There are strong demands for high biocidal and degassing performance of fibrous air filters, and the development of photocatalytic nanofiber operating under visible-light remains a challenge. We present a novel technique for the fabrication of TiO2 nanofibers (NFs) with Ag components concentrated on the fiber surface by inducing electrohydrodynamic transportation of Ag+ during electrospinning with negative electric potential. Unique localized Ag components on the surface of TiO2 were beneficial for providing visible-light-response ability, and for offering small crystallite size, low-bandgap energy and recombination rate for fast and efficient photocatalytic reaction in air media. As consequences, optimized Ag/TiO2 NFs exhibited remarkable ability for airborne bacteria and virus inactivation, as well as notable photocatalytic activity toward acetaldehydes under visible light. Moreover, this study presents a systematic comparison of Ag/TiO2 NFs and Ag/TiO2 NPs prepared by different electric potential and electrohydrodynamic methods.
|Journal||Applied Surface Science|
|Publication status||Published - 2022 Oct 15|
Bibliographical noteFunding Information:
This work was supported by the Technology Innovation Program (20007027, Mutually beneficial cooperative air purifying automobiles against atmospheric fine particles) funded By the Ministry of Trade, Industry & Energy (MOTIE, Korea).
© 2022 Elsevier B.V.
All Science Journal Classification (ASJC) codes
- Condensed Matter Physics
- Physics and Astronomy(all)
- Surfaces and Interfaces
- Surfaces, Coatings and Films