Aller au menu Aller au contenu
Physico chemistry of solids, thin films, biotechnologies
Applications for micro & nano- technologies, energy, health ...

> Research > Research-NanoMAT

Publication by the NNS Team

Published on January 20, 2022
A+Augmenter la taille du texteA-Réduire la taille du texteImprimer le documentEnvoyer cette page par mail cet article Facebook Twitter Linked In
Communique from January 20, 2022 to April 7, 2022

The article entitled "Enhanced photocatalytic activity of chemically deposited ZnO nanowires using doping and annealing strategies for water remediation" has been published in Applied Surface Science.

ASSGaffuri2022

ASSGaffuri2022

Here you will find the article by the NNS Team:
"Water pollution represents one of the most challenging ecological threats humankind faces nowadays, resulting in the fast growing development of the heterogeneous photocatalysis using ZnO nanowires. A typical approach to improve the photocatalytic activity consists in achieving their extrinsic doping with group-III elements, but the reasons accounting for the resulting, modified photocatalytic processes are multifactorial and still under debate. In this work, we investigate the effect of the Al and Ga doping of ZnO nanowires grown by chemical bath deposition and of the thermal annealing under oxygen atmosphere on their photocatalytic activity and establish the dependence of the photocatalytic processes on their structural morphology, dimensions, dopant-induced defects, surface properties, and optical absorption and emission. We reveal that the photocatalytic processes strongly depend on the nature of dopants and are systematically enhanced after thermal annealing. The photocatalytic activity of annealed, Al-doped ZnO nanowires is found to be more efficient, through the direct action of holes besides the efficient action of radicals in the degradation process of organic dyes. These findings show the significance of decoupling the intricate contributions to the photocatalytic activity of ZnO nanowires when the extrinsic doping is used and of thoroughly selecting the nature of dopants."
A+Augmenter la taille du texteA-Réduire la taille du texteImprimer le documentEnvoyer cette page par mail cet article Facebook Twitter Linked In

Date of update January 20, 2022

Université Grenoble Alpes