Floating MIL-88A(Fe)@expanded perlites catalyst for continuous photo-Fenton degradation toward tetracyclines under artificial light and real solar light

Sustainable production and applications of metal–organic frameworks

“…50 More interestingly, according to Pearson's hard–soft-acid–base theory, Fe 3+ and Cr 3+ are stronger Lewis acids than Ni 2+ , so Fe 3+ and Cr 3+ tend to react with Lewis bases like BDC. 2–51 Furthermore, Fe 3+ and Cr 3+ , with their higher oxidative states, are more likely to form covalent bonds when interacting with deprotonated organic linkers. 52 As a result, the introduction of H 2 BDC into steel pickling wastewater can trigger selective coordination between Fe 3+ or Cr 3+ and BDC 2− , accomplishing the purification of Ni 2+ at the same time.…”

“…Over the past decades, metal–organic frameworks (MOFs) have captured widespread interest. They have been extensively employed in gas storage, 1,2 drug delivery, 3,4 energy transformation, 5,6 adsorption, 7,8 catalysis, 9–13 antibacterial applications, 14,15 sensing, 16,17 and separation of compounds from aqueous 18,19 or gaseous media, 20–22 benefiting from their large surface area, tunable structures and high porosity.…”