Engineering β-ketoenol structure functionality in hybrid silica as excellent adsorbent material for removal of heavy metals from water

Abstract

A chelating adsorbent based on the chemical modification of silica by an efficient host able to capture toxic metals, is presented.

Selective Confinement of CdII in Silica Particles Functionalized with β‐Keto‐Enol‐Bisfuran Receptor: Isotherms, Kinetic and Thermodynamic Studies

“…The new ( Z )‐1,3‐di(furan‐2‐yl)‐3‐hydroxyprop‐2‐en‐1‐one ( L 1 ) ligand was prepared by a one‐pot condensation of ethyl furan‐2‐carboxylate and 1‐(furan‐2‐yl)ethan‐1‐one , . This receptor was anchored to the silica surface after reaction with 3‐aminopropylmethoxysilane to yield to a new hybrid material named SiNFn 2 (Scheme ).…”

Isolation and Characterization of Magnetic Oil Palm Empty Fruits Bunch Cellulose Nanofiber Composite as a Bio-Sorbent for Cu(II) and Cr(VI) Removal

“…Various technologies, including adsorption [ 5 ], precipitation [ 6 ], flotation [ 6 , 7 ] electroflotation [ 8 , 9 ], ion exchange [ 10 ], solvent extraction [ 4 ], and membrane filtration [ 11 ], are utilized for the separation of heavy metals from industrial effluent. Among these techniques, adsorption is considered a promising method for removing heavy metal from effluent because of its distinct advantages over other technologies, including easy to operate, cost-effective, and element trace metal ions [ 5 , 12 , 13 , 14 ]. Various materials such as clay [ 12 ], activated carbon [ 13 ], chelating materials [ 14 ], and natural polymer [ 15 ] have been utilized as an adsorbent for the elimination of the heavy metals from industrial effluents.…”

“…Among these techniques, adsorption is considered a promising method for removing heavy metal from effluent because of its distinct advantages over other technologies, including easy to operate, cost-effective, and element trace metal ions [ 5 , 12 , 13 , 14 ]. Various materials such as clay [ 12 ], activated carbon [ 13 ], chelating materials [ 14 ], and natural polymer [ 15 ] have been utilized as an adsorbent for the elimination of the heavy metals from industrial effluents. However, the low sorption efficiency of these adsorbents has limited their application in the adsorption of heavy metals [ 2 , 3 ].…”

Efficient and Environmentally Friendly Adsorbent Based on β-Ketoenol-Pyrazole-Thiophene for Heavy-Metal Ion Removal from Aquatic Medium: A Combined Experimental and Theoretical Study

“… 22 , 23 In addition, the possibility to introduce various organic ligands onto its surface to construct adsorbents that can effectively trap potential toxic metal ions 24 − 30 and its adsorption performance, which mainly depends on the nature of grafted ligands, are considered as the key success factors to better chelate with metal ions. 31 − 33 …”