Highly ordered TiO2 nanotubes on patterned substrates: Synthesis-in-place for ultrasensitive chemiresistors

Do Hong Kim, Young Seok Shim, Hi Gyu Moon, Hye Jung Chang, Dong Su, Soo Young Kim, Jin Sang Kim, Byeong Kwon Ju, Seok Jin Yoon, Ho Won Jang

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

Integrating a highly ordered TiO2 nanotube array with patterned substrates is an effective design strategy for taking advantage of one-dimensional nanotube structures such as high surface-to-volume ratio and novel functionalities of TiO2, but many challenges remain in synthesis. Here we report a novel synthesis-in-place method for highly ordered vertical TiO2 nanotube films on various patterned substrates and the application of the films to chemiresistive sensors. A unique synthetic strategy, in which the Pt bottom electrodes were clamped during anodization, leads to the complete anodization of the Ti layer to TiO2 nanotubes not only on SiO2/Si substrates but also on glass and sapphire substrates, which can be used as chemiresistors without additional processes. TiO2 nanotube sensors on SiO2/Si substrates show unprecedentedly ultrahigh responses to ethanol and acetone with detection limits down to parts per billion levels. Beyond the high sensitivity, selective responses to ethanol and acetone create opportunities for application in breath analyzers to diagnose human respiratory diseases.

Original languageEnglish
Pages (from-to)17824-17831
Number of pages8
JournalJournal of Physical Chemistry C
Volume117
Issue number34
DOIs
Publication statusPublished - 2013 Aug 29

Fingerprint

Nanotubes
nanotubes
Substrates
synthesis
Acetone
acetone
Ethanol
ethyl alcohol
respiratory diseases
Pulmonary diseases
Aluminum Oxide
sensors
Sensors
Sapphire
analyzers
sapphire
Glass
Electrodes
electrodes
glass

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Electronic, Optical and Magnetic Materials
  • Surfaces, Coatings and Films
  • Energy(all)

Cite this

Kim, D. H., Shim, Y. S., Moon, H. G., Chang, H. J., Su, D., Kim, S. Y., ... Jang, H. W. (2013). Highly ordered TiO2 nanotubes on patterned substrates: Synthesis-in-place for ultrasensitive chemiresistors. Journal of Physical Chemistry C, 117(34), 17824-17831. https://doi.org/10.1021/jp405150b

Highly ordered TiO2 nanotubes on patterned substrates : Synthesis-in-place for ultrasensitive chemiresistors. / Kim, Do Hong; Shim, Young Seok; Moon, Hi Gyu; Chang, Hye Jung; Su, Dong; Kim, Soo Young; Kim, Jin Sang; Ju, Byeong Kwon; Yoon, Seok Jin; Jang, Ho Won.

In: Journal of Physical Chemistry C, Vol. 117, No. 34, 29.08.2013, p. 17824-17831.

Research output: Contribution to journalArticle

Kim, DH, Shim, YS, Moon, HG, Chang, HJ, Su, D, Kim, SY, Kim, JS, Ju, BK, Yoon, SJ & Jang, HW 2013, 'Highly ordered TiO2 nanotubes on patterned substrates: Synthesis-in-place for ultrasensitive chemiresistors', Journal of Physical Chemistry C, vol. 117, no. 34, pp. 17824-17831. https://doi.org/10.1021/jp405150b
Kim, Do Hong ; Shim, Young Seok ; Moon, Hi Gyu ; Chang, Hye Jung ; Su, Dong ; Kim, Soo Young ; Kim, Jin Sang ; Ju, Byeong Kwon ; Yoon, Seok Jin ; Jang, Ho Won. / Highly ordered TiO2 nanotubes on patterned substrates : Synthesis-in-place for ultrasensitive chemiresistors. In: Journal of Physical Chemistry C. 2013 ; Vol. 117, No. 34. pp. 17824-17831.
@article{2ecd847471534f8485df3df0a2945828,
title = "Highly ordered TiO2 nanotubes on patterned substrates: Synthesis-in-place for ultrasensitive chemiresistors",
abstract = "Integrating a highly ordered TiO2 nanotube array with patterned substrates is an effective design strategy for taking advantage of one-dimensional nanotube structures such as high surface-to-volume ratio and novel functionalities of TiO2, but many challenges remain in synthesis. Here we report a novel synthesis-in-place method for highly ordered vertical TiO2 nanotube films on various patterned substrates and the application of the films to chemiresistive sensors. A unique synthetic strategy, in which the Pt bottom electrodes were clamped during anodization, leads to the complete anodization of the Ti layer to TiO2 nanotubes not only on SiO2/Si substrates but also on glass and sapphire substrates, which can be used as chemiresistors without additional processes. TiO2 nanotube sensors on SiO2/Si substrates show unprecedentedly ultrahigh responses to ethanol and acetone with detection limits down to parts per billion levels. Beyond the high sensitivity, selective responses to ethanol and acetone create opportunities for application in breath analyzers to diagnose human respiratory diseases.",
author = "Kim, {Do Hong} and Shim, {Young Seok} and Moon, {Hi Gyu} and Chang, {Hye Jung} and Dong Su and Kim, {Soo Young} and Kim, {Jin Sang} and Ju, {Byeong Kwon} and Yoon, {Seok Jin} and Jang, {Ho Won}",
year = "2013",
month = "8",
day = "29",
doi = "10.1021/jp405150b",
language = "English",
volume = "117",
pages = "17824--17831",
journal = "Journal of Physical Chemistry C",
issn = "1932-7447",
publisher = "American Chemical Society",
number = "34",

