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K. S., Manjunatha Kumara; Nagaraju, D. H.; Yhobu, Zhoveta; H. N., Nayan Kumar; Budagumpi, Srinivasa; Kumar Bose, Shubhankar; P., Shivakumar; Palakollu, Venkata Narayana
Sensors, 11/2022, Volume: 22, Issue: 22Journal Article
The functionalization of materials for ultrasensitive detection of heavy metal ions (HMIs) in the environment is crucial. Herewith, we have functionalized inexpensive and environmentally friendly Fe3O4 nanoparticles with D-valine (Fe3O4–D–Val) by a simple co-precipitation synthetic approach characterized by XRD, FE-SEM, and FTIR spectroscopy. The Fe3O4–D–Val sensor was used for the ultrasensitive detection of Cd+2, Pb+2, and Cu+2 in water samples. This sensor shows a very low detection limit of 11.29, 4.59, and 20.07 nM for Cd+2, Pb+2, and Cu+2, respectively. The detection limits are much lower than the values suggested by the world health Organization. The real water samples were also analyzed using the developed sensor.
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