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<p>A facile co-precipitation strategy was employed to fabricate SrFe<sub>12</sub>O<sub>19</sub> (SF1) and Cd/Nd-SrFe<sub>12</sub>O<sub>19</sub> (SF2). The ultrasonication route was followed to prepare CNTs-based composite (SF3). The synthesized catalysts were characterized by various physiochemical techniques. Bandgap energy of pristine and doped catalyst was computed via Tauc plot and it was found out to be 2.14 and 1.86&#xa0;eV respectively. The charge transfer resistance was calculated via EIS analysis. The charge transfer resistance of the synthesized CNTs based catalyst was less (2.83 ohm) compared to other prepared catalysts. The photocatalytic activity of prepared samples was monitored for the degradation of acetylsalicylic acid and crystal violet. SF3 showed maximum degradation of acetylsalicylic acid (75.72%) and crystal violet (66.36%) compared to its counterparts. SF3 composite showed excellent activity due to more charge transfer and less recombination of electrons and holes. The fabricated composite material can be used as multipurpose catalyst for degrading organic contaminants.</p>

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Effect of the optical bandgap energy and charge transfer resistance (Rct) on the catalytic behaviour of CNTs based catalyst for photocatalytic applications

  • 期刊论文

  • 发表日期：

    2025年1月7日

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  • Zeinhom M. El-Bahy,
  • Najla AlMasoud,
  • Amna Irshad,
  • Umaira rafiq,
  • Taghrid S. Alomar,
  • Amal A. Al-wallan,
  • Muhammad Farooq Warsi

摘要

A facile co-precipitation strategy was employed to fabricate SrFe12O19 (SF1) and Cd/Nd-SrFe12O19 (SF2). The ultrasonication route was followed to prepare CNTs-based composite (SF3). The synthesized catalysts were characterized by various physiochemical techniques. Bandgap energy of pristine and doped catalyst was computed via Tauc plot and it was found out to be 2.14 and 1.86 eV respectively. The charge transfer resistance was calculated via EIS analysis. The charge transfer resistance of the synthesized CNTs based catalyst was less (2.83 ohm) compared to other prepared catalysts. The photocatalytic activity of prepared samples was monitored for the degradation of acetylsalicylic acid and crystal violet. SF3 showed maximum degradation of acetylsalicylic acid (75.72%) and crystal violet (66.36%) compared to its counterparts. SF3 composite showed excellent activity due to more charge transfer and less recombination of electrons and holes. The fabricated composite material can be used as multipurpose catalyst for degrading organic contaminants.