Removal of 4,4'-dichlorinated biphenyl from aqueous solution using methyl methacrylate grafted multiwalled carbon nanotubes.
Methyl methacrylate (MMA) is grafted on multiwalled carbon nanotubes (MWCNTs) by using N(2) plasma technique. The MMA grafted MWCNTs (MWCNT-g-pMMA) are characterized by using Raman spectroscopy, powder X-ray diffraction, X-ray photoelectron spectroscopy, thermo gravimetric analysis-differential thermal analysis (TGA-DTA), and potentiometric acid-base titration method. The application of MWCNT-g-pMMA in the removal of 4,4'-dichlorinated biphenyl (4,4'-DCB) from large volumes of aqueous solutions is investigated under ambient conditions. The results indicate that the adsorption of 4,4'-DCB on MWCNT-g-pMMA is much higher than that of 4,4'-DCB on MWCNTs, and the adsorbed 4,4'-DCB is difficult to be thermally decomposed from MWCNT-g-pMMA according to the TGA-DTA analysis. MWCNT-g-pMMA are suitable materials in the preconcentration and immobilization of polychlorinated biphenyls (PCBs) from large volumes of aqueous solutions in environmental pollution cleanup.
Key Laboratory of Novel Thin Film Solar Cells, Institute of Plasma Physics, Chinese Academy of Sciences, P.O. Box 1126, Hefei 230031, PR China.
Dadong
D
Shao
Jun
J
Hu
Zhongqing
Z
Jiang
Xiangke
X
Wang
D000327:Adsorption; D001713:Biphenyl Compounds / Q000737:chemistry*; D052918:Environmental Restoration and Remediation / Q000379:methods*; D006845:Hydrocarbons, Fluorinated / Q000737:chemistry*; D020366:Methylmethacrylate / Q000737:chemistry*; D037742:Nanotubes, Carbon / Q000737:chemistry* / Q000648:ultrastructure; D014874:Water Pollutants, Chemical / Q000737:chemistry*
D001713:Biphenyl Compounds; D006845:Hydrocarbons, Fluorinated; D037742:Nanotubes, Carbon; D014874:Water Pollutants, Chemical; D020366:Methylmethacrylate