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- W2337880070 abstract "Porous aromatic frameworks (PAFs) incorporating a high concentration of acid functional groups possess characteristics that are promising for use in separating lanthanide and actinide metal ions, as required in the treatment of radioactive waste. These materials have been shown to be indefinitely stable to concentrated acids and bases, potentially allowing for multiple adsorption/stripping cycles. Additionally, the PAFs combine exceptional features from MOFs and inorganic/activated carbons giving rise to tunable pore surfaces and maximum chemical stability. Herein, we present a study of the adsorption of selected metal ions, Sr(2+), Fe(3+), Nd(3+), and Am(3+), from aqueous solutions employing a carbon-based porous aromatic framework, BPP-7 (Berkeley Porous Polymer-7). This material displays high metal loading capacities together with excellent adsorption selectivity for neodymium over strontium based on Langmuir adsorption isotherms and ideal adsorbed solution theory (IAST) calculations. Based in part upon X-ray absorption spectroscopy studies, the stronger adsorption of neodymium is attributed to multiple metal ion and binding site interactions resulting from the densely functionalized and highly interpenetrated structure of BPP-7. Recyclability and combustibility experiments demonstrate that multiple adsorption/stripping cycles can be completed with minimal degradation of the polymer adsorption capacity." @default.
- W2337880070 created "2016-06-24" @default.
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- W2337880070 date "2016-04-12" @default.
- W2337880070 modified "2023-10-16" @default.
- W2337880070 title "Extraction of Lanthanide and Actinide Ions from Aqueous Mixtures Using a Carboxylic Acid-Functionalized Porous Aromatic Framework" @default.
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- W2337880070 doi "https://doi.org/10.1021/acscentsci.6b00066" @default.
- W2337880070 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/4850516" @default.
- W2337880070 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/27163056" @default.
- W2337880070 hasPublicationYear "2016" @default.
- W2337880070 type Work @default.