A g-C3N4–CdS composite catalyst with high visible-light-driven catalytic activity and photostability for methylene blue degradation

In-situ synthesis of CdS/g-C3N4 hybrid nanocomposites with enhanced visible photocatalytic activity

“…No other impure peaks were observed, which suggests a two-phase composition of g-C 3 N 4 and CdS in these composites. The two peaks of 13.1°and 27.77°gradually decreased in intensity when CdS was introduced, which is similar to the report of Fu Jie [26]. The XRD pattern of 1:4 CdS/g-C 3 N 4 composites revealed distinct reflections at 24.925°, 26.450°, 28.217°, 36.424°, and 43.858°that corresponded to the (100), (002), (101), (102), and (110) planes of CdS, respectively.…”

“…The broad bands at approximately 3000 cm -1 corresponded to the stretching mode of the terminal NH 2 or NH groups at the defect sites of the aromatic ring [38]. The bands at 1533, 1457, 1129, and 711 cm -1 were attributed to the Cd-S bond [26,29]. The FT-IR spectrum further confirmed the formation of composites that contained the two phases of CdS and g-C 3 N 4 .…”

“…The pure g-C 3 N 4 solution and CdS solution was fully faded at 25 min and 60 min, respectively, but the suspension was fully faded at 15 min when the CdS/g-C 3 N 4 hybrid nanocomposites were under light irradiation. To quantitatively investigate the reaction kinetics of the MB photocatalytic degradation, the photocatalytic data are analyzed using pseudo-first-order kinetics [26], which can be described as follows:…”

“…Cao et al reported an in situ growth CdS/g-C 3 N 4 composites using a solvothermal method, the combination of as-prepared g-C 3 N 4 and Cd resource in dimethyl sulfoxide as the S resource solution [25]. Fu et al prepared CdS/g-C 3 N 4 composites through an in situ precipitation-deposition method; the composites of the Cd and S resources were first prepared then combined with as-prepared g-C 3 N 4 [26]. Jiang et al fabricated g-C 3 N 4 -CdS composite through a precipitation method; the as-prepared g-C 3 N 4 was first combined with the Cd resource and then combined with the S resource [22].…”

Melamine modified P25 with heating method and enhanced the photocatalytic activity on degradation of ciprofloxacin

“…For instance, SiO 2 /g-C 3 N 4 [17], Ag-AgBr/g-C 3 N 4 [18], g-C 3 N 4 /BiOCl [19,20], g-C 3 N 4 /ZnO [21], A g-C 3 N 4 -CdS [22], g-C 3 N 4 -TiO 2 [23][24][25], g-C 3 N 4 /Bi 2 WO 6 [26], g-C 3 N 4 -Co 3 O 4 [27], g-C 3 N 4 -Ag 3 PO 4 [28], N TiO 2 /g C 3 N 4 [29], Al 2 O 3 /g-C 3 N 4 [30], et al All these researches of g-C 3 N 4 sensitive or modified or composited or heterojunction could give the positive results in photocatalysis, it was also identified that the g-C 3 N 4 as the organic photocatalytic material could effectively enhance the photocatalytic activity of photocatalysts. However, among the compounded types, maybe due to the better properties of TiO 2 , the g-C 3 N 4 -TiO 2 was widely investigated.…”