$TiO_{2}/SnO_{2}$ nanotubes for hydrogen generation by photoelectrochemical water splitting
PBN-AR
Instytucja
Wydział Inżynierii Materiałowej i Ceramiki (Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie)
Informacje podstawowe
Główny język publikacji
EN
Czasopismo
International Journal of Hydrogen Energy
ISSN
0360-3199
EISSN
1879-3487
Wydawca
Pergamon-Elsevier Science Ltd.
Rok publikacji
2015
Numer zeszytu
1
Strony od-do
841--851
Numer tomu
40
Link do pełnego tekstu
Identyfikator DOI
Liczba arkuszy
0.8
Autorzy
Pozostali autorzy
+ 2
Słowa kluczowe
EN
TiO2-SnO2
nanotubes
photoelectrochemical cell
superhydrophilicity
Streszczenia
Język
EN
Treść
TiO2/SnO2 nanotubes were successfully grown via electrochemical anodization of Ti-Sn 1 μm-thick films deposited onto titanium foil by means of rf sputtering. Two different viscous electrolytes, containing 1 wt% NH4F, were used: ethylene glycol (EG electrolyte), and glycerol + ethylene glycol (GL/EG electrolyte). Self-organized nanotubes prepared in the EG electrolyte exhibited very smooth walls, smaller diameter and were much longer than those obtained in GL/EG. XRD analysis revealed the mixture of anatase with smaller amount of rutile TiO2, however, in the case of EG electrolyte additional phases from the Sn-O system were observed. Contact angle measurements indicated that all the samples were hydrophobic as-prepared and transformed into superhydrophilic upon illumination. Solar-to-hydrogen efficiency was improved by incorporation of Sn up to about 2% which could be attributed to higher photocurrent density reaching 0.2 μA cm-2, longer recombination time 5-15 s and more negative flat band potential VFB = -0.5; -0.6 V. © 2014 Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
Cechy publikacji
original article
peer-reviewed
Inne
System-identifier
idp:086634
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