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

A Novel Coordination Polymer as Adsorbent Used to Remove Hg(II) and Pb(II) from Water with Different Adsorption Mechanisms

“… 1 , 9 , 10 Moreover, wastewater is a complex system with a large number of ions, so it is very meaningful to design and synthesize novel stable and selective adsorbents. 11 , 12 …”

“…Coordination polymers (CPs), which are inorganic–organic hybrid materials prepared from metal ions and organic ligands, have emerged as excellent materials because of their availability in various applications. 12 − 14 By selecting ligands with functional groups or postsynthetic modification, it is possible to design and synthesize CPs with specific structures and properties. 15 , 16 With the continuous development of CPs, scientists have obtained a variety of CPs for the removal of heavy metal ions in water through presynthesis design or postsynthesis modification.…”

“…In recent years, the concentrations of heavy metal ions in water have increased at an unimaginable rate because of the continuous development of industry. − These excessive heavy metal ions in water have seriously threatened human health and the safety of the ecosystem. − Among various heavy metal ions, Hg­(II) and Pb­(II) are not only highly toxic but also the most common heavy metal ions’ pollutants in the water environment. , Therefore, the removal of Hg­(II) and Pb­(II) pollution from water is currently the most urgent thing. ,, Moreover, wastewater is a complex system with a large number of ions, so it is very meaningful to design and synthesize novel stable and selective adsorbents. , …”

“…Coordination polymers (CPs), which are inorganic–organic hybrid materials prepared from metal ions and organic ligands, have emerged as excellent materials because of their availability in various applications. − By selecting ligands with functional groups or postsynthetic modification, it is possible to design and synthesize CPs with specific structures and properties. , With the continuous development of CPs, scientists have obtained a variety of CPs for the removal of heavy metal ions in water through presynthesis design or postsynthesis modification. , The Morsali group chose H 2 BDC and nitrogen-containing ligand N 1 , N 2 -bis­(pyridin-4-ylmethylene) ethane-1,2-diamine to construct a CP (TMU-40) that can efficiently remove Hg­(II) ( q e = 269 mg/g), and the O-TMU-40 by postsynthesis modification can remove Pb­(II) ( q e = 215 mg/g) …”

Efficient and selective removal of Pb2+ from aqueous solution by using an O− functionalized metal–organic framework

“…Nowadays, various methods including chemical precipitation, redox, electrolysis, membrane permeation, ion exchange and adsorption, have been developed for the capture of heavy metal ions. 3–7 Among them, adsorption stands out for its high efficiency, easy operation and low cost. Until now, numerous adsorbents have been synthesized, such as alumina, zeolite molecular sieves, activated carbon materials, nanomaterials and chelating polymers.…”