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<p>The photo-Fenton process is a promising technology for wastewater treatment. In this work, a photo-Fenton catalyst, Ag<sub>3</sub>[Fe(CN)<sub>6</sub>], was synthesized by ion-exchange between AgNO<sub>3</sub> and K<sub>3</sub>[Fe(CN)<sub>6</sub>]. In the presence of H<sub>2</sub>O<sub>2</sub>, this catalyst could degrade rhodamine B (RhB) and reactive orange 16 (RO) under visible light irradiation. The degradation of both dyes was studied as a function of initial dye concentration, catalyst loading, H<sub>2</sub>O<sub>2</sub> concentration, and initial pH. Results from trapping experiments confirmed that the hydroxyl radical was the dominant reactive species involved in the photo-Fenton degradation of the dyes. Mass spectrometry confirmed that the Ag<sub>3</sub>[Fe(CN)<sub>6</sub>] can degrade both RhB and RO into lower mass species. The obtained results showed that Ag<sub>3</sub>[Fe(CN)<sub>6</sub>] was a promising photo-Fenton catalyst that could degrade dyes in aqueous solution under visible light irradiation.</p>

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Photo-Fenton degradation of dyes by Ag3[Fe(CN)6]

  • 期刊论文

  • 发表日期：

    2025年3月25日

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  • Pimpaporn Sriprang,
  • Sumetha Suwanboon,
  • Pongsaton Amornpitoksuk

摘要

The photo-Fenton process is a promising technology for wastewater treatment. In this work, a photo-Fenton catalyst, Ag3[Fe(CN)6], was synthesized by ion-exchange between AgNO3 and K3[Fe(CN)6]. In the presence of H2O2, this catalyst could degrade rhodamine B (RhB) and reactive orange 16 (RO) under visible light irradiation. The degradation of both dyes was studied as a function of initial dye concentration, catalyst loading, H2O2 concentration, and initial pH. Results from trapping experiments confirmed that the hydroxyl radical was the dominant reactive species involved in the photo-Fenton degradation of the dyes. Mass spectrometry confirmed that the Ag3[Fe(CN)6] can degrade both RhB and RO into lower mass species. The obtained results showed that Ag3[Fe(CN)6] was a promising photo-Fenton catalyst that could degrade dyes in aqueous solution under visible light irradiation.