Thickness-dependent photocatalysis of ultra-thin mos2 film for visible-light-driven co2 reduction
Journal
Catalysts
Journal Volume
11
Journal Issue
11
Date Issued
2021
Author(s)
Huang Y.-F.
Liao K.-W.
Fahmi F.R.Z.
Modak V.A.
Tsai S.-H.
Ke S.-W.
Wang C.-H.
Chen L.-C.
Chen K.-H.
Abstract
The thickness of transition metal dichalcogenides (TMDs) plays a key role in enhancing their photocatalytic CO2 reduction activity. However, the optimum thickness of the layered TMDs that is required to achieve sufficient light absorption and excellent crystallinity has still not been definitively determined. In this work, ultra-thin molybdenum disulfide films (MoS2 TF) with 25 nm thickness presented remarkable photocatalytic activity, and the product yield increased by about 2.3 times. The photocatalytic mechanism corresponding to the TMDs’ thickness was also proposed. This work demonstrates that the thickness optimization of TMDs provides a cogent direction for the design of high-performance photocatalysts. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.
Subjects
Photocatalytic activity;Thickness optimization;Transition metal dichalcogenides;Ultra-thin molybdenum disul-fide film
Type
journal article