RETURN TO ISSUEPREVResearch ArticleNEXT

Facile Formation of Self-Organized TiO2 Nanotubes in Electrolyte Containing Ionic Liquid-Ethylammonium Nitrate and Their Remarkable Photocatalytic Properties

  • Anna Pancielejko
    Anna Pancielejko
    Department of Process Engineering and Chemical Technology, Faculty of Chemistry, Gdansk University of Technology, G. Narutowicza 11/12, Gdansk 80-233, Poland
  • Paweł Mazierski*
    Paweł Mazierski
    Department of Environmental Technology, Faculty of Chemistry, University of Gdansk, Wita Stwosza 63, Gdansk 80-308, Poland
    *E-mail: [email protected]
  • Wojciech Lisowski
    Wojciech Lisowski
    Institute of Physical Chemistry, Polish Academy of Science, Kasprzaka 44/52, Warsaw 01-244, Poland
  • Adriana Zaleska-Medynska
    Adriana Zaleska-Medynska
    Department of Environmental Technology, Faculty of Chemistry, University of Gdansk, Wita Stwosza 63, Gdansk 80-308, Poland
  • Klaudia Kosek
    Klaudia Kosek
    Department of Analytical Chemistry, Faculty of Chemistry, Gdansk University of Technology, G. Narutowicza 11/12, Gdansk 80-233, Poland
  • , and 
  • Justyna Łuczak*
    Justyna Łuczak
    Department of Process Engineering and Chemical Technology, Faculty of Chemistry, Gdansk University of Technology, G. Narutowicza 11/12, Gdansk 80-233, Poland
    *E-mail: [email protected]
Cite this: ACS Sustainable Chem. Eng. 2018, 6, 11, 14510–14522
Publication Date (Web):September 18, 2018
https://doi.org/10.1021/acssuschemeng.8b03154
Copyright © 2018 American Chemical Society
Article Views
430
Altmetric
-
Citations
LEARN ABOUT THESE METRICS
Read OnlinePDF (12 MB)
Supporting Info (1)»

Abstract

The oriented TiO2 nanotube arrays (NTs) are identified as a stable, active, and recyclable photocatalytic surface. However, their photoactivity is strictly dependent on morphology (especially length), which could be controlled by anodic oxidation parameters, including electrolyte properties. To control the morphology a series of NTs were successfully synthesized by a novel approach where ionic liquid (IL), ethylammonium nitrate [EAN][NO3], was used as an addition to an organic electrolyte. Using scanning electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy, diffuse reflectance UV–vis spectroscopy, and photoluminescence spectroscopy, we are able to show how electrolyte composition influences nanotubes’ surface properties and photocatalytic activity. It was found that the change in the amount of [EAN][NO3] in the electrolyte used for anodization in the range from 0.05 to 1.0 wt % affected dynamic viscosity, conductivity, and surface tension of the electrolyte and finally altered the morphology of the formed nanotubes resulting in a proportional increase of the outer diameter and tube length from 105 to 140 nm and from 6.0 to 8.1 μm, respectively. The highest photoactivity (achieving high reaction rate constant, equal to k = 0.0941 min–1) and wettability were found for the sample prepared in the electrolyte containing 0.05 wt % of [EAN][NO3], revealing the improved ability to light photoabsorption and suppression of recombination rate. The increase of the contact angle from 9.3° to 13.1° with elongation of the tube diameter from 107 to 140 nm was also noted. It turned out that the IL_NTs’ surface became more hydrophobic when stored in air ambience over 7 weeks after fabrication with approximately 20–52°.

Supporting Information

ARTICLE SECTIONS
Jump To

The Supporting Information is available free of charge on the ACS Publications website at DOI: 10.1021/acssuschemeng.8b03154.

  • Elemental surface composition evaluated by XPS, ion chromatography results of electrolyte, and relationship between contact angle, diameter, and amount of IL (PDF)

Terms & Conditions

Most electronic Supporting Information files are available without a subscription to ACS Web Editions. Such files may be downloaded by article for research use (if there is a public use license linked to the relevant article, that license may permit other uses). Permission may be obtained from ACS for other uses through requests via the RightsLink permission system: http://pubs.acs.org/page/copyright/permissions.html.

Cited By


This article is cited by 5 publications.

  1. Anna Pancielejko, Paweł Mazierski, Wojciech Lisowski, Adriana Zaleska-Medynska, Justyna Łuczak. Ordered TiO2 Nanotubes with Improved Photoactivity through Self-organizing Anodization with the Addition of an Ionic Liquid: Effects of the Preparation Conditions. ACS Sustainable Chemistry & Engineering 2019, 7 (18) , 15585-15596. https://doi.org/10.1021/acssuschemeng.9b03589
  2. Kamel Eid, Mostafa H. Sliem, Aboubakr M. Abdullah. Tailoring the defects of sub-100 nm multipodal titanium nitride/oxynitride nanotubes for efficient water splitting performance. Nanoscale Advances 2021, 3 (17) , 5016-5026. https://doi.org/10.1039/D1NA00274K
  3. Zahra Khalilian, Alireza Najafi Chermahini, Mohamad Mohsen Momeni, Jaleh Najafi Sarpiri, Majid Motalebian. A new catalytic system for oxidative desulfurization of model diesel by hierarchical TiO2 nanotube arrays on titanium foil. Journal of Porous Materials 2021, 28 (2) , 629-640. https://doi.org/10.1007/s10934-020-01021-9
  4. Maryam Heydari Dokoohaki, Fatemeh Mohammadpour, Amin Reza Zolghadr. New insight into electrosynthesis of ordered TiO 2 nanotubes in EG-based electrolyte solutions: combined experimental and computational assessment. Physical Chemistry Chemical Physics 2020, 22 (39) , 22719-22727. https://doi.org/10.1039/D0CP03684F
  5. Sarenqiqige Bao, Haiou Liang, Chunping Li, Jie Bai. A heterostructure BiOCl nanosheets/TiO2 hollow-tubes composite for visible light-driven efficient photodegradation antibiotic. Journal of Photochemistry and Photobiology A: Chemistry 2020, 397 , 112590. https://doi.org/10.1016/j.jphotochem.2020.112590