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<p>Sonocatalysis and tribocatalysis, utilizing high-frequency vibrations and low-frequency friction, respectively, are emerging fields in environmental remediation. Sonocatalysis utilizes an ultrasonicator to generate radicals. Tribocatalysis, on the other hand, requires high frictional energy achieved through rotational energy. In present study, a centrosymmetric brownmillerite material Ca<sub>2</sub>Fe<sub>2</sub>O<sub>5</sub> was prepared by solid oxide route reaction. To analyze the phase, morphology, and vibrational modes of sample, X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), and Raman spectroscopy were employed, respectively. Furthermore, diffuse reflectance spectroscopy (DRS) and X-ray photoelectron spectroscopy (XPS) were utilized to evaluate the absorbance and chemical composition. Experiments were performed on Methylene blue (MB) dye (10 mgL⁻<sup>1</sup>). During sonocatalysis, ∼ 57% degradation efficacy was observed. In tribocatalysis, ∼ 71% degradation was observed in 12&#xa0;h. Further, parametric study was done on various rpm of 200, 400, and 600. Results indicated that as rpm was increased, degradation efficacy was enhanced.</p> Graphical Abstract <p>Mechano-catalytic active dye degradation using Ca<sub>2</sub>Fe<sub>2</sub>O<sub>5</sub>.</p>

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Sonocatalysis and tribocatalysis for dye degradation using Ca2Fe2O5

  • 期刊论文

  • 发表日期：

    2025年2月5日

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  • Abhishek Shukla,
  • Akshay Gaur,
  • Vishal Singh Chauhan,
  • Rahul Vaish

摘要

Sonocatalysis and tribocatalysis, utilizing high-frequency vibrations and low-frequency friction, respectively, are emerging fields in environmental remediation. Sonocatalysis utilizes an ultrasonicator to generate radicals. Tribocatalysis, on the other hand, requires high frictional energy achieved through rotational energy. In present study, a centrosymmetric brownmillerite material Ca2Fe2O5 was prepared by solid oxide route reaction. To analyze the phase, morphology, and vibrational modes of sample, X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), and Raman spectroscopy were employed, respectively. Furthermore, diffuse reflectance spectroscopy (DRS) and X-ray photoelectron spectroscopy (XPS) were utilized to evaluate the absorbance and chemical composition. Experiments were performed on Methylene blue (MB) dye (10 mgL⁻1). During sonocatalysis, ∼ 57% degradation efficacy was observed. In tribocatalysis, ∼ 71% degradation was observed in 12 h. Further, parametric study was done on various rpm of 200, 400, and 600. Results indicated that as rpm was increased, degradation efficacy was enhanced.

Graphical Abstract

Mechano-catalytic active dye degradation using Ca2Fe2O5.