In-situ synthesized ZIF-67 graphene oxide (ZIF-67/GO) nanocomposite for efficient individual and simultaneous detection of heavy metal ions.

Autor: Ghafoor M; Department of Chemistry, COMSATS University Islamabad, Lahore Campus, Lahore, 54000, Pakistan., Khan ZU; Department of Physics, COMSATS University Islamabad, Lahore Campus, Lahore, 54000, Pakistan., Nawaz MH; IRCBM, COMSATS University Islamabad, Lahore Campus, Lahore, Pakistan., Akhtar N; Institute of Chemical Sciences, Bahauddin Zakariya University (BZU), Multan, 60800, Pakistan., Rahim A; IRCBM, COMSATS University Islamabad, Lahore Campus, Lahore, Pakistan. rahimkhan533@gmail.com.; Department of Chemistry, COMSATS University Islamabad, Park Road, Tarlai Kalan, Islamabad, 45550, Pakistan. rahimkhan533@gmail.com., Riaz S; Department of Chemistry, COMSATS University Islamabad, Lahore Campus, Lahore, 54000, Pakistan. sarahasnain@cuilahore.edu.pk.
Jazyk: angličtina
Zdroj: Environmental monitoring and assessment [Environ Monit Assess] 2023 Feb 23; Vol. 195 (3), pp. 423. Date of Electronic Publication: 2023 Feb 23.
DOI: 10.1007/s10661-023-10966-8
Abstrakt: Heavy metals are ubiquitous in water bodies as a result of anthropogenic activities and over time they accumulate in body thus posing serious health problems. Therefore, it is essential to improve sensing performance, for determination of heavy metal ions (HMIs), of electrochemical sensors. In this work, cobalt-derived MOF (ZIF-67) was in-situ synthesized and incorporated onto the surface of graphene oxide (GO) by simple sonication method. The prepared material (ZIF-67/GO) was characterized by FTIR, XRD, SEM, and Raman spectroscopy. Afterwards, a sensing platform was made by drop-casting synthesized composite onto glassy carbon electrode for individual and simultaneous detection of heavy metal ions pollutants (Hg 2+ , Zn 2+ , Pb 2+ , and Cr 3+ ) with estimated detection limits of 2 nM, 1 nM, 5 nM, and 0.6 nM, respectively, when determined simultaneously, that are below the permissible limit by World Health Organization. To the best of our knowledge, this is first report of HMIs detection by ZIF-67 incorporated GO sensor which can successfully determine the Hg +2 , Zn +2 , Pb +2 , and Cr +3 ions simultaneously with lower detection limits.
(© 2023. The Author(s), under exclusive licence to Springer Nature Switzerland AG.)
Databáze: MEDLINE
Externí odkaz: