Synthesis of nitrogen and phosphorus co-doped graphene as efficient electrocatalyst for oxygen reduction reaction under strong alkaline media in advanced chlor-alkali cell

Role of Noncovalent Interactions in N,P-Functionalized Luminescent Carbon Dots for Ultrasensitive Detection of Moisture in D2O: Boosting Visible-NIR Light Sensitivity

“…The peak at 284.6 eV corresponds to the CC/C–C bonds and the peak at 285.3 eV can be correlated with C–C/C–N/C–P bonds, while the peaks at 286.6 and 289.3 eV can be attributed to the presence of C–O/CN/CP and CO/O–CO, respectively. The deconvoluted O 1S spectra (depicted in Figure b) comprise two peaks at 531.8 and 533.3 eV, which indicate the presence of C–O/O–(N/P) and CO/PO groups, respectively. , The deconvoluted XPS spectra of N 1S (Figure c) show the appearance of four different characteristic nitrogen functionalities: intense graphitic nitrogen at 402.1 eV, pyrrolic nitrogen at 400.7 eV, amino nitrogen at 399.6 eV, and a very small extent of pyridinic nitrogen at 398.4 eV. − Furthermore, the deconvoluted XPS spectra of P 2P (Figure d) consist of two peaks at 134.4 and 135 eV, which correspond to the P–C and PO bonds, respectively. − In addition, the FTIR spectra (Figure S3) at the longer wavenumber region show a broad and intense peak at around 3032–3674 cm –1 , which can be attributed to the combined stretching vibration of the −NH/–OH functional groups on the surface. The low intense peaks in the region of 2800–2940 cm –1 correspond to the C–H stretching vibration.…”

Electrochemical Degradation of Synthetic Textile Wastewater by C/MnO2 Electrode Assessed by Surface Response Methodology

“…The disorder and defect in the graphitic structure are related by the D band. The latter peak is the 2D band, which is also attributed to the sp 2 -bonded carbon atoms in a two-dimensional lattice and connotes that the graphite sheet contains some layers (37). In the spectrum of manganese oxide coated on graphite, the same peaks are observed that are present in the Raman spectrum of graphite materials.…”

Tunable multi-doped carbon nanofiber air cathodes based on a poly(ionic liquid) for sodium oxygen batteries with diglyme/ionic liquid-based hybrid electrolytes

“…36,37 It enables an increase in porosity which is critical to absorb the intermediates generated during the ORR. 36 In fact, sulfur/nitrogen, 38,39 phosphorus/nitrogen, 40 and boron/nitrogen 41 co-doping of carbons resulted in higher electrocatalytic activity than nitrogen mono-doped carbon. 36,37 As reported by Zheng et al, N, P and F tri-doped carbon nanospheres (NPF-CNS) exhibited superior ORR/OER electrocatalytic activities with lower overpotential (0.76 V) and outstanding long-term durability in Zn-O 2 batteries, in comparison with N,P co-doped carbon (0.92 V).…”