Removal of cadmium from aqueous solutions by oxidized and ethylenediamine-functionalized multi-walled carbon nanotubes
Само за регистроване кориснике
2010
Аутори
Vuković, Goran D.Marinković, Aleksandar
Čolić, Miodrag
Ristić, Mirjana
Aleksić, Radoslav
Perić-Grujić, Aleksandra
Uskoković, Petar
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
Surface functionalization of multi-walled carbon nanotubes (MWCNTs) by ethylenediamine, via chemical modification of carboxyl groups, using O-(7-azabenzotriazol-1-yl)-N,N,N',N'-tetramethyluronium hexafluorophosphate, was performed. The resulting materials were characterized by different techniques, such as FTIR, TGA and elemental analysis. Biocompatibility studies showed that the functionalized MWCNTs, at concentrations between 1 and 50 mu g mL(-1), were not cytotoxic for the fibroblast L929 cell line. In batch tests, the influences of solution pH, contact time, initial metal ion concentration and temperature on the sorption of Cd2+ ions onto raw-MWCNTs (raw-MWCNT), oxidized MWCNTs (o-MWCNT) and ethylenediamine-functionalized MWCNTs (e-MWCNT) were studied. The adsorption of Cd2+ ions by o-MWCNT and e-MWCNT was strongly pH dependent. The time dependent Cd2+ sorption onto raw-MWCNT, o-MWCNT and e-MWCNT can be described by a pseudo-second-order kinetic model. The Langmuir isotherm model a...grees well with the equilibrium experimental data. The maximum capacity was obtained for e-MWCNT, 25.7 mgg(-1), at 45 degrees C. The thermodynamic parameters were also deduced for the adsorption of Cd2+ ions on raw-MWCNT, o-MWCNT and e-MWCNT and the results showed that the adsorption was spontaneous and endothermic.
Кључне речи:
Cadmium adsorption / Carbon nanotubes / Amino-functionalization / CytotoxicityИзвор:
Chemical Engineering Journal, 2010, 157, 1, 238-248Издавач:
- Elsevier Science Sa, Lausanne
Финансирање / пројекти:
- Синтеза функционалних материјала са контролисаном структуром на молекуларном и нано нивоу (RS-MESTD-MPN2006-2010-142006)
- Развој метода за сепарацију, предконцентрисање, одређивање и уклањање загађивача околине (RS-MESTD-MPN2006-2010-142002)
DOI: 10.1016/j.cej.2009.11.026
ISSN: 1385-8947
WoS: 000274772100030
Scopus: 2-s2.0-75349108796
Институција/група
Tehnološko-metalurški fakultetTY - JOUR AU - Vuković, Goran D. AU - Marinković, Aleksandar AU - Čolić, Miodrag AU - Ristić, Mirjana AU - Aleksić, Radoslav AU - Perić-Grujić, Aleksandra AU - Uskoković, Petar PY - 2010 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1714 AB - Surface functionalization of multi-walled carbon nanotubes (MWCNTs) by ethylenediamine, via chemical modification of carboxyl groups, using O-(7-azabenzotriazol-1-yl)-N,N,N',N'-tetramethyluronium hexafluorophosphate, was performed. The resulting materials were characterized by different techniques, such as FTIR, TGA and elemental analysis. Biocompatibility studies showed that the functionalized MWCNTs, at concentrations between 1 and 50 mu g mL(-1), were not cytotoxic for the fibroblast L929 cell line. In batch tests, the influences of solution pH, contact time, initial metal ion concentration and temperature on the sorption of Cd2+ ions onto raw-MWCNTs (raw-MWCNT), oxidized MWCNTs (o-MWCNT) and ethylenediamine-functionalized MWCNTs (e-MWCNT) were studied. The adsorption of Cd2+ ions by o-MWCNT and e-MWCNT was strongly pH dependent. The time dependent Cd2+ sorption onto raw-MWCNT, o-MWCNT and e-MWCNT can be described by a pseudo-second-order