作者: Zhong-Shuai Wu , Cheng-lin Sun , Xiao-yu Shi , Xiao Wang , Xiao Wang
DOI: 10.1016/S1872-5805(21)60013-6
关键词: Graphene 、 Wetting 、 Oxide 、 Absorption (chemistry) 、 Materials science 、 Polyoxometalate 、 Porosity 、 Specific surface area 、 Chemical engineering 、 Aerogel
摘要: Abstract Three-dimensional (3D) graphene aerogels (GAs) with a tunable pore structure, highly accessible surface area, exceptional compressibility, elasticity and wettability have been explored as promising absorbents for efficient oil/water separation. However, the strategies assembling 3D GAs usually involve high-temperature process, resulting in high cost. We report synthesis of porous polyoxometalate (POM)-hybridized GA (POM-GA) recyclable absorbent The material was fabricated at room temperature by self-assembly reduction oxide using POM functional cross-linker hydrazine hydrate reductant. It had interconnected macroporous large specific wettability, displayedexcellent absorption capacities 100-210 g g−1 rapid removal various organic pollutants from water, outperforming most previously reported graphene-based macro-assemblies synthesized temperatures. Moreover, absorbed oils can be readily removed squeezing or first then burning remaining POM-GA. oil-absorption capacity retention rates POM-GA are 96% 90% after 10 absorbing-squeezing absorbing-squeezing-burning cycles, respectively. therefore has great potential separation wide applicability excellent durability.