One-Dimensional CdS/TiO2 Nanofiber Composites as Efficient Visible-Light-Driven Photocatalysts for Selective Organic Transformation: Synthesis, Characterization, and Performance

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• 作者：Na Qin ; Yuhao Liu ; Weiming Wu ; Lijuan Shen ; Xun Chen ; Zhaohui Li ; Ling Wu
• 刊名：Langmuir
• 出版年：2015
• 出版时间：January 27, 2015
• 年：2015
• 卷：31
• 期：3
• 页码：1203-1209
• 全文大小：460K
• ISSN：1520-5827

文摘

CdS/TiO₂ heterojunction nanofibers have been successfully synthesized through the photodeposition of CdS on 1D TiO₂ nanofibers that were prepared via a facile electrospinning method. The as-synthesized samples showed high photocatalytic activities upon selectively oxidizing a series of alcohols into corresponding aldehydes under visible light irradiation. TEM observations revealed that CdS was closely grown on the TiO₂ nanofibers. Moreover, it was found that the CdS/TiO₂ nanofibers that were photodeposited for 4 h exhibited the highest catalytic activity, with a conversion of 22% and a selectivity of 99%, which were much higher than those of commercial CdS. In addition, we also discuss the photoabsorption performance and the reaction mechanism of the photocatalytic oxidation of alcohols.