Role of Zr6 Metal Nodes in Zr-Based Metal-Organic Frameworks for Catalytic Detoxification of Pesticides.
Dongsik NamYeongjin KimMiyeon KimJoohan NamSeonghoon KimEunji JinChang Yeon LeeWonyoung ChoePublished in: Inorganic chemistry (2021)
Pesticides are chemicals widely used for agricultural industry, despite their negative impact on health and environment. Although various methods have been developed for pesticide degradation to remedy such adverse effects, conventional materials often take hours to days for complete decomposition and are difficult to recycle. Here, we demonstrate the rapid degradation of organophosphate pesticides with a Zr-based metal-organic framework (MOF), showing complete degradation within 15 min. MOFs with different active site structures (Zr node connectivity and geometry) were compared, and a porphyrin-based MOF with six-connected Zr nodes showed remarkable degradation efficiency with half-lives of a few minutes. Such a high efficiency was further confirmed in a simple flow system for several cycles. This study reveals that MOFs can be highly potent heterogeneous catalysts for organophosphate pesticide degradation, suggesting that coordination geometry of the Zr node significantly influences the catalytic activity.
Keyphrases
- metal organic framework
- pet imaging
- risk assessment
- high efficiency
- human health
- lymph node
- healthcare
- high resolution
- heavy metals
- sentinel lymph node
- squamous cell carcinoma
- climate change
- computed tomography
- early stage
- functional connectivity
- radiation therapy
- resting state
- neoadjuvant chemotherapy
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- highly efficient