Effective adsorption of dysprosium ions on amino and carboxyl functionalized mesoporous silica sheets

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ID: 74389
2019
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Abstract
Securing a stable supply of dysprosium (Dy) is one of the major problems facing the automotive industry due to increased Dy consumption and low-volume production. Investigations of new recycling methods are therefore extremely important. In this study, we focused on mesoporous silica particles (MPS) with tunable nanoscale mesopores (2–50 nm), large surface areas, high pore volumes, and abundant surface chemistry. To perform adsorption experiments with several metal ions in the solution, the silica materials were treated via amino functionalization using silane coupling reagents, 3-aminopropyltriethoxysilane (APTES), N-(2-aminoethyl)-3-aminopropyltriethoxysilane (N2APTES), and N-(6-aminohexyl)-3-aminopropyltrimethoxysilane (N6APTES), as well as via carboxyl functionalization using diglycolic acid. Interestingly, MPS sheet-2HNHCOOH, a product with a sheet-like morphology, exhibited enhanced Dy ion adsorption (13.3 µg/mg). The sheets retained approximately100% in the initial capacity after 10 cycles. The results suggest that MPS sheet-2HNHCOOH is an appropriate a candidate material for selective Dy ion adsorption.
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Authors Kaneko, Takamasa;Hikosaka, Ryouichi;Nagata, Fukue;Inagaki, Masahiko;Kato, Katsuya;
Journal journal of asian ceramic societies
Year 2019
DOI
DOI not found
URL
http://dx.doi.org/10.1080/21870764.2019.1606139
Keywords
Therapeutics. Pharmacology Technology (General) business economics as a science management. industrial management transportation and communications regional economics. space in economics shipment of goods. delivery of goods production management. operations management clay industries. ceramics. glass

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