Publication date: 15th December 2025
Although significant advances have been made in the understanding, fine characterization, and synthesis control of photocatalytic materials, as well as in the design of photo-reactors, some challenges still remain for the development of systems that can be effectively integrated into devices for applications in the fields of Energy, and Environment.
To overcome the main limitations of photocatalytic materials, particularly semiconductor oxides (SCs) such as TiO2, various strategies are currently being explored. Among the key challenges are (i) the enhancement of photocatalytic conversion efficiency, which involves utilizing photons more effectively, and (ii) the direct use of solar light, specifically wavelengths within the visible spectrum.
To achieve this, several strategies are under investigation (chemical doping, formation of heterojunctions between SCs, deposition of (bi-)metallic nanoparticles inducing co-catalytic and/or plasmonic effects, optimization of SC morphology (1D, 2D, 3D), modulation of surface area and porosity, association with adsorbents,…). In this context, coupling with carbon-based nanostructures is an area of significant interest.
This presentation will focus on the elaboration and optimization of TiO2 carbon-based nanostructures, such as activated carbon, nanodiamonds, and 2D nanostructures such as Few-Layer Graphene (FLG) or derivatives, such as g-C3N4, for photocatalytic applications in pollution abatement and solar fuel production (H2 production by solar-light driven photocatalytic water splitting or alcohols reforming, or gas-phase CO2 photocatalytic reduction).
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