Nanoreactors derived from silica-protection-assisted metal-organic framework

Core-shell nanoreactors are synthesized through calcining silica-protected ZIF-67, and the nanomaterials with optimized structure exhibit excellent electrochemical performance. New nanoreactors are designed by combining sulfides and phosphides with Co3O4@SiO2. [Display omitted] The construction of h...

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Bibliographic Details
Published in:Chinese chemical letters 2020-09, Vol.31 (9), p.2207-2210
Main Authors: Jin, Ling, Li, Xiaxia, Liu, Chunsen, Pang, Huan
Format: Article
Language:English
Subjects:
Co3(OH)4Si2O5
Core-shell structure
Metal oxide nanoparticles
Nanoreactors
Silicon shell
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Summary:Core-shell nanoreactors are synthesized through calcining silica-protected ZIF-67, and the nanomaterials with optimized structure exhibit excellent electrochemical performance. New nanoreactors are designed by combining sulfides and phosphides with Co3O4@SiO2. [Display omitted] The construction of highly stable and regular nanoreactors is a major challenge. In this work, we use a facile template protection method to obtain ZIF-67@SiO2 (JS) and to encapsulate metal oxide nanoparticles (Co3O4) into nanoreactors (SiO2). ZIF-67 crystals provide a cobalt species; SiO2 was first used as a protective layer of ZIF-67 and then as a nanoreactor for metastable metal oxide nanoparticles. On this basis, Co3O4@SiO2 with dodecahedron morphology were synthesized by calcining JS at different temperatures, followed by a hydrothermal reaction to obtain Co3(OH)4Si2O5. Subsequently, CoSx and CoP-SiO2 were fabricated through sulfuration and phosphorization. The results in this work show that nanoreactors derived from metal-organic frameworks (MOFs) with a rational structure have broad development prospects.
ISSN:1001-8417
1878-5964
DOI:10.1016/j.cclet.2019.08.044