Effect of Fe-N Codoping on the Optical Properties of TiO 2 for Use in Photoelectrolysis of Water

TiO nanoparticles were synthesized by green chemistry where organic solvents are replaced by an aqueous extract solution of lemongrass leaves that act as a reducer and growth-stopper agent. The nanoparticles were codoped with N-Fe to modify the absorption range in the electromagnetic spectrum and we...

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Bibliographic Details
Published in:ACS omega 2021-02, Vol.6 (7), p.4932-4938
Main Authors: Realpe Jimenez, Alvaro, Nuñez, Diana, Rojas, Nancy, Ramirez, Yulissa, Acevedo, María
Format: Article
Language:English
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Summary:TiO nanoparticles were synthesized by green chemistry where organic solvents are replaced by an aqueous extract solution of lemongrass leaves that act as a reducer and growth-stopper agent. The nanoparticles were codoped with N-Fe to modify the absorption range in the electromagnetic spectrum and were characterized by Fourier-transform infrared (FTIR), scanning electron microscopy/energy dispersive X-ray spectroscopy (SEM/EDS), and UV-vis/diffuse reflectance spectroscopy (DRS). The modified samples with Fe and N resulted in smaller nanoparticle size values than pure TiO . Similarly, the band-gap energy for doped nanoparticles decreased to 2.22 eV in relation to the value of 3.09 eV for pure TiO , due to the introduction of new energy levels.
ISSN:2470-1343
2470-1343
DOI:10.1021/acsomega.0c05981