Bridge-bonded Mn-O-Mn interfaces decouple PMS adsorption from activation toward singlet-oxygen-selective water decontamination
Bridge-bonded Mn-O-Mn interfaces decouple PMS adsorption from activation toward singlet-oxygen-selective water decontamination
研究概述
在C3N5上构筑Mn3O4/Mn单原子异质结构，以Mn—O—Mn桥联界面分离PMS吸附和活化过程，抑制过度电子供给及自由基断裂，偏向单线态氧路径。土霉素降解表现提升，并耐受常见阴离子、天然水基质及再生循环；仍存在少量自由基共同参与。
谱图与表征信息
Fig. 2. (a) Mn 2p XPS spectra. (b) Mn K-edge XANES of Mn foil, Mn3O4, Mn1/C3N5 and Mn3O4@Mn1/C3N5. (c) k2-weighted FT-EXAFS magnitude (R-space) for the same series. (d–e) EXAFS fitting in R and k space for Mn1/C3N5 and Mn3O4@Mn1/C3N5. (f) Corresponding atomistic models of Mn coordination. (g) Wavelettransform (WT) EXAFS contour maps.