Core-shell MoO3-MoS2 nanowires for hydrogen evolution: a functional design for electrocatalytic materials.

Chen, Zhebo; Cummins, Dustin; Reinecke, Benjamin N; Clark, Ezra; Sunkara, Mahendra K; Jaramillo, Thomas F · Nano Lett · 2011

basic_science · Level V

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Abstract

We synthesize vertically oriented core-shell nanowires with substoichiometric MoO(3) cores of ∼20-50 nm and conformal MoS(2) shells of ∼2-5 nm. The core-shell architecture, produced by low-temperature sulfidization, is designed to utilize the best properties of each component material while mitigating their deficiencies. The substoichiometric MoO(3) core provides a high aspect ratio foundation and enables facile charge transport, while the conformal MoS(2) shell provides excellent catalytic activity and protection against corrosion in strong acids.