UV-Vis-NIR full-range-responsive carbon-rich carbon nitride nanotubes for enhanced photocatalytic performance

Abstract

As a star photocatalyst, graphitic carbon nitride has been widely used in environmental remediation and energy conversion. However, graphitic carbon nitride still has some distinct shortcomings, such its utilization of...

Polymeric Carbon Nitride with Chirality Inherited from Supramolecular Assemblies

“…The C 1s XPS spectra of MLTA 350 are deconvoluted into four peaks centered around 284.8, 286.4, 287.9, and 288.9 eV, assigned to graphite carbon atoms (CÀ C), carbon linked to edge amino groups (CÀ NH 2 ), sp 2 coordinating carbon in the CN framework (C=NÀ C), and oxidized carbon of unreacted chiral CÀ OH centers or carboxylic groups of L-TA, respectively (Figure S12a). [55] Notably, the C=NÀ C and CÀ NH 2 contributions were shifted to lower binding energies in the deeper levels, implying that the nitrogen atoms in C=NÀ C and CÀ NH 2 groups within melamine are primarily condensed with the oxygen atoms in the COOH group of L-TA, resulting in an increased amount of CÀ NÀ O x species, which agrees with the hypothesized reaction mechanism. [56] The N 1s spectrum of MLTA 350 indicates the formation of C=NÀ C, NÀ (C) 3 , and NÀ H species by the peaks centered at 398.6, 399.4, and 400.4 eV, respectively (Figure S12b).…”

“…To study this inversion in heat response between the D‐TA or L‐TA enantiomer on chiral MLTA 350 with increasing probe molecule concentrations, the chemical environments of C and N were investigated by X‐ray photoelectron spectroscopy (XPS) depth profile measurements. The C 1s XPS spectra of MLTA 350 are deconvoluted into four peaks centered around 284.8, 286.4, 287.9, and 288.9 eV, assigned to graphite carbon atoms (C−C), carbon linked to edge amino groups (C−NH 2 ), sp 2 coordinating carbon in the CN framework (C=N−C), and oxidized carbon of unreacted chiral C−OH centers or carboxylic groups of L‐TA, respectively (Figure S12a) [55] . Notably, the C=N−C and C−NH 2 contributions were shifted to lower binding energies in the deeper levels, implying that the nitrogen atoms in C=N−C and C−NH 2 groups within melamine are primarily condensed with the oxygen atoms in the COOH group of L‐TA, resulting in an increased amount of C−N−O x species, which agrees with the hypothesized reaction mechanism [56]…”

Enhanced visible-light-driven RhB removal with a Mo–Ni bimetallic sulfide/g-C3N4 nanosheet Schottky junction

“…[1][2][3] Notably, g-C 3 N 4 is set apart from various VLD photocatalysts owing to its low cost, high chemical stability, and suitable potential structure. [4][5][6] Unfortunately, bulk g-C 3 N 4 usually suffers problems of insufficient active sites and a high recombination rate of photogenerated electron-hole pairs, which greatly limits its development and practical application. [7][8][9] The construction of a heterojunction has been proved to be an effective strategy to improve the efficiency of charge separation, and great progress has been made in water splitting and pollutant degradation.…”