Enhanced Photocatalytic Activity Based on Composite Structure with Downconversion Material and Graphene

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• 作者：Ke Fu ; Jinzhao Huang ; Nannan Yao ; Xijin Xu ; Mingzhi Wei
• 刊名：Industrial & Engineering Chemistry Research
• 出版年：2016
• 出版时间：February 17, 2016
• 年：2016
• 卷：55
• 期：6
• 页码：1559-1565
• 全文大小：514K
• ISSN：1520-5045

文摘

TiO₂ nanorods arrays (TiO₂ NRAs):Eu³⁺, Tb³⁺ decorated with Cs₂CO₃/CdS grown on carbon textiles coated with a TiO₂–graphene (TiO₂-G) thin film (TiO₂-G/TiO₂ NRAs:Eu³⁺, Tb³⁺/Cs₂CO₃/CdS) was fabricated. The as-prepared sample exhibits an excellent photodegradation performance under xenon (Xe) lamp light irradiation. The result indicates that the presence of Eu³⁺, Tb³⁺ can be excited by ultraviolet light to produce a high intensity visibe light absorbed by CdS, which can generate more photogenerated electron hole pairs. In addition, the presence of graphene is an important factor in accelerating the transferring of photogenerated electron to carbon textiles for photocatalytic reaction. This work can offer an alternative route for designing a hybrid structure system to utilize effectively broad-spectrum solar light and suppress the recombination of photogenerated electron–hole pairs.