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<p>In this study, non-toxic and inexpensive biosynthesized Ba-doped TiO<sub>2</sub> nanoparticles were produced using chemical and green synthesis methods. In the green synthesis method, <i>Blepharis maderaspatensis</i> leaf extract was used as a natural stabilizing and reducing agent instead of chemical reagents. The biosynthesized TiO<sub>2</sub> nanoparticles were characterized using XRD, UV–visible spectroscopy, FTIR, SEM with EDS, and HR-TEM. The crystalline tetragonal structure, anatase phase, and average crystallite size of 20–40&#xa0;nm. Methylene blue was used as a model organic pollutant to assess the photocatalytic performance of the produced samples under UV–visible light irradiation. Notably, the biosynthesized Ba-doped TiO<sub>2</sub> exhibited superior photocatalytic activity, achieving up to 96% degradation efficiency within 100&#xa0;min, outperforming both chemically and biosynthesized nanoparticles. The DPPH assay was used to assess the antioxidant capacity of the biosynthesized TiO<sub>2</sub> nanoparticles. At a concentration of 80&#xa0;μg/mL, the DPPH radical scavenging activities were 74.80% and 76.57% DPPH radical scavenging, respectively. The powerful antioxidant qualities of <i>Blepharis maderaspatensis</i> extract demonstrate its promise as a sustainable and environmentally friendly substitute for traditional synthesis methods.</p>

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Green synthesis of Ba-Doped TiO2 nanoparticles using Blepharis maderaspatensis leaf extract for enhanced photocatalytic and antioxidant activities

  • 期刊论文

  • 发表日期：

    2026年7月1日

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  • M. Anbuvannan,
  • V. Maria Vinosel,
  • S. Rajesh,
  • P. Dhatshanamurthi,
  • Karuppaiah Selvakumar,
  • D. Lakshmanan,
  • M. Ramesh,
  • Aboud Ahmed Awadh Bahajjaj,
  • Mohamed Ouladsmane

摘要

In this study, non-toxic and inexpensive biosynthesized Ba-doped TiO2 nanoparticles were produced using chemical and green synthesis methods. In the green synthesis method, Blepharis maderaspatensis leaf extract was used as a natural stabilizing and reducing agent instead of chemical reagents. The biosynthesized TiO2 nanoparticles were characterized using XRD, UV–visible spectroscopy, FTIR, SEM with EDS, and HR-TEM. The crystalline tetragonal structure, anatase phase, and average crystallite size of 20–40 nm. Methylene blue was used as a model organic pollutant to assess the photocatalytic performance of the produced samples under UV–visible light irradiation. Notably, the biosynthesized Ba-doped TiO2 exhibited superior photocatalytic activity, achieving up to 96% degradation efficiency within 100 min, outperforming both chemically and biosynthesized nanoparticles. The DPPH assay was used to assess the antioxidant capacity of the biosynthesized TiO2 nanoparticles. At a concentration of 80 μg/mL, the DPPH radical scavenging activities were 74.80% and 76.57% DPPH radical scavenging, respectively. The powerful antioxidant qualities of Blepharis maderaspatensis extract demonstrate its promise as a sustainable and environmentally friendly substitute for traditional synthesis methods.