Adsorption of 2,4-dichlorophenol from water using deep eutectic solvents-functionalized carbon nanotubes
Document Type
Article
Publication Date
1-1-2018
Abstract
In this work, novel adsorbents for 2,4-dichlorphenol (DCP) were introduced using deep eutectic solvent (DES) as functionalization agent for multi-wall carbon nanotubes (MWCNTs). Choline chloride salt (ChCl) was mixed with ethylene glycol (EG) as hydrogen bond donor (HBD) at molar ratio of (1:2) to prepare DES. Three DES-based MWCNTs adsorbents were produced and their chemical, physical and morphological properties were investigated using, RAMAN, FTIR, FESEM, zeta potential, TGA, TEM and BET surface area. The capability of DES as non-destructive functionalization agent for MWCNTs was proved by the increase of the purity and the surface area of MWCNTs. Response surface methodology was used to define the optimum conditions for 2,4-DCP adsorption onto each adsorbent. The adsorption experimental data were well described by pseudo-second order kinetic mode land by Langmuir isotherm model. DES-acid treated MWCNTs showed the highest maximum adsorption capacity of 390.53 mg g −1 .
Keywords
2, 4-dichlorophenol, Carbon nanotubes, Deep eutectic solvents, Functionalization, Water treatment
Divisions
nanotechnology
Funders
Geran Penyelidikan Universiti Malaya (UMRG Program) - AET (Innovative Technology (ITRC)), project number of RP019C-13AET
Publication Title
Desalination and Water Treatment
Volume
116
Publisher
Desalination Publications