Graphitic carbon nitride nanosheets obtained by liquid stripping as efficient photocatalysts under visible light

Abstract

Well-scattered g-C3N4 nanosheets obtained using a liquid stripping possess much higher photocatalytic performance than bulk g-C3N4.

Photocatalytic Degradation of the Light Sensitive Organic Dyes: Methylene Blue and Rose Bengal by Using Urea Derived g-C3N4/ZnO Nanocomposites

“…The intensity of ZnO stretching vibration observed at 570 cm −1 are decreased in the order of Zn-U1 > Zn-U2 > Zn-U3 nanocomposite and almost disappear in the case of Zn-U3. The small peaks appearing at 275 cm −1 , 510 cm −1 , 645 cm −1 , 860 cm −1 , and 1157 cm −1 are characteristic of the g-C 3 N 4 and agreed well with the reported literature [38,[41][42][43]. Thus, the observed Raman scattering results confirmed that the synthesized sample is composed of g-C 3 N 4 and ZnO and match well with the XRD results.…”

Facile Synthesis of Pd Nanoparticles Incorporated into Ultrathin Crystalline g-C3N4 with Enhanced Photocatalytic Performance

“…When the Pd loading process was finished, the ultra-small Pd NPs were uniformly dispersed on the surface of ultrathin crystalline g-C 3 N 4 (Figure e). From the XRD pattern, it can be found that the intensity of the peak for ultrathin crystalline g-C 3 N 4 sharply decreased in comparison with that of bulk g-C 3 N 4 , owing to the successful exfoliation of bulk g-C 3 N 4 . − The Raman spectrum of ultrathin crystalline g-C 3 N 4 shifted to lower wavelength compared to the bulk sample (Figure b), further indicating the formation of an ultrathin nanosheet . The diffraction peaks of metallic Pd were at 39.5° (111), and 45.6° (002). , For the Pd/g-C 3 N 4 prepared in this work, the characteristic peaks of metal Pd were broadened (Figure a), which should be ascribed to the small size.…”

“…28−30 The Raman spectrum of ultrathin crystalline g-C 3 N 4 shifted to lower wavelength compared to the bulk sample (Figure 1b), further indicating the formation of an ultrathin nanosheet. 31 The diffraction peaks of metallic Pd were at 39.5°(111), and 45.6°( 002). 32,33 For the Pd/g-C 3 N 4 prepared in this work, the characteristic peaks of metal Pd were broadened (Figure 1a), which should be ascribed to the small size.…”

Highly sensitive and selective detection of melamine in dairy products by turn‐on fluorescence of ultrathin graphitic carbon nitride nanosheets

“…As shown in Figure 1b, the broad band from 3000 to 3500 cm −1 was attributed to primary (−NH) and secondary amines (−NH 2 ) from the hydrogenation of sp 2 ‐N. [ 33,34 ] There were five characteristic peaks at 1229, 1311, 1456, 1537 and 1627 cm −1 , all of which were attributed to the skeletal vibrations of the heptazine heterocyclic ring (C 6 N 7 ) units. The stretching vibration of the s ‐triazine ring (C 3 N 3 ) unit was located at 810 cm −1 .…”