The environmental treatment and clean energy production represents one of the hardest challenge in the next future and the photo-catalysis represent a reliable promising solution. A further step with respect the well-known inorganic semiconductors already utilized, like titanium dioxide and zinc oxide, is represented by organic/inorganic photocatalytic materials: cheaper, more versatile in chemical and in the flexible designs. Among the others, Carbon nitride compounds are recently increased their importance for energy and sustainability applications ranging from visible-UV light harvesting and photo-catalysis, to fuel cell and catalyst supports. In this talk we will go deeper in the surface interaction among Carbon nitride and Titanium dioxide. The fundamental role of the surface termination will be shown also by the possibility to tune the crystal structure of TiO2 nanocrystal by using low intensity monochromatic lights. Specific ALD growth of hybrid samples on two different inorganic layers, alumina and titania, are discussed to outline the effects of the precursor and gas reactivity on Carbon Nitride compounds with different surface terminations. Finally, we present a new hybrid system by using an ordered mesoporous TiO2 structure and a new phenyl modified g-C3N4 compound. The strong interaction between organic compound and the surface of metal oxide nanocrystals has been utilized to enhance the catalytic performance of a new heterogeneous catalyst. The promising photocatalytic behavior will be shown and X-Ray diffraction, UV, time resolved and steady time photoluminescence, infrared and Raman spectroscopy measurements will be presented and discussed.

Carbon nitride compounds for heterogeneous photocatalysis

2019 Spring National Meeting

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