Modulation of ferromagnetism and transport in BxCyNz thin films via nitrogen doping and defects

Ordered Mesoporous Boron Carbon Nitrides with Tunable Mesopore Nanoarchitectonics for Energy Storage and CO2 Adsorption Properties

“…The intensity ratio of I D / I G also increases from 1.01 to 1.04, increasing the amount of B and N in the samples, confirming a higher ratio of carbon defects in MBCN4. [ 19 ] Two small peaks at 2700 and 2900 cm −1 corresponding to the weak 2D‐ and D + G‐bands also suggest the existence of defects generated from the incorporation of B and N in the carbon framework.…”

“…[ 19 ] In the carbon K‐edge spectrum, two sharp peaks at 285.6 and 288.3 eV correspond to the 1s → π * transition, contributed from the graphitic, CB bonds, and pyridinic nitrogen as in the CN framework. [ 19 ] The broad peak at 292.6 eV matches the σ * transition composed of the CC, CB, and pyridinic CN bonds. The bonds CB and pyridinic CN contribution seem to increase with the increase in the concentration of B and N in the samples, and the same feature has been observed from the XPS data of C 1s spectra.…”

“…The two broad peaks at 397.7 and 400.9 eV in nitrogen K‐edge arise from the two unfilled π * orbitals of pyridine and the broad peak centered at 407 eV is also assigned to the π * transition similar to pyridine and triazine. [ 19,22 ]…”

“…The two broad peaks at 397.7 and 400.9 eV in nitrogen K-edge arise from the two unfilled 𝜋* orbitals of pyridine and the broad peak centered at 407 eV is also assigned to the 𝜋* transition similar to pyridine and triazine. [19,22] MBCN samples were used to make electrodes for supercapacitors and sodium-ion batteries to understand the energy storage performance. The supercapacitive properties were studied in a three-electrode configuration and alkaline electrolyte (6 m KOH) media.…”

“…N 1s spectrum of MBCN1 (Figure 3e) is deconvoluted into two contributions. The peak at 398.3 eV (39.6%) corresponds to the pyridinic nitrogen and NB bonds, [ 19,21 ] while the peak at 400.3 eV (60.4%) attributes to pyrrolic N. [ 19 ] It should be noted that the amount of pyrrolic N is decreased with the concomitant increase of NB as the content of the N is increased in the MBCN samples (Table S2, Supporting Information). The peak at 398.3 eV is slowly merged with the NB peak for MBCN3 and MBCN4.…”