Publication date: 21st July 2025
Nanomaterials can offer unique properties due to their high surface-to-volume ratio which can be carefully tailored as a function of the selected synthetic approach and thus making them highly attractive in various applicative fields including catalysis, sensing, and remediation. In this context, a lot of efforts have been devoted to the development of sustainable solutions aimed both at reducing the dependence on fossil fuels and the concomitant depollution actions in various environments. This contribution will report on our recent research group achievements toward the design of active catalysts for environmental applications, including photoelectrochemical water splitting processes and the degradation of water pollutants. To this purpose, among the possible candidates, we focus our attention on the carbon nitride (g-CN) based composite nanomaterials prepared by hybrid fabrication routes which allow a precise control over chemical composition, size, and properties, resulting in complex structures endowed with unique characteristics. This lecture will focus on the following selected case studies: a) Pt-gCN nanocomposite architectures, prepared by electrophoretic deposition and RF-sputtering, highlighting attractive EOR performances with minimal platinum content [1]; b) CuxO-functionalized carbon rich g-CN based deposits obtained through an original multi-step plasma-assisted approach consisted in the coupling of magnetron sputtering and (RF)-sputtering, showing appealing OER electrocatalytic activity [2]; c) gCN based photocathodes was developed for the efficient generation of H2O2 to promote electro-Fenton processes for the degradation of fenitrothion (FNT), a widely used organophosphate pesticide [3].
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