Ultrathin g-C₃N₄ nanosheets with an extended visible-light-responsive range for significant enhancement of photocatalysis

Abstract

Ultrathin graphitic carbon nitride (UGCN) nanosheets with an extended region of visible light response and enhanced surface area were constructed for a significant enhancement in photocatalysis.

In situ structural modification of graphitic carbon nitride by alkali halides and influence on photocatalytic activity

“…10 However, graphitic carbon nitride usually encounters problems such as high recombination rate of photogenerated charge carriers and a low amount of surface active sites, and thus has limited photocatalytic efficiency. To address this issue, different strategies have been proposed including doping, [11][12][13] manipulating microstructure and morphology, [14][15][16][17][18][19] coupling with other semiconductors and noble metals 8,[20][21][22][23][24] and isotype g-C 3 N 4 /g-C 3 N 4 junctions. 17 Considering its unique structure, post-growth thermal treatment is frequently used to modify the structural and photocatalytic properties of g-C 3 N 4 .…”

“…17 Considering its unique structure, post-growth thermal treatment is frequently used to modify the structural and photocatalytic properties of g-C 3 N 4 . 15,16,25 For instance, porous structures 26 and nanosheets 15,16,25 with different surface functional groups have been prepared by thermal exfoliating bulk g-C 3 N 4 in different atmosphere (e.g. air, NH 3 , and oxygen gas).…”

Highly Efficient g‐C3N4 Nanorods with Dual Active Sites as an Electrocatalyst for the Oxygen Evolution Reaction

“…These two additional peaks centered at 290,27 and 293.04 eV are attributed to O=CÀ O [43] and COOH [33] indicating the adsorption of O and OH ions on C during oxygen evolution reaction. The high resolution N1s spectra revealed only one peak centered at 395.06 eV (Figure 7c) which is assigned to C=N in an aromatic ring (pyridinic nitrogen) [44] this can be possibly due to the substitution of C atom in the adjacent hexagonal ring by O from the oxidized pyridinic nitrogen, [45] while the O1s spectra ( Figure 7d) showed an increase in the intensity of the peak centered at 528.87 eV which is assigned to O=CÀ OH group showing the adsorption of reaction intermediates. The peak at 530.65 eV assigned to O=N showed a significant decrease in intensity.…”

Scalable nanohybrids of graphitic carbon nitride and layered NiCo hydroxide for high supercapacitive performance

“…g-C 3 N 4 was fabricated by the simple pyrolysis of urea. 20 The urea precursor (5 g) was kept in an alumina crucible with a cover. The crucible was heated for 2 h at 80 C to remove moisture and obtain an oxygen-free product.…”