Synthesis and photocatalytic activity of anatase TiO 2 nanoparticles-coated carbon nanotubes

Yi Xie; Sung Hwan Heo; Seung Hwa Yoo; Ghafar Ali; Sung Oh Cho

doi:10.1007/s11671-009-9513-5

Synthesis and photocatalytic activity of anatase TiO ₂ nanoparticles-coated carbon nanotubes

Yi Xie
, Sung Hwan Heo
, Seung Hwa Yoo
, Ghafar Ali
, Sung Oh Cho

Department of Quantum System Engineering

Korea Advanced Institute of Science and Technology

Research output: Contribution to journal › Journal article › peer-review

72 Scopus citations

Abstract

A simple and straightforward approach to prepare TiO ₂-coated carbon nanotubes (CNTs) is presented. Anatase TiO ₂ nanoparticles (NPs) with the average size ~8 nm were coated on CNTs from peroxo titanic acid (PTA) precursor even at low temperature of 100 °C. We demonstrate the effects of CNTs/TiO ₂ molar ratio on the adsorption capability and photocatalytic efficiency under UV-visible irradiation. The samples showed not only good optical absorption in visible range, but also great adsorption capacity for methyl orange (MO) dye molecules. These properties facilitated the great enhancement of photocatalytic activity of TiO ₂ NPs-coated CNTs photocatalysts. The TiO ₂ NPs-coated CNTs exhibited 2. 45 times higher photocatalytic activity for MO degradation than that of pure TiO ₂.

Original language	English
Pages (from-to)	603-607
Number of pages	5
Journal	Nanoscale Research Letters
Volume	5
Issue number	3
DOIs	https://doi.org/10.1007/s11671-009-9513-5
State	Published - 2010.03

Keywords

Carbon nanotubes
Methyl orange
Nanoparticles
Photocatalyst
TiO

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title = "Synthesis and photocatalytic activity of anatase TiO 2 nanoparticles-coated carbon nanotubes",

abstract = "A simple and straightforward approach to prepare TiO 2-coated carbon nanotubes (CNTs) is presented. Anatase TiO 2 nanoparticles (NPs) with the average size \textasciitilde{}8 nm were coated on CNTs from peroxo titanic acid (PTA) precursor even at low temperature of 100 °C. We demonstrate the effects of CNTs/TiO 2 molar ratio on the adsorption capability and photocatalytic efficiency under UV-visible irradiation. The samples showed not only good optical absorption in visible range, but also great adsorption capacity for methyl orange (MO) dye molecules. These properties facilitated the great enhancement of photocatalytic activity of TiO 2 NPs-coated CNTs photocatalysts. The TiO 2 NPs-coated CNTs exhibited 2. 45 times higher photocatalytic activity for MO degradation than that of pure TiO 2.",

keywords = "Carbon nanotubes, Methyl orange, Nanoparticles, Photocatalyst, TiO",

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T1 - Synthesis and photocatalytic activity of anatase TiO 2 nanoparticles-coated carbon nanotubes

AU - Xie, Yi

AU - Heo, Sung Hwan

AU - Yoo, Seung Hwa

AU - Ali, Ghafar

AU - Cho, Sung Oh

PY - 2010/3

Y1 - 2010/3

N2 - A simple and straightforward approach to prepare TiO 2-coated carbon nanotubes (CNTs) is presented. Anatase TiO 2 nanoparticles (NPs) with the average size ~8 nm were coated on CNTs from peroxo titanic acid (PTA) precursor even at low temperature of 100 °C. We demonstrate the effects of CNTs/TiO 2 molar ratio on the adsorption capability and photocatalytic efficiency under UV-visible irradiation. The samples showed not only good optical absorption in visible range, but also great adsorption capacity for methyl orange (MO) dye molecules. These properties facilitated the great enhancement of photocatalytic activity of TiO 2 NPs-coated CNTs photocatalysts. The TiO 2 NPs-coated CNTs exhibited 2. 45 times higher photocatalytic activity for MO degradation than that of pure TiO 2.

AB - A simple and straightforward approach to prepare TiO 2-coated carbon nanotubes (CNTs) is presented. Anatase TiO 2 nanoparticles (NPs) with the average size ~8 nm were coated on CNTs from peroxo titanic acid (PTA) precursor even at low temperature of 100 °C. We demonstrate the effects of CNTs/TiO 2 molar ratio on the adsorption capability and photocatalytic efficiency under UV-visible irradiation. The samples showed not only good optical absorption in visible range, but also great adsorption capacity for methyl orange (MO) dye molecules. These properties facilitated the great enhancement of photocatalytic activity of TiO 2 NPs-coated CNTs photocatalysts. The TiO 2 NPs-coated CNTs exhibited 2. 45 times higher photocatalytic activity for MO degradation than that of pure TiO 2.

KW - Carbon nanotubes

KW - Methyl orange

KW - Nanoparticles

KW - Photocatalyst

KW - TiO

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EP - 607

JO - Nanoscale Research Letters

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ER -

Synthesis and photocatalytic activity of anatase TiO ₂ nanoparticles-coated carbon nanotubes

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