{
  "abstract": "Red mud (RM), a bauxite residue with high alkalinity and abundant iron phases, remains underutilized. Herein, a heterogeneous photo-Fenton catalyst was constructed by integrating phosphorus-doped graphitic carbon nitride (P-C₃N₄) with RM via an impregnation-thermal route. Characterizations confirmed P incorporation into the heptazine network and robust interfacial interaction between P-C₃N₄ and iron-rich RM components (hematite and goethite). The optimized P-C₃N₄/RM (3) composite exhibited an apparent band gap of 1.6 eV, markedly enhanced visible-light absorption, and improved photocurrent response versus pristine g-C₃N₄ (2.7 eV). Under visible-light/H₂O₂ conditions, the catalyst achieved 99.7% rhodamine B degradation within 120 min of irradiation, with an apparent rate constant of 0.036 min⁻¹, substantially outperforming bare g-C₃N₄, P-C₃N₄, and pristine RM. The system maintained high efficiency in the pH 3-6 range and remained active in the pH 7-9 range, and it also showed good tolerance to coexisting anions and humic acid. After three consecutive cycles, the catalyst retained 96% activity. Radical quenching and ESR analyses identified ·OH and ¹O₂ as the dominant reactive species, with Fe²⁺/Fe³⁺ cycling sustaining H₂O₂ activation. This work offers a waste-derived catalytic platform that simultaneously valorizes RM and treats dye-laden wastewater, providing a sustainable strategy for industrial solid waste management.",
  "abstract_shown": true,
  "affiliations": [
    "School of Chemistry and Chemical Engineering, Tarim University Aral Xinjiang 843300 China wuyingjuyuan@163.com.",
    "South Xinjiang Chemical Resource Utilization Engineering Laboratory, Xinjiang Production and Construction Corps Aral Xinjiang 843300 China."
  ],
  "article_type": "research article",
  "arxiv": null,
  "author_total": 2,
  "authors": [
    {
      "affs": [
        0
      ],
      "name": "Chao Wu",
      "orcid": "0009-0007-0669-8090"
    },
    {
      "affs": [
        0,
        1
      ],
      "name": "Ying Wu"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/e1hjg8bapn7q5.bib",
  "cited_by": 0,
  "doi": "10.1039/d6ra08398f",
  "fulltext_url": "https://europepmc.org/articles/PMC13687952",
  "id": "e1hjg8bapn7q5",
  "issns": [
    "2046-2069"
  ],
  "landing_url": "https://europepmc.org/article/MED/42923252",
  "language": "eng",
  "licence": "CC-BY",
  "licence_label": "CC BY",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "heading",
      "Chemistry"
    ],
    [
      "openalex",
      "2312|Advanced oxidation water treatment"
    ]
  ],
  "openalex": "W7223173447",
  "pdf_url": "https://europepmc.org/articles/PMC13687952?pdf=render",
  "pmcid": "PMC13687952",
  "pmid": "42923252",
  "published": "2026-10-22",
  "publisher": "Royal Society of Chemistry",
  "ris": "https://research.draconitic.com/paper/e1hjg8bapn7q5.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:20:33Z",
      "native_id": "MED:42923252",
      "source": "europepmc",
      "url": "https://europepmc.org/article/MED/42923252"
    },
    {
      "first_seen": "2026-11-07T12:23:37Z",
      "native_id": "PMC13687952",
      "source": "pmc",
      "url": "https://doi.org/10.1039/d6ra08398f"
    }
  ],
  "subjects": [
    {
      "field": "earth",
      "origin": "openalex:2312|Advanced oxidation water treatment",
      "subfield": "hydrology-soils"
    }
  ],
  "title": "Preparation of P-C₃N₄/red mud composites for enhanced photo-Fenton degradation of rhodamine B.",
  "title_text": "Preparation of P-C₃N₄/red mud composites for enhanced photo-Fenton degradation of rhodamine B.",
  "type": "peer-reviewed",
  "updated_at": "2026-11-08T12:21:06Z",
  "url": "https://research.draconitic.com/paper/e1hjg8bapn7q5",
  "venue": "RSC advances",
  "versions": []
}