Abuzar Khan

Herein, the synthesis of a novel composite photocatalyst, Co/CoO@Fe 2 V 4 O 13 , is reported by the deposition of CoO metal oxide nanoparticles on the surface of Fe 2 V 4 O 13 bimetallic oxide. The synthesised photocatalyst exhibited a band gap of roughly 1.8 eV, rendering it responsive to the complete visible light spectrum of the sun, thereby enabling optimal absorption of solar radiation. The Co/CoO@Fe 2 V 4 O 13 composites demonstrated an enhanced photoelectrochemical water oxidation capacity compared to pristine Fe 2 V 4 O 13 when exposed to visible light. The enhanced performance is attributed primarily to the creation of a p‐n junction at the interface of Fe 2 V 4 O 13 and Co/CoO, as well as the Z‐scheme charge transfer mechanism, which aids in the separation and transfer of photogenerated charge carriers. Light absorption by Co nanoparticles via plasmonic excitation and intra‐ and inter‐band transitions in the composite structure is also likely, resulting in increased composite efficiency. Our findings indicate that Co/CoO@Fe 2 V 4 O 13 composites show promising performance for solar water splitting applications and offer new perspectives for designing effective photocatalysts.

In the last few decades, reticular chemistry has grown significantly as a field of porous crystalline molecular materials. Scientists have attempted to create the ideal platform for analyzing distinct anions based on optical sensing techniques (chromogenic and fluorogenic) by assembling different metal-containing units with suitable organic linking molecules and different organic molecules to produce crystalline porous materials. This study presents novel platforms for anion recognition based on reticular chemistry with high selectivity, sensitivity, electronic tunability, structural recognition, strong emission, and thermal and chemical stability. The key materials for reticular chemistry, Metal-Organic Frameworks (MOFs), Zeolitic Imidazolate Frameworks (ZIFs), and Covalent-Organic Frameworks (COFs), and the pre- and post-synthetic modification of the linkers and the metal oxide clusters for the selective detection of the anions, have been discussed. The mechanisms involved in sensing are also discussed.