Electrochemical sensing of malathion using doped MOFs

Abstract

Coordination polymerization produces a variety of metal-organic frameworks (MOFs), each with its own set of physical & chemical properties. Making MOFs suitably conductive in nature, is one of the hurdles faced to be utilized its potential practical applications. To explore the electrical conductivity’s features of MOFs, NH2-Al-MOF, ZnQ@ZIF-8 and Al-MIL-53 MOF have been treated with NaOH, H2SO4, and HCl. Acid/Alkaline doped MOFs have been utilized to prepare conducting thin films on indium tin oxide (ITO) slides using drop-casted method. Electrical feature analysis has indicated reduction in overall resistance of NH2-Al-MOF < ZnQ@ZIF-8 < Al-MIL-53. The prepared MOFs thin films have been used for malathion detection. We have found limit of detection (LOD) i.e., 1.668 mg/L 2.386 mg/L and 2.397 mg/L for malathion using doped MOFs, respectively.

Metal–Organic Frameworks Based Sensor Platforms for Rapid Detection of Contaminants in Wastewater

“…The detection of glyphosate was stable and reproducible due to the significant affinity of chelating groups PO, CO, and N–H in glyphosate for Cu 2+ (Figure ). Nikhar et al used acid–base-doped MOFs in an electrochemical sensor to detect malathion, and the LOD was 1.668 mg L –1 with good stability . Furthermore, dichlorvos and dichlorophenol may be detected by MOFs electrochemical sensors, making it a viable method for detecting nonelectroactive pesticides in combination with MOFs.…”

“…7 Nikhar et al used acid−basedoped MOFs in an electrochemical sensor to detect malathion, and the LOD was 1.668 mg L −1 with good stability. 2 Furthermore, dichlorvos 71 and dichlorophenol 47 may be detected by MOFs electrochemical sensors, making it a viable method for detecting nonelectroactive pesticides in combination with MOFs.…”