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- 저자 : Lisak Grzegorz (검색결과 3 건)
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Pawan Kumar,Eric Vejerano,Azmatullah Khan,Grzegorz Lisak,안정현,김기현 한국화학공학회 2019 Korean Journal of Chemical Engineering Vol.36 No.11
Coordination polymers (CPs) are a unique class of polymers characterized by a molecular structure consisting of repeating metal centers linked by organic ligands in an infinite array connected through coordination bonding. In the last two decades, research interest in CPs, such as metal organic frameworks (MOFs), has grown rapidly owing to their exclusive advantageous properties (e.g., exceptionally high surface area, chemical and thermal stability, molecular functionality, porosity, electron mobility, thermal conductivity, and mechanical strength). In this study, we started with a basic question: Why and how are coordination polymers special and how do they differ from other classes of polymers? Next, we explored the value of unique and innovative CPs in line with the advent of design and synthesis approaches. We focused on the current trends and challenges of CPs/MOFs for application in the control and management of air quality. The intent of this review is to motivate development of CPs/MOFs that can be ultimately applied towards more efficient and effective technology as remediating and managing of the air quality. Ultimately, this review will help us open a new paradigm to pursue the future progress in polymers and materials science that targets specific applications in environmental engineering.
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Pawan Kumar,Ki-Hyun Kim,Jechan Lee,Jin Shang,Mohammed Iqbal Khazi,Naresh Kumar,Grzegorz Lisak 한국공업화학회 2020 Journal of Industrial and Engineering Chemistry Vol.84 No.-
Recently, the potential application of metal-organic frameworks (MOFs) has been recognized for removaland sensing of various organic pollutants (e.g., nitroaromatic compounds, pesticides, polycyclic aromaticcompounds, and herbicides) due to their unique tunable and versatile properties. In this paper, wereviewed the recent experimental and computational efforts to develop MOFs for adsorption removal,catalytic conversion, and sensing of nitroaromatic compounds. To this end, wefirst classifiednitroaromatic compounds in association with their toxicity. Then, we reviewed current advances madein the application of MOFs towards removal of nitroaromatic compounds (based on adsorption/catalysis)and their sensing applications. Furthermore, the discussion was made for the practical performance ofMOFs for such applications. Finally, the future prospects for MOFs are described in thefields of adsorptionremoval, catalytic conversion, and sensing of nitroaromatic compounds.
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Mao Po-Hsin,박영권,Lin Yi-Feng,Thanh Bui Xuan,Tuan Duong Dinh,Ebrahimi Afshin,Lisak Grzegorz,Tangcharoen Thanit,Lin Kun-Yi Andrew 한국화학공학회 2023 Korean Journal of Chemical Engineering Vol.40 No.12
As disinfection is employed extensively, disinfection by-product bromate has become an emerging environmental issue due to its carcinogenic toxicity. For developing an effective alternative approach for reducing bromate, cobalt and nickel-based Prussian Blue (PB) analogues are proposed here for incorporating a convenient reducing agent, NaBH4 (i.e., a H2-rich reagent) for reducing bromate to bromide as cobalt and nickel are recognized as effective metals for catalyzing hydrolysis of NaBH4, and PB exhibits versatile catalytic activity. While CoPB and NiPB are comprised of the same crystalline structure, CoPB exhibits slightly higher specific surface area, more reductive surface, and more superior electron transfer than NiPB, enabling CoPB to accelerate bromate reduction. CoPB also exhibits a higher affinity towards NaBH4 than NiPB based on density functional theory calculations. Moreover, CoPB also exhibits a relatively low activation energy (i.e., 59.5 kJ/mol) of bromate reduction than NiPB (i.e., 63.2 kJ/mol). Furthermore, bromate reduction by CoPB and NiPB could be also considerably enhanced under acidic conditions, and CoPB and NiPB could still effectively remove bromate even in the presence of nitrate, sulfate and phosphate. CoPB and NiPB are also validated to be recyclable for reducing bromate, indicating that CoPB and NiPB are promising heterogeneous catalysts for reducing bromate.
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