De-li1, *, LI Hui1, *, HE Hua1, 2, LIN Rui3, ZUO Peng-li1. Adsorption performance of carboxylated multi-wall carbon nanotube-Fe3O4 magnetic hybrids for Cu(II) in water. New Carbon Mater., 2014, 29(1): 15-25. doi: 10.1016/S1872-5805(14)60122-0
Citation:
De-li1, *, LI Hui1, *, HE Hua1, 2, LIN Rui3, ZUO Peng-li1. Adsorption performance of carboxylated multi-wall carbon nanotube-Fe3O4 magnetic hybrids for Cu(II) in water. New Carbon Mater., 2014, 29(1): 15-25. doi: 10.1016/S1872-5805(14)60122-0
De-li1, *, LI Hui1, *, HE Hua1, 2, LIN Rui3, ZUO Peng-li1. Adsorption performance of carboxylated multi-wall carbon nanotube-Fe3O4 magnetic hybrids for Cu(II) in water. New Carbon Mater., 2014, 29(1): 15-25. doi: 10.1016/S1872-5805(14)60122-0
Citation:
De-li1, *, LI Hui1, *, HE Hua1, 2, LIN Rui3, ZUO Peng-li1. Adsorption performance of carboxylated multi-wall carbon nanotube-Fe3O4 magnetic hybrids for Cu(II) in water. New Carbon Mater., 2014, 29(1): 15-25. doi: 10.1016/S1872-5805(14)60122-0
China Pharmaceutical University, Nanjing 210009, China|2.Key Laboratory of Drug Quality Control and Pharmacovigilance, Ministry of Education, China Pharmaceutical University, Nanjing 210009, China|3.Yancheng Health Vocational and Technical College, Yancheng 224005, China
Funds:
Graduate Students Innovative Projects of Jiangsu Province, China(CXZZ11-0812); Guizhou Provincial Natural Science Foundation of China(J20122288); Zhejiang Provincial Natural Science Foundation of China(Y4110235); Fundamental Research Funds for the Central Universities, China(JKY2011008).
Carboxylated multi-wall carbon nanotube (c-MWCNT)-Fe3O4 magnetic hybrids (c-MWCNTMCs) were prepared by mixing FeCl3·6H2O, sodium acetate, ethylene glycol and diethylene glycol with c-MWCNTs, followed by sonicating and heat treatment at 200℃ for 10h. Results indicated that the c-MWCNTMCs showed a good dispersion stability, an acid and alkali resistivity, and magnetic properties in deionized water, and can be used as adsorbents for Cu(II) removal . The c-MWCNTMCs could be easily separated from water by a magnet and showed a high adsorption capacity for Cu(II). The adsorption of Cu(II) on the c-MWCNTMCs was quick and followed a pseudo-second-order model. The adsorption force between the c-MWCNTMHs and Cu(II) was of a chemical type and the saturated adsorbents can be regenerated at pH < 2.0. The magnetic Fe3O4 favored only the quick separation and had little contribution to adsorption. The low limit of Cu(II) in water that was removable with the hybrids was 1.29μg/L.
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