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Construction of Heterostructure Based on Hierarchical Bi2MoO6 and G-C3N4 with Ease for Impressive Performance in Photoelectrocatalytic Water Splitting and Supercapacitor

Abstract

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.

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Supplementary files

Article information


Submitted
02 Feb 2020
Accepted
18 Mar 2020
First published
18 Mar 2020

Catal. Sci. Technol., 2020, Accepted Manuscript
Article type
Paper

Construction of Heterostructure Based on Hierarchical Bi2MoO6 and G-C3N4 with Ease for Impressive Performance in Photoelectrocatalytic Water Splitting and Supercapacitor

C. Murugan, K. M, S. Marappan and A. Pandikumar, Catal. Sci. Technol., 2020, Accepted Manuscript , DOI: 10.1039/D0CY00211A

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