Fluorescence Based Comparative Sensing Behavior of the Nano-Composites of SiO<sub>2</sub> and TiO<sub>2</sub> towards Toxic Hg<sup>2+</sup> Ions
We have synthesized sulfonamide based nano-composites of SiO<sub>2</sub> and TiO<sub>2</sub> for selective and sensitive determination of toxic metal ion Hg<sup>2+</sup> in aqueous medium. Nano-composites <b>(11)</b> and <b>(12)</b> were mo...
Guardado en:
| Autores principales: | , |
|---|---|
| Formato: | article |
| Lenguaje: | EN |
| Publicado: |
MDPI AG
2021
|
| Materias: | |
| Acceso en línea: | https://doaj.org/article/64a4db65635147958821e71d27ab7652 |
| Etiquetas: |
Agregar Etiqueta
Sin Etiquetas, Sea el primero en etiquetar este registro!
|
| Sumario: | We have synthesized sulfonamide based nano-composites of SiO<sub>2</sub> and TiO<sub>2</sub> for selective and sensitive determination of toxic metal ion Hg<sup>2+</sup> in aqueous medium. Nano-composites <b>(11)</b> and <b>(12)</b> were morphologically characterized with FT-IR, solid state NMR, UV-vis, FE SEM, TEM, EDX, BET, pXRD and elemental analysis. The comparative sensing behavior, pH effect and sensor concentrations were carried out with fluorescence signaling on spectrofluorometer and nano-composites <b>(11)</b> and <b>(12)</b>, both were evaluated as “turn-on” fluorescence detector for the toxic Hg<sup>2+</sup> ions. The LODs were calculated to be 41.2 and 18.8 nM, respectively of nano-composites <b>(11)</b> and <b>(12)</b>. The detection limit of TiO<sub>2</sub> based nano-composites was found comparatively lower than the SiO<sub>2</sub> based nano-composites. |
|---|