【摘 要】
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Waste plastics recycling and oil/organics remediation are environmental issues of global concem.In this work,a protectant was introduced,for the first time,to make highly efficient catalysts for pyrolysis of waste plastics into carbon nanotubes (CNTs) wit
【机 构】
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The State Key Laboratory of Refractories and Metallurgy,Wuhan University of Science and Technology,W
论文部分内容阅读
Waste plastics recycling and oil/organics remediation are environmental issues of global concem.In this work,a protectant was introduced,for the first time,to make highly efficient catalysts for pyrolysis of waste plastics into carbon nanotubes (CNTs) with high yield.By using waste polyethylene,Co(NO3)2 and oleylamine respectively as carbon source,catalyst precursor and protectant,a yield as high as 59.0％ was achieved.The CNTs exhibited a high adsorption capacity for methylene blue (up to 107.1 mg/g).Fur-thermore,by combining the CNTs with graphene oxide,a graphene-CNT aerogel with a low density of 8.2 mg/cm3 and high porosity of 96.0％ was successfully prepared.It showed excellent hydrophobicity and mechanical stability,as well as high adsorption capacity of 289-410 g/g oil/organic solvent,which was much higher than most of these achieved by carbon-based three-dimensional materials reported previously,making the as-prepared aerogel a very promising adsorbent for oil/water separation.
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