fig3

From: Advancements in porous organic frameworks based electrochemical sensors for organophosphorus pesticides detection

Figure 3. (A) The preparation of Cu-BTC MOFs (Reproduced with permission^[86]. Copyright 2019, Elsevier), (B) Cu-TCPP MOFs (Reproduced with permission^[100]. Copyright 2022, Elsevier), (C) Nd₂O₃-Fe MOFs (Reproduced with permission^[105]. Copyright 2023, Royal Society of Chemistry), (D) Ce-MOFs (Reproduced with permission^[106]. Copyright 2026, Elsevier), NEESs. ITO: Indium tin oxide; DPV: differential pulse voltammetry; TCPP: tetra(4-carboxyphenyl)porphine; PVP: polyvinylpyrrolidone; GLY: glyphosate; GCE: glassy carbon electrode; BTC: trimesic acid; NBA: nile blue A; MP: methyl parathion; MOF: metal-organic framework; NEES: non-enzymatic electrochemical sensor; H₃BTC: benzenemalic acid.