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Journal of Nanoparticle Research
Erschienen in: Journal of Nanoparticle Research 6/2010

01.08.2010 | Research Paper

Synthesis of thiol-functionalized MCM-41 mesoporous silicas and its application in Cu(II), Pb(II), Ag(I), and Cr(III) removal

verfasst von: Shengju Wu, Fengting Li, Ran Xu, Shihui Wei, Guangtao Li

Erschienen in: Journal of Nanoparticle Research | Ausgabe 6/2010

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Abstract

Thiol-functionalized MCM-41 mesoporous silicas were synthesized via evaporation-induced self-assembly. The mesoporous silicas obtained were characterized by X-ray diffraction (XRD), nitrogen adsorption–desorption analysis, Fourier transform infrared spectroscopy (FTIR), elemental analysis (EA), transmission electron microscopy (TEM), and scanning electron microscopy (SEM). The products were used as adsorbents to remove heavy metal ions from water. The mesoporous silicas (adsorbent A) with high pore diameter (centered at 5.27 nm) exhibited the largest adsorption capacity, with a BET surface area of 421.9 m2 g−1 and pore volume of 0.556 cm3 g−1. Different anions influenced the adsorption of Cu(II) in the order NO3 − < OAc− < SO4 2− < CO3 2− < Cit− < Cl−. Analysis of adsorption isotherms showed that Cu2+, Pb2+, Ag+, and Cr3+ adsorption fit the Redlich–Peterson nonlinear model. The mesoporous silicas synthesized in the work can be used as adsorbents to remove heavy metal ions from water effectively. The removal rate was high, and the adsorbent could be regenerated by acid treatment without changing its properties.
Vorheriger Artikel Investigation of Mg(OH)2 nanoparticles as an antibacterial agent
Nächster Artikel Single-walled carbon nanotube formation on iron oxide catalysts in diffusion flames

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Metadaten
Titel
Synthesis of thiol-functionalized MCM-41 mesoporous silicas and its application in Cu(II), Pb(II), Ag(I), and Cr(III) removal
verfasst von
Shengju Wu
Fengting Li
Ran Xu
Shihui Wei
Guangtao Li
Publikationsdatum
01.08.2010
Verlag
Springer Netherlands
Erschienen in
Journal of Nanoparticle Research / Ausgabe 6/2010
Print ISSN: 1388-0764
Elektronische ISSN: 1572-896X
DOI
https://doi.org/10.1007/s11051-009-9770-3

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