Highly efficient degradation of organic pollutant mixtures by a Fe(III)-based MOF-catalyzed Fenton-like process in subcritical water

Propylene glycol monomethyl ether acetate (PGMEA) photoresist solvent and monoaromatics are typical organic pollutants found in the wastewater discharged from semiconductor manufacturing processes. Conventional treatment technologies, however, remain mostly ineffective to eliminate these aqueous streams. Herein, we developed a novel strategy for highly efficient degradation of PGMEA archetypal (i.e., benzene, toluene, xylene, phenol, cresol) solution by heterogeneous Fenton-like process with flexible Fe-MOF (MIL-88B) under mild subcritical water (SCW) condition (100 °C). The as-synthesized MIL-88B(Fe) microbipyramids possess large pore channels (∼32 nm) open iron sites. results showed that SCW-mediated at 100 °C an optimal catalyst loading 1 wt% exhibited remarkable performance toward target multicomponent system, affording 92% total carbon (TOC) removal 60 min. This mineralization efficiency was be notably superior those traditional homogeneous Fenton (FeSO4/H2O2; ∼54%) Fenton-SCW (∼60%) practicability this approach demonstrated using real world samples river water, fishpond wastewater) >80% TOC efficiency. study utilizing inexpensive, nontoxic, reusable MOF SCW conditions is promising treating waste effluents environmental matrices containing toxic recalcitrant organics eco-friendly manner.