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Nano Research 2017, 10(8): 2667-2682 https://doi.org/10.1007/s12274-017-1469-7
Research Article | Issue | Published: 03 May 2017

One-pot synthesis of MoSe2 hetero-dimensional hybrid self-assembled by nanodots and nanosheets for electrocatalytic hydrogen evolution and photothermal therapy

Show Author's Information Baoguang Mao1,2,  Tao Bao3,  Jie Yu3,  Lirong Zheng4,  Jinwen Qin1,2,  Wenyan Yin3( ),  Minhua Cao1,2( )
Key Laboratory of Cluster Science, Ministry of Education of ChinaSchool of Chemistry and Chemical Engineering, Beijing Institute of TechnologyBeijing100081China
Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion MaterialsSchool of Chemistry and Chemical Engineering, Beijing Institute of TechnologyBeijing100081China
CAS Key Laboratory for Biomedical Effects of Nanomaterials and NanosafetyInstitute of High Energy Physics, Chinese Academy of SciencesBeijing100049China
Institute of High Energy PhysicsChinese Academy of SciencesBeijing100049China
Keywords:
hydrogen evolution reaction, photothermal therapy, molybdenum selenide, layered transition metal dichalcogenides, hetero-dimensional hybrid
Cite this article:
Mao B, Bao T, Yu J, et al. One-pot synthesis of MoSe2 hetero-dimensional hybrid self-assembled by nanodots and nanosheets for electrocatalytic hydrogen evolution and photothermal therapy. Nano Research, 2017, 10(8): 2667-2682. https://doi.org/10.1007/s12274-017-1469-7
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Abstract Full text Electronic supplementary material About this article

We designed and prepared a hetero-dimensional hybrid (HDH) based on molybdenum selenide (MoSe2) nanodots (NDs) anchored in few-layer MoSe2 nanosheets (NSs) (MoSe2 HDH) via a one-pot hydrothermal process. The MoSe2 HDH exhibits excellent electrocatalytic activity toward hydrogen evolution reaction (HER). This is because, on the one hand, the edge-abundant features of MoSe2 NDs and the unique defect-rich structure at the interface of MoSe2 NSs/NDs could bring in more active sites for HER; on the other hand, the random stacking of the flake-like MoSe2 NSs on the surface of the supporting electrode may achieve efficient charge transport. Additionally, the MoSe2 HDH shows good water stability, desirable biocompatibility, and high near infrared (NIR) photothermal conversion efficiency. Therefore, the MoSe2 HDH is investigated as a nanomedicine in NIR photothermal therapy (PTT) for cancer. Specifically, the MoSe2 HDH can be applied as a dual-modal probe for computed tomography (CT) and photoacoustic tomography (PA) imaging owing to its strong X-ray attenuation ability and NIR absorption. Therefore, the MoSe2 HDH, combining PTT with CT/PA imaging into one system, holds great potential for imaging-guided cancer theranostics. This work may provide an ingenious strategy to prepare other hetero-dimensional layered transition metal dichalcogenides.


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About this article

One-pot synthesis of MoSe2 hetero-dimensional hybrid self-assembled by nanodots and nanosheets for electrocatalytic hydrogen evolution and photothermal therapy

Show Author's information Baoguang Mao1,2, Tao Bao3, Jie Yu3, Lirong Zheng4, Jinwen Qin1,2, Wenyan Yin3( ), Minhua Cao1,2( )
Key Laboratory of Cluster Science, Ministry of Education of ChinaSchool of Chemistry and Chemical Engineering, Beijing Institute of TechnologyBeijing100081China
Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion MaterialsSchool of Chemistry and Chemical Engineering, Beijing Institute of TechnologyBeijing100081China
CAS Key Laboratory for Biomedical Effects of Nanomaterials and NanosafetyInstitute of High Energy Physics, Chinese Academy of SciencesBeijing100049China
Institute of High Energy PhysicsChinese Academy of SciencesBeijing100049China

Abstract

We designed and prepared a hetero-dimensional hybrid (HDH) based on molybdenum selenide (MoSe2) nanodots (NDs) anchored in few-layer MoSe2 nanosheets (NSs) (MoSe2 HDH) via a one-pot hydrothermal process. The MoSe2 HDH exhibits excellent electrocatalytic activity toward hydrogen evolution reaction (HER). This is because, on the one hand, the edge-abundant features of MoSe2 NDs and the unique defect-rich structure at the interface of MoSe2 NSs/NDs could bring in more active sites for HER; on the other hand, the random stacking of the flake-like MoSe2 NSs on the surface of the supporting electrode may achieve efficient charge transport. Additionally, the MoSe2 HDH shows good water stability, desirable biocompatibility, and high near infrared (NIR) photothermal conversion efficiency. Therefore, the MoSe2 HDH is investigated as a nanomedicine in NIR photothermal therapy (PTT) for cancer. Specifically, the MoSe2 HDH can be applied as a dual-modal probe for computed tomography (CT) and photoacoustic tomography (PA) imaging owing to its strong X-ray attenuation ability and NIR absorption. Therefore, the MoSe2 HDH, combining PTT with CT/PA imaging into one system, holds great potential for imaging-guided cancer theranostics. This work may provide an ingenious strategy to prepare other hetero-dimensional layered transition metal dichalcogenides.

Keywords: hydrogen evolution reaction, photothermal therapy, molybdenum selenide, layered transition metal dichalcogenides, hetero-dimensional hybrid

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Publication history
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Acknowledgements

Publication history

Received: 12 October 2016
Revised: 31 December 2016
Accepted: 02 January 2017
Published: 03 May 2017
Issue date: August 2017

Copyright

© Tsinghua University Press and Springer-Verlag Berlin Heidelberg 2017

Acknowledgements

Acknowledgements

This work was financially supported by the National Natural Science Foundation of China (Nos. 21601014, 21471016, and 21271023) and the 111 Project (No. B07012). This work was also financially supported by the Beijing Natural Science Foundation (No. 2162046) and National Basic Research Program of China (No. 2016YFA0201603). The authors would like to thank the Analysis & Testing Center of Beijing Institute of Technology for performing FESEM and TEM measurements.

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