Publication detail

ALD coating of centrifugally spun polymeric fibers and postannealing: case study for nanotubular TiO2 photocatalyst

ŘÍHOVÁ, M. YURKEVICH, O. MOTOLA, M. HROMÁDKO, L. SPOTZ, Z. ZAZPE, R. KNEZ, M. MACÁK, J.

Original Title

ALD coating of centrifugally spun polymeric fibers and postannealing: case study for nanotubular TiO2 photocatalyst

Type

journal article in Web of Science

Language

English

Original Abstract

This work describes the synthesis of highly photocatalytically active TiO2 tubes (TiTBs) by combining centrifugal spinning and atomic layer deposition (ALD). Poly(vinyl pyrrolidone) (PVP) fibers were first produced by centrifugal spinning and subsequently coated with TiO2 with various film thicknesses in a fluidized bed ALD reactor. After annealing of the TiO2 ALD coated PVP fibers, TiO2 tubes (TiTBs) with excellent textural properties and diameters in the range from approx. 170 to 430 nm were obtained. The morphology and structure of all TiTBs were investigated by scanning and transmission electron microscopy (SEM and TEM), X-ray diffraction (XRD), and Brunauer-Emmett-Teller analysis (BET). Liquid phase photocatalysis was conducted to determine the photocatalytic activity of the TiTBs. The photocatalytic activity of the TiTBs obtained after 50 TiO2 ALD cycles (degradation rate 0.123 min(-1)) was twice that of the reference TiO2 P25. The underlying reasons for the remarkable photocatalytic performance were textural properties of the resulting tubes along with suitable crystallinity, embedded within the 1D tubular morphology. The herein presented proof-of-concept approach paves a way for the processing of various polymeric fibers into various tubular nanostructures.

Keywords

ATOMIC LAYER DEPOSITION; CORE-SHELL NANOFIBERS; PVP NANOFIBERS; WALL THICKNESS; ZNO; NANOSTRUCTURES; NANOPARTICLES; GROWTH; FABRICATION; MECHANISMS

Authors

ŘÍHOVÁ, M.; YURKEVICH, O.; MOTOLA, M.; HROMÁDKO, L.; SPOTZ, Z.; ZAZPE, R.; KNEZ, M.; MACÁK, J.

Released

7. 8. 2021

Publisher

Royal Society of Chemistry

Location

CAMBRIDGE

ISBN

2516-0230

Periodical

NANOSCALE ADVANCES

Year of study

3

Number

15

State

United Kingdom of Great Britain and Northern Ireland

Pages from

4589

Pages to

4596

Pages count

8

URL

https://pubs.rsc.org/en/content/articlelanding/2021/NA/D1NA00288K

Full text in the Digital Library

http://hdl.handle.net/11012/203222

BibTex

@article{BUT172858,
  author="Martina {Říhová} and Oksana {Yurkevich} and Martin {Motola} and Luděk {Hromádko} and Zdeněk {Spotz} and Raúl {Zazpe Mendioroz} and Mato {Knez} and Jan {Macák}",
  title="ALD coating of centrifugally spun polymeric fibers and postannealing: case study for nanotubular TiO2 photocatalyst",
  journal="NANOSCALE ADVANCES",
  year="2021",
  volume="3",
  number="15",
  pages="4589--4596",
  doi="10.1039/d1na00288k",
  issn="2516-0230",
  url="https://pubs.rsc.org/en/content/articlelanding/2021/NA/D1NA00288K"
}