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Synthesis of C/CdZnS nanocomposite with high photocatalytic activity for the degradation of Rhodamine B

Reaction Kinetics, Mechanisms and Catalysis, ISSN: 1878-5204, Vol: 135, Issue: 2, Page: 1099-1111
2022
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Herein, the C/CdZnS (C/CZS) photocatalysts with excellent photocatalytic performance were prepared using facile one-pot hydrothermal method. The crystal structure, morphology, photoelectric performance and photocatalytic activity of the samples were characterized by XRD, XPS, UV–Vis and electrochemistry. The catalytic degradation of pollutants under the irradiation of visible light was simulated using Rhodamine B (Rh B). The content of C was changed from 0.5 to 5 wt%, and the optimal value for the photocatalytic activity was determined to be 2 wt%. The apparent degradation rate and degradation efficiency of Rh B were 0.024 min and 97.5% within 140 min, which is 3.4 times that of pure CZS. C/CZS exhibited excellent catalytic performance, and its photocatalytic activity was sustained even after three cycles. Moreover, electrochemical test results demonstrated that the separation and transfer of photocarriers on CZS surface were effectively improved by C, thus enhancing its activity. In this study, we innovatively prepared a novel photocatalyst by combining fullerenes with sulfide solid solution for the first time, which has rarely been studied in the past. The synthetic method is simple, efficient and pollution-free. Subsequently, the catalytic degradation of Rh B experiment confirmed that the catalyst has high catalytic efficiency and stability. This experiment has practical significance not only for the catalytic degradation of Rh B but also for the application of fullerene in photocatalysis.

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