Liquid-liquid extraction of cadmium with high-molecular-weight amines from iodine solutions

Cation‐Induced Unidirectional Self‐Assembly of Amino‐Terminated Poly(propylene imine) Dendrimers

“…The proposed mechanism of fiber formation is shown schematically in Figure 1c. When Cd(CH 3 COO) 2 is added to the aqueous dendrimer solutions (0.3 m M ), the Cd II cations coordinate to the peripheral primary amines 26. These Cd II cations can form multiple coordination bonds with the mono­dentate peripheral primary amines of the dendrimers.…”

Hybrid Nanoalloy: Nanofibers Fabricated by Self‐Assembling Dendrimers Mediate In Situ CdSe Quantum Dots and Their Metallization with Discrete Gold Nanoparticles

“…When Cd(AcO) 2 is added to the aqueous PPI‐G4 solutions (0.3 × 10 −3 M ), the Cd II cations coordinate to the peripheral primary amines at pH 8.3. The high affinity of primary amines for Cd II has been reported to enable the effective extraction of Cd II ions from solution (Figure 2‐SI, Supporting Information) 21. While the pH value decreases, a selective protonation of the peripheral primary amines takes place to induce a change in the PPI conformation into a more extended anisotropic structure 18, 22.…”

Wastewater treatment by liquid membrane process

“…For separations of inorganic ions, an ion carrier was added to the oil phase. This was Alamine 336, a Cg-Cio tertiary amine for chromium and mercury removal (15,16), Lix 64N, a mixture of two oxime compounds for copper separation (17), or Aliquat 336 (methyltrioctylammonium chloride) for cadmium removal (18). All ion carriers were obtained from the General Mills Corp.…”

“…Figure 5 also shows the removal of mercury, copper, and cadmium (curves 2-4, respectively), by the facilitated transport mechanism in liquid membrane systems. Solvent extractions of these metals have been reported (16)(17)(18). The reported techniques employ two-step procedures (extraction plus stripping) similar to those shown above for chromium.…”