Reduced Graphene Oxide/Nanocellulose/Amino-Multiwalled Carbon Nanotubes Nanocomposite Aerogel for Excellent Oil Adsorption

Yuewen Hui,1#

Wenhao Xie1# 

Hongbo Gu1*Email

1Shanghai Key Lab of Chemical Assessment and Sustainability, School of Chemical Science and Engineering, Tongji University, Shanghai 200092, China.

Abstract

In this work, reduced graphene oxide/amino multi-walled carbon nanotube/nanocellulose (rGO/MWCNTs-NH2/NC) nanocomposite aerogel has been successfully fabricated through the hydrothermal with freeze-drying and high-temperature annealing method and confirmed by Fourier transform infrared spectroscopy (FTIR), Raman spectroscopy, scanning electron microscope (SEM) and transmission electron microscopy (TEM). The optimal condition for fabrication of rGO/MWCNTs-NH2/NC nanocomposite aerogel is mass ratio of GO to MWCNTs-NH2 of 8:1 with NC weight percentage of 0.06%. The adsorption tests and oil/water separation experiments certify that the rGO/MWCNTs-NH2/NC nanocomposite aerogel owns an excellent adsorption performance for various oil and organic solvents including ethyl acetate (161.76±7.69 g g-1), dichloromethane (156.14±8.24 g g-1), cyclohexane (92.73±5.22 g g-1), acetone (103.87±7.83 g g-1), and sesame oil (124.09±6.64 g g-1), and achieves an oil/water separation within only 20 s. Our rGO/MWCNTs-NH2/NC nanocomposite aerogel is a promising material for oil and organic solvent adsorption.

Reduced Graphene Oxide/Nanocellulose/Amino-Multiwalled Carbon Nanotubes Nanocomposite Aerogel for Excellent Oil Adsorption