Activating MoS 2 with Super-High Nitrogen-Doping Concentration as Efficient Catalyst for Hydrogen Evolution Reaction

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Activating MoS 2 with Super-High Nitrogen-Doping Concentration as Efficient Catalyst for Hydrogen Evolution Reaction. / Yang, Qian; Wang, Zegao; Dong, Lichun; Zhao, Wenbin; Jin, Yan; Fang, Liang; Hu, Baoshan; Dong, Mingdong.

In: Journal of Physical Chemistry C, Vol. 123, No. 17, 05.2019, p. 10917-10925.

Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

Harvard

Yang, Q, Wang, Z, Dong, L, Zhao, W, Jin, Y, Fang, L, Hu, B & Dong, M 2019, 'Activating MoS 2 with Super-High Nitrogen-Doping Concentration as Efficient Catalyst for Hydrogen Evolution Reaction', Journal of Physical Chemistry C, vol. 123, no. 17, pp. 10917-10925. https://doi.org/10.1021/acs.jpcc.9b00059

APA

Yang, Q., Wang, Z., Dong, L., Zhao, W., Jin, Y., Fang, L., Hu, B., & Dong, M. (2019). Activating MoS 2 with Super-High Nitrogen-Doping Concentration as Efficient Catalyst for Hydrogen Evolution Reaction. Journal of Physical Chemistry C, 123(17), 10917-10925. https://doi.org/10.1021/acs.jpcc.9b00059

CBE

MLA

Vancouver

Yang Q, Wang Z, Dong L, Zhao W, Jin Y, Fang L et al. Activating MoS 2 with Super-High Nitrogen-Doping Concentration as Efficient Catalyst for Hydrogen Evolution Reaction. Journal of Physical Chemistry C. 2019 May;123(17):10917-10925. https://doi.org/10.1021/acs.jpcc.9b00059

Author

Yang, Qian ; Wang, Zegao ; Dong, Lichun ; Zhao, Wenbin ; Jin, Yan ; Fang, Liang ; Hu, Baoshan ; Dong, Mingdong. / Activating MoS 2 with Super-High Nitrogen-Doping Concentration as Efficient Catalyst for Hydrogen Evolution Reaction. In: Journal of Physical Chemistry C. 2019 ; Vol. 123, No. 17. pp. 10917-10925.

Bibtex

@article{5244ec74607a4d4ba36f270a99129754,
title = "Activating MoS 2 with Super-High Nitrogen-Doping Concentration as Efficient Catalyst for Hydrogen Evolution Reaction",
abstract = " The development of nonprecious electrocatalysts with high hydrogen evolution reaction (HER) activity for water splitting is highly desirable but remains a significant challenge. Molybdenum disulfide (MoS 2 ) has been demonstrated as a good candidate; however, insufficient active sites along with poor conductivity significantly hinder the overall efficiency of MoS 2 . In this work, we present a method to activate commercial MoS 2 by high concentration nitrogen doping via a facile high-temperature treatment routine. The dominant N-doping mechanism is demonstrated to be an appropriate one-to-one substitution of sulfur atoms, which is confirmed by the approximate constancy between the atomic ratio of Mo/(S + N) and stoichiometric number of original MoS 2 . By controlling the activation time and temperature, the concentration of the doped nitrogen atoms can be tuned up to 41 atom %. The HER activity of the as-prepared materials was evaluated as electrode materials, showing that the catalytic activity is strongly correlated with the doped nitrogen concentration, and the catalytic current density of N-doped MoS 2 can reach 15 times higher than that of the pristine MoS 2 . The prominent improvement of HER performance for N-MoS 2 can be attributed to rich active sites, higher electron concentration around active sites, and ameliorative conductivity induced by N incorporation. The facile and controllable approach to activate MoS 2 for achieving high-level N-doping developed in this study can shed significant light on the preparation of heteroatoms-doped electrocatalytic materials. ",
author = "Qian Yang and Zegao Wang and Lichun Dong and Wenbin Zhao and Yan Jin and Liang Fang and Baoshan Hu and Mingdong Dong",
year = "2019",
month = may,
doi = "10.1021/acs.jpcc.9b00059",
language = "English",
volume = "123",
pages = "10917--10925",
journal = "The Journal of Physical Chemistry Part C",
issn = "1932-7447",
publisher = "American Chemical Society",
number = "17",

