Enhanced visible-light activity of titania via confinement inside carbon nanotubes

Wei Chen; Zhongli Fan; Bei Zhang; Guijun Ma; Kazuhiro Takanabe; Xixiang Zhang; Zhiping Lai

doi:10.1021/ja205997x

Enhanced visible-light activity of titania via confinement inside carbon nanotubes

Wei Chen, Zhongli Fan, Bei Zhang, Guijun Ma, Kazuhiro Takanabe, Xixiang Zhang, Zhiping Lai

Research output: Contribution to journal › Article › peer-review

108 Scopus citations

Abstract

Titania confined inside carbon nanotubes (CNTs) was synthesized using a restrained hydrolysis method. Raman spectra and magnetic measurements using a SQUID magnetometer suggested the formation of remarkable oxygen vacancies over the encapsulated TiO 2 in comparison with nanoparticles dispersed on the outer surface of CNTs, extending the photoresponse of TiO 2 from the UV to the visible-light region. The CNT-confined TiO 2 exhibited improved visible-light activity in the degradation of methylene blue (MB) relative to the outside titania and commercial P25, which is attributed to the modification of the electronic structure of TiO 2 induced by the unique confinement inside CNTs. These results provide further insight into the effect of confinement within CNTs, and the composites are expected to be promising for applications in visible-light photocatalysis. © 2011 American Chemical Society.

Original language	English (US)
Pages (from-to)	14896-14899
Number of pages	4
Journal	Journal of the American Chemical Society
Volume	133
Issue number	38
DOIs	https://doi.org/10.1021/ja205997x
State	Published - Sep 28 2011

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: We thank Dr. Y. Yang, Q. Wang, and X. Liu from King Abdullah University of Science and Technology (KAUST) for their help with Raman spectroscopy, TEM, and drawing, respectively. We also acknowledge the faculty distribution fund of KAUST.

ASJC Scopus subject areas

Biochemistry
Colloid and Surface Chemistry
General Chemistry
Catalysis

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10.1021/ja205997x

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title = "Enhanced visible-light activity of titania via confinement inside carbon nanotubes",

abstract = "Titania confined inside carbon nanotubes (CNTs) was synthesized using a restrained hydrolysis method. Raman spectra and magnetic measurements using a SQUID magnetometer suggested the formation of remarkable oxygen vacancies over the encapsulated TiO 2 in comparison with nanoparticles dispersed on the outer surface of CNTs, extending the photoresponse of TiO 2 from the UV to the visible-light region. The CNT-confined TiO 2 exhibited improved visible-light activity in the degradation of methylene blue (MB) relative to the outside titania and commercial P25, which is attributed to the modification of the electronic structure of TiO 2 induced by the unique confinement inside CNTs. These results provide further insight into the effect of confinement within CNTs, and the composites are expected to be promising for applications in visible-light photocatalysis. {\textcopyright} 2011 American Chemical Society.",

author = "Wei Chen and Zhongli Fan and Bei Zhang and Guijun Ma and Kazuhiro Takanabe and Xixiang Zhang and Zhiping Lai",

note = "KAUST Repository Item: Exported on 2020-10-01 Acknowledgements: We thank Dr. Y. Yang, Q. Wang, and X. Liu from King Abdullah University of Science and Technology (KAUST) for their help with Raman spectroscopy, TEM, and drawing, respectively. We also acknowledge the faculty distribution fund of KAUST.",

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doi = "10.1021/ja205997x",

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T1 - Enhanced visible-light activity of titania via confinement inside carbon nanotubes

AU - Chen, Wei

AU - Fan, Zhongli

AU - Zhang, Bei

AU - Ma, Guijun

AU - Takanabe, Kazuhiro

AU - Zhang, Xixiang

AU - Lai, Zhiping

N1 - KAUST Repository Item: Exported on 2020-10-01 Acknowledgements: We thank Dr. Y. Yang, Q. Wang, and X. Liu from King Abdullah University of Science and Technology (KAUST) for their help with Raman spectroscopy, TEM, and drawing, respectively. We also acknowledge the faculty distribution fund of KAUST.

PY - 2011/9/28

Y1 - 2011/9/28

N2 - Titania confined inside carbon nanotubes (CNTs) was synthesized using a restrained hydrolysis method. Raman spectra and magnetic measurements using a SQUID magnetometer suggested the formation of remarkable oxygen vacancies over the encapsulated TiO 2 in comparison with nanoparticles dispersed on the outer surface of CNTs, extending the photoresponse of TiO 2 from the UV to the visible-light region. The CNT-confined TiO 2 exhibited improved visible-light activity in the degradation of methylene blue (MB) relative to the outside titania and commercial P25, which is attributed to the modification of the electronic structure of TiO 2 induced by the unique confinement inside CNTs. These results provide further insight into the effect of confinement within CNTs, and the composites are expected to be promising for applications in visible-light photocatalysis. © 2011 American Chemical Society.

AB - Titania confined inside carbon nanotubes (CNTs) was synthesized using a restrained hydrolysis method. Raman spectra and magnetic measurements using a SQUID magnetometer suggested the formation of remarkable oxygen vacancies over the encapsulated TiO 2 in comparison with nanoparticles dispersed on the outer surface of CNTs, extending the photoresponse of TiO 2 from the UV to the visible-light region. The CNT-confined TiO 2 exhibited improved visible-light activity in the degradation of methylene blue (MB) relative to the outside titania and commercial P25, which is attributed to the modification of the electronic structure of TiO 2 induced by the unique confinement inside CNTs. These results provide further insight into the effect of confinement within CNTs, and the composites are expected to be promising for applications in visible-light photocatalysis. © 2011 American Chemical Society.

UR - http://hdl.handle.net/10754/561881

UR - https://pubs.acs.org/doi/10.1021/ja205997x

UR - http://www.scopus.com/inward/record.url?scp=80053081028&partnerID=8YFLogxK

U2 - 10.1021/ja205997x

DO - 10.1021/ja205997x

M3 - Article

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SN - 0002-7863

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SP - 14896

EP - 14899

JO - Journal of the American Chemical Society

JF - Journal of the American Chemical Society

IS - 38

ER -

Enhanced visible-light activity of titania via confinement inside carbon nanotubes

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Bibliographical note

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