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Covalently Connected Nb4N5-xOx-MoS2 Heterocatalysts with Desired Electron Density to Boost Hydrogen Evolution.

08:00 EDT 24th March 2020 | BioPortfolio

Summary of "Covalently Connected Nb4N5-xOx-MoS2 Heterocatalysts with Desired Electron Density to Boost Hydrogen Evolution."

Rational design and controllable synthesis of efficient and robust electrocatalysts for hydrogen evolution reaction (HER) remain a critical challenge for the renewable energy economy. Herein, heterostructured Nb4N5-xOx-MoS2 (0chemical vapor deposition (CVD) approaches. During CVD process, MoS2 nanosheets are etched into small pieces and covalently interconnected with Nb4N5-xOx to form fine Nb4N5-xOx-MoS2 heterostructures, which possess abundant interfaces and fully exposed edge active sites. The as-prepared Nb4N5-xOx-MoS2 heterostructures with Nb-(N, S)-Mo bridges provide desired electron density, which exhibit excellent chemisorption ability for both H and water, significantly improving the intrinsic HER activity. Meantime, the covalently connected Nb4N5-xOx-MoS2 heterostructures together with chemical coupling of Nb4N5-xOx-MoS2 and N-doped graphene improve the structural stability and ensure fast electron transfer in Nb4N5-xOx-MoS2/NG nanocomposite, further cooperating the H2 generation and stability.

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This article was published in the following journal.

Name: ACS nano
ISSN: 1936-086X
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