Journal
SENSORS
Volume 22, Issue 22, Pages -Publisher
MDPI
DOI: 10.3390/s22228895
Keywords
square wave anodic stripping voltammetry; heavy metal ions; D-valine functionalized Fe3O4
Funding
- Department of Science and Technology, Technology Development Transfer Division under the Device Development Program (DDP) [DST/TDT/DDP-33/2018]
- SEED money from REVA university [RU:EST:CHE:2021/22]
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In this study, researchers functionalized inexpensive and environmentally friendly Fe3O4 nanoparticles with D-valine using a co-precipitation synthetic approach. The resulting Fe3O4-D-Val sensor exhibited ultra-sensitive detection of Cd+2, Pb+2, and Cu+2 in water samples, with detection limits much lower than those suggested by the World Health Organization.
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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