한국분말재료학회지 (Journal of Powder Materials)

  • 제24권4호
  • /
  • Pages.279-284
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  • 2017
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  • 2799-8525(pISSN)
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  • 2799-8681(eISSN)
한국분말재료학회 (*구 분말야금학회) (The Korean Powder Metallurgy & Materials Institute)
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The Synthesis and Photocatalytic activity of Carbon Nanotube-mixed TiO2 Nanotubes

  • Park, Chun Woong (Department of Materials Science and Engineering, Hanyang University) ;
  • Kim, Young Do (Department of Materials Science and Engineering, Hanyang University) ;
  • Sekino, Tohru (The Institute of Scientific and Industrial Research, Osaka University) ;
  • Kim, Se Hoon (Materials Convergence & Design R&D Center, KATECH)
  • 투고 : 2017.08.11
  • 심사 : 2017.08.22
  • 발행 : 2017.08.28
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초록

The formation mechanism and photocatalytic properties of a multiwalled carbon nanotube (MWCNT)/$TiO_2$-based nanotube (TNTs) composite are investigated. The CNT/TNT composite is synthesized via a solution chemical route. It is confirmed that this 1-D nanotube composite has a core-shell nanotubular structure, where the TNT surrounds the CNT core. The photocatalytic activity investigated based on the methylene blue degradation test is superior to that of with pure TNT. The CNTs play two important roles in enhancing the photocatalytic activity. One is to act as a template to form the core-shell structure while titanate nanosheets are converted into nanotubes. The other is to act as an electron reservoir that facilitates charge separation and electron transfer from the TNT, thus decreasing the electron-hole recombination efficiency.

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