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Controllable Synthesis of Flower-Like MoS₂ and Its Quick Photodegradation of Methylene Blue Under Visible Irradiation
Zhen-Zhao Pei1, Ya-Bao Liu1, Heng Jia1
1School of Materials Science and Engineering, Hebei University of Engineering, Handan 056038, P. R. China.
Abstract:
Molybdenum disulfide (MoS₂) was synthesized via hydrothermal process under the assistance of citric acid, which exhibited high photocatalytic property in the application of methylene blue (MB) degradation. The flower ball microstructure of MoS₂ changed with different amounts of citric acid. X-ray diffraction (XRD), Scanning electron microscope (SEM), UV-Vis diffuse reflectance spectra have been employed to characterize the samples. It improved the photocatalytic efficiency nearly 19.77% compared to MoS₂ without citric acid. When H₂O₂ was added, the synergistic effect of MoS₂ and hydrogen peroxide (H₂O₂) was observed in photocatalytic reaction system, which degraded MB completely within 40 min under visible light irradiation.
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