Using amine-functionalized magnetite hollow nanospheres (AMHNs) as adsorbents for heavy metal ions | Zendy

Sen Lin | Zendy; Lili Liu | Zendy; Yong Yang | Zendy; Wei Zhang | Zendy; Meng Xu | Zendy; Kuangfei Lin | Zendy

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Using amine-functionalized magnetite hollow nanospheres (AMHNs) as adsorbents for heavy metal ions

Author(s) -

Sen Lin,

Lili Liu,

Yong Yang,

Wei Zhang,

Meng Xu,

Kuangfei Lin

Publication year - 2017

Publication title -

water science and technology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.406

H-Index - 137

eISSN - 1996-9732

pISSN - 0273-1223

DOI - 10.2166/wst.2017.225

Subject(s) - adsorption , magnetite , metal ions in aqueous solution , metal , ionic strength , fourier transform infrared spectroscopy , amine gas treating , langmuir adsorption model , chemistry , inorganic chemistry , kinetics , ion , transmission electron microscopy , nuclear chemistry , materials science , chemical engineering , aqueous solution , organic chemistry , nanotechnology , metallurgy , physics , quantum mechanics , engineering

In this paper, the amine-functionalized magnetite hollow nanospheres (AMHNs), prepared through a facile one-pot synthesis, were used as heavy metal ion adsorbents, whose morphology and physicochemical features were exploring by transmission electron microscopy, vibrating sample magnetometer, X-ray diffraction and Fourier-transform infrared analyses. Its adsorption performances for Pb 2+ , Cu 2+ , Zn 2+ , Ni 2+ and Cd 2+ were studied in detail. The adsorption increased with the increase of initial pH value of the solution and could be obviously affected by ionic strength. Also, the adsorption kinetics and isotherms were studied. The adsorption processes for Pb 2+ , Cu 2+ , Zn 2+ , Ni 2+ and Cd 2+ could all reach equilibrium in 60 min and be described well by the Langmuir thermodynamics model. The saturated adsorption capacities for Pb 2+ , Cu 2+ , Zn 2+ , Ni 2+ and Cd 2+ were 0.66, 0.47, 0.45, 0.38 and 0.26 mmol/g, respectively. In addition, the competitive adsorption showed the AMHNs had higher affinity to Pb 2+ han to other heavy metal ions.

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