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Synthesis, Characterization and Adsorption Behavior of Cd(II) Ion-Imprinted Mesoporous Materials

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Cd(II) ion-imprinted mesoporous (IIM) materials were synthesized using surface imprinting technique. The materials were characterized by TEM, FTIR, XRD and the adsorption behavior of the materials towards Cd(II) in aqueous solution was studied. The results show that the material has a typical mesoporous structure with the average pore size of 6.23 nm. The batch adsorption experiments were performed using the prepared ionic imprinted mesoporous material as absorbent. The effects of adsorption time, temperature and pH on the adsorption capacity were investigated. Additionally, the thermodynamics and kinetics analyses were also carried out. The results demonstrate that the adsorption capacity is 49.6 mg · g–1 when the adsorption time is 1 h, the temperature is 25 °C and pH is 7.0. The removal efficiency can exceed 80%. The adsorption is a spontaneous, exothermic and entropy decrease process based on the results of adsorption thermodynamics. The obtained ionic imprinted mesoporous material possesses high adsorption capacity towards Cd(II) and can be reused.
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Keywords: ADSORPTION MECHANISM; CD(II); IONIC IMPRINTING; MESOPOROUS MATERIALS

Document Type: Research Article

Publication date: March 1, 2018

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  • Science of Advanced Materials (SAM) is an interdisciplinary peer-reviewed journal consolidating research activities in all aspects of advanced materials in the fields of science, engineering and medicine into a single and unique reference source. SAM provides the means for materials scientists, chemists, physicists, biologists, engineers, ceramicists, metallurgists, theoreticians and technocrats to publish original research articles as reviews with author's photo and short biography, full research articles and communications of important new scientific and technological findings, encompassing the fundamental and applied research in all latest aspects of advanced materials.
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