Construction of CeO2/YMnO3 and CeO2/MgAl2O4/YMnO3 photocatalysts and adsorption of dyes and photocatalytic oxidation of antibiotics: Performance prediction, degradation pathway and mechanism insight

Construction of Z-Scheme Ag2MoO4/ZnWO4 Heterojunctions for Photocatalytically Removing Pollutants

“…The ·OH radicals are produced mainly through the coupling of the light-generated h + in ZWO VB with OH – (or H 2 O) species, which are thermodynamically feasible since the VB position of ZWO (+3.52 V vs NHE) is sufficiently positive in terms of the H 2 O/·OH redox (+2.38 V vs NHE) and OH – /·OH redox (+1.99 V vs NHE). , The CB potential of AMO (−0.33 V vs NHE) is very close to the O 2 /·O 2 – redox (−0.33 V vs NHE), indicating that the formation of ·O 2 – radicals is realized through the reaction between the electrons at higher excitation states of AMO and O 2 species. Thus, the photodegradation mechanism of the AMO/ZWO heterojunctions can be described by the reactions of eqs –. AMO / ZWO + h v → AMO false( normale − + normalh + false) / ZWO false( normale − + normalh + false) AMO false( normale − + normalh + false) / ZWO false( normale − + normalh + false) → AMO false( normale − false) / ZWO false( normalh + false) e − false( normalAMO false) + O 2 → · normalO…”

“…73,74 As illustrated in Figure S4, the photodegradation efficiency of MB is appreciably reduced by introducing ammonium oxalate (AO) or isopropanol (IPA) into the reaction system, verifying a dominant role of h + and •OH in the dye decomposition. In contrast, the introduction of benzoquinone 75,76 The CB potential of AMO (−0.33 V vs NHE) is very close to the O 2 /•O 2 − redox (−0.33 V vs NHE), 77 indicating that the formation of •O 2 − radicals is realized through the reaction between the electrons at higher excitation states of AMO and O 2 species. Thus, the photodegradation mechanism of the AMO/ZWO heterojunctions can be described by the reactions of eqs 5−10.…”

Selective removal of antibiotics over MgAl2O4/C3N4/YMnO3 photocatalysts: Performance prediction and mechanism insight

“…Such charge transfer promoted the separation of charge carriers in the MAO–CN–YMO heterojunction photocatalysts and enhanced the photocatalytic activity of the system. The conduction electrons react with oxygen in the reaction solution to form superoxide radicals (•O 2 − ) and eventually hydroxyl radicals (•OH) due to the redox potential of O 2 /•O 2− and O 2 /H 2 O 2 is −0.130 and 0.695 V, respectively 69–71 . The detailed expression of photocatalytic reaction is as follows: $$$$\begin{equation}{e_{{\rm{CB}}}}^ - + {{\rm{O}}_2} \to \bullet {{\rm{O}}_2}^ - \end{equation}$$$$ $$$$\begin{equation} \bullet {{\rm{O}}_2}^ - + {\rm{ }}2{{\rm{H}}^ + } + {e_{{\rm{CB}}}}^ - \to {{\rm{H}}_{\rm{2}}}{{\rm{O}}_{\rm{2}}}\end{equation}$$$$ $$$$\begin{equation}2{e_{{\rm{CB}}}}^ - + {\rm{ }}{{\rm{O}}_2} + {\rm{ }}2{{\rm{H}}^ + } \to {\rm{ }}{{\rm{H}}_{\rm{2}}}{{\rm{O}}_{\rm{2}}}\end{equation}$$$$ $$$$\begin{equation}{e_{{\rm{CB}}}}^ - + {{\rm{H}}_{\rm{2}}}{{\rm{O}}_{\rm{2}}} \to \bullet {\rm{OH}} + {\rm{O}}{{\rm{H}}^ - }\end{equation}$$$$ $$$$\begin{equation} \bulle...$$…”

Hexagonal Lead Ferrite Magnetic Separation Catalysts: Synthesis, Optical Characterization, Ultrasonic Catalytic Activity and Performance Prediction

“…An artificial neural network algorithm is an efficient method to predict the physical and chemical properties of semiconductor materials [50,51] . On the basis of obtaining a large number of data, the artificial neural network model was established to train the data to conform to the corresponding rules.…”