Fabrication of Carbon‐Based ZnBi2S4 and ZnBi2Se4 Nanocomposites for Photocatalytic and Electrochemical Applications

Abstract

AbstractMetal chalcogenide nanoparticles are widely used to degrade environmental pollutants. Zinc‐Bismuth Chalcogenide/Carbon (ZnBi2S4/Carbon and ZnBi2Se4/Carbon) nanocomposites were synthesized and the surface was covered with sucrose before carbonization to yield carbon nanocomposites. The solar irradiation is used to convert sucrose into carbon nanocomposites. The as‐synthesized nanocomposites were well characterized in detail in terms of their structural, morphological, functional, and optical properties. Nanocomposites are well‐known and frequently show excellent characteristics in all domains, including photocatalysis and electrochemical applications. The superior electron transfer capability, improved light harvesting, and increased catalytic active sites were said to play a crucial role in the bandgap contribution to the improved photocatalytic activity. The degradation of dyes like Methylene Blue (MB), Methyl Orange (MO), and Rhodamine B (RhB) in solution under sunlight irradiation was used to investigate the photocatalytic activities of the nanocomposites. Pseudo‐first‐order kinetic theory was followed. Specific capacitances of nanocomposites are 659.479 F/g and 871.198 F/g at 25 mV/s for ZnBi2S4/Carbon and ZnBi2Se4/Carbon nanocomposites, respectively.