Engineering 2D heterostructured VS2-rGO-Ni nanointerface to stimulate electrocatalytic water splitting and supercapacitor applications

Modulating the electronic structure of VS2via Ru decoration for an efficient pH-universal electrocatalytic hydrogen evolution reaction

“…1b) reveal that the prominent peak located at 517.1 and 524.5 eV can be respectively assigned to V 2p 3/2 and V 2p 1/2 , demonstrating that the oxidation state of vanadium in VS 2 is V 4+ . 17 Besides, the two peaks at 514.9 and 522.4 eV belong to V 2+ 2p 3/2 and V 2+ 2p 1/2 , respectively. The presence of V 2+ can be ascribed to the strong reduction charac-teristics of S 2− produced by the decomposition of superfluous CH 3 CSNH 2 in the procedure of hydrothermal treatment.…”

“…As a typical transition metal dichalcogenide, vanadium disulfide (VS 2 ) consists of sandwich-like S-V-S layers formed by weak van der Waals interactions with an interlayer spacing of 5.76 Å. 17 The intrinsic metallic properties of VS 2 are beneficial for fast electron transport and the basal-plane active sulfur sites enhance the concentration of exposed active sites, both of which are conducive to constructing an efficient electrocatalyst. 18,19 However, VS 2 showed unsatisfactory catalytic activity towards the HER in practical application.…”

Interfacial Interaction in NiFe LDH/NiS2/VS2 for Enhanced Electrocatalytic Water Splitting

“…Non-noble transition metal sulfides (TMSs) have presented themselves as appealing catalysts for both HER and OER on the basis of their favorable electrocatalytic activity and electrical conductivity [ 12 , 13 ]. Recently, vanadium disulfide (VS 2 ) has attracted considerable attention as a candidate electrocatalyst, owing to its intrinsic catalytic properties, which exhibit weak van der Waals interlayer interactions and an interlayer spacing of 5.76 Å [ 14 ]. In particular, benefiting from its metallic conductivity and electrocatalytic active sites both on the surface and at the active edge, the 1T phase VS 2 has been widely employed as an electrocatalyst for HER and OER [ 15 ].…”

Development and characterization of self-powered, highly sensitive optoelectronic device based on PVA-rGO nanofibers/n-Si

“…Furthermore, although graphene has a zero-band gap, its density of states near the Dirac point indicates that composite structures of graphene with photoactive materials are a potential material for high-performance optical devices. These interesting properties of reduced graphene make it very important for applications such as gas sensors [21], photocatalysis [22], photodetectors [10] and supercapacitors [23] in heterojunction form. There have been numerous realizations using graphene, GO or RGO as the active photoactive layer in photodetectors [24][25][26][27][28].…”