Aklilu Melese; Kenaegzer Mulate; Abdu Hussen; Afework Hailekiros; Walelign Wubet
Abstract
A group of supramolecular solid materials known as "metal organic frameworks"(MOFs) are a type of hybrid networks made up of a variety of inorganic and organic linkers that are all tightly bonded to metal ions. These classes of compounds have a larger surface area with the benefit of variable pore sizes, ...
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A group of supramolecular solid materials known as "metal organic frameworks"(MOFs) are a type of hybrid networks made up of a variety of inorganic and organic linkers that are all tightly bonded to metal ions. These classes of compounds have a larger surface area with the benefit of variable pore sizes, a diverse structure, and a lovely appearance. They are promising materials for a range of applications because they are easy to develop and have consistent, fine-tunable pore structures. Controlled mixing of MOFs with functional materials is resulting in the development of new multifunctional composites and hybrids that display unique properties that outperform those of their component parts as a whole. The structural characteristics, classification, The most widely used and successful strategies for MOFs composite synthesis are presented like (Encapsulation method, Solvothermal method, Solution impregnation, and Click chemistry (reaction) method), numerous characterization techniques and their applications MOFs composite have all been covered in this review. Crystals with extremely high porosity and good thermal and chemical stability can be produced by carefully choosing the MOF ingredients. Because of these properties, MOFs composites can be used for a wide range of applications, including, sensing toxic chemicals, drugs, gases, and trace metals, components of foods and many more and also for detection of different materials. This is a rapidly developing interdisciplinary research area therefore to present the current situation of the field; this article has covered recent achievements as well as new avenues to investigate the future scope and uses of MOFs composites/hybride.
Mitra Madani Gargari; Kamran Rahnama; Maede Shahiri Tabarestani
Abstract
Among biocontrol fungi, Trichoderma species produce a wide range of bioactive compounds with antifungal activities. In this study, Di-(2-Ethylhexyl) Phthalate (DEHP) is identified via gas chromatography-mass spectrometry (GC-MS) device in Trichoderma atroviridae (1-3) secondary metabolites and its antifungal ...
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Among biocontrol fungi, Trichoderma species produce a wide range of bioactive compounds with antifungal activities. In this study, Di-(2-Ethylhexyl) Phthalate (DEHP) is identified via gas chromatography-mass spectrometry (GC-MS) device in Trichoderma atroviridae (1-3) secondary metabolites and its antifungal effectiveness is confirmed. An eco-friendly approach for the extraction of DEHP is carried out by a nanoporous molecularly imprinted methacrylic acid-based network copolymer as a solid sorbent. Molecularly imprinted polymers (MIPs) are synthesized by precipitation polymerization using DEHP as a template, methacrylic acid (MAA) as a functional monomer and trimethylolpropane trimethacrylate (TRIM) as a cross-linker with molecular ratio (1: 4: 8). After the removal of DEHP, the nanoporous polymer can recognize and rebind specifically the same or structurally very similar molecules. The synthesized MIPs exhibit a suitable tendency to absorb the template with the highest binding capacity of 300 mg/g for DEHP in n-Hexane solvent as a solid phase extraction (SPE) system. The measured particle size of the MIPs with dynamic light scattering (DLS) is reported 75.38 nm. In addition, the porosity of the MIPs is evaluated by nitrogen gas adsorption/desorption using Brouneur Emmet Teller (BET) analysis. Results shows that nanoporous MIPs with an average pore diameter of 2.70 nm and a specific surface area of 309 (cm3/g) are achieved. According to the above-mentioned results, nanoporous MIPs can be considered as an acceptable candidate for separation of the antifungal bioactive compounds (natural fungicide) such as DEHP as an eco-friendly method to replace chemical pesticides.
Seyed Hamed Mousavi; Fatemeh Ajoudani; Taher Yousefi; Amir Charkhi; Nima Rezaee Mojdehi; Ramin Yavari
Abstract
{[Dy(BTC)(H2O)]•DMF}n metal organic framework nanoparticles was synthezed through solvthermal method. The product was characterized by XRD, TG, BET, and SEM techniques. SEM images showed that the synthesized sample has semi-cubic particles with average size of 70 nm in length.For improve the gas ...
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{[Dy(BTC)(H2O)]•DMF}n metal organic framework nanoparticles was synthezed through solvthermal method. The product was characterized by XRD, TG, BET, and SEM techniques. SEM images showed that the synthesized sample has semi-cubic particles with average size of 70 nm in length.For improve the gas separation performance,the MOF nano particles were dispersed in polydimethylsiloxane (PDMS) for preparation of mixed matrix membrane (MMM) on support of polyethersulphone (PES). The performance of obtained MMM in separation of NO, N2 and O2 gas were investigated, and the effect of MOF nanoparticles (5, 10, and 15% wt)and feed pressure (100-250 kPa) on permeability and selectivity were studied. It was found that the membrane performance is evaluated by addition of MOF nano particles in membrane (polymeric matrix), and the feed pressure have not important effect on separation. The performance (NO/N2 and NO/O2 selectivity) increased as the loading of MOF particles (up to 15% wt) being dispersed within the polymer matrices.
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