Abstract
The goethite/g-C3N4 photocatalyst was successfully synthesized by a simple and convenient method. The properties and structure of the as-prepared catalysts were characterized by a variety of analytical methods. The results indicated goethite was uniformly accumulated on the surface of g-C3N4. Furthermore, a novel binary goethite/g-C3N4 photocatalyst was successfully constructed by loading goethite into the g-C3N4 surface as an electron medium. The photodegradation efficiency of goethite/g-C3N4 composites for TYL was studied under simulated sunlight irradiation. The results show that the photodegradation efficiency of goethite/g-C3N4 composites on TYL is much higher than that of goethite and g-C3N4 under simulated sunlight irradiation. The content of the goethite in the composites was analyzed and compared under simulated solar irradiation to further improve the photocatalytic activity. In all as-synthesized composites, the goethite/g-C3N4 with 50 wt% of goethite have the highest photodegradation efficiency and can decompose almost all TYL within 30 min under simulated solar illumination. A sample of goethite/g-C3N4 also exhibited favorable stability and durability. It is a promising green and non-toxic photocatalyst that can be used to treat water contaminated with antibiotics.
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Acknowledgements
The study was financially supported by the China National Science Fund Program (No. 41503095), the China Postdoctoral Science Foundation funded project (No. 2016M601994) and the Initiative Funding Programs for Doctoral Research of Northwest A&F University (Z111021702).
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Dong, H., Guo, X. & Yin, Y. A facile synthesis of goethite-modified g-C3N4 composite for photocatalytic degradation of tylosin in an aqueous solution. Res Chem Intermed 44, 3151–3167 (2018). https://doi.org/10.1007/s11164-018-3298-z
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DOI: https://doi.org/10.1007/s11164-018-3298-z