Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 10, Issue 28, Pages 23952-23960Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.8b05098
Keywords
metal-organic frameworks; inorganic nanoparticles; ZIP composites; etching; crystal growth; cascade catalysis
Funding
- EU [615954]
- Spanish MINECO projects [PN MAT2015-65354-C2-1-R, MAT2015-70725-R, CTQ2016-77989-P]
- Catalan AGAUR projects [2014 SGR 80, 2014 SGR 612, 2014 SGR 862]
- CERCA Program/ Generalitat de Catalunya
- MINECO through Ramon y Cajal program [RYC-2012-10991]
- Spanish MINECO through Severo Ochoa Centers of Excellence Program [SEV-2013-0295]
- ICREA-Academia awards
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Here, we report the synthesis of (multi)-layered zeolitic imidazolate framework (ZIF-8/-67) composite particles via a sequential deconstruction-reconstruction process. We show that this process can be applied to construct ZIF-8-on- ZIF-67 composite particles whose cores are the initially etched particles. In addition, we demonstrate that introduction of functional inorganic nanoparticles (INPs) onto the crystal surface of etched particles does not disrupt ZIF particle reconstruction, opening new avenues for designing (multi) -layered ZIF-on-INP-on-ZIF composite particles comprising more than one class of inorganic nanoparticles. In these latter composites, the location of the inorganic nanoparticles inside each single metal-organic framework particle as well as of their separation at the nanoscale (20 nm) is controlled. Preliminary results show that (multi)-layered ZIF-on-INP-on-ZIF composite particles comprising a good sequence of inorganic nanoparticles can potentially catalyze cascade reactions.
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