Studies into the Synergy Between MoS2-rGO-gC3N4 for Photocatalytic and Supercapacitor Applications

• Published in: Journal of electronic materials 2024-09, Vol.53 (9), p.5286-5297
• Main Authors: Neha, Andola, Anshu, Pandey, Ravi R., Pandey, Rakesh K., Rambabu, P., Das, Pradip, Rabani, Iqra, Turpu, G. R.
• Format: Article
• Language: English
• Subjects: Carbon nitride; Characterization and Evaluation of Materials; Chemistry and Materials Science; Dyes; Electronics and Microelectronics; Energy gap; Graphene; Instrumentation; Materials Science; Methylene blue; Molybdenum disulfide; Nanocomposites; Optical and Electronic Materials; Original Research Article; Photocatalysis; Photodegradation; Rhodamine; Solid State Physics
• ISSN: 0361-5235; 1543-186X
• DOI: 10.1007/s11664-024-11258-8

Flower-like MoS 2 and its composites with reduced graphene oxide (rGO) and graphitic carbon nitride (gC 3 N 4 ) were prepared to study their suitability in environmental and energy applications. The materials were well characterized by standard techniques. Optical band gaps of all the materials were in the visible region, making them suitable for visible-light photocatalysis applications. The photocatalytic studies have demonstrated that rGO-MoS 2 exhibits a much better photodegradation performance than other materials in the study towards methylene blue (MB) and rhodamine B (RhB) dye degradation. The degradation efficiencies of rGO-MoS 2 were found to be 83% in 105 min for MB dye and 82% in just 30 min for RhB dye. Two-dimensional rGO sheets greatly improved the photocatalytic performance of the rGO-MoS 2 nanocomposite due to the reduction in the electron–hole recombination rate. Electrochemical studies on the samples showed superior performance for rGO-MoS 2 with the specific capacitance of 152 F/g at 35 mA/cm 2 , having an energy density of 5.3 Wh/kg at a power density of 337 W/kg.