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Facile synthesis of W2C@ WS2 alloy nanoflowers and their hydrogen generation performance

Authors: Thang Phan Nguyen, Soo Young Kim, Tae Hyung Lee, Ho Won Jang, Quyet Van Le, Il Tae Kim
Publication date: 2020/2/28
Journal: Applied Surface Science
Volume: 504
Pages: 144389
Publisher: North-Holland
Description:
Two–dimensional transition metal dichalcogenides such as MoS2 and WS2 nanosheets, nanoflowers, and nanoparticles have been investigated as potential materials for the hydrogen evolution reaction (HER). Besides 2D–TMDs, MXene materials, which are transition metal carbides/nitrides, are promising candidates for energy storage and conversion applications. In this work, alloys of tungsten carbides and tungsten disulfides have been fabricated through a facile hydrothermal method without using any complex structure of carbon or polymer source for carbonization. The fabricated alloys were characterized by X-ray diffraction analysis, field emission scanning microscopy, atomic force microscopy, Raman spectra, and X-ray photoelectron spectroscopy. The results indicated both W2C and WS2 have hexagonal structure in the alloy compound. W2C@WS2 nanomaterials exhibit abundant flower-shaped active …

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