Fullerene C 70 decorated TiO 2 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 journalArticlepeer-review

42 Citations (Scopus)

Abstract

In this study, we have synthesized C 60 and C 70 -modified TiO 2 nanowire (NW) through interfacial chemical bonding. The results indicate that the fullerenes (C 60 and C 70 derivatives) can act as sinks for photogenerated electrons in TiO 2 , while the fullerene/TiO 2 is illuminated under ultraviolet (UV) light. Therefore, in comparison to the pure TiO 2 NWs, the modified TiO 2 NWs display a higher photocatalytic activity under UV irradiation. Moreover, the fullerenes also can function as a sensitizer to TiO 2 which expand the utilization of solar light from UV to visible light. The results reveal that the C 70 /TiO 2 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 TiO 2 , the electron only devices and photoelectrochemical cells based on fullerenes/TiO 2 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

Keywords

  • Fullerene
  • Nanowire
  • Photocatalyst
  • TiO
  • Visible light

ASJC Scopus subject areas

  • General Chemistry
  • Condensed Matter Physics
  • Surfaces, Coatings and Films
  • General Physics and Astronomy
  • Surfaces and Interfaces

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