Hierarchical molybdenum dichalcogenide nanosheets assembled nitrogen doped graphene layers for sensitive electrochemical dopamine detection

Accepted Manuscript

Hierarchical molybdenum dichalcogenide nanosheets assembled nitrogen doped

graphene layers for sensitive electrochemical dopamine detection

L.G. Bach, D.M. Nguyen, Q.B. Bui, P.H. Ai-Le, H.-T. Nhac-Vu

PII: S0254-0584(19)30611-X

DOI: https://doi.org/10.1016/j.matchemphys.2019.121814

Article Number: 121814

Reference: MAC 121814

To appear in: Materials Chemistry and Physics

Received Date: 4 April 2019

Revised Date: 21 June 2019

Accepted Date: 3 July 2019

Please cite this article as: L.G. Bach, D.M. Nguyen, Q.B. Bui, P.H. Ai-Le, H.-T. Nhac-Vu, Hierarchical

molybdenum dichalcogenide nanosheets assembled nitrogen doped graphene layers for sensitive

electrochemical dopamine detection, Materials Chemistry and Physics (2019), doi: https://

doi.org/10.1016/j.matchemphys.2019.121814.

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1

Hierarchical Molybdenum Dichalcogenide Nanosheets Assembled Nitrogen

Doped Graphene Layers for Sensitive Electrochemical Dopamine Detection

L. G. Bacha1, D.M. Nguyenb1, Q. B. Buic*, P.H. Ai-Led

, H.-T. Nhac-Vue

aCenter of Excellence for Green Energy and Environmental Nanomaterials (CE@GrEEN),

Nguyen Tat Thanh University, Ho Chi Minh City, Viet Nam.

b

Institute of Research and Development, Duy Tan University, Da Nang 550000, Viet Nam.

c

Sustainable Developments in Civil Engineering Research Group, Faculty of Civil

Engineering, Ton Duc Thang University, Ho Chi Minh City, Viet Nam.

d

Faculty of Chemical Engineering-Industrial University of Ho Chi Minh City, Ho Chi Minh

City, Viet Nam.

eUniversity of Medicine and Pharmacy at Ho Chi Minh City, Viet Nam.

1

These authors have equal contribution in this work.

*Corresponding author. Tel.: +84 909-358-935. Fax: +84 2837-755-055.

E-mail address: [email protected] (Q. B. Bui).

Abstract

In present work, we proposed a novel nanohybrid based on hierarchical molybdenum

dichalcogenide nanosheets uniformly assembled over surface of nitrogen-doped graphene

(MoS2 NSs/N-Gr) via a facile and cost-effective synthesis approach. The developed material

was applied for highly sensitive dopamine (DA) detection. It was demonstrated that the MoS2

NSs/N-Gr nanohybrids displayed excellent sensitivity towards DA sensing with an

outstanding detection range of 3.2 µM to 5.68 mM, low detection limit of 11.9 µM (S/N = 3),