Publication detail

Centrifugally spun hematite Fe2O3 hollow fibers: Efficient photocatalyst for H2 generation and CO2 reduction

Joda, NN. Edelmannova, MF. Pavliñák, D. Santana, VT. Chennam, PK. Rihova, M. Kocí, K. Macak, JM.

Original Title

Centrifugally spun hematite Fe2O3 hollow fibers: Efficient photocatalyst for H2 generation and CO2 reduction

Type

journal article in Web of Science

Language

English

Original Abstract

Mesoporous hollow hematite Fe2O3 fibers were successfully synthesized through centrifugal spinning and applied in photocatalytic H2 production and CO2 reduction. Fabrication of hollow hematite fibers includes two innovative synthetic steps: i) centrifugal spinning of precursor fibers using polyvinylpyrrolidone (PVP) as a polymeric part and two different Fe precursors (iron nitrate and iron chloride), ii) annealing of these fibers using different temperatures profiles (250 degrees C and 600 degrees C) with optimized heating rates and durations. The prepared samples (FN250, FN600, FC250, and FC600) were thoroughly characterized using SEM, XRD, XPS, and Raman spectroscopy, and the obtained results were correlated with the photocatalytic performance during H2 production and CO2 reduction. The FC250 and FC600 samples, which showed a higher concentration of oxygen defects, exhibited superior photocatalytic efficiency compared to the Fe2O3 standard. The enhanced performance is attributed to the increased light absorption, improved charge separation, and surface reactivity due to oxygenrelated defects. These results highlight the potential of non-stoichiometric Fe2O3 nanofibers for environmental remediation and energy conversion applications.

Keywords

Centrifugal spinning; Fibers; Hematite; H 2 production; CO 2 reduction

Authors

Joda, NN.; Edelmannova, MF.; Pavliñák, D.; Santana, VT.; Chennam, PK.; Rihova, M.; Kocí, K.; Macak, JM.

Released

30. 3. 2025

Publisher

ELSEVIER

Location

AMSTERDAM

ISBN

1873-5584

Periodical

APPLIED SURFACE SCIENCE

Year of study

686

Number

162132

State

Kingdom of the Netherlands

Pages count

12

URL

https://www.sciencedirect.com/science/article/pii/S0169433224028484?via%3Dihub

BibTex

@article{BUT198065,
  author="David {Pavliňák} and Pavan Kumar {Chennam} and Jan {Macák} and Nasrollah {Naseri Joda} and Miroslava Filip {Edelmannová} and Vinicius Tadeu {Santana} and Martina {Říhová} and Kamila {Kočí}",
  title="Centrifugally spun hematite Fe2O3 hollow fibers: Efficient photocatalyst for H2 generation and CO2 reduction",
  journal="APPLIED SURFACE SCIENCE",
  year="2025",
  volume="686",
  number="162132",
  pages="12",
  doi="10.1016/j.apsusc.2024.162132",
  issn="1873-5584",
  url="https://www.sciencedirect.com/science/article/pii/S0169433224028484?via%3Dihub"
}