Abstract
Acentric Zn3Sb4CO6F6 has been synthesized by a hydrothermal technique. Single crystal X-ray diffraction study reveals that it crystallizes in cubic symmetry with a = 8.1480 (5) Å and Z = 2 (I4̅3 m). The carbon atom has tetrahedral coordination by Sb, either as an ordered structure at the center of the tetrahedron or as a disordered structure with carbon displaced toward three Sb atoms; the latter model leads to more acceptable Sb-C interatomic distances. Zn3Sb4CO6F6 has been established as the first multifunctional [M-L-C-O-F] compound, with exceptional properties, i.e., photocatalyst, adsorbent, catalyst for organic reactions, and antibacterial agent. This compound successfully degraded 89.5% of 50 mg/L methylene blue dye under solar illumination. It was also proved to be a proficient adsorbent toward Cr(VI) removal with qmax of 47.18 mg/g. The antibacterial activity was investigated by "agar cup assay" against both Gram-positive and Gram-negative bacterial strains. Zn3Sb4CO6F6 also functions as an excellent catalyst for the solvent-free Knoevenagel condensation reaction, with more than 90% yield. Theoretical investigations further proved that Zn3Sb4CO6F6 exhibits a direct band gap energy of 1.76 eV, which is consistent with the experimental findings. The synthesized compound was also characterized through fourier transform infrared spectroscopy, powder X-ray diffraction, field emission scanning electron microscopy, transmission electron microscopy, and selected area electron diffraction study.
Published Version
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