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Document Details
Document Type
:
Article In Journal
Document Title
:
Thin MoS2 on TiO2 nanotube layers: An efficient co-catalyst/harvesting system for photocatalytic H-2 evolution
Thin MoS2 on TiO2 nanotube layers: An efficient co-catalyst/harvesting system for photocatalytic H-2 evolution
Document Language
:
English
Abstract
:
In the presentwork, we decorated MoS2 site-selectively at the top of anodic anatase TiO2 nanotubes (TiNTs). For this we sputter-deposited a thin layer (0.5 to 10 nm) of molybdenum onto the tops of the tubes and converted it to sulfide by a thermal treatment in H2S gas. The converted layers were characterized by SEM, XRD and XPS, and tested as an open-circuit photocatalyst for hydrogen evolution. Under AM1.5 (100 mW/cm(2)) illumination, strongly enhanced H-2 evolution activity can be observed using only a nominal 1 nm thick MoS2 decoration on top of a 6 mu m thick TiNT layer. We ascribe this strong beneficial effect to two factors: (i) the thin molybdenum sulfide on the top acts as an electron transfer mediator, i.e. as an H-2 evolution co-catalyst; and (ii) the underlying tube layer acts as a light-to-electron harvester.
ISSN
:
1388-2481
Journal Name
:
ELECTROCHEMISTRY COMMUNICATIONS
Volume
:
73
Issue Number
:
73
Publishing Year
:
1437 AH
2016 AD
Article Type
:
Article
Added Date
:
Monday, July 31, 2017
Researchers
Researcher Name (Arabic)
Researcher Name (English)
Researcher Type
Dr Grade
Email
X Zhou
Zhou, X
Researcher
M Licklederer
Licklederer, M
Researcher
p Schmuki
Schmuki, p
Researcher
Files
File Name
Type
Description
42353.pdf
pdf
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