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Herein, a plant\u2010mediated green synthesis approach is employed for fabricating visible\u2010light\u2010responsive copper oxide\/attapulgite (CuO\/APT) nanocomposites using\n                    <jats:italic>Olea europaea<\/jats:italic>\n                    leaf extract. The one\u2010dimensional APT serves as an effective biological template to promote heterogeneous nucleation and stabilization of ultrafine CuO nanoparticles (5\u201320\u00a0nm) with enhanced visible\u2010light catalytic activity. The nanocomposites are subsequently incorporated into\u03ba\u2010carrageenan\/carboxymethyl chitosan (KC\/CC) matrices to develop advanced photocatalytic wound dressings. The strong interfacial interactions between CuO\/APT nanocomposites and biopolymer chains ensure homogeneous dispersion and improved mechanical performance. The optimal composite films exhibit good hydrophilicity with a water contact angle of 56.7\u00b0, superior moisture retention capacity of 64.9\u00a0\u00b1\u00a013.4% after 1\u00a0h drying, well\u2010balanced mechanical properties, and enhanced antibacterial effect with 99.8% inhibition rate against methicillin\u2010resistant\n                    <jats:italic>Staphylococcus aureus<\/jats:italic>\n                    . In a rat model of methicillin\u2010resistant\n                    <jats:italic>Staphylococcus aureus<\/jats:italic>\n                    \u2010infected full\u2010thickness wounds, the composite films significantly accelerated healing through effective bacterial clearance, inflammation modulation, enhanced collagen deposition, and tissue regeneration. This study provides a sustainable and scalable strategy for designing light\u2010activated wound dressings with synergistic antibacterial\/pro\u2010healing functions, offering a promising solution for combating drug\u2010resistant wound infections.\n                  <\/jats:p>","DOI":"10.1002\/smll.202511910","type":"journal-article","created":{"date-parts":[[2026,1,19]],"date-time":"2026-01-19T12:22:21Z","timestamp":1768825341000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Nano\u2010Functionalized Biopolymer Films with Green\u2010Synthesized CuO\/Attapulgite for Light\u2010Promoted Antibacterial Therapy and Wound Healing"],"prefix":"10.1002","volume":"22","author":[{"given":"Fangfang","family":"Yang","sequence":"first","affiliation":[{"name":"Key Laboratory of Clay Minerals of Gansu Province Research Center of Resource Chemistry and Energy Materials, Lanzhou Institute of Chemical Physics Chinese Academy of 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