{
  "abstract": "Antibiotic resistance limits infected-wound treatment and motivates the search for antibiotic-independent antibacterial materials. Here we report monodisperse PtPdCuFe high-entropy alloy (HEA) nanozymes with multi-enzyme activities, 2.14 ± 0.18 nm in diameter, prepared by oleylamine-assisted pyrolysis. We propose that synergistic metal interactions and abundant defects may endow the nanozymes with pH-gated peroxidase-like (POD-like), catalase-like (CAT-like), and superoxide dismutase-like (SOD-like) activities. At pH 5.5, the nanozymes exert POD-like activity to decompose H2O2 into hydroxyl radicals (•OH), triggering an ROS burst that destroys the bacterial wall, causes intracellular content leakage, and ultimately kills bacteria. At pH 7.4, they exert SOD- and CAT-like activities: ~84% of H2O2 was removed within 25 min and O2 rose to ~50% within 60 s, indicating potential to alleviate wound hypoxia, yet to be validated in future animal experiments. At the lowest effective concentration tested (16 µg·mL−1), bactericidal efficiencies against Escherichia coli and Staphylococcus aureus were ~56% and ~57%, respectively. At 64 µg·mL−1, killing reached ~90%, with >90% of bacteria showing severe membrane disruption and protein leakage. At this concentration, ~90% of mammalian cells remained viable and the hemolysis rate stayed below 5%.",
  "abstract_shown": true,
  "affiliations": [
    "Macao Institute of Materials Science and Engineering (MIMSE), Macau University of Science and Technology, Macao 999078, China",
    "School of Chinese Materia Medica, China Pharmaceutical University, Nanjing 211198, China",
    "State Key Laboratory of Climate System Prediction and Risk Management/Key Laboratory of Meteorological Disaster, Ministry of Education/Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters, Nanjing University of Information Science and Technology, Nanjing 210044, China",
    "School of Civil Engineering and Architecture, Anhui University of Science & Technology, Huainan 232001, China"
  ],
  "article_type": "research article",
  "arxiv": null,
  "author_total": 6,
  "authors": [
    {
      "affs": [
        0
      ],
      "name": "Jiawei Zhang"
    },
    {
      "affs": [
        0
      ],
      "name": "Zhiyuan Li",
      "orcid": "0009-0000-4930-2462"
    },
    {
      "affs": [
        0
      ],
      "name": "Weng-Chon (Max) Cheong",
      "orcid": "0000-0002-7684-2808"
    },
    {
      "affs": [
        1
      ],
      "name": "Awanisa Wubuli"
    },
    {
      "affs": [
        2
      ],
      "name": "Sitraka Ny Aina Raharivelo"
    },
    {
      "affs": [
        3
      ],
      "name": "Ziheng Chen"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/0vf4dgxx219zf.bib",
  "cited_by": 0,
  "doi": "10.3390/molecules31193506",
  "fulltext_url": "https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13666288/?tool=EBI",
  "id": "0vf4dgxx219zf",
  "issns": [
    "1420-3049"
  ],
  "landing_url": "https://europepmc.org/article/PMC/PMC13666288",
  "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": [
    [
      "openalex",
      "2505|Advanced Nanomaterials in Catalysis"
    ]
  ],
  "openalex": "W7215108404",
  "pdf_url": "https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13666288/pdf/?tool=EBI",
  "pmcid": "PMC13666288",
  "pmid": null,
  "published": "2026-10-01",
  "publisher": "MDPI AG",
  "ris": "https://research.draconitic.com/paper/0vf4dgxx219zf.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:17:31Z",
      "native_id": "PMC:PMC13666288",
      "source": "europepmc",
      "url": "https://europepmc.org/article/PMC/PMC13666288"
    },
    {
      "first_seen": "2026-10-30T12:18:42Z",
      "native_id": "10.3390/molecules31193506",
      "source": "crossref",
      "url": "https://www.mdpi.com/1420-3049/31/19/3506"
    }
  ],
  "subjects": [
    {
      "field": "chemistry",
      "origin": "openalex:2505|Advanced Nanomaterials in Catalysis",
      "subfield": "materials-polymers"
    }
  ],
  "title": "Antibacterial Performance of Defect-Enriched PtPdCuFe High-Entropy Alloy Nanozymes",
  "title_text": "Antibacterial Performance of Defect-Enriched PtPdCuFe High-Entropy Alloy Nanozymes",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T12:18:42Z",
  "url": "https://research.draconitic.com/paper/0vf4dgxx219zf",
  "venue": "Molecules (Basel, Switzerland)",
  "versions": []
}