The chemistry of two-dimensional layered transition metal dichalcogenide nanosheets
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- The chemistry of two-dimensional layered transition metal dichalcogenide nanosheets
- Chhowalla, Manish; Shin, Hyeon Suk; Eda, Goki; Li, Lain-Jong; Loh, Kian Ping; Zhang, Hua
- Issue Date
- NATURE PUBLISHING GROUP
- NATURE CHEMISTRY, v.5, no.4, pp.263 - 275
- Ultrathin two-dimensional nanosheets of layered transition metal dichalcogenides (TMDs) are fundamentally and technologically intriguing. In contrast to the graphene sheet, they are chemically versatile. Mono-or few-layered TMDs - obtained either through exfoliation of bulk materials or bottom-up syntheses - are direct-gap semiconductors whose bandgap energy, as well as carrier type (n- or p-type), varies between compounds depending on their composition, structure and dimensionality. In this Review, we describe how the tunable electronic structure of TMDs makes them attractive for a variety of applications. They have been investigated as chemically active electrocatalysts for hydrogen evolution and hydrosulfurization, as well as electrically active materials in opto-electronics. Their morphologies and properties are also useful for energy storage applications such as electrodes for Li-ion batteries and supercapacitors.
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