Interaction of Zif-8 with Cu2+ in Water Solutions for Remediation Applications

20 Pages Posted: 4 Sep 2023

See all articles by Ludovico Giuseppe Barbata

Ludovico Giuseppe Barbata

affiliation not provided to SSRN

Emanuele Sangiorgi

affiliation not provided to SSRN

Martina Maria Calvino

affiliation not provided to SSRN

Francesco Armetta

University of Palermo

Giuseppe Lazzara

affiliation not provided to SSRN

Maria Luisa Saladino

University of Palermo

Michelangelo Scopelliti

affiliation not provided to SSRN

Franco Mario Gelardi

affiliation not provided to SSRN

Simonpietro Agnello

affiliation not provided to SSRN

Gianpiero Buscarino

affiliation not provided to SSRN

Abstract

Water pollution is a global environmental problem and now more topical than ever. Among several pollutants, heavy metals are of particular interest due to their toxicity and high bioaccumulation capacity. Metal-organic frameworks (MOFs) are exceptional adsorbents for capturing metal ions in water. Between them, ZIF-8 has high sequestration capacity of copper ions in water, but the capture mechanism remains unclear. The scope of this work is to investigate the interaction of ZIF-8 with copper ions in aqueous solution at pH=7, discriminating between effects due to water, copper and those resulting from their concomitant presence. Several samples were prepared dispersing a certain amount of ZIF-8 in an aqueous Cu2+ solution at a fixed concentration in the range between 0-300 mg/L. X-ray diffraction, Raman Spectroscopy, gas porosimetry, Thermogravimetry, X-ray photoelectron spectroscopy (XPS) and Electron Paramagnetic Resonance (EPR) were used to evaluate the structural features of the ZIF-8 before and after Cu2+ capture. Our results indicates that ZIF-8 is capable to capture high amounts of Cu2+, but in aqueous solution it undergoes a dissolution and reorganization process that affect its applications in simply powder form.

Keywords: ZIF-8, water remediation, MOF

Suggested Citation

Barbata, Ludovico Giuseppe and Sangiorgi, Emanuele and Calvino, Martina Maria and Armetta, Francesco and Lazzara, Giuseppe and Saladino, Maria Luisa and Scopelliti, Michelangelo and Gelardi, Franco Mario and Agnello, Simonpietro and Buscarino, Gianpiero, Interaction of Zif-8 with Cu2+ in Water Solutions for Remediation Applications. Available at SSRN: https://ssrn.com/abstract=4560976 or http://dx.doi.org/10.2139/ssrn.4560976

Ludovico Giuseppe Barbata

affiliation not provided to SSRN ( email )

No Address Available

Emanuele Sangiorgi

affiliation not provided to SSRN ( email )

No Address Available

Martina Maria Calvino

affiliation not provided to SSRN ( email )

No Address Available

Francesco Armetta

University of Palermo ( email )

Giuseppe Lazzara

affiliation not provided to SSRN ( email )

No Address Available

Maria Luisa Saladino

University of Palermo ( email )

Michelangelo Scopelliti

affiliation not provided to SSRN ( email )

No Address Available

Franco Mario Gelardi

affiliation not provided to SSRN ( email )

No Address Available

Simonpietro Agnello

affiliation not provided to SSRN ( email )

No Address Available

Gianpiero Buscarino (Contact Author)

affiliation not provided to SSRN ( email )

No Address Available

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