Photocatalytic Degradation of Crystal Violet Using Cufe₂O₄ in a Heterogeneous Photo-Fenton System with Ascorbic Acid

Authors

  • Apri Rahmanisa Chemistry Department, Faculty of Science and Education, Universitas Negeri Padang, Jl. Prof. Dr. Hamka Air Tawar Barat, Padang, Indonesia
  • Indang Dewata Chemistry Department, Faculty of Science and Education, Universitas Negeri Padang, Jl. Prof. Dr. Hamka Air Tawar Barat, Padang, Indonesia
  • Mawardi Chemistry Department, Faculty of Science and Education, Universitas Negeri Padang, Jl. Prof. Dr. Hamka Air Tawar Barat, Padang, Indonesia
  • Romy Dwipa Yamesa Away Chemistry Department, Faculty of Science and Education, Universitas Negeri Padang, Jl. Prof. Dr. Hamka Air Tawar Barat, Padang, Indonesia

DOI:

https://doi.org/10.33394/hjkk.v14i2.20190

Keywords:

Degradation, Crystal Violet, Photo-Fenton, CuFe2O4, Ascorbic Acid

Abstract

Crystal violet is a persistent dye that is difficult to remove using conventional treatment methods. This study investigates the degradation of crystal violet using a CuFe₂O₄-based heterogeneous photo-Fenton system in the presence of ascorbic acid. The novelty of this work lies in the combined use of CuFe₂O₄ and ascorbic acid to enhance redox cycling and improve degradation performance under photo-Fenton conditions. The CuFe₂O₄ catalyst was synthesized via a sol–gel method and characterized using Fourier transform infrared (FTIR) spectroscopy and X-ray diffraction (XRD), confirming the formation of a spinel structure with an average crystallite size of 38.4 nm. The degradation process was evaluated by varying pH (1–9) and hydrogen peroxide (H₂O₂) concentration (10–50 mmol/L). The optimum pH was found to be 3, achieving a degradation efficiency of 94.38%, while the optimum H₂O₂ concentration was 30 mmol/L with a degradation efficiency of 93.56%.The improved degradation performance is attributed to enhanced hydroxyl radical (•OH) generation facilitated by the interaction between CuFe₂O₄ and ascorbic acid. These results suggest that CuFe₂O₄ with ascorbic acid can improve crystal violet degradation under the tested photo-Fenton conditions.

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Published

2026-04-30

How to Cite

Rahmanisa, A., Dewata, I., Mawardi, & Away, R. D. Y. (2026). Photocatalytic Degradation of Crystal Violet Using Cufe₂O₄ in a Heterogeneous Photo-Fenton System with Ascorbic Acid. Hydrogen: Jurnal Kependidikan Kimia, 14(2). https://doi.org/10.33394/hjkk.v14i2.20190

Issue

Vol. 14 No. 2 (2026): April 2026

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Articles

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Copyright (c) 2026 Apri Rahmanisa, Indang Dewata, Mawardi, Romy Dwipa Yamesa Away

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