Selected Paper : Oxygenated Cup-Stacked Carbon Nanofibers/TiO₂ Composite Films with Enhanced Photocatalytic Currents

• Kikuo Komori

• Kentaro Yamura

• Atsushi Kogo

• Yusuke Takahashi

• Tetsu Tatsuma

• Akiyoshi Sakoda

• Yasuyuki Sakai

抄録

Oxygenated cup-stacked carbon nanofibers (ox-CSCNFs), the surface of which provides highly ordered graphene edges and oxygen-containing functional groups, were introduced to a nanoporous TiO2 photoelectrode for enhanced photocatalytic currents. The ox-CSCNFs are characterized by good electric conductivity and high dispersibility in solvents. Under UV irradiation, short-circuit photocurrents based on water oxidation at the photoelectrode and oxygen reduction at a counter electrode were enhanced by about 15 times by introduction of the ox-CSCNFs. The oxygen-containing functional groups, which may facilitate good contact between the ox-CSCNFs and TiO2, are essential for the dramatic enhancement in the photocurrent. Recombination efficiency between excited electrons and generated holes may be reduced by facilitated electron transport from excited TiO2 to a substrate electrode via ox-CSCNFs. Photocurrents for photocatalytic oxidation of glucose were also enhanced by about 20-fold. The present composite materials would be applied to photocatalytic and photovoltaic cells with enhanced performances.

収録刊行物

• Bulletin of the Chemical Society of Japan

  Bulletin of the Chemical Society of Japan 89 (5), 603-607, 2016-05

  Tokyo : Chemical Society of Japan

キーワード

• General Chemistry

詳細情報

• CRID: 1523669555200146944
• NII論文ID: 130005150882
• NII書誌ID: AA00580132
• ISSN: 00092673
• ISSN: 13480634
• DOI: 10.1246/bcsj.20150419
• NDL書誌ID: 027286958
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I027286958
• Web Site: https://academic.oup.com/bcsj/article-pdf/89/5/603/56278902/bcsj.20150419.pdf
• 本文言語コード: en
• NDL 雑誌分類:
  • ZP1(科学技術--化学・化学工業)
• データソース種別:
  • NDL
  • Crossref
  • CiNii Articles
  • KAKEN