科研之友
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摘要
Catalytic photodegradation has been found to be a versatile, low-cost, and green technology for environmental decontamination. Bismuth-based compounds have attracted a lot of attention for their efficient photocatalytic properties. It is always of great importance to develop new catalysts in the photodegradation field. In this research, hierarchical porous BiF3Bi2NbO5F coreshell structures have been successfully prepared via a simple solvothermal route. A possible growth mechanism for the coreshell structure was proposed based on time-dependent-evolution experiments. X-ray powder diffraction was used to determine the phase composition. Scanning electron microscopy and transmission electron microscopy were employed to characterize the morphologies of the as-prepared samples. Experiments demonstrated that the volume ratio of ethylene glycol to water played a determinative role in the final morphology of the products. The band gap of the as-prepared BiF3Bi2NbO5F composite was estimated to about 3.47 eV. The novel hierarchical BiF3Bi2NbO5F coreshell structures could serve as a catalyst for photosensitized degradation of Rhodamine B under visible light irradiation. Moreover, the photodegradation efficiency of the samples was greatly associated with their surface morphology.
- 出版日期2015-1-8
- 单位南昌大学
