Enhanced Fenton-like degradation of pharmaceuticals over framework copper species in copper-doped mesoporous silica microspheres

Degradation of benzotriazole by a novel Fenton-like reaction with mesoporous Cu/MnO 2 : Combination of adsorption and catalysis oxidation

“…6(A)). This differs from the conventional homogeneous Fenton reaction and heterogeneous Fenton-like reaction using copper [31]. In order to confirm this result, a series of isopropanol (IPA) solutions (0.5-500 mmol L −1 ; k IPA,·OH =1.9  10 9 M −1 s −1 ) [49] were used as another scavenger of ·OH.…”

“…Figure 2(C) shows O 1s spectra, as peaks at 530 and 532 eV were assigned to lattice oxygen and surface hydroxyl groups, respectively [28,29]. MM showed a stronger lattice oxygen peak and weaker surface hydroxyl group peak than MCM, indicating that copper incorporation increased more oxygen defect leading more density of surface hydroxyl groups that was conventional reaction sites for surface adsorption [30] and catalytic oxidation [31]. Temperature-programmed reduction (TPR) was performed to investigate the oxidation-reduction properties of the samples (Fig.…”

Galvanic-like cells produced by negative charge nonuniformity of lattice oxygen on d-TiCuAl–SiO2 nanospheres for enhancement of Fenton-catalytic efficiency

“…24 Diphenhydramine (DP), ciprofloxacin (CIP) and phenytoin (PHT) are representative pharmaceutical compounds, which have been detected in waste effluents from pharmaceutical manufacturers. 19 …”

“…S1b, ESI †) are developed to address these problems: 11,12 however, few of them exhibit significant catalytic efficiency at neutral pH values in water, and they typically use a large excess of H 2 O 2 (above the stoichiometric amount by 100-fold) to reach a desirable efficiency of these materials. 13 17,18 or the aromatic products of the pollutants, 16,19 adding UV irradiation, 20 and establishing a precious metal Fenton system to utilize phenol. 7 These works provide new insight into the enhancement of the Fenton-catalytic efficiency.…”

Preparation and electrochemical property of TiO2/Nano-graphite composite anode for electro-catalytic degradation of ceftriaxone sodium

“…So many efforts and techniques with low consumption and high efficiency have been made to solve the problems [1][2][3][4]. Of which, advanced oxidation processes (AOPs), taking advantage of the characters of effective catalyzing and oxidating the organic contaminant in the wastewater, stand out among numerous methods.…”