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<p>Ta<sub>2</sub>O<sub>5</sub> and Se doped Ta<sub>2</sub>O<sub>5</sub> nanocomposite materials were synthesized using the simple sol–gel technique. A sequence of (PT) 0, (1TS) 1, (3TS) 3, (5TS) 5 and (7TS) 7 weights % of Se doped Ta<sub>2</sub>O<sub>5</sub>. Nanocomposite materials were characterized by several techniques, which include XRD, UV-DRS, FTIR, HR-TEM, SEM, EDS, PL, XPS, and Raman analysis. To investigate the structural properties of the Se doped Ta<sub>2</sub>O<sub>5</sub> nanocomposite material it is matched with the hexagonal phase, which is examined through the XRD pattern. Further revealing, crystallite size lies between 32.41 and 49.97&#xa0;nm. FTIR spectroscopy examined the vibrational characteristics of the material. The optical properties were determined through the UV-DRS, revealing a bathochromic shift in the absorption edge and a bandgap energy ranging between 3.50 and 3.97&#xa0;eV. FE-SEM analysis of 3TS nanocomposite material revealed a nanosheet-like external morphology having a particle size measured at 50.37&#xa0;nm. The TEM images&#xa0;show agglomerated nanochain-like structures with an average particle size of 17.35&#xa0;nm. Using deconvoluted PL spectra of PT and 7TS, it was observed that as Se doping increases, reactive oxygen species (•OH and •O<sup>2−</sup>) are generated, causing a + 2&#xa0;nm red shift that confirms defect formation and band structure modification. The photodegradation efficiency of PT achieved 77.57%, and 7TS was the highest photocatalytic degradation efficiency, 94.84%, within 140&#xa0;min of methylene blue (MB) dye as compared to the sequence series 1TS, 3TS, PT, and 5TS, respectively. In the antibacterial activity, 5TS shows superior results for <i>E. coli</i>, as compared to <i>S. aureus</i>.</p>

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Enhanced Functional Properties of Selenium Doped Ta2O5 Nanoparticles for Sustainable Environmental Remediation and Antimicrobial Applications

  • 期刊论文

  • 发表日期：

    2026年7月11日

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  • Akshay Mahapure,
  • Akash Nagare,
  • Amol Dhadage,
  • Durga Bharat,
  • Deepak Shinde,
  • Madhukar Navgire,
  • Anil Athare,
  • Ramesh Naval

摘要

Ta2O5 and Se doped Ta2O5 nanocomposite materials were synthesized using the simple sol–gel technique. A sequence of (PT) 0, (1TS) 1, (3TS) 3, (5TS) 5 and (7TS) 7 weights % of Se doped Ta2O5. Nanocomposite materials were characterized by several techniques, which include XRD, UV-DRS, FTIR, HR-TEM, SEM, EDS, PL, XPS, and Raman analysis. To investigate the structural properties of the Se doped Ta2O5 nanocomposite material it is matched with the hexagonal phase, which is examined through the XRD pattern. Further revealing, crystallite size lies between 32.41 and 49.97 nm. FTIR spectroscopy examined the vibrational characteristics of the material. The optical properties were determined through the UV-DRS, revealing a bathochromic shift in the absorption edge and a bandgap energy ranging between 3.50 and 3.97 eV. FE-SEM analysis of 3TS nanocomposite material revealed a nanosheet-like external morphology having a particle size measured at 50.37 nm. The TEM images show agglomerated nanochain-like structures with an average particle size of 17.35 nm. Using deconvoluted PL spectra of PT and 7TS, it was observed that as Se doping increases, reactive oxygen species (•OH and •O2−) are generated, causing a + 2 nm red shift that confirms defect formation and band structure modification. The photodegradation efficiency of PT achieved 77.57%, and 7TS was the highest photocatalytic degradation efficiency, 94.84%, within 140 min of methylene blue (MB) dye as compared to the sequence series 1TS, 3TS, PT, and 5TS, respectively. In the antibacterial activity, 5TS shows superior results for E. coli, as compared to S. aureus.