Synthesis of few-layer MoS₂ nanosheet-loaded Ag₃PO₄ for enhanced photocatalytic activity

Abstract

Novel few-layer MoS2/Ag3PO4 composites were fabricated. The results indicated that Ag3PO4 nanoparticles were directly formed on the surface of few-layer MoS2. The physical and chemical properties of the few-layer MoS2/Ag3PO4 composite photocatalysts were tested in order to investigate the effects of few-layer MoS2 on the photocatalytic activity of Ag3PO4. The photocatalytic activity of the few-layer MoS2/Ag3PO4 composites was evaluated by the photocatalytic degradation of Rhodamine B (RhB) and bisphenol A (BPA) under visible light irradiation. The photocatalytic activity of the few-layer MoS2/Ag3PO4 composites was higher than that of pure Ag3PO4. The optimal few-layer MoS2 content for the organic pollutant degradation of the heterojunction structures was determined. The synergic effect between few-layer MoS2 and Ag3PO4 was found to lead to an improved photogenerated carrier separation. The stability and the possible photocatalytic mechanism of the composites were also discussed.

Construction of a 2D Graphene‐Like MoS2/C3N4 Heterojunction with Enhanced Visible‐Light Photocatalytic Activity and Photoelectrochemical Activity

“…Firstly,alarge amount of GL-MoS 2 may cover some of the active sites on the surface of the catalyst, thus hindering effective electron transfer from GL-C 3 N 4 .S econd, the visible-light absorption ability of GL-MoS 2 is so strongt hat it might suppress the absorption ability of GL-C 3 N 4 to the detrimento f the photocatalytic degradation efficiency towards organic dyes. [35][36][37] In this scenario, althought he addition of GL-MoS 2 facilitates electron transfer,t he total amount of separated electrons from GL-C 3 N 4 would be suppressed.…”

“…This implies the formation of an interfacial junctionand asynergistic effect. [35][36][37] Furthermore, MoS 2 also shows good lattice matching with GL-C 3 N 4 , [38] which could enhance light harvesting, accelerate the formation of intimate interface contact, and promote photogenerated charges eparationa cross the interfaces. [39] In this work, layered semiconductor GL-MoS 2 has been used in combination with GL-C 3 N 4 to obtain improved photocatalytic activity.T his2 Dm aterial has been used as as ubstitute for noble metalsi ns ynthesizing photocatalysts.…”

“…It has al arge specific surface area, which ensures fast transport of electrons.F or this reason, few-layer MoS 2 has excellent potential applications in nanoelectronics, optoelectronics, supercapacitors, and sensors. Moreover,i th as also received ag reat deal of attention asaco-catalyst in the photocatalytic degradation of pollutants (MoS 2 /Bi 2 MoO 6 , [35] MoS 2 /BiOBr, [36] and MoS 2 / Ag 3 PO 4 [37] ). From theses tudies, it is evident that the introduction of MoS 2 is beneficial forl ight harvesting, electron transfer at interfaces, andc harges eparation in composite materials.…”

g-C3N4/Ag3PO4 composites with synergistic effect for increased photocatalytic activity under the visible light irradiation

“…These disadvantages have influence on its practical application, including cyclicity and long-term storage. Therefore, many composite photocatalysts have been developed to improve the activity and stability of Ag 3 PO 4 , such as Ag 3 PO 4 /Cr-SrTiO 3 [14], BN/ Ag 3 PO 4 [15], Ag 3 PO 4 /In(OH) 3 [16], MoS 2 /Ag 3 PO 4 [17] and CNT/ Ag 3 PO 4 [18].…”

Facile synthesis of porous Ag3PO4 particles and its application in MB wastewater degradation under visible light irradiation

“…47.79°, 52.70°, 55.02°, 57.28°, 61.64° and 71.90°, which were indexed to the (110), (200), (210), (211), (310), (222), (320), (321), (400) and (421) planes of Ag3PO4, respectively [9]. It can be seen that PS/Ag3PO4 composite exhibit similar XRD patterns to porous Ag3PO4.…”