Fabrication of MoS                         2                         /WSe                         2                          heterostructures as electrocatalyst for enhanced hydrogen evolution reaction

Dhanasekaran Vikraman; Sajjad Hussain; Linh Truong; K. Karuppasamy; Hyun Jung Kim; T. Maiyalagan; Seung Hyun Chun; Jongwan Jung; Hyun Seok Kim

doi:10.1016/j.apsusc.2019.02.236

Fabrication of MoS ₂ /WSe ₂ heterostructures as electrocatalyst for enhanced hydrogen evolution reaction

Dhanasekaran Vikraman
, Sajjad Hussain
, Linh Truong
, K. Karuppasamy
, Hyun Jung Kim
, T. Maiyalagan
, Seung Hyun Chun
, Jongwan Jung
, Hyun Seok Kim

Department of Electronics & Electrical Engineering

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

99 Scopus citations

Abstract

Two-dimensional material based heterostructures produce novel phenomena due to distinctive interactions between stacked layers. This paper details fabrication of van der Waals heterostructure consisting of layered MoS ₂ and WSe ₂ on FTO substrates by combining solution bath and radio-frequency sputtering. Raman scattering confirmed WSe ₂ /MoS ₂ heterostructure formation, X-ray photoelectron spectroscopy surface profile detailed the heterostructure composition, and depth profile showed heterostructure interfacial structure with stacked WSe ₂ and MoS ₂ layers on the FTO substrate. Surface properties confirmed the WSe ₂ /MoS ₂ heterostructure formed a multi-structured array of nanograins, and high resolution electron micrographs confirmed vertically formed layered fringes. Hydrogen evolution showed enhanced electrocatalytic behavior with 116 mV overpotential at 10 mA/cm ² and 76 mV/decade Tafel slope. Electrocatalytic property robustness was confirmed by over 20 h continuous hydrogen evolution reaction in an acidic solution. Enhanced electrocatalytic outcomes were due to increased interfacial hole-electron separation, dispersing active facets through the interface. The stacked layered structure provides a new avenue for two-dimensional heterostructures for energy harvesting devices.

Original language	English
Pages (from-to)	611-620
Number of pages	10
Journal	Applied Surface Science
Volume	480
DOIs	https://doi.org/10.1016/j.apsusc.2019.02.236
State	Published - 30 Jun 2019

Keywords

Electrocatalyst
Heterostructures
Hydrogen evolution
MoS
TEM
WSe

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10.1016/j.apsusc.2019.02.236

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Vikraman, D., Hussain, S., Truong, L., Karuppasamy, K., Kim, H. J., Maiyalagan, T., Chun, S. H., Jung, J., & Kim, H. S. (2019). Fabrication of MoS ₂ /WSe ₂ heterostructures as electrocatalyst for enhanced hydrogen evolution reaction Applied Surface Science, 480, 611-620. https://doi.org/10.1016/j.apsusc.2019.02.236

Vikraman, Dhanasekaran ; Hussain, Sajjad ; Truong, Linh et al. / Fabrication of MoS ₂ /WSe ₂ heterostructures as electrocatalyst for enhanced hydrogen evolution reaction In: Applied Surface Science. 2019 ; Vol. 480. pp. 611-620.

@article{82c033376d9c475b9e9f95950b4b63ef,

title = " Fabrication of MoS 2 /WSe 2 heterostructures as electrocatalyst for enhanced hydrogen evolution reaction ",

abstract = " Two-dimensional material based heterostructures produce novel phenomena due to distinctive interactions between stacked layers. This paper details fabrication of van der Waals heterostructure consisting of layered MoS 2 and WSe 2 on FTO substrates by combining solution bath and radio-frequency sputtering. Raman scattering confirmed WSe 2 /MoS 2 heterostructure formation, X-ray photoelectron spectroscopy surface profile detailed the heterostructure composition, and depth profile showed heterostructure interfacial structure with stacked WSe 2 and MoS 2 layers on the FTO substrate. Surface properties confirmed the WSe 2 /MoS 2 heterostructure formed a multi-structured array of nanograins, and high resolution electron micrographs confirmed vertically formed layered fringes. Hydrogen evolution showed enhanced electrocatalytic behavior with 116 mV overpotential at 10 mA/cm 2 and 76 mV/decade Tafel slope. Electrocatalytic property robustness was confirmed by over 20 h continuous hydrogen evolution reaction in an acidic solution. Enhanced electrocatalytic outcomes were due to increased interfacial hole-electron separation, dispersing active facets through the interface. The stacked layered structure provides a new avenue for two-dimensional heterostructures for energy harvesting devices.",

keywords = "Electrocatalyst, Heterostructures, Hydrogen evolution, MoS, TEM, WSe",

author = "Dhanasekaran Vikraman and Sajjad Hussain and Linh Truong and K. Karuppasamy and Kim, \{Hyun Jung\} and T. Maiyalagan and Chun, \{Seung Hyun\} and Jongwan Jung and Kim, \{Hyun Seok\}",

