3D hierarchical porous graphene aerogels for highly improved adsorption and recycled capacity
作者： Caixia Chi , Hongbo Xu , Ke Zhang , Yibo Wang , Shuanghu Zhang
DOI: 10.1016/J.MSEB.2014.12.026
关键词: Polystyrene 、 Raman spectroscopy 、 Thermal stability 、 Adsorption 、 Graphene 、 Porosity 、 Self-assembly 、 Scanning electron microscope 、 Materials science 、 Chemical engineering
摘要: Abstract This article demonstrates the fabrication of 3D hierarchical porous graphene aerogels (HGAs) with tunable architecture by a “fishing” process polystyrene (PS) particles as sacrificial templates. Structure and morphology were characterized X-ray diffraction (XRD), Raman spectroscopy, scanning electron microscopy (SEM), respectively. The HGAs exhibits low density, super hydrophobicity, high porosity good thermal stability, which used adsorbents for removal oils organic solvents, showing highly efficient adsorption. In addition, they could be regenerated heat treatment to release adsorbates. After eight toluene-adsorbing drying recycles, adsorption capacity reaches 93% initial uptake.
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