{"title":"浮动Ag-ZnO@PAN纳米纤维垫与光催化，压电，和等离子体功能的废水处理","authors":"Ghazale Asghari Sarabi, Morasae Samadi, Habib Bagheri, Md. Golam Kibria, Alireza Z. Moshfegh","doi":"10.1007/s11164-025-05759-2","DOIUrl":null,"url":null,"abstract":"<div><p>Adequate wastewater treatment is crucial for ensuring access to safe and sanitary water, which can be achieved through photocatalytic processes. This work elucidates the preparation of cost-effective and easily scalable polyacrylonitrile (PAN) electrospun nanofibers (NFs) as support for ZnO nanorods (NRs) photocatalysts. Then, Ag nanoparticles (NPs) were homogenously deposited on ZnO NRs/PAN NFs to prepare Ag NPs/ZnO NRs/PAN NFs samples. Photochemical and electrochemical characterization demonstrated a higher photocurrent density and stability for the Ag NPs/ZnO NRs/PAN NFs than ZnO NRs/PAN NFs. In addition, the prepared photocatalysts were utilized for the photodegradation of various dyes, including methylene blue (MB) and rhodamine B (RhB), as well as tetracycline (TC), an antibiotic serving as a model organic pollutant, under different light illumination conditions. The Ag NPs/ZnO NRs/PAN NFs demonstrated 2.4, 2.6, and 1.6 times higher photocatalytic activity than ZnO NRs/PAN for MB, RhB, and TC photodegradation under UV light, respectively. This floating and free-standing mat, with high stability, demonstrated 82% MB removal after 1 h of exposure to outdoor natural light. Mechanistic studies conducted by adding scavengers revealed that generating hot plasmonic electrons on the Ag NPs through illumination plays a pivotal role in improving the photodegradation activity of Ag NPs/ZnO NRs/PAN NFs mats. Furthermore, ultrasonic vibration was also utilized to induce piezoelectricity in the ternary Ag NPs/ZnO NRs/PAN NFs, resulting in an approximately 2.2-fold improvement in the MB photodegradation rate due to the synergistic effects of piezoelectricity and plasmonics. This durable and reusable photocatalyst, with its mechanical robustness and superior self-cleaning characteristics, is a promising system that offers a potential direction for future research and efficient wastewater treatment.</p><h3>Graphical abstract</h3>\n<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":753,"journal":{"name":"Research on Chemical Intermediates","volume":"51 11","pages":"6487 - 6514"},"PeriodicalIF":3.5000,"publicationDate":"2025-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Floating Ag-ZnO@PAN nanofiber mats with photocatalytic, piezoelectric, and plasmonic functions for wastewater treatment\",\"authors\":\"Ghazale Asghari Sarabi, Morasae Samadi, Habib Bagheri, Md. Golam Kibria, Alireza Z. Moshfegh\",\"doi\":\"10.1007/s11164-025-05759-2\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Adequate wastewater treatment is crucial for ensuring access to safe and sanitary water, which can be achieved through photocatalytic processes. This work elucidates the preparation of cost-effective and easily scalable polyacrylonitrile (PAN) electrospun nanofibers (NFs) as support for ZnO nanorods (NRs) photocatalysts. Then, Ag nanoparticles (NPs) were homogenously deposited on ZnO NRs/PAN NFs to prepare Ag NPs/ZnO NRs/PAN NFs samples. Photochemical and electrochemical characterization demonstrated a higher photocurrent density and stability for the Ag NPs/ZnO NRs/PAN NFs than ZnO NRs/PAN NFs. In addition, the prepared photocatalysts were utilized for the photodegradation of various dyes, including methylene blue (MB) and rhodamine B (RhB), as well as tetracycline (TC), an antibiotic serving as a model organic pollutant, under different light illumination conditions. The Ag NPs/ZnO NRs/PAN NFs demonstrated 2.4, 2.6, and 1.6 times higher photocatalytic activity than ZnO NRs/PAN for MB, RhB, and TC photodegradation under UV light, respectively. This floating and free-standing mat, with high stability, demonstrated 82% MB removal after 1 h of exposure to outdoor natural light. Mechanistic studies conducted by