Architecture of optical sensor for recognition of multiple toxic metal ions from water

Versatile bimetallic lanthanide metal-organic frameworks for tunable emission and efficient fluorescence sensing

“…4d). In addition, the common anion NO 3 − exhibited a slight effect on the Fe 3+ detection (Supplementary Figs. 27 and 28 Recognition mechanism of Fe 3+ ion.…”

“…The precipitate was collected by filtration, washed with deionized water and dried at 60°C overnight by vacuum oven. The desired ligand CTP-COOH was obtained as white powder ( 3 . According to the pre-designed ratio, Eu x Tb y Cl 3 •H 2 O (x + y = 0.5 mmol) and ligand (0.5 mmol) were placed in a 50 mL vial.…”

“…In this work, we report a series of versatile bimetallic LnMOFs, i.e., [Ln·(CTP-COOH)(H 2 O) 3 ] (Ln-CTP-COOH, Ln = Eu 3+ and Tb 3+ ), constructed from a flexible ligand hexa-(4-carboxyl-phenoxy)-cyclotriphosphazene (CTP-COOH). These differ from prior literature studies 26,45 , since the characteristic emission intensity of Eu 3+ (616 nm) and Tb 3+ (547 nm) ions in bimetallic Eu 0.…”

Environmental remediation and monitoring of cadmium

“…These aluminosilica materials demonstrate exciting sensing applications despite their disorderly structures . The monofunctionalization of the inner surface or successive inclusion of different organic moieties can be achieved by co-condensation or post-synthetic covalent grafting of organic compounds that yield high-order hybrid materials [86][87][88][89][90][91][92]. The metal ions can then interact with organic moieties by non-covalent bonding, such as hydrogen bonding, metal coordination, hydrophobic forces, van der Waals forces, π-π interactions, and electrostatic and/or electromagnetic effects.…”

Detection and Recovery of Palladium, Gold and Cobalt Metals from the Urban Mine Using Novel Sensors/Adsorbents Designated with Nanoscale Wagon-wheel-shaped Pores

“…Recent progress has been made in reducing the cost and shortening the time to fabricate optical chemical nanosensors/adsorbents; however, optical adsorbents are still used for specific real-world sensing, extraction, and recovery applications for a wide range of metals [28][29][30][31][32][33][34][35][36] . Recently, research has focused on tailoring specific solid mesoporous monoliths for use as highly sensitive sensors for the simple and simultaneous naked-eye detection and removal of toxic and precious metal ions, such as mercury and gold ions, from aquatic samples [28][29][30][31][32] . Here, a process for selectively detecting and efficiently recovering Au(III) and Pd(II) from the urban mine was reported; additionally, the process can be applied for the recovery of Co(II) ions from LIBs.…”