kinetic model. The Langmuir isotherm model agrees well with the equilibrium experimental data. The maximum capacity was obtained for e-MWCNT, 25.7 mgg(-1), at 45 degrees C. The thermodynamic parameters were also deduced for the adsorption of Cd2+ ions on raw-MWCNT, o-MWCNT and e-MWCNT and the results showed that the adsorption was spontaneous and endothermic. PB - Elsevier Science Sa, Lausanne T2 - Chemical Engineering Journal T1 - Removal of cadmium from aqueous solutions by oxidized and ethylenediamine-functionalized multi-walled carbon nanotubes EP - 248 IS - 1 SP - 238 VL - 157 DO - 10.1016/j.cej.2009.11.026 ER -
@article{ author = "Vuković, Goran D. and Marinković, Aleksandar and Čolić, Miodrag and Ristić, Mirjana and Aleksić, Radoslav and Perić-Grujić, Aleksandra and Uskoković, Petar", year = "2010", abstract = "Surface functionalization of multi-walled carbon nanotubes (MWCNTs) by ethylenediamine, via chemical modification of carboxyl groups, using O-(7-azabenzotriazol-1-yl)-N,N,N',N'-tetramethyluronium hexafluorophosphate, was performed. The resulting materials were characterized by different techniques, such as FTIR, TGA and elemental analysis. Biocompatibility studies showed that the functionalized MWCNTs, at concentrations between 1 and 50 mu g mL(-1), were not cytotoxic for the fibroblast L929 cell line. In batch tests, the influences of solution pH, contact time, initial metal ion concentration and temperature on the sorption of Cd2+ ions onto raw-MWCNTs (raw-MWCNT), oxidized MWCNTs (o-MWCNT) and ethylenediamine-functionalized MWCNTs (e-MWCNT) were studied. The adsorption of Cd2+ ions by o-MWCNT and e-MWCNT was strongly pH dependent. The time dependent Cd2+ sorption onto raw-MWCNT, o-MWCNT and e-MWCNT can be described by a pseudo-second-order kinetic model. The Langmuir isotherm model agrees well with the equilibrium experimental data. The maximum capacity was obtained for e-MWCNT, 25.7 mgg(-1), at 45 degrees C. The thermodynamic parameters were also deduced for the adsorption of Cd2+ ions on raw-MWCNT, o-MWCNT and e-MWCNT and the results showed that the adsorption was spontaneous and endothermic.", publisher = "Elsevier Science Sa, Lausanne", journal = "Chemical Engineering Journal", title = "Removal of cadmium from aqueous solutions by oxidized and ethylenediamine-functionalized multi-walled carbon nanotubes", pages = "248-238", number = "1", volume = "157", doi = "10.1016/j.cej.2009.11.026" }
Vuković, G. D., Marinković, A., Čolić, M., Ristić, M., Aleksić, R., Perić-Grujić, A.,& Uskoković, P.. (2010). Removal of cadmium from aqueous solutions by oxidized and ethylenediamine-functionalized multi-walled carbon nanotubes. in Chemical Engineering Journal Elsevier Science Sa, Lausanne., 157(1), 238-248. https://doi.org/10.1016/j.cej.2009.11.026
Vuković GD, Marinković A, Čolić M, Ristić M, Aleksić R, Perić-Grujić A, Uskoković P. Removal of cadmium from aqueous solutions by oxidized and ethylenediamine-functionalized multi-walled carbon nanotubes. in Chemical Engineering Journal. 2010;157(1):238-248. doi:10.1016/j.cej.2009.11.026 .
Vuković, Goran D., Marinković, Aleksandar, Čolić, Miodrag, Ristić, Mirjana, Aleksić, Radoslav, Perić-Grujić, Aleksandra, Uskoković, Petar, "Removal of cadmium from aqueous solutions by oxidized and ethylenediamine-functionalized multi-walled carbon nanotubes" in Chemical Engineering Journal, 157, no. 1 (2010):238-248, https://doi.org/10.1016/j.cej.2009.11.026 . .