Fabrication of novel copper MOF nanoparticles for nanozymatic detection of mercury ions

• DOI: 10.1016/j.jmrt.2022.10.167
• Publication Date: 2022-11-19T16:35:33Z
• Authors: Kirandeep; Jaspreet Kaur; Indu Sharma; Ennio Zangrando; Kaushik Pal; Surinder Kumar Mehta; Ramesh Kataria
• Keywords: Mercury; BET theory

Mercury (II) ions are considered the most harmful heavy metal ion and their accumulation in human body causes several diseases so need to be detected at trace levels. The use of nanozyme-based colorimetric detection is an acknowledged innovative method detect water bodies. In this work, we report CuMOF nanoparticles (CuMOF NPs) synthesized using hand grinding technique. MOF were characterized by FTIR, TGA, SCXRD, PXRD, FESEM TEM. SCXRD confirmed paddle wheel type structure exhibits interpenetrated pcu topology with point symbol {412.63}. BET analysis revealed a high surface area 15.995 m2g-1 pore diameter 3.42 nm for NPs. NPs found show peroxidase-like activity. employed as catalyst, where 3,3′,5,5′-tetramethylbenzidine (TMB) was oxidised Hg2+ bluish solution TMB obtained recorded UV–vis spectroscopy. activity determined limit 0.55 μM, Km 0.0477 M, Vmax 0.3125 M s−1 TMB, 2.646 0.126 H2O2. selectivity excellent mechanism supported XPS analysis. So, provide low-cost, eco-friendly approach