2D/1D protonated g-C3N4/α-MnO2 Z-scheme heterojunction with enhanced visible-light photocatalytic efficiency

Controllable Anchoring of Graphitic Carbon Nitride on MnO2 Nanoarchitectures for Oxygen Evolution Electrocatalysis

“…Manganese photoelectron peaks are displayed in Figure 8. For bare MnO 2 , the obtainment of manganese(IV) oxide was confirmed by Mn 2p signal shape and position [Table S3; BE(Mn 2p 3/2 ) = 642.6 eV; 15,30,44,62 spin−orbit splitting (SOS) = 11.6 eV 1, 41,43,44 ], as well as by Mn 3s multiplet splitting separation 45,62 (Table S4). For composite materials, Mn 2p and Mn 3s energy positions underwent a red shift in comparison to MnO 2 (−0.2 eV for MnO 2 −M-180 and −0.4 eV for MnO 2 −CM-45; Tables S3 and S4).…”

MOF-5-derived ZnO–C nanoparticles combined with α-MnO2 for the efficient degradation of tetracycline under visible light

“…44-0141). 34 Noticeably, the typical diffraction peaks of ZnO–C and α -MnO 2 were observed in the XRD patterns of the prepared x -MZ composites, implying that the α -MnO 2 /ZnO–C composite was successfully synthesized. Moreover, it was found that the intensity of the typical diffraction peaks for α -MnO 2 gradually increased with the increase in content of α -MnO 2 .…”

“…It could be seen that ZnO-C and a-MnO 2 were well compounded and in close contact with each other. The lattice distance of 0.69 nm corresponded to the (110) plane of a-MnO 2 34 and the lattice fringe of 0.261 nm was assigned to the (100) crystal plane of ZnO-C. 35 The SEM and HRTEM analyses indicated that the obtained ZnO-C nanoparticles and a-MnO 2 were well crystallized, uniformly distributed, and intimately connected at the interface. According to the EDX spectrum (Fig.…”

Fabrication of Mn/P co-doped hollow tubular carbon nitride by a one-step hydrothermal–calcination method for the photocatalytic degradation of organic pollutants

“…Doping Mn broadens the visible light response range of CN, which may be attributed to Mn being a black metal with strong light absorption. 62 In the inset, CN is a yellow powder, Mn–CN is brown, PCN is light yellow, and Mn–PCN is gray. The light absorption capacity of Mn–PCN is stronger than those of CN, PCN, and Mn–CN, showing that Mn and P co-doping produces a synergistic effect.…”