AI Article Synopsis
- The study focused on synthesizing zirconia nanoparticles on different carbon substrates, including reduced graphene oxide, carbon nanotubes, and activated carbon, as well as a zirconia-iron oxide composite.
- The materials were characterized using various techniques like SEM, HRTEM, and XRD, revealing that the iron-zirconia-activated carbon had a unique nanorod shape.
- In terms of sensing capabilities for detecting methyl parathion, the zirconia-iron-activated carbon showed the highest sensitivity, successfully detecting low concentrations in spiked sewage samples.
Article Abstract
This study reports the synthesis of zirconia nanoparticles loaded on various carbon substrates, namely, reduced graphene oxide (Zr-r-GO), carbon nanotubes (Zr-CNT), and activated carbon (Zr-AC). In addition, a composite of zirconia-iron mixed oxide loaded on activated carbon (FeZr-AC) was also synthesized. The materials were characterized using SEM-EDX, HRTEM, FTIR, Raman spectroscopy, TGA and XRD. The FeZr-AC sample was found to have a nanorod like morphology. The samples were evaluated for their sensing potential towards methyl parathion (MP) using differential pulse voltammetry in a range of 0.0 V to -0.9 V ( Ag/AgCl) by drop casting on a glassy carbon electrode (GCE). All the modified GCEs best operated at a working potential of 0.4-0.9 V Ag/AgCl/Cl. FeZr-AC was found have the best limit of detection followed by Zr-AC, Zr-CNT and Zr-r-GO with their detection limits being 1.7 × 10 M, 17.2 ×10 M, 243.3 × 10 M and 534.0 × 10 M respectively. These materials were then used to detect MP in spiked sewage samples and showed good recoveries.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9419288 | PMC |
| http://dx.doi.org/10.1039/c9na00589g | DOI Listing |
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