Cation‐functionalized silica nanoparticle as an adsorbent to selectively adsorb anionic dye from aqueous solutions. Issue 4 (15th February 2016)

• Record Type: Journal Article
• Authors: Zhang, Libo; Zhang, Gengwei; Wang, Shixing; Peng, Jinhui; Cui, Wei
• Is Part Of: Environmental progress & sustainable energy. Volume 35:Issue 4(2016:Dec.)
• Page Start: 1070
• Page End: 1077
• Publication Date: 2016-02-15
• Subjects: silica nanoparticles -- absorbent -- dyes; Environmental engineering -- Periodicals; Sustainable engineering -- Periodicals; Environmental chemistry -- Periodicals; 333.7
• DOI: 10.1002/ep.12333
• Languages: English
• ISSNs: 1944-7442

Abstract

Abstract : 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