Abstract
Developing simple and effective synthetic strategies regarding the formation of heterostructure photocatalytic semiconductors remains an intense challenge in research matters. Uniform heterostructure cobalt oxide@meso–CN@MoS2 (CoO@meso–CN@MoS2) photocatalyst exhibits excellent photocatalytic redox performance for pollutant degradation under visible light. By adjusting the weight ratio of CoO@meso–CN and MoS2, we fabricated a CoO@meso–CN@MoS2 heterostructure photocatalyst, and the established heterostructure between CoO@meso–CN and MoS2 was indicated by various physicochemical and morphological characterizations. The photocatalytic response to the fabricated hybrid was determined by rodamine B (RhB), methylene blue (MB), and congo red (CR) degradation in aqueous solution under visible light, and the nanocomposites with a slight content consisting of CoO@meso–CN achieved better catalysis than pure MoS2. This finding confirmed the propriety of this heterostructure as a valuable photocatalyst. The experimental results demonstrated that the apparent reaction rate constant of the 3 wt% CoO@meso–CN modified MoS2 was about two times higher than that of pure MoS2. The present work serves as a new approach for designing highly efficient visible light-induced heterostructure-based photocatalysts for environmental applications in the future.
Highlights
Contaminations of water systems with organic compounds is a significant source of environmental pollution
The photocatalytic action of the nanocomposites has been explored to understand the degradation of organic chemicals using visible light for essential energy
The result is further achieved by X-ray diffraction (XRD) analysis of CoO@meso–CN@MoS2 nanohybrid before and after the photocatalytic degradation pathway of Rhodamine B (RhB)
Summary
Contaminations of water systems with organic compounds is a significant source of environmental pollution. Heterogeneous photocatalysis has been confirmed as effective for degrading both water and air organic contaminants [10] and the part of degradation of organic pollutants in aqueous solutions to the MoS2 heterostructure [11] These results established that the existence of MoS2 shows outstanding efficiency for improvement of light harvesting, electron drift from interfaces, and charge separation in the heterogeneous. Among those systems, hydrothermal processes are preferable due to the fact of their easy employment, flexible synthetic conditions, profitable and environmental practicability, etc. An accessible pathway was provided for the efficient synthesis of heterostructure CoO@meso–CN@MoS2 photocatalysts hydrothermally for their employment in the visible-light photocatalytic degradation of organic contaminants. This work is effective and promotes innovative visible-light sensitive photocatalysts for inexpensive, high performance, and great cycling stability
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