adding scavengers revealed that generating hot plasmonic electrons on the Ag NPs through illumination plays a pivotal role in improving the photodegradation activity of Ag NPs/ZnO NRs/PAN NFs mats. Furthermore, ultrasonic vibration was also utilized to induce piezoelectricity in the ternary Ag NPs/ZnO NRs/PAN NFs, resulting in an approximately 2.2-fold improvement in the MB photodegradation rate due to the synergistic effects of piezoelectricity and plasmonics. This durable and reusable photocatalyst, with its mechanical robustness and superior self-cleaning characteristics, is a promising system that offers a potential direction for future research and efficient wastewater treatment.</p><h3>Graphical abstract</h3>\\n<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>\",\"PeriodicalId\":753,\"journal\":{\"name\":\"Research on Chemical Intermediates\",\"volume\":\"51 11\",\"pages\":\"6487 - 6514\"},\"PeriodicalIF\":3.5000,\"publicationDate\":\"2025-10-07\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Research on Chemical Intermediates\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s11164-025-05759-2\",\"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":"Research on Chemical Intermediates","FirstCategoryId":"92","ListUrlMain":"https://link.springer.com/article/10.1007/s11164-025-05759-2","RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
Floating Ag-ZnO@PAN nanofiber mats with photocatalytic, piezoelectric, and plasmonic functions for wastewater treatment
Adequate wastewater treatment is crucial for ensuring access to safe and sanitary water, which can be achieved through photocatalytic processes. This work elucidates the preparation of cost-effective and easily scalable polyacrylonitrile (PAN) electrospun nanofibers (NFs) as support for ZnO nanorods (NRs) photocatalysts. Then, Ag nanoparticles (NPs) were homogenously deposited on ZnO NRs/PAN NFs to prepare Ag NPs/ZnO NRs/PAN NFs samples. Photochemical and electrochemical characterization demonstrated a higher photocurrent density and stability for the Ag NPs/ZnO NRs/PAN NFs than ZnO NRs/PAN NFs. In addition, the prepared photocatalysts were utilized for the photodegradation of various dyes, including methylene blue (MB) and rhodamine B (RhB), as well as tetracycline (TC), an antibiotic serving as a model organic pollutant, under different light illumination conditions. The Ag NPs/ZnO NRs/PAN NFs demonstrated 2.4, 2.6, and 1.6 times higher photocatalytic activity than ZnO NRs/PAN for MB, RhB, and TC photodegradation under UV light, respectively. This floating and free-standing mat, with high stability, demonstrated 82% MB removal after 1 h of exposure to outdoor natural light. Mechanistic studies conducted by adding scavengers revealed that generating hot plasmonic electrons on the Ag NPs through illumination plays a pivotal role in improving the photodegradation activity of Ag NPs/ZnO NRs/PAN NFs mats. Furthermore, ultrasonic vibration was also utilized to induce piezoelectricity in the ternary Ag NPs/ZnO NRs/PAN NFs, resulting in an approximately 2.2-fold improvement in the MB photodegradation rate due to the synergistic effects of piezoelectricity and plasmonics. This durable and reusable photocatalyst, with its mechanical robustness and superior self-cleaning characteristics, is a promising system that offers a potential direction for future research and efficient wastewater treatment.
期刊介绍：
Research on Chemical Intermediates publishes current research articles and concise dynamic reviews on the properties, structures and reactivities of intermediate species in all the various domains of chemistry.
The journal also contains articles in related disciplines such as spectroscopy, molecular biology and biochemistry, atmospheric and environmental sciences, catalysis, photochemistry and photophysics. In addition, special issues dedicated to specific topics in the field are regularly published.
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