期刊
JOURNAL OF INORGANIC AND ORGANOMETALLIC POLYMERS AND MATERIALS
卷 32, 期 1, 页码 161-168出版社
SPRINGER
DOI: 10.1007/s10904-021-02108-9
关键词
Surface ion-imprinted polymer; APTES; MCM-41; Selectivity
资金
- Nature Science Foundation of China [51664042]
In this study, La-IIP was prepared using APTES as the functional monomer, reamed MCM-41 as the carrier, and epichlorohydrin as the crosslinking agent. The adsorption behavior and mechanism of La-IIP were investigated, showing strong selectivity for La(III) with stability and reusability. Overall, La-IIP demonstrated excellent adsorption capacity and potential for practical applications.
In this paper, APTES was used as the functional monomer, reamed MCM-41 was used as the carrier, and epichlorohydrin was used as the crosslinking agent to prepare the Lanthanide ion-imprinted polymer, La-IIP. The effects of pH, time, temperature, and initial concentration on La-IIP adsorption were investigated, and the adsorption mechanism was discussed by fitting the adsorption data to various kinetic and thermodynamic models. The results showed that La-IIP reached adsorption equilibrium in 20 min at 338 K and pH = 5, and the maximum adsorption capacity was 272.2 mg/g. The La-IIP adsorption process conformed to the Langmuir adsorption model, and La-IIP showed strong selectivity for La(III) in the presence of interfering ions with similarproperties. 2 M hydrochloric acid solution was used to eluate La-IIP and re-adsorb lanthanum ion solution. After elution of La-IIP for five times, the adsorption remained at the initial value of 81%. It shows that La-IIP has stability and reusability.
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