Abstract
Magnetic substrates are favorable for separating adsorption-saturated powder adsorbents from solutions. Here, a core-shell magnetic potassium nickel copper hexacyanoferrate composite (MKNiCuFC@ZIF-8) modified with zeolitic imidazolate frameworks was synthesized for selective extraction of rubidium (Rb) in solution. MKNiCuFC@ZIF-8 was analyzed in depth using N2 adsorption-desorption, SEM, XRD, FT-IR, XPS, etc. Batch experiments were employed to assess the adsorption properties of MKNiCuFC@ZIF-8 for Rb+. The adsorption behavior based on the exchange behaviors of Rb+ and K+ conforms to the pseudo-second-order kinetic model. Meanwhile, the adsorption data are well fitted through the Langmuir isotherm model and reached a maximum adsorption amount of 1030.69 mg g−1 at 45 °C. Furthermore, MKNiCuFC@ZIF-8 could be regenerated with 90.3 % of absorbed Rb+ being desorbed in 1 mol L−1 of KCl within 24 h.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
