"

Cookies ussage consent

Our site saves small pieces of text information (cookies) on your device in order to deliver better content and for statistical purposes. You can disable the usage of cookies by changing the settings of your browser. By browsing our site without changing the browser settings you grant us permission to store that information on your device.

I agree, do not show this message again.

Core@shell Fe3O4@SiO2-NH2: a convenient reusable adsorbent towards Pb(II)

J. P. LI1,* , Y. LI1, L. S. LIU1

Affiliation

  1. School of Chemical Engineering and Environment, North University of China, Xueyuan Road 3, Taiyuan, Shanxi, China 030051

Abstract

Monodisperse and spherical Fe3O4@SiO2-NH2 nanomaterials have been prepared by co-condensation of TEOS with APTMS employing a green sol-gel process. The Fe3O4@SiO2-NH2 nanoparticles prepared under optimum conditions possess uniform core-shell structure (~ 200 nm in diameter), relatively high loading of amino-functionality (~ 5.45 wt %), being easily magnetically separated and effective in the removal of Pb(II) (qm = 243.9 mg/g, 25oC). The adsorption equilibrium data obeyed the Langmuir model reasonably. These results demonstrated that the sol-gel produced Fe3O4@SiO2-NH2, due to its easy synthesis and recovery and eco-friendliness, can be a potential adsorbent for Pb(II) removal..

Keywords

Amino-functionalized, Magnetic adsorbent, Adsorption, Pb(II) ions.

Submitted at: March 3, 2014
Accepted at: Nov. 13, 2014

Citation

J. P. LI, Y. LI, L. S. LIU, Core@shell Fe3O4@SiO2-NH2: a convenient reusable adsorbent towards Pb(II), Journal of Optoelectronics and Advanced Materials Vol. 16, Iss. 11-12, pp. 1425-1429 (2014)