Molybdenum Sulfide Nanosheet‐Based Hollow Porous Flat Boxes and Nanotubes for Efficient Electrochemical Hydrogen Evolution,ChemCatChem

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Molybdenum Sulfide Nanosheet‐Based Hollow Porous Flat Boxes and Nanotubes for Efficient Electrochemical Hydrogen Evolution
ChemCatChem ( IF 3.8 ) Pub Date : 2017-12-07 , DOI: 10.1002/cctc.201701306
Liao Chen ₁ , Hongli Zhu ₁

Affiliation

Intriguing amorphous/quasiamorphous molybdenum sulfide (MoS_x) materials with active terminal disulfide S₂²⁻ units have been recognized recently as prominent catalysts for the hydrogen evolution reaction (HER). Here, we diversify the MoS_x morphologies and structures by a facile template‐free solvothermal method to prepare fascinating MoS_x nanosheet‐based hollow porous flat boxes and nanotubes. As we increase the ethanol concentration in the mixed solvent for the reaction from 60 to 100 vol %, highly dispersed MoS_x materials are obtained and the morphologies change from nanosheet to nanosheet‐based hollow porous nanotubes and ultimately to nanosheet‐based hollow porous flat boxes with the increasing S₂²⁻ content. Catalytic measurements demonstrate that the hollow porous MoS_x flat boxes and nanotubes have similar outstanding HER performances and can reach 10 mA cm⁻² current at overpotentials of approximately 206 and 210 mV, respectively.

中文翻译：

基于硫化钼纳米片的空心多孔扁平盒和纳米管，可有效释放电化学氢

具有活性末端二硫化物S ₂^2-单元的无定形/准无定形硫化钼（MoS _x）材料最近被公认为是析氢反应（HER）的重要催化剂。在这里，我们通过一种简便的无模板溶剂热方法使MoS _x的形态和结构多样化，从而制备出引人入胜的基于MoS _x纳米片的中空多孔扁平盒和纳米管。当我们将反应混合溶剂中的乙醇浓度从60体积％增加到100体积％时，MoS _x获得了材料后，随着S ₂^2-含量的增加，形态从纳米片变为基于纳米片的中空多孔纳米管，最终变为基于纳米片的中空多孔扁平盒。催化测量表明，中空的多孔MoS _x扁平盒和纳米管具有类似的出色HER性能，并且在大约206和210 mV的过电势下可以达到10 mA cm ^-2的电流。

更新日期：2017-12-07

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