TiO2 Nanobelts/CdSSe Quantum Dots Nanocomposite

Shen V. Chong, Narayanaswamy Suresh, James Xia, Najeh Al-Salim, Hicham Idriss

Research output: Contribution to journalArticle

51 Citations (Scopus)

Abstract

This work presents the successful noncovalent attachment of similar to 5 nm diameter cadmium-sulfur-selenium (CdSSe) quantum dots on strips of anatase TiO2 nanobelts. The TiO2 nanobelts were hydrothermally synthesized from a strong alkaline solution and subsequently heat-treated to achieve the anatase phase. The self-assembled-monolayer (SAM) technique was employed to attach the quantum dots onto the nanobelts. Due to the hydrophobic nature of the quantum dots, the surface of the nanobelts was first self-assembled with a layer of hydrophobic organic layer before both mixtures were added together. The resulting nanostructure assembly and composition was confirmed via transmission-electron-microscopy (TEM) imaging, Raman spectroscopy, UV-visible absorption spectroscopy (UV-vis), and X-ray photoelectron spectroscopy (XPS). Both Raman and UV-vis spectroscopies indicate evidence of interactions between the quantum dots and nanobelts. The visible-light sensitizing effect of the quantum dots was demonstrated in photocurrent experiments.

Original languageEnglish
Pages (from-to)10389-10393
Number of pages5
JournalThe Journal of Physical Chemistry C
Volume111
Issue number28
Early online date27 Jun 2007
DOIs
Publication statusPublished - 19 Jul 2007

Keywords

  • photocatalytic properties
  • nanocrystalline TIO2
  • titanate nanotubes
  • solar-cells
  • nanowires
  • electrodes
  • raman
  • CDSE
  • films
  • photosensitization

Cite this

Chong, S. V., Suresh, N., Xia, J., Al-Salim, N., & Idriss, H. (2007). TiO2 Nanobelts/CdSSe Quantum Dots Nanocomposite. The Journal of Physical Chemistry C, 111(28), 10389-10393. https://doi.org/10.1021/jp072579u

TiO2 Nanobelts/CdSSe Quantum Dots Nanocomposite. / Chong, Shen V.; Suresh, Narayanaswamy; Xia, James; Al-Salim, Najeh; Idriss, Hicham.

In: The Journal of Physical Chemistry C, Vol. 111, No. 28, 19.07.2007, p. 10389-10393.

Research output: Contribution to journalArticle

Chong, SV, Suresh, N, Xia, J, Al-Salim, N & Idriss, H 2007, 'TiO2 Nanobelts/CdSSe Quantum Dots Nanocomposite', The Journal of Physical Chemistry C, vol. 111, no. 28, pp. 10389-10393. https://doi.org/10.1021/jp072579u
Chong SV, Suresh N, Xia J, Al-Salim N, Idriss H. TiO2 Nanobelts/CdSSe Quantum Dots Nanocomposite. The Journal of Physical Chemistry C. 2007 Jul 19;111(28):10389-10393. https://doi.org/10.1021/jp072579u
Chong, Shen V. ; Suresh, Narayanaswamy ; Xia, James ; Al-Salim, Najeh ; Idriss, Hicham. / TiO2 Nanobelts/CdSSe Quantum Dots Nanocomposite. In: The Journal of Physical Chemistry C. 2007 ; Vol. 111, No. 28. pp. 10389-10393.
@article{f901ef43cec6462dacc1957184f6ddab,
title = "TiO2 Nanobelts/CdSSe Quantum Dots Nanocomposite",
abstract = "This work presents the successful noncovalent attachment of similar to 5 nm diameter cadmium-sulfur-selenium (CdSSe) quantum dots on strips of anatase TiO2 nanobelts. The TiO2 nanobelts were hydrothermally synthesized from a strong alkaline solution and subsequently heat-treated to achieve the anatase phase. The self-assembled-monolayer (SAM) technique was employed to attach the quantum dots onto the nanobelts. Due to the hydrophobic nature of the quantum dots, the surface of the nanobelts was first self-assembled with a layer of hydrophobic organic layer before both mixtures were added together. The resulting nanostructure assembly and composition was confirmed via transmission-electron-microscopy (TEM) imaging, Raman spectroscopy, UV-visible absorption spectroscopy (UV-vis), and X-ray photoelectron spectroscopy (XPS). Both Raman and UV-vis spectroscopies indicate evidence of interactions between the quantum dots and nanobelts. The visible-light sensitizing effect of the quantum dots was demonstrated in photocurrent experiments.",
keywords = "photocatalytic properties, nanocrystalline TIO2, titanate nanotubes, solar-cells, nanowires, electrodes, raman, CDSE, films, photosensitization",
author = "Chong, {Shen V.} and Narayanaswamy Suresh and James Xia and Najeh Al-Salim and Hicham Idriss",
year = "2007",
month = "7",
day = "19",
doi = "10.1021/jp072579u",
language = "English",
volume = "111",
pages = "10389--10393",
journal = "The Journal of Physical Chemistry C",
issn = "1932-7447",
publisher = "American Chemical Society",
number = "28",

