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

doi:10.1039/c7cp05523d

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 journal › Article › peer-review

29 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 language	English
Pages (from-to)	28207-28215
Number of pages	9
Journal	Physical Chemistry Chemical Physics
Volume	19
Issue number	41
DOIs	https://doi.org/10.1039/c7cp05523d
Publication status	Published - 2017
Externally published	Yes

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Han, H., Kim, K. M., Lee, C. W., Lee, C. S., Pawar, R. C., Jones, J. L., Hong, Y. R., Ryu, J. H., Song, T., Kang, S. H., Choi, H., & Mhin, S. (2017). Few-layered metallic 1T-MoS₂/TiO₂ with exposed (001) facets: Two-dimensional nanocomposites for enhanced photocatalytic activities. Physical Chemistry Chemical Physics, 19(41), 28207-28215. https://doi.org/10.1039/c7cp05523d

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

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.",

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

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year = "2017",

doi = "10.1039/c7cp05523d",

language = "English",

volume = "19",

pages = "28207--28215",

journal = "Physical Chemistry Chemical Physics",

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T1 - Few-layered metallic 1T-MoS2/TiO2 with exposed (001) facets

T2 - Two-dimensional nanocomposites for enhanced photocatalytic activities

AU - Han, Hyuksu

AU - Kim, Kang Min

AU - Lee, Chan Woo

AU - Lee, Caroline S.

AU - Pawar, Rajendra C.

AU - Jones, Jacob L.

AU - Hong, Yu Rim

AU - Ryu, Jeong Ho

AU - Song, Taeseup

AU - Kang, Suk Hyun

AU - Choi, Heechae

AU - Mhin, Sungwook

PY - 2017

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N2 - 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.

AB - 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.

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DO - 10.1039/c7cp05523d

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AN - SCOPUS:85032641318

SN - 1463-9076

VL - 19

SP - 28207

EP - 28215

JO - Physical Chemistry Chemical Physics

JF - Physical Chemistry Chemical Physics

IS - 41

ER -

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

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