Construction of heterostructure based on hierarchical Bi₂MoO₆ and g-C₃N₄ with ease for impressive performance in photoelectrocatalytic water splitting and supercapacitor

Abstract

This work demonstrates the formation of g-C3N4/Bi2MoO6 heterostructure for water splitting and supercapacitor; which shows highest PEC efficiency and symmetric device delivered a energy density and power density of 47 W h kg−1 and 4.5 kW kg−1.

MoN Nanorod/Sulfur-Doped Graphitic Carbon Nitride for Electrochemical Determination of Chloramphenicol

“…Several carbon-based materials such as graphene oxide (GO), carbon nanofibers (CNFs), carbon nanotubes (CNTs), ordered mesoporous carbon (OMC), and graphitic carbon nitride (GCN) have been used for electrochemical sensors. Among them, GCN received a lot of attention due to its unique structural characteristics, large surface area, high electrical conductivity, high mechanical strength, and chemical stability. − In addition, many researchers have reported that heteroatom (S, N, P) doping in the GCN framework is an excellent strategy for improving its activity more effectively for various electrochemical applications, including sensing, photocatalytic degradation, and water catalysis. − Through this, MoN’s stability and electrical conductivity can be enhanced by forming a composite material with heteroatom-doped GCN. − As a result, the combination of MoN and heteroatom-doped GCN is expected to significantly enhance the activity of the electrochemical sensor.…”

High-Performance High-Voltage Symmetric Supercapattery Based on a Graphitic Carbon Nitride/Bismuth Vanadate Nanocomposite

“…On the other side, two oxidation peaks were obtained at −0.42 and −0.23 V (vs Hg/HgO), which are assigned to the oxidation of Bi 0 → Bi + and Bi + → Bi 3+ , respectively. 26 Also, the CV profile of bare gCN is shown in Figure S1, which is exhibited an ideal symmetric rectangular shape due to the contribution of the EDLC (capacitive) nature of gCN nanosheets. For all of the gCN/BVO nanocomposite materials, the area of the CV profile increases while increasing the gCN content.…”

“…This combined system, often called as "supercapattery", may be an asymmetric cell with capacitive and battery electrode 16−20 or composite electrodes that show both capacitive and battery behaviors. 21−25 Recently, bimetal oxides of transition metals such as NiMoO 4 , 19 ZnCo 2 O 4 , 22 Bi 2 MoO 6 , 26 NiCo 2 S 4 , 12 etc. have received significant attention in battery-type electrode materials due to their superior electrochemical performance.…”

“…The high nitrogen content in g-C 3 N 4 contributes more to faradic reactions by providing active sites and also enhances surface polarity, improves wettability of the electrode, and consequently improves the mass transfer performance. 26 Indeed, g-C 3 N 4 with an inherent low electronic conductivity is still considered as a promising replacement of carbon nanotubes, graphene, and graphene oxide for the formation of composite electrode materials for high-performance SCs because of its 2D structure, simple preparation, and very low cost. For example, sandwich-like MnO 2 /g-C 3 N 4 nanocomposite materials were used as an electrode in supercapacitor and exhibited a good specific capacitance of 211 F/g at a current density of 1 A/g compared with their individual components.…”

Composite of Cobalt‐C3N4 on TiO2 Nanorod Arrays as Co‐catalyst for Enhanced Photoelectrochemical Water Splitting

“…[14] Different from other N/C materials, g-C 3 N 4 typically contain complex nitrogen species to provide uniform and abundant nitrogen ligands, providing more metal coordination sites for catalysts, and may also be used as reactive sites for photoelectrocatalysis. [15] In addition, with an optical bandgap of 2.70 eV, g-C 3 N 4 responds to visible light up to 460 nm, which can broaden the absorption range of TiO 2 based device. Nevertheless, as same as pristine TiO 2 , pure g-C 3 N 4 is limited largely due to the low quantum efficiency, and high electron hole recombination rate.…”