Polycondensation of guanidine hydrochloride into a graphitic carbon nitride semiconductor with a large surface area as a visible light photocatalyst

Abstract

g-C3N4 prepared from guanidine hydrochloride exhibited a large surface area and a reduced recombination rate of electrons and holes, leading to improved photocatalytic activity for degrading RhB under visible light.

Mesoporous Phosphorus-Doped g-C3N4 Nanostructured Flowers with Superior Photocatalytic Hydrogen Evolution Performance

“…[21][22][23][24]39,40 Additionally, the additional weak diffractions situated at about 17.6 and 22.2° can be attributed to (600) and (650) planes of graphitic carbon nitride, respectively, which results from the denser packing or a distortion of the melon structure in which every second melon sheet is displaced. 41 Notably, the overall weakened intensity is examined for P-CN, indicating that doping P into the g-C 3 N 4 network can significantly reduce the correlation length of interlayer periodicity and particle size, correlating well with the TEM observation. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 …”

Enhanced visible-light photocatalytic activity and stability over g-C3N4/Ag2CO3 composites

“…It was reported that g-C 3 N 4 showed good photocatalytic performance for H 2 evolution via water splitting and degradation of organic pollutants [13][14][15][16][17][18][19][20][21]. However, its poor light absorption performance and easy recombination of electron-hole pairs limited the photocatalytic efficiency of g-C 3 N 4 .…”

Tetraethylorthosilicate induced preparation of mesoporous graphitic carbon nitride with improved visible light photocatalytic activity

“…For the purpose of taking full advantage of solar energy, a great number of semiconductor materials with visible light activities have been exploited [1][2][3]. As a typical metal-free polymeric semiconductor material, graphitic carbon nitride (g-C 3 N 4 ), has attracted great scientific interest due to its suitable band gap to absorb the visible light and unique properties, such as excellent performance of hydrogen production from water splitting and degradation of organic pollutants under visible light irradiation [4][5][6][7][8][9][10][11][12][13]. Unfortunately, the efficiency of bulk g-C 3 N 4 was still restricted due to the high recombination rate of photogenerated electron-hole pairs and low surface area (less than 10 m 2 g −1 ).…”