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Ionics

, Volume 24, Issue 11, pp 3673–3684 | Cite as

Facile synthesis of α-Fe2O3/WO3 composite with an enhanced photocatalytic and photo-electrochemical performance

  • R. A. Senthil
  • A. Priya
  • J. Theerthagiri
  • A. Selvi
  • P. Nithyadharseni
  • J. MadhavanEmail author
Original Papers

Abstract

The influence of hematite iron oxide (α-Fe2O3) nanoparticles in tungsten oxide (WO3) nanorods photocatalyst on photodegradation of organic pollutant was investigated in the present work. The spherical-shaped α-Fe2O3 nanoparticles and WO3 nanorods were synthesized from citrate precursor and hydrothermal routes respectively. The different weight percentage (wt%) ratios (1, 2, and 3 wt%) of α-Fe2O3 added heterostructured α-Fe2O3/WO3 composite photocatalysts by a simple physical mixing process. The photocatalytic activities of as-synthesized photocatalysts were evaluated by photodegradation of methylene blue (MB) under visible-light irradiation. It showed that the 2% α-Fe2O3/WO3 composite exhibited excellent photocatalytic activity than the others. This enhancement could be attributed to its strong absorption in the visible region and the low recombination rate of electron-hole pairs. In addition, the photo-electrochemical measurements of the 2% α-Fe2O3/WO3 composite revealed the faster migration of the photo-excited charge-carriers. Hence, this study demonstrates the heterostructured α-Fe2O3/WO3 composite as a promising candidate for environmental remediation.

Graphical abstract

Keywords

Photocatalysis FT-IR XRD Photo-electrochemical characterizations Visible-light 

Notes

Funding information

The authors Mr. R. A. Senthil and Dr. J. Madhavan are grateful to the authorities of the Thiruvalluvar University for their support for this study.

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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  • R. A. Senthil
    • 1
    • 2
  • A. Priya
    • 1
  • J. Theerthagiri
    • 1
    • 3
  • A. Selvi
    • 4
  • P. Nithyadharseni
    • 5
    • 6
  • J. Madhavan
    • 1
    Email author
  1. 1.Solar Energy Laboratory, Department of ChemistryThiruvalluvar UniversityVelloreIndia
  2. 2.State Key Laboratory of Chemical Resource Engineering, Beijing Engineering Center for Hierarchical CatalystsBeijing University of Chemical TechnologyBeijingChina
  3. 3.Centre of Excellence for Energy Research, Centre for Nanoscience and NanotechnologySathyabama Institute of Science and Technology (Deemed to be University)ChennaiIndia
  4. 4.Environmental Molecular Microbiology Research Laboratory, Department of BiotechnologyThiruvalluvar UniversityVelloreIndia
  5. 5.Department of PhysicsNational University of SingaporeSingaporeSingapore
  6. 6.Energy Materials, Materials Science and Manufacturing (MSM)Council for Scientific and Industrial Research (CSIR)PretoriaSouth Africa

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