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Construction of novel n-type semiconductor anchor on 2D honey comb like FeNbO4/RGO for visible light drive photocatalytic degradation of norfloxacin
Journal of Photochemistry and Photobiology A: Chemistry ( IF 4.3 ) Pub Date : 2020-06-16 , DOI: 10.1016/j.jphotochem.2020.112712
Benjamin Moses Filip Jones , Duraisamy Maruthamani , Velluchamy Muthuraj

A novel FeNbO4/RGO photocatalyst was prepared via hydrothermal method followed by ultrasonication for the environmental remediation. The obtained samples were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), UV–vis diffuse reflection spectroscopy (UV–vis DRS), photoluminescence (PL) spectroscopy, electrochemical impedance spectra (EIS) and mott-schottky (M–S) plot. It was indicated that the monoclinic FeNbO4 was anchored on reduced graphene oxide nanosheet (RGO) which enhances visible-light absorption. The prepared hybrid samples exhibited the obvious improvement of photocatalytic activity and stability for norfloxacin (NRF) degradation under visible light irradiation 250 W Xe lamp as source with 420 nm UV- cut off filter. A Gas chromatography-mass spectrometry (GC–MS) was used to identify the major intermediates during NRF degradation. The photocatalytic efficiency for FeNbO4/RGO was about 87 % and its rate constant value was greater than bare FeNbO4.



中文翻译:

FeNbO 4 / RGO等二维蜜梳上新型n型半导体锚固剂的构建,用于可见光驱动诺氟沙星的光催化降解

通过水热法制备了新型的FeNbO 4 / RGO光催化剂,然后通过超声处理进行了环境修复。所获得的样品通过X射线衍射(XRD),透射电子显微镜(TEM),扫描电子显微镜(SEM),X射线光电子能谱(XPS),UV-可见漫反射光谱(UV-vis DRS),光致发光(PL)光谱,电化学阻抗谱(EIS)和莫特-肖特基(MS)图。结果表明,单斜FeNbO 4将其锚定在增强的可见光吸收的还原型氧化石墨烯纳米片(RGO)上。制备的杂化样品在可见光辐照下以250 nm紫外线截止滤光片为光源的250 W Xe灯下,对诺氟沙星(NRF)的降解表现出明显的光催化活性和稳定性的改善。气相色谱-质谱法(GC-MS)用于鉴定NRF降解过程中的主要中间体。FeNbO 4 / RGO的光催化效率约为87%,其速率常数值大于裸FeNbO 4。

更新日期:2020-06-16
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