Highly reactive species formed by interface reaction between Fe0–iron oxides particles: An efficient electron transfer system for environmental applications

Photoassisted degradation of endocrine disruptors over CuOx–FeOOH with H2O2 at neutral pH

“…Therefore, H 2 O 2 decomposition was used directly to evaluate the performance of different Fenton catalysts [14,25]. However, no significant correlation was found between H 2 O 2 decomposition and the catalyst's activity for different Fenton processes in our study.…”

“…However, few studies were conducted to investigate the catalytic activity of a nanoscale bimetallic catalyst consisting of Cu and Fe in degrading EDs via photo-Fenton reaction. Moreover, in the previous works [13,14], the decomposition rate of H 2 O 2 was usually a versatile indicator for the activity of different Fenton catalysts. It is very necessary to verify the veracity about the estimation.…”

Heterogeneous UV/Fenton degradation of TBBPA catalyzed by titanomagnetite: Catalyst characterization, performance and degradation products

“…In titanomagnetite, the valences of iron are þ3 and þ2 (Yang et al, 2009a). Based on the principle of electrovalence equilibrium (Pearce et al, 2010) generation, the electrovalence equilibrium was balanced by producing oxygen vacancy and structural defect compensation (Liu et al, 2008;Moura et al, 2006).…”

Waste Water Treatment Methods

“…By using a zero-valent iron with iron oxide composite catalysts, the oxidation process proceeds via hydroxyl radicals generated from Fe 2+ (surf) species and H2O2 in a Fenton like mechanism. The Fe 2+ (surf) species are formed by electron transfer from Fe 0 to Fe 3+ at the interface metal/oxide (Moura et al, 2005(Moura et al, , 2006. The experimental data (Nie et al, 2008) indicate that the hydrogen peroxide provides a driving force in the electron transfer from Fe 2+ to Fe 3+ , while the degradation of organic pollutants increases the electron transfer at the interface of Fe 0 /iron oxide due to their reaction with hydroxyl radicals.…”