Construction of Heterostructure Based on Hierarchical Bi2MoO6 and G-C3N4 with Ease for Impressive Performance in Photoelectrocatalytic Water Splitting and Supercapacitor
Here, we report the nanohybrid material with hierarchical Bi2MoO6 and g-C3N4 via solvothermal method. Its shows impressive performance towards photoelectrocatalytic water splitting and supercapacitor applications, due to formation of Type-II heterostructure, higher surface area 60.7 m2g-1 (Bi2MoO6 - 44.0 m2g-1) and higher wettability. The formation of Type-II heterostructure reduces the electron-hole recombination and boost up the interfacial charge transfer in g-C3N4/Bi2MoO6, the nanohybrid material (10 wt.% g-C3N4) shows higher PEC efficiency, which is about 7 and 20-fold higher than Bi2MoO6 and g-C3N4 under illumination (100 mW cm-2 (AM 1.5G)). Besides, due to the combination of non-faradaic and faradaic processes in the g-C3N4/Bi2MoO6 (5 wt.% g-C3N4) exhibits the high specific capacity of 1628 C g-1 at a current density of 2 A g-1 in three-electrode configuration. The symmetric supercapacitor delivers a maximum cell voltage of 1.8 V with high energy density and power density of 47 Wh kg-1 and 4500 W kg-1 and also shows excellent electrochemical stability with 90 % capacitance retention even after 10,000 cycles at a current density of 5 A g-1.