摘要：Seeking catalysts with high electrocatalytic activity for ambient-condition N2 reduction reaction (NRR) remains an ongoing challenge due to the chemical inertness of ***,defect-rich WS2 nanosheets (WS2-x) were designed as an efficient electrocatalyst for NRR,which were prepared via vulcanizing the oxygen-vacancy-rich tungsten oxide in a vacuum *** sulfur defects were conducive to the adsorption and activation of *** neutral electrolyte of 0.1 mol L^(-1)Na2SO_(4) at-0.60 V *** hydrogen electrode,such WS2-xoffered a high Faradaic efficiency of 12.1%with a NH3generation rate of 16.38μg h-1mg-1cat..

摘要：表面聚合物涂层作为保护层广泛应用于表面防腐、防渗透和抗冲击等各种领域,如何在已有材料体系和工艺条件下提高涂层机械力学性能,是一个重要但具有挑战性的问题.受自下而上的制造工艺和生物体的层级结构的能量耗散机制的启发,本文开发了一种具有自褶皱表面形态和梯度交联结构的光固化涂层.理论模拟和实验结果表明,表面自褶皱的独特形貌和体系内梯度交联结构有助于提升涂层的力学性能及抗冲击性.这种光固化自褶皱涂层为设计功能抗冲击聚合物涂层材料开辟了新的途径.

摘要：Rare-earth orthoferrite SmFeO3 is an outstanding single-phase multiferroic material,holding great potential in novel low-power electronic ***,simultaneous magnetic and ferroelectric orders as well as magnetoelectric(ME)coupling effect at room temperature(RT)in this system have not been demonstrated *** this study,epitaxial SmFeO3 films were successfully prepared onto tensile-strain Nb-SrTiO3(Nb-STO)substrates by a pulsed laser deposition(PLD)*** results show that the films exhibit obvious ferromagnetic and ferroelectric orders at ***,the magnetic anisotropy gradually changes from out-of-plane(OP)to in-plane(IP)direction with increasing film thickness,which is attributed to the variations of O 2p-Fe 3d hybridization intensity and Fe 3d-orbit occupancy caused by the strain-relaxed ***,electrically driven reversible magnetic switching further proves that the SmFeO3 films exhibit the RT ME coupling effect,suggesting promising applications in new-generation electric-write magnetic-read data storage devices.