}

RIS

TY - JOUR

T1 - Activating MoS 2 with Super-High Nitrogen-Doping Concentration as Efficient Catalyst for Hydrogen Evolution Reaction

AU - Yang, Qian

AU - Wang, Zegao

AU - Dong, Lichun

AU - Zhao, Wenbin

AU - Jin, Yan

AU - Fang, Liang

AU - Hu, Baoshan

AU - Dong, Mingdong

PY - 2019/5

Y1 - 2019/5

N2 - The development of nonprecious electrocatalysts with high hydrogen evolution reaction (HER) activity for water splitting is highly desirable but remains a significant challenge. Molybdenum disulfide (MoS 2 ) has been demonstrated as a good candidate; however, insufficient active sites along with poor conductivity significantly hinder the overall efficiency of MoS 2 . In this work, we present a method to activate commercial MoS 2 by high concentration nitrogen doping via a facile high-temperature treatment routine. The dominant N-doping mechanism is demonstrated to be an appropriate one-to-one substitution of sulfur atoms, which is confirmed by the approximate constancy between the atomic ratio of Mo/(S + N) and stoichiometric number of original MoS 2 . By controlling the activation time and temperature, the concentration of the doped nitrogen atoms can be tuned up to 41 atom %. The HER activity of the as-prepared materials was evaluated as electrode materials, showing that the catalytic activity is strongly correlated with the doped nitrogen concentration, and the catalytic current density of N-doped MoS 2 can reach 15 times higher than that of the pristine MoS 2 . The prominent improvement of HER performance for N-MoS 2 can be attributed to rich active sites, higher electron concentration around active sites, and ameliorative conductivity induced by N incorporation. The facile and controllable approach to activate MoS 2 for achieving high-level N-doping developed in this study can shed significant light on the preparation of heteroatoms-doped electrocatalytic materials.

AB - The development of nonprecious electrocatalysts with high hydrogen evolution reaction (HER) activity for water splitting is highly desirable but remains a significant challenge. Molybdenum disulfide (MoS 2 ) has been demonstrated as a good candidate; however, insufficient active sites along with poor conductivity significantly hinder the overall efficiency of MoS 2 . In this work, we present a method to activate commercial MoS 2 by high concentration nitrogen doping via a facile high-temperature treatment routine. The dominant N-doping mechanism is demonstrated to be an appropriate one-to-one substitution of sulfur atoms, which is confirmed by the approximate constancy between the atomic ratio of Mo/(S + N) and stoichiometric number of original MoS 2 . By controlling the activation time and temperature, the concentration of the doped nitrogen atoms can be tuned up to 41 atom %. The HER activity of the as-prepared materials was evaluated as electrode materials, showing that the catalytic activity is strongly correlated with the doped nitrogen concentration, and the catalytic current density of N-doped MoS 2 can reach 15 times higher than that of the pristine MoS 2 . The prominent improvement of HER performance for N-MoS 2 can be attributed to rich active sites, higher electron concentration around active sites, and ameliorative conductivity induced by N incorporation. The facile and controllable approach to activate MoS 2 for achieving high-level N-doping developed in this study can shed significant light on the preparation of heteroatoms-doped electrocatalytic materials.

UR - http://www.scopus.com/inward/record.url?scp=85065312965&partnerID=8YFLogxK

U2 - 10.1021/acs.jpcc.9b00059

DO - 10.1021/acs.jpcc.9b00059

M3 - Journal article

AN - SCOPUS:85065312965

VL - 123

SP - 10917

EP - 10925

JO - The Journal of Physical Chemistry Part C

JF - The Journal of Physical Chemistry Part C

SN - 1932-7447

IS - 17

ER -