About this Abstract |
| Meeting |
2027 TMS Annual Meeting & Exhibition
|
| Symposium
|
Chemistry and Physics of Interfaces
|
| Presentation Title |
Effect of Fe Doping on the Adsorption Performance of ZnO Nanoparticles toward Congo Red: Kinetic, Isotherm and Thermodynamic Studies |
| Author(s) |
Carla Yamila Potiliski, Gustavo Raúl Kramer, Florencia Alejandra Bruera, Camila Belén Screpnek, Pedro Darío Zapata, Alicia Esther Ares |
| On-Site Speaker (Planned) |
Alicia Esther Ares |
| Abstract Scope |
Building upon a previous study demonstrating that Fe-doped ZnO nanoparticles exhibit higher Congo Red adsorption efficiency than undoped ZnO, and suggesting that Fe doping promotes more stable adsorbent–adsorbate interactions, the present work investigates the mechanism underlying this enhanced performance through kinetic, equilibrium, and thermodynamic analyses. Zn₁₋ₓFeₓO nanoparticles with x = 0 and x = 0.05 were evaluated for Congo Red adsorption. Kinetic studies were performed to determine the equilibrium time and to assess the applicability of different kinetic models. Adsorption isotherms were employed to estimate the maximum adsorption capacity, while thermodynamic analyses provided the ΔG°, ΔH°, and ΔS° parameters, allowing the assessment of process spontaneity, thermal nature, and the predominance of physisorption and/or chemisorption mechanisms. The findings contribute to elucidating the role of Fe doping in enhancing nanoparticle–adsorbate interactions and provide valuable insights for the rational design and optimization of nanoadsorbents for environmental remediation applications. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Thin Films and Interfaces, Surface Modification and Coatings, Characterization |