, assembled as highly ordered close-packed octahedral mesoscale materials (ca. 3 μm) where h-SiNSs with different nanoarchitectures act as building units (ca. 150 nm) to construct customizable cavities and nanospaces, differ from conventionally assembled materials.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/109532
- DOI
- 10.1021/acs.nanolett.1c04268
- ISSN
- 1530-6984
- Article Type
- Article
- Citation
- Nano Letters, vol. 22, no. 3, page. 1159 - 1166, 2022-02
- Files in This Item:
- There are no files associated with this item.
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.