Asset Details
Do you wish to reserve the book?
Outpacing sol-gel-prepared magnesium fluoride for rare earth element separation by mixed mechanisms over many second-group fluorides
Hey, we have placed the reservation for you!
By the way, why not check out events that you can attend while you pick your title.
Oops! Something went wrong.
Looks like we were not able to place the reservation. Kindly try again later.
Are you sure you want to remove the book from the shelf?
Outpacing sol-gel-prepared magnesium fluoride for rare earth element separation by mixed mechanisms over many second-group fluorides
Do you wish to request the book?
Outpacing sol-gel-prepared magnesium fluoride for rare earth element separation by mixed mechanisms over many second-group fluorides
Please be aware that the book you have requested cannot be checked out. If you would like to checkout this book, you can reserve another copy
We have requested the book for you!
Your request is successful and it will be processed during the Library working hours. Please check the status of your request in My Requests.
Oops! Something went wrong.
Looks like we were not able to place your request. Kindly try again later.
Journal Article
Outpacing sol-gel-prepared magnesium fluoride for rare earth element separation by mixed mechanisms over many second-group fluorides
2025
Overview
The synthesis, characterization, and testing of new inorganic compounds as perspective adsorbents or ion exchangers are of significant importance. Magnesium fluoride is a well-known inorganic compound that is affordable and widely used in various scientific and industrial applications. A series of adsorption experiments have been conducted, including investigations of pH range, magnesium fluoride dose weights, initial concentration of the Rare earth elements (REEs) and adsorption time. An outstanding finding regarding magnesium fluoride as an adsorbent is that REEs were separated at pH 1 through ion exchange and at pH 4 through adsorption mechanisms, showing nearly identical uptake of 191 mg/g. Under optimal adsorption conditions, the REEs were adsorbed on magnesium fluoride with an uptake of 302.4 mg. The morphological traits of magnesium fluoride were characterized using energy dispersive spectroscopy (EDS), scanning electron microscope (SEM) and Fourier-transform infrared spectroscopy (FTIR). Kinetically, the adsorption of REEs on magnesium fluoride aligns with the pseudo-second-order model and exhibits a theoretical loading capacity of 310 mg/g. What’s more, isothermally, the adsorption of REEs corresponds to the Langmuir model and predicts a theoretical uptake of 305 mg/g. Interference studies indicate that magnesium fluoride is a promising adsorbent and exhibits notable selectivity. The study suggested that magnesium fluoride has shown a higher saturation capacity compared to other Group IIA fluorides. From a sustainability perspective, magnesium fluoride has been sourced from the Mediterranean Sea. This approach achieved a REEs separation capacity of 308.7 mg/g after implementing all the optimum sol-gel magnesium fluoride adsorption conditions.
Graphical Abstract
Highlights
Synthesis of an affordable, selective and sustainable sorbent magnesium fluoride (MgF
2
) for rare earth elements (REEs) capture.
The magnesium fluoride separates REEs in the pH range of 1–4 at the same REEs saturation capacity and efficacy, practically, the separation of REEs at pH 1 occurred entirely by ion exchange mechanism, and by adsorption mechanism at pH 4.
Magnesium fluoride demonstrates optimal selectivity at pH 1 and exhibits moderate selectivity at pH 4.
Magnesium fluoride outperformed other Group 2 fluorides in REEs separation in the following order: MgF
2
> CaF
2
> BaF
2
> SrF
2
.
The Mediterranean Sea was utilized as a sustainable magnesium source and effectively separated REEs.
Publisher
Springer US,Springer Nature B.V
Subject