}

TY - JOUR

T1 - Highly ordered TiO2 nanotubes on patterned substrates

T2 - Synthesis-in-place for ultrasensitive chemiresistors

AU - Kim, Do Hong

AU - Shim, Young Seok

AU - Moon, Hi Gyu

AU - Chang, Hye Jung

AU - Su, Dong

AU - Kim, Soo Young

AU - Kim, Jin Sang

AU - Ju, Byeong Kwon

AU - Yoon, Seok Jin

AU - Jang, Ho Won

PY - 2013/8/29

Y1 - 2013/8/29

N2 - Integrating a highly ordered TiO2 nanotube array with patterned substrates is an effective design strategy for taking advantage of one-dimensional nanotube structures such as high surface-to-volume ratio and novel functionalities of TiO2, but many challenges remain in synthesis. Here we report a novel synthesis-in-place method for highly ordered vertical TiO2 nanotube films on various patterned substrates and the application of the films to chemiresistive sensors. A unique synthetic strategy, in which the Pt bottom electrodes were clamped during anodization, leads to the complete anodization of the Ti layer to TiO2 nanotubes not only on SiO2/Si substrates but also on glass and sapphire substrates, which can be used as chemiresistors without additional processes. TiO2 nanotube sensors on SiO2/Si substrates show unprecedentedly ultrahigh responses to ethanol and acetone with detection limits down to parts per billion levels. Beyond the high sensitivity, selective responses to ethanol and acetone create opportunities for application in breath analyzers to diagnose human respiratory diseases.

AB - Integrating a highly ordered TiO2 nanotube array with patterned substrates is an effective design strategy for taking advantage of one-dimensional nanotube structures such as high surface-to-volume ratio and novel functionalities of TiO2, but many challenges remain in synthesis. Here we report a novel synthesis-in-place method for highly ordered vertical TiO2 nanotube films on various patterned substrates and the application of the films to chemiresistive sensors. A unique synthetic strategy, in which the Pt bottom electrodes were clamped during anodization, leads to the complete anodization of the Ti layer to TiO2 nanotubes not only on SiO2/Si substrates but also on glass and sapphire substrates, which can be used as chemiresistors without additional processes. TiO2 nanotube sensors on SiO2/Si substrates show unprecedentedly ultrahigh responses to ethanol and acetone with detection limits down to parts per billion levels. Beyond the high sensitivity, selective responses to ethanol and acetone create opportunities for application in breath analyzers to diagnose human respiratory diseases.

UR - http://www.scopus.com/inward/record.url?scp=84883340462&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84883340462&partnerID=8YFLogxK

U2 - 10.1021/jp405150b

DO - 10.1021/jp405150b

M3 - Article

AN - SCOPUS:84883340462

VL - 117

SP - 17824

EP - 17831

JO - Journal of Physical Chemistry C

JF - Journal of Physical Chemistry C

SN - 1932-7447

IS - 34

ER -