{
  "abstract": "Efficient seawater lithium harvesting requires adsorbents combining high selectivity with scalable, low-energy fabrication. Although H₂TiO₃ lithium-ion sieves (HTO-LIS) exhibit exceptional Li⁺ selectivity, their deployment is hindered by strict alkaline requirements and reliance on energy-intensive shaping processes such as freeze-drying. Herein, we report a cellulose nanofibril (CNF) composite aerogel addressing both challenges simultaneously. Ammonium phytate (AP), a bio-derived polyphosphate, serves a dual function: as a green crosslinker for CNF and as an in situ alkalinity generator, creating a localized alkaline microenvironment around immobilized HTO nanoparticles that enables efficient topotactic H⁺/Li⁺ exchange at seawater-relevant pH 8 without requiring strongly alkaline bulk conditions. Crucially, the AP-crosslinked CNF skeleton withstands capillary forces during ambient-pressure drying, preserving a hierarchical macroporous network without freeze-drying. The resulting AP-CNF@HTO monolith achieves a Li⁺ capacity of 19.08 mg g⁻¹ at pH 8, a 128.9% enhancement over pristine HTO, with excellent selectivity against competing ions in real seawater and 88.3% capacity retention after ten cycles. This work demonstrates that rational bio-based crosslinker selection can concurrently solve the alkaline microenvironment and ambient-drying challenges of HTO-LIS composites, offering an ambient-pressure-drying route with reduced reliance on energy-intensive freeze-drying for seawater lithium enrichment.",
  "abstract_shown": true,
  "affiliations": [
    "School of Science, Jiamusi University, Jiamusi 154007, China.",
    "Key Laboratory of Bio-Based Material Science and Technology (Ministry of Education), Northeast Forestry University, Harbin 150040, China.",
    "School of Materials Science and Engineering, Jiamusi University, Jiamusi 154007, China.",
    "School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, China."
  ],
  "article_type": "research article",
  "arxiv": null,
  "author_total": 6,
  "authors": [
    {
      "affs": [
        0
      ],
      "name": "Xueqiao Wang"
    },
    {
      "affs": [
        1
      ],
      "name": "Jing Wang"
    },
    {
      "affs": [
        1,
        2
      ],
      "name": "Wenxuan Wang"
    },
    {
      "affs": [
        1
      ],
      "name": "Ruimeng Liu"
    },
    {
      "affs": [
        3
      ],
      "name": "Yimin Shi"
    },
    {
      "affs": [
        2
      ],
      "name": "Daxin Liang",
      "orcid": "0000-0002-3220-0555"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/0n47g1dy55w9a.bib",
  "cited_by": 0,
  "doi": "10.3390/gels12100873",
  "fulltext_url": "https://europepmc.org/articles/PMC13704011",
  "id": "0n47g1dy55w9a",
  "issns": [
    "2310-2861"
  ],
  "landing_url": "https://europepmc.org/article/MED/42929908",
  "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",
      "2311|Chemical Synthesis and Characterization"
    ]
  ],
  "openalex": "W7214663496",
  "pdf_url": "https://europepmc.org/articles/PMC13704011?pdf=render",
  "pmcid": "PMC13704011",
  "pmid": "42929908",
  "published": "2026-09-28",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/0n47g1dy55w9a.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:22:01Z",
      "native_id": "MED:42929908",
      "source": "europepmc",
      "url": "https://europepmc.org/article/MED/42929908"
    }
  ],
  "subjects": [
    {
      "field": "earth",
      "origin": "openalex:2311|Chemical Synthesis and Characterization",
      "subfield": "environmental-science"
    }
  ],
  "title": "Ambient-Dried Cellulose Nanofibril/H₂TiO₃ Composite Aerogel for Enhanced Lithium Capture at Seawater-Relevant pH.",
  "title_text": "Ambient-Dried Cellulose Nanofibril/H₂TiO₃ Composite Aerogel for Enhanced Lithium Capture at Seawater-Relevant pH.",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T12:22:01Z",
  "url": "https://research.draconitic.com/paper/0n47g1dy55w9a",
  "venue": "Gels (Basel, Switzerland)",
  "versions": []
}