Conductive Cu-Doped TiO2 Nanotubes for Enhanced Photoelectrochemical Methanol Oxidation and Concomitant Hydrogen Generation

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F19%3A73597814" target="_blank" >RIV/61989592:15310/19:73597814 - isvavai.cz</a>
Result on the web
<a href="https://onlinelibrary.wiley.com/doi/full/10.1002/celc.201900076" target="_blank" >https://onlinelibrary.wiley.com/doi/full/10.1002/celc.201900076</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1002/celc.201900076" target="_blank" >10.1002/celc.201900076</a>

Result language
angličtina
Original language name
Conductive Cu-Doped TiO2 Nanotubes for Enhanced Photoelectrochemical Methanol Oxidation and Concomitant Hydrogen Generation
Original language description
Cu doping in titania is usually detrimental to the material's photoconductivity, which prevents the use of this combination in photoanodes. In this work, we produce TiO2 nanotube arrays intrinsically doped with copper and establish sufficient conductivity to use them as efficient photoanodes for methanol oxidation in a photoelectrochemical hydrogen generation setting. Firstly, Cu-doped TiO2 nanotubes were produced by anodizing a Ti-Cu binary alloy. By subsequent thermal reduction of the structure in an Ar/H-2 environment, conductive copper-doped TiO2 nanotubes (TiCuTN Ar/H-2) can be achieved with an approximately 10(3) times higher conductivity than the non-reduced material. When these reduced Cu-doped TiO2 nanotubes are used as photoanode, copper species embedded in the TiO2 wall catalyze the methanol oxidation reaction. As a result of the combined effect of conductivity and catalytic effect of Cu, such reduced Cu:TiO2 nanotubes can generate a photo-current of 0.76 mA cm(-2) at 1 V vs. RHE, under AM1.5 (100 mW/Cm-2) irradiation - in a 50:50 MeOH/water solution - this is 33 times higher than for pristine Cu:TiO2 nanotubes.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10403 - Physical chemistry

Project
<a href="/en/project/EF15_003%2F0000416" target="_blank" >EF15_003/0000416: Advanced Hybrid Nanostructures for Renewable Energy Applications</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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