title: Preparation and characterization of PAA/PVDF membrane-immobilized Pd/Fe nanoparticles for dechlorination of trichloroacetic acid.
abstract: Poly(vinylidene fluoride) (PVDF) microfiltration (MF) membrane was successfully hydrophilized by coating with a novel hydrophilic layer, which was mainly composed of polyvinyl alcohol (PVA), glutaraldehyde, and polyethylene glycol (PEG). Pd/Fe nanoparticles (NPs) were prepared and immobilized in hydrophilized polyacrylic acid (PAA)/PVDF MF membrane. The unmodified and modified PVDF MF membranes were characterized by scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FT-IR). The membrane-supported Pd/Fe NPs exhibited high reactivity in the dechlorination of trichloroacetic acid (TCAA). The effects of several important parameters, including Pd content, Pd/Fe NP loading, the preservation time of Pd/Fe NP membrane system on the dechlorination of TCAA were investigated. The stability of Pd/Fe NP membrane system was tested, and the kinetics and product distribution of dechlorination of TCAA by Pd/Fe NP membrane system were discussed.
authors.affiliation: School of Municipal and Environmental Engineering, State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, China.
authors.forename: Xiangyu
authors.initials: X
authors.lastname: Wang
authors.forename: Chao
authors.initials: C
authors.lastname: Chen
authors.forename: Huiling
authors.initials: H
authors.lastname: Liu
authors.forename: Jun
authors.initials: J
authors.lastname: Ma
mesh_terms: D000180:Acrylic Resins / Q000737:chemistry*; D007501:Iron / Q000737:chemistry*; D008567:Membranes, Artificial; D008855:Microscopy, Electron, Scanning; D015394:Molecular Structure; D053758:Nanoparticles / Q000737:chemistry / Q000648:ultrastructure; D010165:Palladium / Q000737:chemistry*; D011145:Polyvinyls / Q000737:chemistry*; D017550:Spectroscopy, Fourier Transform Infrared; D014238:Trichloroacetic Acid / Q000737:chemistry*; D000099166:Polyacrylamides; D005465:Fluorocarbon Polymers
chemical_list: D000180:Acrylic Resins; D007501:Iron; D008567:Membranes, Artificial; D010165:Palladium; D011145:Polyvinyls; D014238:Trichloroacetic Acid; D000099166:Polyacrylamides; C024865:polyvinylidene fluoride; D005465:Fluorocarbon Polymers