TiO2-Coated Optical Fibres for Groundwater Remediation
In this study, polyethylene glycol (PEG) was tested as an alternative polymer to improve the coating of TiO2 particles onto optical fibres. The addition of PEG helped dispersing effectively the particles in solution to control their deposition and therefore achieving better
properties of the coating film. Results showed that PEG increased the effectiveness of the coating and the prepared fibres showed better performance for the removal of methylene blue (MB). This was attributed to the morphological changes induced by PEG. EDX mapping of the fibre surface showed
that the addition of PEG lead to a better coverage of the fibre surface; increasing the active surface area for subsequent photocatalytic degradation. This study also showed that the light intensity, pH and initial concentration of MB have a significant influence. Finally, it was demonstrated
that the coatings using PEG were better ordered and structured; showing a distinct layer-by-layer deposition.
Keywords: Groundwater Remediation; Methylene Blue; Optical Fibre; Photocatalyst; TiO2
Document Type: Research Article
Affiliations: 1: School of Civil and Environmental Engineering, University of Technology, Sydney (UTS), City Campus, Broadway, NSW 2007, Australia 2: School of Chemical Engineering, Chonnam National University, Gwangju 61186, Korea
Publication date: 01 February 2019
- Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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