Guanlong Yu , Qifang Sun , Yi Yang , Si Chen , Yuannan Long , Yifu Li , Shiyong Ge , Dian Zheng
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引用次数: 0
Abstract
With the growing problem of water pollution caused by antibiotics, the development of photocatalysts with high photogenerated carrier separation efficiency is crucial. A high-efficiency microsphere Fe/BiOCl/BiVO4 with S-scheme heterojunction was synthesized by solvothermal method and its ciprofloxacin (CIP) degradation performance were investigated under visible light. XRD, FT-IR, SEM, EDS, HRTEM and XPS results show that the photocatalytic have good crystallization, morphology and the formed a microsphere. The photocatalytic performance of Fe/BiOCl/BiVO4 for CIP was superior to pure BiOCl and BiVO4 due to the microsphere and formed heterostructure between BiOCl and BiVO4. The influencing factors of CIP degradation by Fe/BiOCl/BiVO4 were investigated, and the results showed that Fe/BiOCl/BiVO4 had high degradation efficiency not only at pH 5–9, but also in the presence of inorganic Cl−, NO3− and metal ions. Under the optimal conditions, the degradation rate of CIP was up to 100% in 75 min. In addition to CIP, the Fe/BiOCl/BiVO4 photocatalysts degraded other organic pollutants, such as tetracycline, oxytetracycline, chlortetracycline, ofloxacin, levofloxacin, and rhodamine B, by more than 92%. The main active species were photogenerated holes (h+) and superoxide radicals (·O2−). In addition, possible intermediates and toxicity of intermediates were analyzed and five potential pathways for CIP degradation were proposed.
期刊介绍：
Progress in Natural Science: Materials International provides scientists and engineers throughout the world with a central vehicle for the exchange and dissemination of basic theoretical studies and applied research of advanced materials. The emphasis is placed on original research, both analytical and experimental, which is of permanent interest to engineers and scientists, covering all aspects of new materials and technologies, such as, energy and environmental materials; advanced structural materials; advanced transportation materials, functional and electronic materials; nano-scale and amorphous materials; health and biological materials; materials modeling and simulation; materials characterization; and so on. The latest research achievements and innovative papers in basic theoretical studies and applied research of material science will be carefully selected and promptly reported. Thus, the aim of this Journal is to serve the global materials science and technology community with the latest research findings.
As a service to readers, an international bibliography of recent publications in advanced materials is published bimonthly.
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