Non-metallic hollow porous sphere loaded CN/catalytic ozonation synergistic photocatalytic system: Enhanced treatment of emerging pollutants by three-stage cyclic reaction mechanism

The 2D van der Waals heterojunction MoC@NG@CN for enhanced photocatalytic hydrogen production

“…2b, the high-resolution spectrum of C 1s for MoC@NG-70@CN shows two distinct peaks located at 288.16 and 284.80 eV, which are assigned to C–N bonds in triazine units of CN and C–C bonds from surface adventitious carbon, respectively. 41 The N 1s spectrum (Fig. 2c) is deconvoluted into four peaks at 398.59, 400.08, 401.16 and 404.05 eV, which are ascribed to CN–C, N–(C) 3 , C–NH x and π excitons in heterocycles, respectively.…”

Nitrogen and Sulfur Codoped Hierarchical Porous Carbon Derived from Lignin for High-Performance Zinc Ion Capacitors

“…Furthermore, the peak observed at 1385 cm –1 was attributed to the bending vibration of the C–H bond, and the peak detected at 1118 cm –1 corresponded to the stretching vibration of the C–O bond, which was characteristic of alcohols and phenols. The LKNS and LKN samples showed an additional peak at 1633 cm –1 , attributed to the stretching vibration of the C–N bond, , proving the successful nitrogen doping. Another unique peak at 841 cm –1 appeared in LKNS and LKS, which was attributed to the stretching vibration of the S–O bond.…”

“…This provided evidence of the oxidation−reduction reaction of the oxygen element, which contributed to the pseudocapacitance observed in the electrode material. The C−N 45 bond at 1632 cm −1 became weaker at 1.2 V and then increased again, which suggests that the C−N bond turned to a C�N bond, which was then further transformed back to C−N bond at higher voltages. During this study, a change was observed in the S−O bond peak located at 853 cm −1 .…”

High-Density Single-Atomic Mn–N–C Site in Hierarchical Porous Biochar for Superoxide Radical-Dominated Ozonation

“…3 Carbon-based catalysts, such as graphene, carbon nanotubes, and fullerene could be used as catalysts to activate O 3 through non-radical or radical processes. 4,5 The reactive oxidation species (ROSs) mainly include • OH and O 2…”

“…As an environment-friendly and promising advanced oxidation technology, ozonation is widely used for industrial wastewater treatment. , Ozone (O 3 ) without catalysts cannot obtain deep mineralization degree because of its weak oxidation ability ( E 0 = ∼2.05 V) . Carbon-based catalysts, such as graphene, carbon nanotubes, and fullerene could be used as catalysts to activate O 3 through non-radical or radical processes. , The reactive oxidation species (ROSs) mainly include · OH and O 2 · – , while non-radical processes include 1 O 2 and direct electron transfer oxidation (DET). All of these ROSs can be used to degrade organic pollutants effectively; however, the oxidation of carbon frames leads to its poor stability and limited application scenarios. , Transition metal oxides (FeO, Fe 3 O 4 , Co 3 O 4 , CuO, etc.)…”