Synthesis of Tungsten Oxide Nanoflakes and Their Antibacterial and Photocatalytic Properties
Terminalia arjuna; bark extract; nano-flakes; reactive oxygen species; photodegradation
This current work revealed a single-step fabrication of tungsten oxide nanoflakes (WO3
NFs) with the help of Terminalia arjuna bark extract. Bioactive phytoconstituents of T. arjuna bark
extract were involved in the nucleation process and promoted the material crystalline growth in
a particular direction. The as-prepared sample thermal decomposition was analyzed by TG/DTG.
The as-prepared sample was annealed at 300 C for 2 h, and the annealed sample was characterized
by UV-Vis-DRS, FTIR, Raman, XRD, SEM, EDX, and TEM. Synthesized WO3 samples showed a
monoclinic phase of the flake-like structure with lengths of 25~230 nm and diameters of 25~120 nm.
The WO3 NFs were evaluated against S. aureus and E. coli. Over 3 mg concentrations of WO3 NFs
outperform the positive control in antibacterial activity. The pseudo-first-order kinetics of the WO3
NFs enhanced the photocatalytic performance of methylene blue (MB). These results prove that WO3
NFs have sustainable performance in antibacterial and MB degradation applications.
This current work revealed a single-step fabrication of tungsten oxide nanoflakes (WO3
NFs) with the help of Terminalia arjuna bark extract. Bioactive phytoconstituents of T. arjuna bark…
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