{"title":"Rh纳米粒子修饰Ag2S纳米结构的设计与合成及其在近红外光热和光催化抗菌中的应用","authors":"Peiyi Bai, Peng Duan, Yanbin Meng, Wanli Guo and Kuankuan Xu","doi":"10.1039/D5NJ02643A","DOIUrl":null,"url":null,"abstract":"<p >This study reports the synthesis of Ag<small><sub>2</sub></small>S/Rh nanostructures for enhanced antibacterial activity through combined photothermal and photocatalytic mechanisms under near-infrared (NIR) irradiation. The nanoparticles were prepared using a facile deposition method and characterized by XRD, TEM, and XPS. Photothermal experiments demonstrated rapid and efficient temperature elevation under NIR light, with Rh decoration significantly enhancing photothermal conversion. Antibacterial activity against <em>S. pyogenes</em> and <em>P. aeruginosa</em> was evaluated, showing near-complete bacterial inactivation under optimized conditions. Mechanistic investigations confirmed that hydroxyl (˙OH) and superoxide (O<small><sub>2</sub></small>˙<small><sup>−</sup></small>) radicals, generated <em>via</em> photocatalysis, synergistically enhance bacterial inhibition. ESR spectra provided direct evidence of ROS production, correlating with reduced bacterial viability. These findings highlighted the potential of Ag<small><sub>2</sub></small>S/Rh composites as advanced materials for combating drug-resistant pathogens <em>via</em> NIR-driven photothermal and photocatalytic mechanisms.</p>","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":" 36","pages":" 15937-15947"},"PeriodicalIF":2.5000,"publicationDate":"2025-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Design and synthesis of Rh nanoparticle-decorated Ag2S nanostructures for enhanced near-infrared photothermal and photocatalytic antibacterial applications\",\"authors\":\"Peiyi Bai, Peng Duan, Yanbin Meng, Wanli Guo and Kuankuan Xu\",\"doi\":\"10.1039/D5NJ02643A\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p >This study reports the synthesis of Ag<small><sub>2</sub></small>S/Rh nanostructures for enhanced antibacterial activity through combined photothermal and photocatalytic mechanisms under near-infrared (NIR) irradiation. The nanoparticles were prepared using a facile deposition method and characterized by XRD, TEM, and XPS. Photothermal experiments demonstrated rapid and efficient temperature elevation under NIR light, with Rh decoration significantly enhancing photothermal conversion. Antibacterial activity against <em>S. pyogenes</em> and <em>P. aeruginosa</em> was evaluated, showing near-complete bacterial inactivation under optimized conditions. Mechanistic investigations confirmed that hydroxyl (˙OH) and superoxide (O<small><sub>2</sub></small>˙<small><sup>−</sup></small>) radicals, generated <em>via</em> photocatalysis, synergistically enhance bacterial inhibition. ESR spectra provided direct evidence of ROS production, correlating with reduced bacterial viability. These findings highlighted the potential of Ag<small><sub>2</sub></small>S/Rh composites as advanced materials for combating drug-resistant pathogens <em>via</em> NIR-driven photothermal and photocatalytic mechanisms.</p>\",\"PeriodicalId\":95,\"journal\":{\"name\":\"New Journal of Chemistry\",\"volume\":\" 36\",\"pages\":\" 15937-15947\"},\"PeriodicalIF\":2.5000,\"publicationDate\":\"2025-08-28\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"New Journal of Chemistry\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://pubs.rsc.org/en/content/articlelanding/2025/nj/d5nj02643a\",\"RegionNum\":3,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"CHEMISTRY, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"New Journal of Chemistry","FirstCategoryId":"92","ListUrlMain":"https://pubs.rsc.org/en/content/articlelanding/2025/nj/d5nj02643a","RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
Design and synthesis of Rh nanoparticle-decorated Ag2S nanostructures for enhanced near-infrared photothermal and photocatalytic antibacterial applications
This study reports the synthesis of Ag2S/Rh nanostructures for enhanced antibacterial activity through combined photothermal and photocatalytic mechanisms under near-infrared (NIR) irradiation. The nanoparticles were prepared using a facile deposition method and characterized by XRD, TEM, and XPS. Photothermal experiments demonstrated rapid and efficient temperature elevation under NIR light, with Rh decoration significantly enhancing photothermal conversion. Antibacterial activity against S. pyogenes and P. aeruginosa was evaluated, showing near-complete bacterial inactivation under optimized conditions. Mechanistic investigations confirmed that hydroxyl (˙OH) and superoxide (O2˙−) radicals, generated via photocatalysis, synergistically enhance bacterial inhibition. ESR spectra provided direct evidence of ROS production, correlating with reduced bacterial viability. These findings highlighted the potential of Ag2S/Rh composites as advanced materials for combating drug-resistant pathogens via NIR-driven photothermal and photocatalytic mechanisms.
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