{
  "abstract": "Understanding nanoparticle growth in complex composite systems remains a central challenge in materials chemistry. Herein, we elucidate the stepwise formation mechanism of gold nanoparticles (AuNPs) in graphene oxide (GO) aqueous systems under well defined reductive conditions. Pulse radiolysis reveals that GO significantly accelerates AuCl 4 -reduction by hydrated electrons (e aq -), thereby altering early-stage kinetics. Operando synchrotron small-angle x-ray scattering (SAXS) and time-resolved UV-vis absorption spectroscopy enable direct observation of AuNP nucleation and growth. Au(III) reduction precedes GO reduction, and nascent Au clusters preferentially anchor at GO edges through interactions with carboxyl groups, resulting in anisotropic, sizeconstrained growth. As GO becomes progressively reduced, depletion of oxygen-containing functional groups weakens interfacial stabilization and promotes nanoparticle coalescence. This stepwise mechanism integrates kinetic, spectroscopic, structural, and theoretical evidence, identifying GO as both a kinetic modulator and a spatial growth regulator. The insights provide general design principles for size-controlled nanoparticle growth in graphene-based composite systems.",
  "abstract_shown": true,
  "affiliations": [
    "Institut De Chimie Physique, ICP, UMR 8000 CNRS, Université Paris‐Saclay Orsay France",
    "State Key Laboratory of Chemistry for NBC Hazards Protection Frontiers Science Center For Rare Isotopes School of Nuclear Science and Technology Lanzhou China",
    "SWING Beamline SOLEIL Synchrotron Gif‐sur‐Yvette France",
    "LyRIDS ECE Engineering School Paris France",
    "Institut des NanoSciences de Paris, INSP, UMR 7588 CNRS Sorbonne Université Paris France",
    "Département Chimie Vivant Santé EPN 7 Conservatoire National des Arts et Métiers, CNAM Paris France"
  ],
  "article_type": "research article",
  "arxiv": null,
  "author_total": 10,
  "authors": [
    {
      "affs": [
        0
      ],
      "name": "Liran Hu",
      "orcid": "0009-0003-0649-9113"
    },
    {
      "affs": [
        0
      ],
      "name": "Carine Clavaguéra",
      "orcid": "0000-0001-5531-2333"
    },
    {
      "affs": [
        1
      ],
      "name": "Zhenpeng Cui",
      "orcid": "0000-0002-0926-6070"
    },
    {
      "affs": [
        0
      ],
      "name": "Zhiwen Jiang"
    },
    {
      "affs": [
        2
      ],
      "name": "Thomas Bizien",
      "orcid": "0000-0002-8779-7897"
    },
    {
      "affs": [
        3
      ],
      "name": "Filippo Ferdeghini",
      "orcid": "0000-0003-3292-5094"
    },
    {
      "affs": [
        0
      ],
      "name": "Nguyen‐Thi Van‐Oanh",
      "orcid": "0000-0001-7059-6696"
    },
    {
      "affs": [
        4
      ],
      "name": "Michel Goldmann",
      "orcid": "0000-0002-8587-5644"
    },
    {
      "affs": [
        3
      ],
      "name": "François Muller",
      "orcid": "0000-0001-8725-5759"
    },
    {
      "affs": [
        0,
        5
      ],
      "name": "Samy Remita",
      "orcid": "0000-0002-6547-881X"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/b0vtg7x96mxcq.bib",
  "cited_by": 0,
  "doi": "10.1002/anie.6455772",
  "fulltext_url": "https://pmc.ncbi.nlm.nih.gov/articles/PMC13725617/",
  "id": "b0vtg7x96mxcq",
  "issns": [
    "1433-7851",
    "1521-3773"
  ],
  "landing_url": "https://hal.science/hal-05761319v1",
  "language": "en",
  "licence": "CC-BY-NC-ND-4.0",
  "licence_label": "CC BY-NC-ND 4.0",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by-nc-nd/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "hal",
      "0.chim"
    ],
    [
      "hal",
      "0.phys"
    ],
    [
      "heading",
      "Hot Paper"
    ],
    [
      "heading",
      "RESEARCH ARTICLE"
    ],
    [
      "heading",
      "Research Article"
    ],
    [
      "openalex",
      "2504|Gold and Silver Nanoparticles Synthesis and Applications"
    ]
  ],
  "openalex": "W7213937033",
  "pdf_url": "https://hal.science/hal-05761319/document",
  "pmcid": "PMC13725617",
  "pmid": "42766347",
  "published": "2026-09-21",
  "publisher": "Wiley-VCH Verlag",
  "ris": "https://research.draconitic.com/paper/b0vtg7x96mxcq.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:17:39Z",
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      "url": "https://hal.science/hal-05761319v1"
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    {
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      "native_id": "PMC13725617",
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      "url": "https://doi.org/10.1002/anie.6455772"
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  "subjects": [
    {
      "field": "chemistry",
      "origin": "openalex:2504|Gold and Silver Nanoparticles Synthesis and Applications",
      "subfield": "materials-polymers"
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  ],
  "title": "Role of Graphene Oxide in the Nucleation and Growth of Gold Nanoparticles Revealed by Operando Time‐Resolved Studies",
  "title_text": "Role of Graphene Oxide in the Nucleation and Growth of Gold Nanoparticles Revealed by Operando Time‐Resolved Studies",
  "type": "peer-reviewed",
  "updated_at": "2026-11-06T12:21:48Z",
  "url": "https://research.draconitic.com/paper/b0vtg7x96mxcq",
  "venue": "Angewandte Chemie International Edition",
  "versions": []
}