Abstract
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.
基金项目
National Natural Science Foundation of China(51872210)
National Natural Science Foundation of China(51672194)
Program for Innova-tive Teams of Outstanding Young and Middle-aged Researchers in the Higher Education Institutions of Hubei Pro(T201602)
Key Program of Natural Science Foundation of Hubei Province,China(2017CFA004)
NETL
NSTL
维普
万方数据