| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 592592 | Colloids and Surfaces A: Physicochemical and Engineering Aspects | 2014 | 6 Pages |
•PA6/TiO2/PVP composite nanofibers were prepared by electrospinning–electrospraying.•PA6/TiO2/PANI composite nanofibers show superior ammonia sensing properties.•p–n junction was formed at the interface between PANI and TiO2.•The p–n junction promoted the improvement of ammonia sensing properties.
Polyamide 6/titanium dioxide (PA6/TiO2) composite nanofibers were prepared as templates via electrospinning–electrospraying process, in which TiO2 nanoparticles were inserted into PA6 nanofibers mat, and then PA6/TiO2/polyaniline (PANI) composite nanofibers were fabricated by in-situ polymerization of aniline. Structural and morphological of the prepared composite nanofibers were carried out through scanning electron microscope (SEM), Fourier transform infrared spectroscopy (FT-IR) and X-ray diffraction (XRD). Their abilities to detect ammonia were evaluated by a home-made test system. It was found that p–n junction was formed at the interface between PANI and TiO2. And due to the p–n junction, the PA6/TiO2/PANI composite nanofibers exhibited good reproducibility, selectivity and apparent improvement in response than that of PA6/PANI composite nanofibers.
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