Search results for: BI3YO6

• Does the low optical band gap of yellow Bi3YO6 guarantee the photocatalytical activity under visible light illumination?

  Publication

  • K. Trzciński
  • M. Szkoda
  • A. Herman
  • A. Borowska-Centkowska
  • A. Lisowska-Oleksiak

  - JOURNAL OF SOLID STATE ELECTROCHEMISTRY - Year 2018

  Bi3YO6, which is known as an ionic conductor, was tested here as an electrode and photoanode in contact with aqueous electrolytes. Bi3YO6 was deposited onto the Pt substrate and the such prepared electrode was polarized in various aqueous electrolytes. The optical energy band gap of the material equal to 1.89 eV was determined using the Kubelka-Munk function resulting from the UV-Vis spectrum (allowed indirect transition) and also...

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• Ionic liquid as morphology-directing agent of two-dimensional Bi2WO6: New insight into photocatalytic and antibacterial activity

  Publication

  • A. Pancielejko
  • J. Łuczak
  • W. Lisowski
  • G. Trykowski
  • D. Venieri
  • A. Zaleska-Medynska
  • P. Mazierski

  - APPLIED SURFACE SCIENCE - Year 2022

  An efficient and durable utilization of light to drive photocatalytic reactions still requires the overcoming of barriers. Herein, two-dimensional (2D) ultrathin IL_Bi2WO6 (IL_BWO) photocatalysts were prepared for the first time via ionic liquid-assisted hydrothermal route by adjusting the amount of tetrabutylammonium chloride [TBA][Cl], synthesis temperature and duration. IL played the role of morphology-directing agent given...

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• Novel two-step synthesis method of thin film heterojunction of BiOBr/Bi2WO6 with improved visible-light-driven photocatalytic activity

  Publication

  • A. Pancielejko
  • J. Łuczak
  • W. Lisowski
  • A. Zaleska-Medynska
  • P. Mazierski

  - APPLIED SURFACE SCIENCE - Year 2021

  A novel two-step ionic liquid assisted procedure was applied for a controllable synthesis of BiOBr/Bi2WO6 heterojunction thin films. The preparation route involved an anodic oxidation of tungsten foil and hydrothermal transformation of as-anodized oxide in the presence of bismuth precursor and ionic liquid, N-butylpyridinium bromide [BPy][Br]. The BiOBr plates with irregular shapes adhered to the surface of flower-like Bi2WO6 and...

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• Experimental and DFT insights into an eco-friendly photocatalytic system toward environmental remediation and hydrogen generation based on AgInS2 quantum dots embedded on Bi2WO6

  Publication

  • P. Parnicka
  • A. Mikolajczyk
  • H. P. Pinto
  • W. Lisowski
  • T. Klimczuk
  • G. Trykowski
  • B. Bajorowicz
  • A. Zaleska-Medynska

  - APPLIED SURFACE SCIENCE - Year 2020

  Bismuth tungstate (Bi2WO6) can work as a photocatalyst but suffers from rapid recombination of photogenerated charge carriers. Herein, density functional theory (DFT) simulations revealed that the formation of a thermodynamically stable AgInS2(112)/Bi2WO6(010) heterojunction could promote charge separation and enhance the photoactivity of Bi2WO6. To confirm these theoretical predictions, a new type of photocatalysts in the form...

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• Effect of ionic liquids on surface and photocatalytic properties of selected semiconducttors

  Publication

  • A. Pancielejko

  - Year 2022

  The main aim of this doctoral dissertation was to explain the role of ionic liquids in shaping the morphology of selected semiconductors, thereby enhancing the photocatalytic activity. In order to achieve this goal, the following research steps were taken: (i) developing synthesis methods of selected semiconductors, with particular emphasis on the electrochemical oxidation method; (ii) understanding the influence of the selected...