Journal ArticleDOI
Photoeletrocatalytic activity of a Cu2O-loaded self-organized highly oriented TiO2 nanotube array electrode for 4-chlorophenol degradation.
TLDR
The improved photoeletrocatalytic activity of the TiO 2/Cu2O composite array electrode is attributed to the synergistic effect of Cu2O nanoparticles and TiO2 nanotube arrays.Abstract:
Differently sized Cu2O nanoparticles have been assembled photocatalytically on the surface of self-organized highly oriented TiO2 nanotubes obtained by anodization of a Ti sheet in fluoride-containing electrolytes. X-ray diffraction analysis identifies an anatase structure and fine preferential orientation of (101) planes. The UV-vis absorption edge of the TiO2 nanotube arrays shift to lower energy after Cu2O loading. The composite array electrode exhibits a higher photovoltage response than the TiO2 powders directly deposited on a Ti sheet. The highest photoconversion efficiencies observed for the Cu2O-loaded electrode are 17.2% and 0.82% under UV light and visible light irradiation, respectively. Especially, the composite array electrode shows a higher efficiency than the nonloaded one for the photoelectrocatalytic decomposition of 4-chlorophenol. The improved photoeletrocatalytic activity of the TiO2/Cu2O composite array electrode is attributed to the synergistic effect of Cu2O nanoparticles and TiO2 nanotube arrays. The Cu2O nanoparticles could enhance the efficiency of photon harvesting and reduce the chances of electron-hole recombination by sending the electrons to the conduction band of TiO2 nanotubes. The accumulated electrons in the conduction band of TiO2 nanotubes would reduce oxygen to form peroxides for enhanced advanced oxidation. The byproducts were identified by high-performance liquid chromatography.read more
Citations
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Journal ArticleDOI
One-dimensional titanium dioxide nanomaterials: nanotubes.
TL;DR: The present review tries to give a comprehensive and most up to date view to the field, with an emphasis on the currently most investigated anodic TiO2 nanotube arrays.
Journal ArticleDOI
A Review of Photocatalysis using Self-organized TiO2 Nanotubes and Other Ordered Oxide Nanostructures
TL;DR: The present Review focuses on TiO(2) nanotube arrays (and similar structures) that grow by self-organizing electrochemistry from a Ti metal substrate, as well as ways and means to modify critical tube properties.
Journal ArticleDOI
Synthesis and Enhanced Visible-Light Photoelectrocatalytic Activity of p−n Junction BiOI/TiO2 Nanotube Arrays
Gaopeng Dai,Jiaguo Yu,Gang Liu +2 more
TL;DR: In this paper, a self-organized BiOI/TiO2 nanotube arrays (NTs) were prepared by coating biOI on the tube wall of the selforganized TiO2 NTs using a novel impregnating−hydroxylation method.
Journal ArticleDOI
Photoanodes based on TiO2 and α-Fe2O3 for solar water splitting – superior role of 1D nanoarchitectures and of combined heterostructures
Stepan Kment,Francesca Riboni,Francesca Riboni,Šárka Paušová,Lei Wang,Lingyun Wang,Hyungkyu Han,Zdenek Hubicka,Josef Krysa,Patrik Schmuki,Patrik Schmuki,Patrik Schmuki,Radek Zboril +12 more
TL;DR: Various synthetic methods and modifying concepts of 1D-photoanodes (nanotubes, nanorods, nanofibers, nanowires) based on titania, hematite, and on α-Fe2O3/TiO2 heterostructures, for PEC applications are described.
Journal ArticleDOI
High efficient photocatalytic degradation of p-nitrophenol on a unique Cu2O/TiO2 p-n heterojunction network catalyst.
TL;DR: This study shows that under artificial solar light PNP can be effectively degraded by a Cu(2)O/TiO (2) p-n junction network which is fabricated by anodizing Cu(0) particles-loaded TiO( 2) nanotubes (NTs).
References
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Journal ArticleDOI
Enhanced Charge-Collection Efficiencies and Light Scattering in Dye-Sensitized Solar Cells Using Oriented TiO2 Nanotubes Arrays
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