Few-layered metallic 1T-MoS2/TiO2 with exposed (001) facets: Two-dimensional nanocomposites for enhanced photocatalytic activities

Hyuksu Han, Kang Min Kim, Chan Woo Lee, Caroline S. Lee*, Rajendra C. Pawar, Jacob L. Jones, Yu Rim Hong, Jeong Ho Ryu, Taeseup Song, Suk Hyun Kang, Heechae Choi, Sungwook Mhin

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

28 Citations (Scopus)

Abstract

Titanium dioxide (TiO2) with exposed (001) facets (TiO2(001)) has attractive photocatalytic properties. However, the high recombination rate of the photo-excited charge carriers on this surface often limits its application. Here, we report that a few-layered 1T-MoS2 coating on TiO2(001) nanosheets (abbreviated as MST) can be a promising candidate that overcomes some of the challenges of TiO2(001). Computational and experimental results demonstrate that MST as a photocatalyst exhibits a significantly low-charge recombination rate as well as excellent long-term durability. The synthesized MST 2D nanocomposites show a 31.9% increase in photocatalytic activity for hydrogen (H2) production relative to the counterpart TiO2(001). MST offers a new route for further improvement of the photocatalytic activity of TiO2 with exposed high energy facets.

Original languageEnglish
Pages (from-to)28207-28215
Number of pages9
JournalPhysical Chemistry Chemical Physics
Volume19
Issue number41
DOIs
Publication statusPublished - 2017
Externally publishedYes

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