Scholarlink

<p>Herein, Sr<sub>2</sub>SnO<sub>3</sub>, Fe@Sr<sub>2</sub>SnO<sub>3</sub>, Zn@Sr<sub>2</sub>SnO<sub>3</sub>, and Fe@Zn@Sr<sub>2</sub>SnO<sub>3</sub> nanoparticles were successfully synthesized via a green hydrothermal approach, in which banana peel extract acted as an eco-friendly medium to regulate nanoparticle formation and suppress agglomeration. Structural analysis using XRD confirmed the orthorhombic perovskite phase of Sr<sub>2</sub>SnO<sub>3</sub> and indicated successful dopant incorporation, evidenced by peak shifts and lattice strain. The FESEM images reveal agglomerated nanostructures composed of quasi-spherical primary particles with rough surfaces. The optical band gaps of the produced nanoparticles were determined to be 3.68&#xa0;eV and 3.57&#xa0;eV for Sr<sub>2</sub>SnO<sub>3</sub> and Fe@Sr<sub>2</sub>SnO<sub>3</sub>, respectively. Additionally, Zn@Sr<sub>2</sub>SnO<sub>3</sub> and Fe@Zn@Sr<sub>2</sub>SnO<sub>3</sub> exhibited band gaps of 3.49&#xa0;eV and 3.28&#xa0;eV, respectively. Photoluminescence (PL) analysis demonstrated decreased emission intensities for doped samples, suggesting lower electron–hole recombination rates. These improvements translated into superior photocatalytic activity. Under solar irradiation, the degradation efficiencies of MB dye were observed as 74.71% (Sr<sub>2</sub>SnO<sub>3</sub>), 78.76% (Fe@Sr<sub>2</sub>SnO<sub>3</sub>), 84.63% (Zn@Sr<sub>2</sub>SnO<sub>3</sub>), and 96.91% (Fe@Zn@Sr<sub>2</sub>SnO<sub>3</sub>) within 120&#xa0;min. Kinetic studies confirmed pseudo-first-order behavior, while scavenger experiments identified hydroxyl radicals as the primary reactive species driving the degradation. Moreover, reusability assessments revealed excellent stability of the Fe/Zn co-doped sample over five consecutive cycles with minimal loss in activity. Overall, this work underscores the synergistic benefits of Fe and Zn co-doping and the effectiveness of green synthesis methods. The enhanced optical and photocatalytic properties make Fe@Zn@Sr<sub>2</sub>SnO<sub>3</sub> a promising candidate for solar-driven environmental remediation and sustainable wastewater treatment applications.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Enhanced solar-driven photocatalytic performance of Fe@Zn@Sr2SnO3 nanoparticles synthesized via green hydrothermal method

  • 期刊论文

  • 发表日期：

    2026年3月16日

查看全文
  • P. Selvaprakash,
  • P. Akilamudhan,
  • V. Vijayalakshmi,
  • M. Packeer Mydeen,
  • A. V.R Raksha,
  • R. V. Mangalaraja,
  • A. Arulraj

摘要

Herein, Sr2SnO3, Fe@Sr2SnO3, Zn@Sr2SnO3, and Fe@Zn@Sr2SnO3 nanoparticles were successfully synthesized via a green hydrothermal approach, in which banana peel extract acted as an eco-friendly medium to regulate nanoparticle formation and suppress agglomeration. Structural analysis using XRD confirmed the orthorhombic perovskite phase of Sr2SnO3 and indicated successful dopant incorporation, evidenced by peak shifts and lattice strain. The FESEM images reveal agglomerated nanostructures composed of quasi-spherical primary particles with rough surfaces. The optical band gaps of the produced nanoparticles were determined to be 3.68 eV and 3.57 eV for Sr2SnO3 and Fe@Sr2SnO3, respectively. Additionally, Zn@Sr2SnO3 and Fe@Zn@Sr2SnO3 exhibited band gaps of 3.49 eV and 3.28 eV, respectively. Photoluminescence (PL) analysis demonstrated decreased emission intensities for doped samples, suggesting lower electron–hole recombination rates. These improvements translated into superior photocatalytic activity. Under solar irradiation, the degradation efficiencies of MB dye were observed as 74.71% (Sr2SnO3), 78.76% (Fe@Sr2SnO3), 84.63% (Zn@Sr2SnO3), and 96.91% (Fe@Zn@Sr2SnO3) within 120 min. Kinetic studies confirmed pseudo-first-order behavior, while scavenger experiments identified hydroxyl radicals as the primary reactive species driving the degradation. Moreover, reusability assessments revealed excellent stability of the Fe/Zn co-doped sample over five consecutive cycles with minimal loss in activity. Overall, this work underscores the synergistic benefits of Fe and Zn co-doping and the effectiveness of green synthesis methods. The enhanced optical and photocatalytic properties make Fe@Zn@Sr2SnO3 a promising candidate for solar-driven environmental remediation and sustainable wastewater treatment applications.