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<p>A waste polystyrene (WPS) based 0.5Ba(Zr<sub>0.2</sub>Ti<sub>0.8</sub>)O<sub>3</sub>-0.5(Ba<sub>0.7</sub>Sr<sub>0.3</sub>)TiO<sub>3</sub> (BZT-BST) composite film was fabricated by dissolving WPS in chloroform and incorporating BZT-BST at varying loadings of 10%, 20%, and 30 wt%. The structural and morphological properties of the resulting composite films were examined using X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM). By analysing the degradation of Rhodamine B (RhB) solution, the composite films’ piezocatalytic activity was determined. The film containing 30 wt% BZT-BST demonstrated the highest efficiency, achieving 95% degradation of a 5&#xa0;mg/L RhB solution within 3&#xa0;h. Additionally, key operational parameters influencing decolorization efficiency such as the BZT-BST loading, initial dye concentration, dye volume, and catalyst recyclability were systematically investigated. Radical scavenging experiments revealed that hydroxyl (<sup><b>.</b></sup>OH) and superoxide (O₂<sup><b>.−</b></sup>) radicals were the dominant reactive species responsible for the dye decomposition.</p>

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Waste polystyrene based 0.5Ba(Zr0.2Ti0.8)O3–0.5(Ba0.7Sr0.3)TiO3 composite films with enhanced piezocatalytic activity

  • 期刊论文

  • 发表日期：

    2026年5月29日

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  • Amal Abdulrahman

摘要

A waste polystyrene (WPS) based 0.5Ba(Zr0.2Ti0.8)O3-0.5(Ba0.7Sr0.3)TiO3 (BZT-BST) composite film was fabricated by dissolving WPS in chloroform and incorporating BZT-BST at varying loadings of 10%, 20%, and 30 wt%. The structural and morphological properties of the resulting composite films were examined using X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM). By analysing the degradation of Rhodamine B (RhB) solution, the composite films’ piezocatalytic activity was determined. The film containing 30 wt% BZT-BST demonstrated the highest efficiency, achieving 95% degradation of a 5 mg/L RhB solution within 3 h. Additionally, key operational parameters influencing decolorization efficiency such as the BZT-BST loading, initial dye concentration, dye volume, and catalyst recyclability were systematically investigated. Radical scavenging experiments revealed that hydroxyl (.OH) and superoxide (O₂.−) radicals were the dominant reactive species responsible for the dye decomposition.