自感知、超轻量、导电的 3D 石墨烯/氧化 铁气凝胶弹性体，可在磁场中变形。
Self-Sensing, Ultralight, and Conductive 3D Graphene/Iron Oxide Aerogel Elastomer Deformable in a Magnetic Field.
机构信息
§Liaoning Key Lab for Energy Materials and Chemical Engineering, State Key Lab of Fine Chemicals, Dalian University of Technology, Dalian 116024, People's Republic of China.
∥TMSR Research Center and CAS Key Lab of Nuclear Radiation and Nuclear Energy Technology, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, 201800, People's Republic of China.
出版信息
ACS Nano. 2015 Apr 28;9(4):3969-77. doi: 10.1021/nn507426u. Epub 2015 Mar 30.
Three-dimensional (3D) graphene aerogels (GA) show promise for applications in supercapacitors, electrode materials, gas sensors, and oil absorption due to their high porosity, mechanical strength, and electrical conductivity. However, the control, actuation, and response properties of graphene aerogels have not been well studied. In this paper, we synthesized 3D graphene aerogels decorated with Fe3O4 nanoparticles (Fe3O4/GA) by self-assembly of graphene with simultaneous decoration by Fe3O4 nanoparticles using a modified hydrothermal reduction process. The aerogels exhibit up to 52% reversible magnetic field-induced strain and strain-dependent electrical resistance that can be used to monitor the degree of compression/stretching of the material. The density of Fe3O4/GA is only about 5.8 mg cm(-3), making it an ultralight magnetic elastomer with potential applications in self-sensing soft actuators, microsensors, microswitches, and environmental remediation.
三维（3D）石墨烯气凝胶（GA）由于其高孔隙率、机械强度和电导率，在超级电容器、电极材料、气体传感器和吸油等领域有应用前景。然而，石墨烯气凝胶的控制、驱动和响应特性尚未得到很好的研究。在本文中，我们通过使用改进的水热还原工艺，将石墨烯自组装同时用 Fe3O4 纳米粒子修饰，合成了 3D 石墨烯气凝胶，其中修饰了 Fe3O4 纳米粒子。气凝胶表现出高达 52%的磁场诱导应变的可逆性和应变相关的电阻，可用于监测材料的压缩/拉伸程度。Fe3O4/GA 的密度仅约为 5.8mgcm(-3)，使其成为一种超轻的磁弹性体，有望应用于自感测软致动器、微传感器、微开关和环境修复。
Zotero 插件