Photo-Fenton Catalyzed by Cu2O/Al2O3: Bisphenol (BPA) Mineralization Driven by UV and Visible Light

This work aimed to demonstrate Cu2O/Al2O3 as a catalyst of the photo-Fenton process in UV and visible spectra. Cu2O nanoparticles were synthesized by laser ablation liquid supported on Al2O3. The catalytic activity resulting solid was assessed mineralization bisphenol A (BPA). studied variables type Al2O3α γ, Cu content (0.5 1%), H2O2 concentration (1, 5, 10 times stoichiometric amount). response BPA total organic carbon (TOC) removal percentage. presence (11 nm) with an irregular sphere-like shape confirmed transmission electron microscopy (TEM) their dispersion over surface verified energy-dispersed spectroscopy (EDS). These particles improve ·OH radical production, thus 100% is achieved along ca. 91% 60 min. oxidation rate increased one order magnitude compared photolysis doubles that for + UV. An increase 40% initial observed when switching from α-Al2O3 γ-Al2O3. 4-hydroxybenzaldehyde, 4-hydroxybenzoic acid, acetaldehyde, acetic acid are by-products identified using LC/MS based this reaction pathway proposed. Finally, it also concluded exhibits not only spectrum but under circumneutral pH. Therefore, can be recommended conduct solar degrade other types molecules.