Fullerene C70 decorated TiO2 nanowires for visible-light-responsive photocatalyst

Er Chieh Cho, Jing Hao Ciou, Jia Huei Zheng, Job Pan, Yu Sheng Hsiao, Kuen Chan Lee, Jen Hsien Huang

Research output: Contribution to journalArticle

28 Citations (Scopus)

Abstract

In this study, we have synthesized C60 and C70-modified TiO2 nanowire (NW) through interfacial chemical bonding. The results indicate that the fullerenes (C60 and C70 derivatives) can act as sinks for photogenerated electrons in TiO2, while the fullerene/TiO2 is illuminated under ultraviolet (UV) light. Therefore, in comparison to the pure TiO2 NWs, the modified TiO2 NWs display a higher photocatalytic activity under UV irradiation. Moreover, the fullerenes also can function as a sensitizer to TiO2 which expand the utilization of solar light from UV to visible light. The results reveal that the C70/TiO2 NWs show a significant photocatalytic activity for degradation of methylene blue (MB) in visible light region. To better understand the mechanism responsible for the effect of fullerenes on the photocatalytic properties of TiO2, the electron only devices and photoelectrochemical cells based on fullerenes/TiO2 are also fabricated and evaluated.

Original languageEnglish
Pages (from-to)536-546
Number of pages11
JournalApplied Surface Science
Volume355
DOIs
Publication statusPublished - Nov 15 2015

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Keywords

  • Fullerene
  • Nanowire
  • Photocatalyst
  • TiO
  • Visible light

ASJC Scopus subject areas

  • Surfaces, Coatings and Films

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