Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
Laser induced formation of copper species over TiO2 nanotubes towards enhanced water splitting performance. / Grochowska, Katarzyna; Molenda, Zuzanna; Karczewski, Jakub; Bachmann, Julien; Darowicki, Kazimierz; Ryl, Jacek; Siuzdak, Katarzyna.
в: International Journal of Hydrogen Energy, Том 45, № 38, 31.07.2020, стр. 19192-19205.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Laser induced formation of copper species over TiO2 nanotubes towards enhanced water splitting performance
AU - Grochowska, Katarzyna
AU - Molenda, Zuzanna
AU - Karczewski, Jakub
AU - Bachmann, Julien
AU - Darowicki, Kazimierz
AU - Ryl, Jacek
AU - Siuzdak, Katarzyna
N1 - Funding Information: This work received financial support from the Polish National Science Centre : Grant No. 2017/26/E/ST5/00416 . Publisher Copyright: © 2020 Hydrogen Energy Publications LLC Copyright: Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2020/7/31
Y1 - 2020/7/31
N2 - We proposed fast and scalable route where the ordered TiO2 nanotubes coated with thin copper layers were annealed by the laser beam of 355 nm wavelength at different fluencies in the range of 15–120 mJ/cm2. As a result, copper species are integrated with the titania substrate and the formed material exhibits unique optical absorption bands in the visible range. Moreover, X-ray photoelectron spectroscopy analysis reveals the formation of Cu2O while the 4+ oxidation state of titanium is preserved. According to the electrochemical results, the material treated by laser exhibits outstanding photoelectrochemical activity comparing to the pristine titania or the one only covered by the thin copper film. In particular, when the fluence of 60 mJ/cm2 was used for the modification of the titania decorated with Cu film, the current density recorded in KOH electrolyte reaches nearly 4.5 mA/cm2 at +2.0 V vs. Ag/AgCl/0.1 M KCl upon visible light.
AB - We proposed fast and scalable route where the ordered TiO2 nanotubes coated with thin copper layers were annealed by the laser beam of 355 nm wavelength at different fluencies in the range of 15–120 mJ/cm2. As a result, copper species are integrated with the titania substrate and the formed material exhibits unique optical absorption bands in the visible range. Moreover, X-ray photoelectron spectroscopy analysis reveals the formation of Cu2O while the 4+ oxidation state of titanium is preserved. According to the electrochemical results, the material treated by laser exhibits outstanding photoelectrochemical activity comparing to the pristine titania or the one only covered by the thin copper film. In particular, when the fluence of 60 mJ/cm2 was used for the modification of the titania decorated with Cu film, the current density recorded in KOH electrolyte reaches nearly 4.5 mA/cm2 at +2.0 V vs. Ag/AgCl/0.1 M KCl upon visible light.
KW - Copper oxide
KW - Laser treatment
KW - Titania nanotubes
KW - Visible activity
KW - Water splitting
KW - OXIDATION
KW - HETEROJUNCTION
KW - THIN AU
KW - ARRAYS
KW - CU2O
KW - EVOLUTION
KW - RUTILE
KW - HYDROGEN-PRODUCTION
KW - ANATASE
KW - LAYER
UR - http://www.scopus.com/inward/record.url?scp=85085595648&partnerID=8YFLogxK
U2 - 10.1016/j.ijhydene.2020.05.054
DO - 10.1016/j.ijhydene.2020.05.054
M3 - Article
AN - SCOPUS:85085595648
VL - 45
SP - 19192
EP - 19205
JO - International Journal of Hydrogen Energy
JF - International Journal of Hydrogen Energy
SN - 0360-3199
IS - 38
ER -
ID: 70657230