The present doctoral thesis has focused the attention on the synthesis of new MOFs materials obtained either by post-synthetic interchange of previously described MOFs or by heterojunction of stable MOFs having UiO66 structure.
These materials have been applied as photocatalysts for the promising Overall Water Splitting reaction which claims to obtain H2 and O2 stoichiometrically starting from water in the absence of sacrificial agents or deposited metals nanoparticles. The new material UiO66 (Zr/Ce/Ti) showed surprising results in both UV- Visible light and sunlight irradiation conditions.
Interesting results were also obtained in the case of the core-shell named UiO66(Zr)-NH225@UiO66(Ce) which, in the presence of water, when irradiated with both ultraviolet and solar light, allowed to obtain 550 ¿mol*g-1 of H2 and 350 ¿mol*g-1 of H2 in 24 h respectively, in the same working conditions defined for UiO66 (Zr/Ce/Ti).
In this thesis was presented, for the first time, the possibility of reducing 4NP through a tandem methodology which, first, involves the production of H2 from water in the presence of methanol as a sacrificial agent and UiO66(Zr)-NH2 as a photo-catalyst, and subsequent the 4 NP reduction to 4 AP.
On the other hand, it has been shown that defective materials with UiO66 structure can selectively reduce polarized X=Y double bonds in the presence of H2 gas.
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