期刊
CHEMISTRY-A EUROPEAN JOURNAL
卷 27, 期 22, 页码 6804-6814出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.202005050
关键词
adsorption; defects; encapsulation; MOF-808; reactivity
资金
- European Union's Horizon 2020 research and innovation program under the Marie Skodowska-Curie grant [641887]
- Projekt DEAL
Defect engineering and metal encapsulation are valuable approaches to fine-tune the reactivity of metal-organic frameworks. This study quantified the reactivity of pristine, defective, and Pt encapsulated MOF-808, revealing competitive effects between crystal morphology and missing linker defects, which can impact the stability of the MOF. Despite leading to a loss in porosity, defects are beneficial for the stability of MOF-808 towards water and can be used to tune adsorption properties.
Defect engineering and metal encapsulation are considered as valuable approaches to fine-tune the reactivity of metal-organic frameworks. In this work, various MOF-808 (Zr) samples are synthesized and characterized with the final aim to understand how defects and/or platinum nanoparticle encapsulation act on the intrinsic and reactive properties of these MOFs. The reactivity of the pristine, defective and Pt encapsulated MOF-808 is quantified with water adsorption and CO2 adsorption calorimetry. The results reveal strong competitive effects between crystal morphology and missing linker defects which in turn affect the crystal morphology, porosity, stability, and reactivity. In spite of leading to a loss in porosity, the introduction of defects (missing linkers or Pt nanoparticles) is beneficial to the stability of the MOF-808 towards water and could also be advantageously used to tune adsorption properties of this MOF family.
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