MIPdatabase
Authors: Luo XB, Guo B, Wang LC, Deng F, Qi RX, Luo SL, Au CT
Article Title: Synthesis of magnetic ion-imprinted fluorescent CdTe quantum dots by chemical etching and their visualization application for selective removal of Cd(II) from water.
Publication date: 2014
Journal: Colloids and Surfaces A: Physicochemical and Engineering Aspects
Volume: 462
Page numbers: 186-193.
DOI: 10.1016/j.colsurfa.2014.09.012
Alternative URL: http://www.sciencedirect.com/science/article/pii/S0927775714007274
Abstract: Abstract A novel magnetic Cd(II)-imprinted fluorescent CdTe quantum dot (Fe3O4@CdTe-IIP) was synthesized through chemical etching strategy without the use of functional monomer and cross-linkers, and was used as an adsorbent for the removal of Cd(II) from water. Fe3O4@CdTe-IIP not only shows much higher adsorption capacity and selectivity for Cd(II) than the non-imprinted counterpart (Fe3O4@CdTe), but also exhibits good photoluminescence and magnetism. The adsorption capacities of Fe3O4@CdTe-IIP and Fe3O4@CdTe for Cd(II) ions are 17.57 and 8.03 mg/g, respectively. The studies of adsorption kinetics show that the adsorption rate of Fe3O4@CdTe-IIP is fast, and the adsorption process fits well with a pseudo-second-order model. Moreover, the progress of the adsorption of Cd(II) ions on Fe3O4@CdTe-IIP can be monitored according to color change of Fe3O4@CdTe-IIP because of its fluorescent recovery
Template and target information: cadmium ion, Cd(II)
Author keywords: Magnetic ion imprinted CdTe quantum dots, EDTA-etching method, Cd(II), selectivity
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