In-situ growth of amorphous MnO2 on C-decorated Fe-based geopolymer sphere with rich structure defects for efficient solar light-induced photo-thermal-Fenton reaction

Oriented generation of singlet oxygen in H2O2activation for water decontamination: regulation of oxygen vacancies over α-MnO2nanocatalysts

“…Generally, the symmetrical EPR signal located at g = 2.0 represents the unpaired electrons trapped by oxygen vacancies in the catalysts. 29,30 As shown in Fig. 2h, only α-MnO 2 had a distinct signal intensity centered at g = 2.005, verifying its most abundant oxygen vacancies.…”

“…This journal is © The Royal Society of Chemistry 2023 vacancies in the catalysts. 29,30 As shown in Fig. 2h, only α-MnO 2 had a distinct signal intensity centered at g = 2.005, verifying its most abundant oxygen vacancies.…”

Manganese Oxide Hydrogel for Efficient Removal of Volatile Organic Compound in the Photothermal Water Purification

“…It was also reported that MnO 2 nanomaterials might exhibit photothermal catalytic degradation of pollutants due to their excellent thermal conversion ability. [ 55 ] In further experiments, the photothermal catalysis degradation of phenol was examined by the temperature of the reaction solution (25–50 °C), which was controlled by using a water‐cooled device and under irradiation of xenon light. The phenol degradation efficiency ( C / C 0 ) at different temperatures is shown in Figure 6f.…”

Biosensing of Cysteine through the Induction of Oxygen Vacancies in a Cu/Zr Heterostructure Prepared by Supercritical Antisolvent Technique

“…When the transformation from an amorphous state to a crystalline state occurs, the atoms or molecules undergo reconfiguration to establish an ordered crystalline structure. − Hence, the transition from an amorphous state to a crystalline one generally accompanies a heightened generation of imperfections compared to transitions between different crystal phases. − This phenomenon can be attributed to the formation of amorphous zirconium oxide during the calcination process of the zirconium salt precursor. The amorphous phase, characterized by higher reactivity, can reduce the reaction barrier to some extent, facilitating the phase transition .…”