采用原位生成氢氟酸法刻蚀Ti3AlC2制备了单片层二维过渡金属碳化物(MXene),用扫描电子显微镜(SEM)、透射电子显微镜(TEM)及原子力显微镜(AFM)等表征了MXene的微观形貌.结果表明,所制备的MXene材料具有大片、单层及低缺陷等特点.通过抽滤...采用原位生成氢氟酸法刻蚀Ti3AlC2制备了单片层二维过渡金属碳化物(MXene),用扫描电子显微镜(SEM)、透射电子显微镜(TEM)及原子力显微镜(AFM)等表征了MXene的微观形貌.结果表明,所制备的MXene材料具有大片、单层及低缺陷等特点.通过抽滤MXene分散液制备的MXene膜材料具有导电性高(3280 S/cm)及韧性优异等特点.MXene膜的屏蔽性能测试结果表明,8μm厚的MXene膜屏蔽效能为60.6d B,SSE/t值则高达19531.1 d B·cm^2·g^-1.推测MXene膜的屏蔽机理是一种以吸收为主的电磁干扰屏蔽机制.展开更多
Recently,surfaces with intelligent wetting controllability have aroused increased attention.Endowing the surface with stimuli-responsive surface chemistry and tunable surface microstructure can achieve a surface with ...Recently,surfaces with intelligent wetting controllability have aroused increased attention.Endowing the surface with stimuli-responsive surface chemistry and tunable surface microstructure can achieve a surface with smart wetting performances.However,almost all existing surfaces only focused on single surface chemistry or micromorphology,thus to achieve smart multiple wetting regulation is still difficult.Herein,we report a ZnO coated shape memory polymer(SMP)surface,and the surface chemistry and micromorphology can be synergistically regulated.ZnO can provide adjustable surface chemistry under UV irradiation,and SMP can offer tunable micromorphology due to its shape memory effect(SME).Based on the combined effect between the above two features,surface wetting performance can be smartly regulated among multiple states.Moreover,due to the excellent controllability of the surface,the application in directional droplet transportation was also demonstrated.This paper offers a new surface with tunability in both surface chemistry and micromorphology,and given the excellent wetting controllability,the surface is believed to be applied in a lot of fields,such as droplet manipulation,fluidic devices and selective catalysis.展开更多
文摘采用原位生成氢氟酸法刻蚀Ti3AlC2制备了单片层二维过渡金属碳化物(MXene),用扫描电子显微镜(SEM)、透射电子显微镜(TEM)及原子力显微镜(AFM)等表征了MXene的微观形貌.结果表明,所制备的MXene材料具有大片、单层及低缺陷等特点.通过抽滤MXene分散液制备的MXene膜材料具有导电性高(3280 S/cm)及韧性优异等特点.MXene膜的屏蔽性能测试结果表明,8μm厚的MXene膜屏蔽效能为60.6d B,SSE/t值则高达19531.1 d B·cm^2·g^-1.推测MXene膜的屏蔽机理是一种以吸收为主的电磁干扰屏蔽机制.
基金supported by the National Natural Science Foundation of China (No.22075061)the Project of the State Key Laboratory of Urban Water Resource and Environment (Harbin Institute of Technology)of China (No.2022TS37).
文摘Recently,surfaces with intelligent wetting controllability have aroused increased attention.Endowing the surface with stimuli-responsive surface chemistry and tunable surface microstructure can achieve a surface with smart wetting performances.However,almost all existing surfaces only focused on single surface chemistry or micromorphology,thus to achieve smart multiple wetting regulation is still difficult.Herein,we report a ZnO coated shape memory polymer(SMP)surface,and the surface chemistry and micromorphology can be synergistically regulated.ZnO can provide adjustable surface chemistry under UV irradiation,and SMP can offer tunable micromorphology due to its shape memory effect(SME).Based on the combined effect between the above two features,surface wetting performance can be smartly regulated among multiple states.Moreover,due to the excellent controllability of the surface,the application in directional droplet transportation was also demonstrated.This paper offers a new surface with tunability in both surface chemistry and micromorphology,and given the excellent wetting controllability,the surface is believed to be applied in a lot of fields,such as droplet manipulation,fluidic devices and selective catalysis.
