Effıcıent photocatalytıc degradatıon of the pharmaceutical ibuprofen over Fe-FSM-16 photo-catalyst under UV ırradıatıon

Studies on the Application of PGM Nanocatalysts from Spent Automotive Converters for Degradation of Ibuprofen in Aqueous Solutions

“…In the present investigation, the degradation of IB was observed to occur more rapidly in the presence of Pt@TiO 2 compared to Pd@TiO 2 , with rate constants of 0.0877 min −1 and 0.0776 min −1 , respectively. Remarkably, the rate constant shown by Pt@TiO 2 was found to be tenfold greater than that reported for IB degradation in the presence of iron-doped mesoporous silica (Fe–FSM–16) [ 32 ]. This enhancement in catalytic activity highlights the performance of Pt@TiO 2 in facilitating IB degradation, making it a promising material for pharmaceutical removal applications.…”

“…Fe–NPs are known to indirectly enhance catalysis by participating in Fenton-like reactions, wherein iron reacts with hydrogen peroxide (H 2 O 2 ) to generate highly reactive hydroxyl radicals ( • OH) [ 33 , 34 ]. Although H 2 O 2 was not intentionally added during the course of the IB degradation in the presented studies, it is noteworthy that H 2 O 2 can be formed in systems catalyzed with Fe–FSM–16, particularly under UV-induced photodegradation conditions [ 32 ]. In addition, the interaction between metal NPs and IB plays an important role in facilitating IB adsorption onto the catalyst surface, improving the contact between the catalyst and the target molecule, and thus promoting its degradation [ 35 , 36 ].…”