title: Synthesis and characterization of hybrid molecularly imprinted polymer (MIP) membranes for removal of methylene blue (MB).
abstract: This work reports the synthesis and characterization of a hybrid molecularly imprinted polymer (MIP) membrane for removal of methylene blue (MB) in an aqueous environment. MB-MIP powders were hybridized into a polymer membrane (cellulose acetate (CA) and polysulfone (PSf)) after it was ground and sieved (using 90 µm sieve). MB-MIP membranes were prepared using a phase inversion process. The MB-MIP membranes were characterized using Fourier Transform Infrared Spectroscopy (FTIR) and Scanning Electron Microscope (SEM). Parameters investigated for the removal of MB by using membrane MB-MIP include pH, effect of time, concentration of MB, and selectivity studies. Maximum sorption of MB by PSf-MB-MIP membranes and CA-MB-MIP membranes occurred at pH 10 and pH 12, respectively. The kinetic study showed that the sorption of MB by MB-MIP membranes (PSf-MB-MIP and CA-MB-MIP) followed a pseudo-second-order-model and the MB sorption isotherm can be described by a Freundlich isotherm model.
authors.affiliation: Department of Chemistry, Faculty of Science, University of Malaya, Kuala Lumpur 50603, Malaysia.
authors.forename: Saliza
authors.initials: S
authors.lastname: Asman
authors.forename: Nor Azah
authors.initials: NA
authors.lastname: Yusof
authors.forename: Abdul Halim
authors.initials: AH
authors.lastname: Abdullah
authors.forename: Md Jelas
authors.initials: MJ
authors.lastname: Haron
mesh_terms: D006863:Hydrogen-Ion Concentration; D007700:Kinetics; D008567:Membranes, Artificial; D008751:Methylene Blue / Q000302:isolation & purification*; D008855:Microscopy, Electron, Scanning; D054802:Molecular Imprinting; D011108:Polymers / Q000737:chemistry*; D017550:Spectroscopy, Fourier Transform Infrared
chemical_list: D008567:Membranes, Artificial; D011108:Polymers; D008751:Methylene Blue