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Cation‐functionalized silica nanoparticle as an adsorbent to selectively adsorb anionic dye from aqueous solutions
Author(s) -
Zhang Libo,
Zhang Gengwei,
Wang Shixing,
Peng Jinhui,
Cui Wei
Publication year - 2016
Publication title -
environmental progress and sustainable energy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.495
H-Index - 66
eISSN - 1944-7450
pISSN - 1944-7442
DOI - 10.1002/ep.12333
Subject(s) - adsorption , aqueous solution , nanoparticle , langmuir adsorption model , x ray photoelectron spectroscopy , chemistry , fourier transform infrared spectroscopy , methyl orange , inorganic chemistry , kinetics , chloride , chemical engineering , materials science , organic chemistry , catalysis , nanotechnology , physics , photocatalysis , engineering , quantum mechanics
Silica nanoparticles were functionalized by cation (3‐(trimethoxysilyl)‐propyldimethyloctadecylammonium chloride.) The functionalized silica nanoparticles were used to adsorb anionic dye (xylenol orange) from aqueous solution. The functionalized silica nanoparticles were characterized by XPS and FTIR. The effects of pH, initial concentration, contact time and salts were evaluated. Results showed that the functionalized silica nanoparticles effectively adsorbed anionic dyes from water solution. The adsorption kinetics described well by the pseudo‐first‐order kinetic model. The adsorption isotherms fitted well with the Langmuir isotherm. The results indicated that the controlling mechanism of adsorption processes was electrostatic adsorption. © 2016 American Institute of Chemical Engineers Environ Prog, 35: 1070–1077, 2016