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Carbon Nanotubes-Wrapped Urchin-Like Bi₂S₃ Composites with Enhanced Photocatalytic Performance
Bin Zeng1, Wanfeng Liu1, Wujun Zeng1
1College of Mechanical Engineering, Hunan University of Arts and Science, Changde 415000, People's Republic of China.
Abstract:
The urchin-like Bi₂S₃/carbon nanotubes (Bi₂S₃ urchin/CNTs) composites were successfully synthesized by a microwave method. X-ray diffraction (XRD), Fourier Transform infrared spectra (FTIR), Raman spectra, diffused reflectance spectra (DRS) were used for the characterization of theobtained photocatalysts. The SEM and TEM morphology of Bi₂S₃ urchin/CNTs composites showed that urchin-like nanoparticles were assembled by many nanorods which grew radially from the center and nanorods were wrapped with CNTs on their end. The photocatalytic performance was studied by the degradation of methyl orange (MO) under visible light and the photodegradation efficiency of Bi₂S₃ urchin/CNTs hybrid materials exhibited significantly excellent photocatalytic activity. A possible mechanism for the photodegradation of MO was also suggested.
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