}

TY - JOUR

T1 - TiO2 Nanobelts/CdSSe Quantum Dots Nanocomposite

AU - Chong, Shen V.

AU - Suresh, Narayanaswamy

AU - Xia, James

AU - Al-Salim, Najeh

AU - Idriss, Hicham

PY - 2007/7/19

Y1 - 2007/7/19

N2 - This work presents the successful noncovalent attachment of similar to 5 nm diameter cadmium-sulfur-selenium (CdSSe) quantum dots on strips of anatase TiO2 nanobelts. The TiO2 nanobelts were hydrothermally synthesized from a strong alkaline solution and subsequently heat-treated to achieve the anatase phase. The self-assembled-monolayer (SAM) technique was employed to attach the quantum dots onto the nanobelts. Due to the hydrophobic nature of the quantum dots, the surface of the nanobelts was first self-assembled with a layer of hydrophobic organic layer before both mixtures were added together. The resulting nanostructure assembly and composition was confirmed via transmission-electron-microscopy (TEM) imaging, Raman spectroscopy, UV-visible absorption spectroscopy (UV-vis), and X-ray photoelectron spectroscopy (XPS). Both Raman and UV-vis spectroscopies indicate evidence of interactions between the quantum dots and nanobelts. The visible-light sensitizing effect of the quantum dots was demonstrated in photocurrent experiments.

AB - This work presents the successful noncovalent attachment of similar to 5 nm diameter cadmium-sulfur-selenium (CdSSe) quantum dots on strips of anatase TiO2 nanobelts. The TiO2 nanobelts were hydrothermally synthesized from a strong alkaline solution and subsequently heat-treated to achieve the anatase phase. The self-assembled-monolayer (SAM) technique was employed to attach the quantum dots onto the nanobelts. Due to the hydrophobic nature of the quantum dots, the surface of the nanobelts was first self-assembled with a layer of hydrophobic organic layer before both mixtures were added together. The resulting nanostructure assembly and composition was confirmed via transmission-electron-microscopy (TEM) imaging, Raman spectroscopy, UV-visible absorption spectroscopy (UV-vis), and X-ray photoelectron spectroscopy (XPS). Both Raman and UV-vis spectroscopies indicate evidence of interactions between the quantum dots and nanobelts. The visible-light sensitizing effect of the quantum dots was demonstrated in photocurrent experiments.

KW - photocatalytic properties

KW - nanocrystalline TIO2

KW - titanate nanotubes

KW - solar-cells

KW - nanowires

KW - electrodes

KW - raman

KW - CDSE

KW - films

KW - photosensitization

U2 - 10.1021/jp072579u

DO - 10.1021/jp072579u

M3 - Article

VL - 111

SP - 10389

EP - 10393

JO - The Journal of Physical Chemistry C

JF - The Journal of Physical Chemistry C

SN - 1932-7447

IS - 28

ER -