Synthesis and photocatalytic activity of mesoporous g-C ₃ N ₄ /MoS ₂ hybrid catalysts

Abstract

The key to solving environmental and energy issues through photocatalytic technology requires highly efficient, stable and eco-friendly photocatalysts. Graphitic carbon nitride (g-C3N4) is one of the most promising candidates except for its limited photoactivity. In this work, a facile and scalable one-step method is developed to fabricate an efficient heterostructural g-C3N4 photocatalyst in situ coupled with MoS2. The strong coupling effect between the MoS2 nanosheets and g-C3N4 scaffold, numerous mesopores and enlarged specific surface area helped form an effective heterojunction. As such, the photocatalytic activity of the g-C3N4/MoS2 is more than three times higher than that of the pure g-C3N4 in the degradation of RhB under visible light irradiation. Improvement of g-C3N4/MoS2 photocatalytic performance is mainly ascribed to the effective suppression of the recombination of charge carriers.

LDH Ternary Nanocomposites: g-C3N4 Intercalated ZnO\Mg-Al for Superior Photocatalytic Activity towards Dye Degradation

“…The XRD pattern of the Mg-Al LDH and g-C 3 N 4 , sample is in good agreement with the JCPDS card no: 35-0965 [37] and 87-1526 [38], respectively. The diffraction peaks indexed to (003), (006), (012), (015), (018), and (110) are the plane reflections of a typical hydrotalcite-like phase screening, sharp and symmetric basal (00 l) reflection of LDH.…”

Graphitic Carbon Nitride (C3N4) Reduces Cadmium and Arsenic Phytotoxicity and Accumulation in Rice (Oryza sativa L.)

“…Graphitic carbon nitride nanosheets (C 3 N 4 ) were synthesized with urea (20 g) in a vacuum tube furnace. The ramping rate was 5 °C/min, and the temperature was kept at 550 °C under nitrogen flow for 4 h [ 47 ]. The synthesized C 3 N 4 was cooled down to ambient temperature in the vacuum tube furnace and then washed with deionized water three times.…”

Coatings of magnetic composites of iron oxide and carbon nitride for photocatalytic water purification

“…12,[25][26][27] Selected examples for CN composites comprise MoS 2 /C 3 N 4 , Bi 2 WO 6 /C 3 N 4 , Ag/C 3 N 4 , Fe 3 O 4 /C 3 N 4 and a-Fe 2 O 3 /C 3 N 4 . 12,15,22,28,29 However, these investigations are based on dispersions of particles, and their use requires an additional costly process step for particle separation in any technologically relevant approach. Although, dispersions show generally signicant higher activities than immobilized particles, it is essential to establish photocatalytic processes using immobilized photocatalysts.…”