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Phthalocyanine/chitosan-TiO2 photocatalysts: Characterization and photocatalytic activity

机译:酞菁/壳聚糖-TiO2光催化剂:表征和光催化活性

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Chitosan (CS) was used as a template to prepare a hybrid chitosan-phthalocyanine-TiO2 (PC/CS-TiO2) photocatalyst at room temperature without any calcination treatment. The as-prepared hybrid photocatalyst (PC/CS-TiO2) was characterized using X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR) and UV-vis diffuse reflectance spectroscopy (DRS). The results of the photodegradation of aniline, used as a model pollutant, revealed that the hybrid photocatalyst (PC/CS-TiO2) exhibited a photocatalytic activity under visible-light irradiation. The enhanced activity of the hybrid catalyst is attributed to the cooperative role of the three components of the photocatalyst; chitosan as a template for the immobilization crystalline TiO2 nanoparticles, phthalocyanine that promote the light absorption in the visible range and TiO2 acting as an acceptor of electrons generated by the photons absorption to produce superoxide radicals. (C) 2015 Elsevier B.V. All rights reserved.
机译:以壳聚糖(CS)为模板,在室温下无需煅烧处理即可制备壳聚糖-酞菁-TiO2杂化光催化剂(PC / CS-TiO2)。使用X射线衍射(XRD),傅立叶变换红外光谱(FT-IR)和紫外可见漫反射光谱(DRS)对制备的杂化光催化剂(PC / CS-TiO2)进行了表征。苯胺作为模型污染物的光降解结果表明,杂化光催化剂(PC / CS-TiO2)在可见光照射下表现出光催化活性。杂化催化剂的活性增强归因于光催化剂的三种组分的协同作用。壳聚糖作为固定化TiO2纳米颗粒的模板,酞菁促进可见光范围内的光吸收,TiO2充当光子吸收产生的电子的受体,从而产生超氧化物自由基。 (C)2015 Elsevier B.V.保留所有权利。

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