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Photocatalytic Crystalline and Amorphous $TiO_{2}$ Nanotubes Prepared by Electrospinning and Atomic Layer Deposition
| Content Provider | MDPI |
|---|---|
| Author | Orsolya, Kéri Zolt, án Erdélyi Anna, Szabó Kl, ára Hernádi Imre, Miklós Szilágyi Kocsis, Eszter Karajz, Dániel Attila Nagy, Zsombor Kristóf Parditka, Bence |
| Copyright Year | 2021 |
| Description | In this work core/shell composite $polymer/TiO_{2}$ nanofibers and from those $TiO_{2}$ nanotubes were prepared. First, poly(vinyl alcohol) (PVA) and poly(vinylpyrrolidone) (PVP) fibers were synthetized by electrospinning. They were covered with a 100 nm thick amorphous $TiO_{2}$ layer by atomic layer deposition at 50 °C. Later the polymer core was removed by two different methods: dissolution and annealing. In the case of dissolution in water, the as-prepared $TiO_{2}$ nanotubes remained amorphous, while when annealing was used to remove the polymers, the $TiO_{2}$ crystallized in anatase form. Due to this, the properties of amorphous and crystalline $TiO_{2}$ nanotubes with exactly the same structure and morphology could be compared. The samples were investigated by SEM-EDX, ATR-IR, UV-Vis, XRD and TG/DTA-MS. Finally, the photocatalytic properties of the $TiO_{2}$ nanotubes were studied by decomposing methyl-orange dye under UV light. According to the results, crystalline anatase $TiO_{2}$ nanotubes reached the photocatalytic performance of P25, while amorphous $TiO_{2}$ nanotubes had observable photocatalytic activity. |
| Starting Page | 5917 |
| e-ISSN | 14203049 |
| DOI | 10.3390/molecules26195917 |
| Journal | Molecules |
| Issue Number | 19 |
| Volume Number | 26 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2021-09-29 |
| Access Restriction | Open |
| Subject Keyword | Molecules Industrial Engineering Electrospinning Ald Tio2 Amorphous Nanotube Photocatalysis |
| Content Type | Text |
| Resource Type | Article |
