Recent research advised that MOFs have been utilized as photocatalysts 30. The photocatalysis by MOFs is achieved by the electron transfer from the photo-excited organic ligands to metal clusters within MOFs, which is termed as ligand to cluster cost transfer (LCCT) as shown in (Fig. 11).
Photocatalytic activity of ZIF-8 and its modified derivatives have been currently explored. Jing et al. used ZIF-8 particles as photocatalyst to decompose the methylene blue (MB) under UV irradiation. ZIF-8 photocatalyst showed magnificent photocatalytic activity for methylene blue (MB) degradation under UV irradiation, which was evidenced through the detection of hydroxyl radicals by way of a fluorescence approach 12. Thanh et al. utilized iron (II) doped ZIF-8 as photocatalyst to degrade Remazol deep black B (RDB) textile dye under sunlight irradiation.
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The pristine or undoped ZIF-8 did not catalyse the degradation of RDB, while the doped (Fe-ZIF-8) exhibited a remarkable sunlight-driven photocatalytic degradation of RDB 30. ZnO@zeolitic imidazole frameworks-8 (ZnO@ZIF-8) photocatalyst exhibited high photostability and excellent photocatalytic degradation of RhB, 98.17% RhB was degraded after 12 min of UV irradiation as reported by Yang et al