| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 5347328 | Applied Surface Science | 2017 | 7 Pages |
Abstract
In the study, the influence resulting from thiol-functionalization on Fe3O4-based superparamagnetic nanoadsorbents was investigated in detail, involving various physicochemical properties, especially, the contradiction between adsorption performance and magnetic recovery. The experimental results demonstrated clearly that the aqueous dispersibility and stability of the Fe3O4-SH nanoparticles were positively related with the thiolation while the magnetic response and recovery efficiency in aqueous solution had negative correlations with the amount of SH-groups on the surface. In addition, the adsorption performances for Cd2+ using the Fe3O4-SH nanoparticles with different thiolation degrees were also studied comprehensively, which were all sensitive to pH and ionic strength and varied with a similar trend. Meanwhile, the adsorption kinetics and isotherms manifested that the initial adsorption rates and adsorption capacities could also be positively correlated with higher thiolation degree on the nanoadsorbent surface.
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Authors
Sen Lin, Yong Yang, Gong Chen, Xin Chen, Wei Zhang, Meng Xu, Lili Liu, Kualngfei Lin,