The design and construction of 3D rose-petal-shaped MoS2 hierarchical nanostructures with structure-sensitive properties

• DOI: 10.1039/c4ta01004c
• Publication Date: 2014-03-28T20:55:40Z
• Authors: Han Zhu; MingLiang Du; Ming Zhang; MeiLing Zou; TingTing Yang; YaQin Fu; JuMing Yao
• Keywords: Overpotential; Electrospinning; Nanocellulose

Rose-petal-shaped MoS2 hierarchical nanostructures were designed and constructed using carbonized electrospun nanofibers as a template, which exhibit highly structure-sensitive properties for the hydrogen evolution reaction (HER). We first synthesized carbon nanofiber (CNF) mats by combining electrospinning carbonization processes, then CNF used substrate direct growth of nanocrystals via CVD method. By controlling morphology at nanoscale, we evolutions in structures preferentially exposed more catalytically active edge sites, enabling improved performance electrochemical catalytic activity. Because their edges excellent chemical electrical coupling to underlying CNFs, MoS2–CNF fiber exhibited HER activity with small overpotential ∼0.12 V Tafel slope 45 mV per decade. Our findings provide feasible way design engineer advanced catalysis, electronic devices, other potential applications.