Construction of novel symmetric double Z-scheme BiFeO3/CuBi2O4/BaTiO3 photocatalyst with enhanced solar-light-driven photocatalytic performance for degradation of norfloxacin
Construction of novel symmetric double Z-scheme BiFeO3/CuBi2O4/BaTiO3 photocatalyst with enhanced solar-light-driven photocatalytic performance for degradation of norfloxacin
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新型对称双Z型BiFeO3/CuBi2O4/BaTiO3光催化剂的构建，具有增强的太阳光驱动光催化性能，用于降解诺氟沙星
DOI：
10.1016/j.apcatb.2020.119017
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发表时间：
2020-09
期刊：
影响因子：
--
通讯作者：
Dionysios D. Dionysiou
中科院分区：
文献类型：
--
作者：
Xingyuan Zhang;Xuan Wang;Jianan Chai;Shuang Xue;Ruxue Wang;Lei Jiang;Jun Wang;Zhaohong Zhang;Dionysios D. Dionysiou
制备了对称双Z结构的BiFeO 3/CuBi 2 O 4/BaTiO 3太阳光催化剂，并将其应用于诺氟沙星的光催化降解。比较了BiFeO 3/CuBi 2 O 4/BaTiO 3、BiFeO 3、CuBi 2 O 4和BaTiO 3的光催化性能。并对对称双Z型BiFeO 3/CuBi 2 O 4/BaTiO 3光催化体系的光催化机理进行了初步探讨。结果表明，BiFeO 3/CuBi 2 O 4/BaTiO 3具有更优越的上级光催化性能，这是由于对称双Z结构光催化剂的构建。它的光吸收范围扩展到紫外-可见光和近红外（NIR）光，有效地利用了整个太阳光谱。特别是该复合光催化剂的大VB氧化表面促进了-H+的分离，提高了氧化还原能力。此外，BiFeO 3/CuBi 2 O 4/BaTiO 3可循环使用，具有上级稳定性5次。此外，在光降解过程中，h+和·OH起主要作用，·O2-起次要作用。因此，BiFeO 3/CuBi 2 O 4/BaTiO 3/太阳光技术在抗生素废水处理中具有很好的应用前景。
A symmetric double Z-scheme BiFeO3/CuBi2O4/BaTiO3with enhanced solar photocatalytic performance was fabricated, and employed in the photodegradation of norfloxacin. The photocatalytic performances of BiFeO3/CuBi2O4/BaTiO3, BiFeO3, CuBi2O4and BaTiO3were compared. Also, the mechanism on the symmetric double Z-scheme BiFeO3/CuBi2O4/BaTiO3photocatalytic system was proposed. The results display that BiFeO3/CuBi2O4/BaTiO3has more superior photocatalytic performance, which results from the construction of the symmetric double Z-scheme photocatalyst. Its light absorption range is extended to UV-vis and near-infrared (NIR) light, which effectively utilizes the whole solar light spectrum. Especially, the large VB oxidation surface of this composite photocatalyst promotese--h+separation and improves the oxidation-reduction ability. Also, BiFeO3/CuBi2O4/BaTiO3can be recycled with superior stability for 5 cycles. Furthermore, in the photodegradation, theh+and •OH play major roles, while the •O2−plays little role. Hence, the BiFeO3/CuBi2O4/BaTiO3/solar light technology has great application prospects in the treatment of contaminated wastewater with antibiotics.
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影响因子：
7.3
作者：
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期刊：
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