Your browser doesn't support javascript.
loading
Nanopatterned Electroactive Polylactic Acid Nanofibrous MOFilters for Efficient PM0.3 Filtration and Bacterial Inhibition.
Zhu, Guiying; Li, Xinyu; Li, Xiao-Peng; Wang, An; Li, Tian; Zhu, Xuanjin; Tang, Daoyuan; Zhu, Jintuo; He, Xinjian; Li, Heguo; Li, Shihang; Zhang, Yong; Wang, Bin; Zhang, Shenghui; Xu, Huan.
Afiliación
  • Zhu G; School of Materials Science and Physics, China University of Mining and Technology, Xuzhou 221116, China.
  • Li X; School of Safety Engineering, China University of Mining and Technology, Xuzhou 221116, China.
  • Li XP; State Key Laboratory of NBC Protection for Civilian, Institute of Chemical Defense, Beijing 100191, China.
  • Wang A; School of Materials Science and Physics, China University of Mining and Technology, Xuzhou 221116, China.
  • Li T; School of Materials Science and Physics, China University of Mining and Technology, Xuzhou 221116, China.
  • Zhu X; School of Materials Science and Physics, China University of Mining and Technology, Xuzhou 221116, China.
  • Tang D; Anhui Sentai WPC Group Share Co., Ltd., Guangde 242299, China.
  • Zhu J; School of Safety Engineering, China University of Mining and Technology, Xuzhou 221116, China.
  • He X; Jiangsu Engineering Research Center of Dust Control and Occupational Protection, Xuzhou 221008, China.
  • Li H; School of Safety Engineering, China University of Mining and Technology, Xuzhou 221116, China.
  • Li S; Jiangsu Engineering Research Center of Dust Control and Occupational Protection, Xuzhou 221008, China.
  • Zhang Y; State Key Laboratory of NBC Protection for Civilian, Institute of Chemical Defense, Beijing 100191, China.
  • Wang B; Jiangsu Key Laboratory of Coal-based Greenhouse Gas Control and Utilization, Carbon Neutrality Institute, China University of Mining and Technology, Xuzhou 221008, China.
  • Zhang S; Jiangsu Engineering Research Center of Dust Control and Occupational Protection, Xuzhou 221008, China.
  • Xu H; Anhui Sentai WPC Group Share Co., Ltd., Guangde 242299, China.
ACS Appl Mater Interfaces ; 15(40): 47145-47157, 2023 Oct 11.
Article en En | MEDLINE | ID: mdl-37783451
Biodegradable polylactic acid (PLA) nanofibrous membranes (NFMs) hold great potential to address the increasing airborne particulate matter (PM) and dramatic accumulation of plastic/microplastic pollution. However, the field of PLA NFM-based filters is still in its infancy, frequently dwarfed by the bottlenecks regarding relatively low surface activity, poor electroactivity, and insufficient PM capturing mechanisms. This effort discloses a microwave-assisted approach to minute-level synthesis of dielectric ZIF-8 nanocrystals with high specific surface area (over 1012 m2/g) and ultrasmall size (∼240 nm), which were intimately anchored onto PLA nanofibers (PLA@ZIF-8) by a combined "electrospinning-electrospray" strategy. This endowed the PLA@ZIF-8 NFMs with largely increased electroactivity in terms of elevated dielectric coefficient (an increase of 202%), surface potential (up to 5.8 kV), and triboelectric properties (output voltage of 30.8 V at 10 N, 0.5 Hz). Given the profound control over morphology and electroactivity, the PLA@ZIF-8 NFMs exhibited efficient filtration of PM0.3 (97.1%, 85 L/min) with a decreased air resistance (592.5 Pa), surpassing that of the pure PLA counterpart (88.4%, 650.9 Pa). This was essentially ascribed to realization of multiple filtration mechanisms for PLA@ZIF-8 NFMs, including enhanced physical interception, polar interactions, and electrostatic adsorption, and the unique self-charging function triggered by airflow vibrations. Moreover, perfect antibacterial performance was achieved for PLA@ZIF-8, showing ultrahigh inhibition rates of 99.9 and 100% against E. coli and S. aureus, respectively. The proposed hierarchical structuring strategy, offering the multifunction integration unattainable with conventional methods, may facilitate the development of biodegradable long-term air filters.
Asunto(s)
Palabras clave

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Nanofibras Idioma: En Revista: ACS Appl Mater Interfaces Asunto de la revista: BIOTECNOLOGIA / ENGENHARIA BIOMEDICA Año: 2023 Tipo del documento: Article País de afiliación: China Pais de publicación: Estados Unidos

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Nanofibras Idioma: En Revista: ACS Appl Mater Interfaces Asunto de la revista: BIOTECNOLOGIA / ENGENHARIA BIOMEDICA Año: 2023 Tipo del documento: Article País de afiliación: China Pais de publicación: Estados Unidos