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Glow‐discharge Electrolysis Plasma Induced Synthesis of Polyvinylpyrrolidone/Acrylic Acid Hydrogel and its Adsorption Properties for Heavy‐metal Ions
Author(s) -
Lu Quanfang,
Yu Jie,
Gao Jinzhang,
Yang Wu,
Li Yan
Publication year - 2011
Publication title -
plasma processes and polymers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.644
H-Index - 74
eISSN - 1612-8869
pISSN - 1612-8850
DOI - 10.1002/ppap.201000144
Subject(s) - polyvinylpyrrolidone , thermogravimetric analysis , glow discharge , adsorption , x ray photoelectron spectroscopy , materials science , acrylic acid , fourier transform infrared spectroscopy , electrolysis , langmuir , chemical engineering , analytical chemistry (journal) , aqueous solution , freundlich equation , nuclear chemistry , chemistry , polymer chemistry , plasma , composite material , organic chemistry , electrode , polymer , electrolyte , copolymer , physics , quantum mechanics , engineering
Polyvinylpyrrolidone/acrylic acid (PVP/AAc) hydrogel is synthesized using glow‐discharge electrolysis plasma (GDEP) technique in an aqueous solution. To optimize the synthesis conditions, the following parameters are examined in detail: discharge voltage, discharge time, mass ratio of PVP to AAc, and content of crosslinker to acrylic acid. The properties of hydrogels are characterized by thermogravimetric analysis (TGA), scanning electron microscopy (SEM), energy dispersive X‐ray spectrometer (EDS), Fourier transform infrared spectroscopy (FT‐IR), and X‐ray photoelectron spectroscopy (XPS). The results show that both chemical complexation and ion‐exchange play an important role for Pb(II) adsorption onto PVP/AAc hydrogel. Langmuir and Freundlich adsorption models are applied to describe the isotherms at room temperature, and a good agreement between the Langmuir model the experimental data is obtained.