Scholarlink

<p>The persistent presence of malachite green oxalate (MGO) in industrial effluents poses a significant threat to environment, aquatic life and human health. This study reports the synthesis of ZnO nanorods via a magnetic stirred mechanically assisted thermal decomposition method, with systematic variation in magnetic stirring durations (0, 1, and 4&#xa0;h) post heat treatment to enhance photocatalytic performance. Comprehensive characterization using XRD, FE-SEM, UV-Vis diffuse reflectance, and photoluminescence spectroscopy confirmed the formation of wurtzite-phase ZnO nanorods. Photocatalytic degradation experiments, conducted under 80&#xa0;W <i>Hg</i> bulb irradiation, revealed that increasing magnetic stirring duration led to enhanced dye degradation efficiency (4-hour stirred sample heat treated at 300&#xa0;°C). Magnetic stirring post heat treatment has tremendously increased the rate constant by ~ 64% and 115% for one hour and four hours, respectively with respect to unstirred ZnO. The percentage enhancement of rate constant with unstirred ZnO nanorods is 1.8×10<sup>3</sup>% with respect to photolysis, which further increased to 3.1×10<sup>3</sup>% and 4.1×10<sup>3</sup>% for one hour and four hours, respectively. These results highlight the critical role of magnetic stirring post heat treatment in tailoring the structural and functional properties of ZnO nanorods for effective 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

Magnetic stirring-assisted synthesis of ZnO nanorods via mechanically assisted thermal decomposition for highly efficient photocatalytic degradation of malachite green oxalate

  • 期刊论文

  • 发表日期：

    2026年5月19日

查看全文
  • Sumit Kumar,
  • Suchitra Rajput,
  • Nidhi Dureja,
  • Abhinav Mittapalli

摘要

The persistent presence of malachite green oxalate (MGO) in industrial effluents poses a significant threat to environment, aquatic life and human health. This study reports the synthesis of ZnO nanorods via a magnetic stirred mechanically assisted thermal decomposition method, with systematic variation in magnetic stirring durations (0, 1, and 4 h) post heat treatment to enhance photocatalytic performance. Comprehensive characterization using XRD, FE-SEM, UV-Vis diffuse reflectance, and photoluminescence spectroscopy confirmed the formation of wurtzite-phase ZnO nanorods. Photocatalytic degradation experiments, conducted under 80 W Hg bulb irradiation, revealed that increasing magnetic stirring duration led to enhanced dye degradation efficiency (4-hour stirred sample heat treated at 300 °C). Magnetic stirring post heat treatment has tremendously increased the rate constant by ~ 64% and 115% for one hour and four hours, respectively with respect to unstirred ZnO. The percentage enhancement of rate constant with unstirred ZnO nanorods is 1.8×103% with respect to photolysis, which further increased to 3.1×103% and 4.1×103% for one hour and four hours, respectively. These results highlight the critical role of magnetic stirring post heat treatment in tailoring the structural and functional properties of ZnO nanorods for effective wastewater treatment applications.