Efficient Detection of Fe3+ and Cr2O72− Ions in Water by Zn-Tetrazolate-Based Two-Dimensional Metal-Organic Framework: A Comparative Study

Abstract

Excesses and shortages of some metal ions such as Fe3+ and Cr2O72− pose a threat to human life. A Zn-based two-dimensional MOF has proven to be sensitive for Fe3+ and Cr2O72− in water with Ksv values of 1.8 × 104 and 6.5 × 104, respectively. The limit of detection (LOD) for these ions was found to be 2.5 μM and 0.15 μM for Fe3+ and Cr2O72− ions, respectively. A comparative study was conducted using two 3D MOFs in terms of their detection ability, synthesis and structure.