A simple strategy for the detection of Pb(II) and Cu(II) by an electrochemical sensor based on Zn/Ni-ZIF-8/XC-72/Nafion hybrid materials

Progress and opportunities for metal–organic framework composites in electrochemical sensors

“…Li et al 64 developed a novel electrochemical sensor by using the Zn/Ni-ZIF-8/XC-72/Nafion composite as an electrode surface modifier for simultaneous detection of Pb( ii ) and Cu( ii ) ( Fig. 4 ).…”

CelloZIFPaper: Cellulose-ZIF Hybrid Paper for Heavy Metal Removal and Electrochemical Sensing

“…CelloZIFPaper was used without the need for GCE or chelating agents such as DMG, β-CD, or rGO [84]. Zn/Ni-ZIF-8/Carbon black (XC-72)/Nafion/GCE was used for the detection of Pb 2+ and Cu 2+ using differential pulse voltammetry (DPV, Table 3) [86]. It showed good selectivity towards both of the studied metal ions based on each species' reduction potential [86].…”

“…Zn/Ni-ZIF-8/Carbon black (XC-72)/Nafion/GCE was used for the detection of Pb 2+ and Cu 2+ using differential pulse voltammetry (DPV, Table 3) [86]. It showed good selectivity towards both of the studied metal ions based on each species' reduction potential [86]. However, the electrode preparation is tedious and suffers from particle aggregation.…”

Dual functions of metal ion detection and antibacterial activity of sulfur quantum dots

“…However, they require bulky and expensive equipment, skilled technicians, cumbersome sample preparation procedures, and difficulties in on-site determination. Along with ICPMS, and AAS, several strategies have been developed for detecting Pb( ii ) and Bi( iii ) ions, such as microelectromechanical, 14 non-faradaic impedimetric sensors, 15 electrochemical sensors, 16 metal–organic frameworks, 17 nanocompsites, 18 TiO 2 -based optical sensors, 19 voltametric strategies, 20 etc. However, fluorescence can be a good alternative to address these challenges due to its simplicity, high selectivity, and enormous potential for analyte determination.…”