Publication detail

Facile synthesis of WO3 fibers via centrifugal spinning as an efficient UV-and VIS-light-driven photocatalyst

HROMÁDKO, L. MOTOLA, M. ČIČMANCOVÁ, V. BULÁNEK, R. MACÁK, J.

Original Title

Facile synthesis of WO3 fibers via centrifugal spinning as an efficient UV-and VIS-light-driven photocatalyst

Type

journal article in Web of Science

Language

English

Original Abstract

This paper demonstrates, for the first time, synthesis of uniform and crystalline WO3 mesopomus fibers with a diameter of approximate to 1 mu m via centrifugal spinning. This was achieved by using a stable aqueous precursor solution based on ammonium metatungstate (AMT, (NH4)6H(2)W(12)O(40)center dot xH(2)O)) and polyvinyl pyrrolidone (PVP, (C6H9NO)(n)). Annealing at 300 degrees C for 1 h followed by an additional annealing at 500 degrees C for 6 h was conducted to obtain crystalline WO3 fibers. The resulting centrifugally spun WO3 fibers possess approx. 1.4-4 times enhancement in photocatalytic activity under UV (k = 0.0205 min(-1)) and VIS (k = 0.0109 min(-1)) light irradiation compared to that of electrospun WO3 fibers and commercially available WO3 nanoparticles. This is due to the increased specific surface area of the centrifugally spun WO3 fibers (S-BET = 22.3 m(2)/g) compared to electrospun WO3 fibers (S-BET = 7.4 m(2)/g) and WO3 nanoparticles (S-BET = 6.4 m(2)/g). On the other hand, optical properties of all tested materials (including optical band gap) were nearly the same.

Keywords

Centrifugal spinning; Fibers; WO3; Photocatalysis

Authors

HROMÁDKO, L.; MOTOLA, M.; ČIČMANCOVÁ, V.; BULÁNEK, R.; MACÁK, J.

Released

15. 12. 2021

Publisher

Elsevier

Location

OXFORD

ISBN

1873-3956

Periodical

CERAMICS INTERNATIONAL

Year of study

47

Number

24

State

United Kingdom of Great Britain and Northern Ireland

Pages from

35361

Pages to

35365

Pages count

5

URL

https://www.sciencedirect.com/science/article/pii/S0272884221028583

Full text in the Digital Library

http://hdl.handle.net/11012/203305

BibTex

@article{BUT175432,
  author="Luděk {Hromádko} and Martin {Motola} and Veronika {Čičmancová} and Roman {Bulánek} and Jan {Macák}",
  title="Facile synthesis of WO3 fibers via centrifugal spinning as an efficient UV-and VIS-light-driven photocatalyst",
  journal="CERAMICS INTERNATIONAL",
  year="2021",
  volume="47",
  number="24",
  pages="35361--35365",
  doi="10.1016/j.ceramint.2021.09.079",
  issn="1873-3956",
  url="https://www.sciencedirect.com/science/article/pii/S0272884221028583"
}