note = "Publisher Copyright: {\textcopyright} 2019 Elsevier B.V.",

year = "2019",

month = jun,

day = "30",

doi = "10.1016/j.apsusc.2019.02.236",

language = "English",

volume = "480",

pages = "611--620",

journal = "Applied Surface Science",

issn = "0169-4332",

publisher = "Elsevier B.V.",

}

Vikraman, D, Hussain, S, Truong, L, Karuppasamy, K, Kim, HJ, Maiyalagan, T, Chun, SH, Jung, J & Kim, HS 2019, ' Fabrication of MoS ₂ /WSe ₂ heterostructures as electrocatalyst for enhanced hydrogen evolution reaction ', Applied Surface Science, vol. 480, pp. 611-620. https://doi.org/10.1016/j.apsusc.2019.02.236

Fabrication of MoS ₂ /WSe ₂ heterostructures as electrocatalyst for enhanced hydrogen evolution reaction . / Vikraman, Dhanasekaran; Hussain, Sajjad; Truong, Linh et al.
In: Applied Surface Science, Vol. 480, 30.06.2019, p. 611-620.

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

TY - JOUR

T1 - Fabrication of MoS 2 /WSe 2 heterostructures as electrocatalyst for enhanced hydrogen evolution reaction

AU - Vikraman, Dhanasekaran

AU - Hussain, Sajjad

AU - Truong, Linh

AU - Karuppasamy, K.

AU - Kim, Hyun Jung

AU - Maiyalagan, T.

AU - Chun, Seung Hyun

AU - Jung, Jongwan

AU - Kim, Hyun Seok

PY - 2019/6/30

Y1 - 2019/6/30

N2 - Two-dimensional material based heterostructures produce novel phenomena due to distinctive interactions between stacked layers. This paper details fabrication of van der Waals heterostructure consisting of layered MoS 2 and WSe 2 on FTO substrates by combining solution bath and radio-frequency sputtering. Raman scattering confirmed WSe 2 /MoS 2 heterostructure formation, X-ray photoelectron spectroscopy surface profile detailed the heterostructure composition, and depth profile showed heterostructure interfacial structure with stacked WSe 2 and MoS 2 layers on the FTO substrate. Surface properties confirmed the WSe 2 /MoS 2 heterostructure formed a multi-structured array of nanograins, and high resolution electron micrographs confirmed vertically formed layered fringes. Hydrogen evolution showed enhanced electrocatalytic behavior with 116 mV overpotential at 10 mA/cm 2 and 76 mV/decade Tafel slope. Electrocatalytic property robustness was confirmed by over 20 h continuous hydrogen evolution reaction in an acidic solution. Enhanced electrocatalytic outcomes were due to increased interfacial hole-electron separation, dispersing active facets through the interface. The stacked layered structure provides a new avenue for two-dimensional heterostructures for energy harvesting devices.

AB - Two-dimensional material based heterostructures produce novel phenomena due to distinctive interactions between stacked layers. This paper details fabrication of van der Waals heterostructure consisting of layered MoS 2 and WSe 2 on FTO substrates by combining solution bath and radio-frequency sputtering. Raman scattering confirmed WSe 2 /MoS 2 heterostructure formation, X-ray photoelectron spectroscopy surface profile detailed the heterostructure composition, and depth profile showed heterostructure interfacial structure with stacked WSe 2 and MoS 2 layers on the FTO substrate. Surface properties confirmed the WSe 2 /MoS 2 heterostructure formed a multi-structured array of nanograins, and high resolution electron micrographs confirmed vertically formed layered fringes. Hydrogen evolution showed enhanced electrocatalytic behavior with 116 mV overpotential at 10 mA/cm 2 and 76 mV/decade Tafel slope. Electrocatalytic property robustness was confirmed by over 20 h continuous hydrogen evolution reaction in an acidic solution. Enhanced electrocatalytic outcomes were due to increased interfacial hole-electron separation, dispersing active facets through the interface. The stacked layered structure provides a new avenue for two-dimensional heterostructures for energy harvesting devices.

KW - Electrocatalyst

KW - Heterostructures

KW - Hydrogen evolution

KW - MoS

KW - TEM

KW - WSe

UR - https://www.scopus.com/pages/publications/85062473163

U2 - 10.1016/j.apsusc.2019.02.236

DO - 10.1016/j.apsusc.2019.02.236

M3 - Article

AN - SCOPUS:85062473163

SN - 0169-4332

VL - 480

SP - 611

EP - 620

JO - Applied Surface Science

JF - Applied Surface Science

ER -

Vikraman D, Hussain S, Truong L, Karuppasamy K, Kim HJ, Maiyalagan T et al. Fabrication of MoS ₂ /WSe ₂ heterostructures as electrocatalyst for enhanced hydrogen evolution reaction Applied Surface Science. 2019 Jun 30;480:611-620. doi: 10.1016/j.apsusc.2019.02.236

Fabrication of MoS ₂ /WSe ₂ heterostructures as electrocatalyst for enhanced hydrogen evolution reaction

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