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Polymers 2018, 10(12), 1309; https://doi.org/10.3390/polym10121309

MoSe2-GO/rGO Composite Catalyst for Hydrogen Evolution Reaction

1
School of Chemical Engineering and Materials Science, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul 06974, Korea
2
Institute of Research and Development, Duy Tan University, Da Nang 550000, Vietnam
3
Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul 08826, Korea
4
Department of Chemical and Biomolecular Engineering, The University of Hong Kong Science and Technology, Clear Water Bay, Kowloon, Hong Kong
These authors contributed equally to this work.
*
Authors to whom correspondence should be addressed.
Received: 3 November 2018 / Revised: 21 November 2018 / Accepted: 24 November 2018 / Published: 27 November 2018
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Abstract

There has been considerable research to engineer composites of transition metal dichalcogenides with other materials to improve their catalytic performance. In this work, we present a modified solution-processed method for the formation of molybdenum selenide (MoSe2) nanosheets and a facile method of structuring composites with graphene oxide (GO) or reduced graphene oxide (rGO) at different ratios to prevent aggregation of the MoSe2 nanosheets and hence improve their electrocatalytic hydrogen evolution reaction performance. The prepared GO, rGO, and MoSe2 nanosheets were characterized by X-ray powder diffraction, Raman spectroscopy, X-ray photoelectron spectroscopy, transmission electron microscopy, energy-dispersive X-ray spectroscopy, and scanning electron microscopy. The electrocatalytic performance results showed that the pure MoSe2 nanosheets exhibited a somewhat high Tafel slope of 80 mV/dec, whereas the MoSe2-GO and MoSe2-rGO composites showed lower Tafel slopes of 57 and 67 mV/dec at ratios of 6:4 and 4:6, respectively. We attribute the improved catalytic effects to the better contact and faster carrier transfer between the edge of MoSe2 and the electrode due to the addition of GO or rGO. View Full-Text
Keywords: transition metal dichalcogenides; electrocatalyst; hydrogen evolution reaction; molybdenum selenide composites transition metal dichalcogenides; electrocatalyst; hydrogen evolution reaction; molybdenum selenide composites
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Guo, W.; Le, Q.V.; Hasani, A.; Lee, T.H.; Jang, H.W.; Luo, Z.; Kim, S.Y. MoSe2-GO/rGO Composite Catalyst for Hydrogen Evolution Reaction. Polymers 2018, 10, 1309.

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