Silk Fibroin-Regulated Nanochannels for Flexible Hydrovoltaic Ion Sensing

Silk Fibroin-Regulated Nanochannels for Flexible Hydrovoltaic Ion Sensing

© 2024 Wiley‐VCH GmbH.

Bibliographische Detailangaben
Veröffentlicht in:Advanced materials (Deerfield Beach, Fla.). - 1998. - 36(2024), 15 vom: 19. Apr., Seite e2310260
1. Verfasser: Ge, Changlei (VerfasserIn)
Weitere Verfasser: Wang, Yongfeng, Wang, Mingxu, Zheng, Zhuo, Wang, Shuqi, Kong, Yaping, Gao, Qiang, Liu, Mengyuan, Sun, Fuqin, Li, Lianhui, Zhang, Ting
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2024
Zugriff auf das übergeordnete Werk:Advanced materials (Deerfield Beach, Fla.)
Schlagworte:Journal Article hydrovoltaic effect ion sensing nanochannel regulation silk fibroin wearable electronics
Beschreibung
Zusammenfassung:© 2024 Wiley‐VCH GmbH.
The evaporation-induced hydrovoltaic effect based on ion-selective nanochannels can theoretically be employed for high-performance ion sensing; yet, the indeterminate ion-sensing properties and the acquisition of high sensing performance are rarely explored. Herein, a controllable nanochannel regulation strategy for flexible hydrovoltaic devices with highly sensitive ion-sensing abilities is presented across a wide concentration range. By multiple dip-coating of silk fibroin (SF) on an electrospinning nylon-66 nanofiber (NNF) film, the surface polarity enhancement, the fibers size regulation with a precision of ≈25 nm, and the nanostructure firm binding are achieved simultaneously. The resultant flexible freestanding hydrovoltaic device exhibits an open circuit voltage up to 4.82 V in deionized water, a wide ion sensing range of 10-7 to 100 m, and ultrahigh sensitivity as high as 1.37 V dec-1, which is significantly higher than the sensitivity of the traditional solid-contact ion-selective electrodes (SC-ISEs). The fabricated flexible ion-sensitive hydrovoltaic device is successfully applied for wearable human sweat electrolyte sensing and for environmental trace-ion monitoring, thereby confirming the potential application of the hydrovoltaic effect for ion sensing
Beschreibung:Date Revised 11.04.2024
published: Print-Electronic
Citation Status PubMed-not-MEDLINE
ISSN:1521-4095
DOI:10.1002/adma.202310260