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Enhanced photocatalytic, electrochemical and photoelectrochemical properties of TiO2 nanotubes arrays modified with Cu, AgCu and Bi nanoparticles obtained via radiolytic reduction
Abstract
TiO2 nanotubes arrays (NTs), obtained via electrochemical anodization of Ti foil, were modified with monometallic (Cu, Bi) and bimetallic (AgCu) nanoparticles. Different amounts of metals’ precursors were deposited on the surface of NTs by the spin-coating technique, and the reduction of metals was performed via gamma radiolysis. Surface modification of titania was studied by EDS and XPS analysis. The results show that AgCu nanoparticles exist in a Agcore-Cushell form. Photocatalytic activity was examined under UV irradiation and phenol was used as a model pollutant of water. Over 95% of phenol degradation was achieved after 60 min of irradiation for almost all examined samples, but only slight difference in degradation efficiency (about 3%) between modified and bare NTs was observed. However, the initial phenol degradation rate and TOC removal efficiency was significantly enhanced for the samples modified with 0.31 and 0.63 mol% of Bi as well as for all the samples modified with Cu and AgCu nanoparticles in comparison with bare titania nanotubes. The saturated photocurrent, under the influence of simulated solar light irradiation, for the most active Bi- and AgCu-modified samples, was over two times higher than for pristine NTs. All the examined materials were resistant towards photocorrosion processes that enables their application for long term processes induced by light.
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Authors (8)
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Paweł Mazierski mgr inż.
- Uniwersytet Gdański, Wydział Chemii Katedra Technologii Środowiska
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Zhishun Wei dr
- Hokkaido University Institute for Catalysis
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Katatrzyna SiuzdaK dr inż.
- Instytut Maszyn Przepływowych PAN Ośrodek Techniki Plazmowej i Laserowej
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N. Kouame
- Université Paris-Sud Laboratoire de Chimie Physique
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E. Kowalska
- Hokkaido University Institute for Catalysis
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Hynd Remita
- Université Paris-Sud Laboratoire de Chimie Physique
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A. Zaleska-Medynska
- Uniwersytet Gdański, Wydział Chemii Katedra Technologii Środowiska
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Full text
- Publication version
- Accepted or Published Version
- DOI:
- Digital Object Identifier (open in new tab) 10.1016/j.apsusc.2016.06.066
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Details
- Category:
- Articles
- Type:
- artykuł w czasopiśmie wyróżnionym w JCR
- Published in:
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APPLIED SURFACE SCIENCE
no. 387,
pages 89 - 102,
ISSN: 0169-4332 - Language:
- English
- Publication year:
- 2016
- Bibliographic description:
- Nischk M., Mazierski P., Wei Z., Siuzdak K., Kouame N., Kowalska E., Remita H., Zaleska-Medynska A.: Enhanced photocatalytic, electrochemical and photoelectrochemical properties of TiO2 nanotubes arrays modified with Cu, AgCu and Bi nanoparticles obtained via radiolytic reduction// APPLIED SURFACE SCIENCE. -Vol. 387, (2016), s.89-102
- DOI:
- Digital Object Identifier (open in new tab) 10.1016/j.apsusc.2016.06.066
- Verified by:
- Gdańsk University of Technology
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