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

Department of Energy and Materials Engineering

Research output: Contribution to journal › Article › peer-review

30 Scopus citations

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
State	Published - 2017

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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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doi = "10.1039/c7cp05523d",

language = "English",

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pages = "28207--28215",

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publisher = "Royal Society of Chemistry",

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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

Y1 - 2017

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

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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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