Nitrogen–phosphorus doped graphitic nano onion-like structures: experimental and theoretical studies

Abstract

Nitrogen–phosphorus doped graphitic nano onion-like structures.

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.…”

Unveiling the role of a ground state charge transfer complex in carbon nanoparticles for highly efficient metal-free solar hydrogen production

“…S3 and S4(a) †) in the interior of highly graphitized sp 2 -p domains. 33 Meanwhile the surface states of the N, P-CNPs primarily consist (Fig. S3 and S4(b) †) of oxygenated phosphorus or phosphates, accompanied by the existence of a small number of pyrrolic/amine-based functional groups.…”

Design and synthesis of hydrophobic mixed organogels with complementary hydrogen-bond donor–acceptor sites: removal of heavy metal ions Hg2+, Cd2+ and Pb2+ from aqueous solution

“…The O1s spectrum shows the peaks at 530.9, 531.5, and 532.9 eV for the –C–OH, –CO, and –COOH groups, respectively. 66–71 The XPS analysis of G8GE , mtG8GE , and mrG8GE is outlined in Fig. S43–S45 and Table S7 (ESI†).…”