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- Title
Millettia pinnata plant pod extract-mediated synthesis of Bi<sub>2</sub>O<sub>3</sub> for degradation of water pollutants.
- Authors
Meena, Parmeshwar Lal; Surela, Ajay Kumar; Saini, Jitendra Kumar; Chhachhia, Lata Kumari
- Abstract
In this study, plant extract obtained from pods of Millettia pinnata plant species was employed for nanosynthesis of Bi2O3. The as-synthesized semiconductor metal oxide nanoparticles were analyzed using various characterization tools such as X-ray diffraction (XRD), Scanning electron microscope (SEM), ultra violet-visible (UV–Vis), Fourier transform infrared (FTIR), Zeta potential, Raman, and X-ray photoelectron spectroscopy (XPS). The characterization results designate the formation of α and β forms of Bi2O3. FESEM images demonstrate rod and flake-like nanostructures ranging from 25 to 70 nm. The green synthesized nanomaterial was found efficient for reduction of 4-nitro phenol (4-NP) and 4-nitro aniline (4-NA). However, it showed better performance toward the reduction of 4-NA. Photocatalytic investigations demonstrated that the green synthesized nanophotocatalyst was capable in degrading Amido Black 10B (AB-10B) dye efficiently under visible light illumination. 98.83% degradation of AB-10B dye was achieved within 120 min of irradiation under optimum conditions of photocatalyst dose and dye concentration. Active species trapping experiments revealed prominent role of superoxide radicals (•O2−) while hydroxyl radicals (•OH) played considerable role in the AB-10B photocatalytic degradation process. Moreover, the photostability and reusability assessment study ascertained good performance of the catalyst after four runs of successive cycles.
- Subjects
MILLETTIA pinnata; WATER pollution; X-ray photoelectron spectroscopy; METAL oxide semiconductors; SCANNING electron microscopes
- Publication
Environmental Science & Pollution Research, 2022, Vol 29, Issue 52, p79253
- ISSN
0944-1344
- Publication type
Article
- DOI
10.1007/s11356-022-21435-z