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Highly efficient and selective capture Pb(II) through a novel metal-organic framework containing bifunctional groups. 2022

Rui-Dong Wang, and Liancheng He, and Rong-Rong Zhu, and Mingxuan Jia, and Sihan Zhou, and Jinsheng Tang, and Wen-Qian Zhang, and Lin Du, and Qi-Hua Zhao
School of Chemical Science and Technology, Yunnan University, Kunming 650091, People's Republic of China.

The design and development of materials with a selective adsorption capacity for Pb(II) are very important for environmental governance and ecological safety. In this work, a novel 3D metal-organic framework ([Cd2H4L4Cl2SO4]·4H2O, Cd-MOF) is constructed using a multiple pyrazole heterocycles tetraphenylethylene-based ligand (H4L4) and CdSO4 which containing Pb(II) adsorption sites (SO42-). Studies have shown that the Cd-MOF has outstanding stability, and its maximum adsorption value of Pb(II) can be as high as 845.55 mg/g, which is higher than that of most MOFs or MOFs modified materials. It is worth emphasizing that the Cd-MOF have excellent recyclability due to the unique adsorption mechanism of the Cd-MOF. Thermodynamic studies have shown that Pb(II) adsorption of the Cd-MOF is a spontaneous endothermic process. Specific selective adsorption, exceptional stability and remarkable recyclability make the Cd-MOF a potential material for industrial capture and recovery of Pb(II) from water.

UI MeSH Term Description Entries
D007854 Lead A soft, grayish metal with poisonous salts; atomic number 82, atomic weight 207.2, symbol Pb.
D003247 Conservation of Natural Resources The protection, preservation, restoration, and rational use of all resources in the total environment. Carrying Capacity,Deforestation,Desertification,Environmental Protection,Natural Resources Conservation,Protection, Environmental,Capacities, Carrying,Capacity, Carrying,Carrying Capacities,Conservation, Natural Resources
D000073396 Metal-Organic Frameworks Supramolecular networks that consist of ordered arrangements of organic electron donor linkers (usually ditopic or polytopic organic carboxylates) and metal cations. They can have an extremely high surface area and adjustable pore size that allows for the insertion of other molecules capable of various functions such as catalysis, capture of carbon dioxide, and drug delivery. Metal Organic Framework,Metal-Organic Framework,Porous Coordination Polymer,Covalent Organic Framework,Porous Coordination Networks,Porous Coordination Polymers,Coordination Networks, Porous,Coordination Polymer, Porous,Coordination Polymers, Porous,Framework, Covalent Organic,Framework, Metal Organic,Framework, Metal-Organic,Frameworks, Metal-Organic,Metal Organic Frameworks,Networks, Porous Coordination,Organic Framework, Covalent,Organic Framework, Metal,Polymer, Porous Coordination,Polymers, Porous Coordination
D000327 Adsorption The adhesion of gases, liquids, or dissolved solids onto a surface. It includes adsorptive phenomena of bacteria and viruses onto surfaces as well. ABSORPTION into the substance may follow but not necessarily. Adsorptions
D014874 Water Pollutants, Chemical Chemical compounds which pollute the water of rivers, streams, lakes, the sea, reservoirs, or other bodies of water. Chemical Water Pollutants,Landfill Leachate,Leachate, Landfill,Pollutants, Chemical Water
D058735 Environmental Policy A course of action or principle adopted or proposed by a government, party, business, or individual that concerns human interactions with nature and natural resources. Environmental Policies,Policies, Environmental,Policy, Environmental

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