Light-stimulated composition conversion in TiO2-based nanofibers

Ming Jin, Xintong Zhang, Shunsuke Nishimoto, Zhaoyue Liu, Donald A. Tryk, Alexei V. Emeline, Taketoshi Murakami, Akira Fujishima

Research output: Contribution to journalArticle

95 Citations (Scopus)

Abstract

Silver-TiO2 nanofibers (Ag/Ti = 1/50) were fabricated by the electrospinning method, followed by heat treatment at 200°C and calcination at 550°C. The electrospinning solution was comprised of AgNO3 and titanium tetraisopropoxide (TTIP) with polyvinylpyrrolidone (PVP). Alternating irradiation of the silver-TiO2 nanofibers with ultraviolet and visible light can interconvert the silver species on the TiO2-based nanofibers to yield Ag metal and Ag2O, respectively, and this process has been characterized by UV-visible spectra, TEM, XRD, and XPS. The interconversion process can be rationalized in terms of the photoreduction of Ag2O by TiO2 and the oxidization of Ag by visible light. Acetaldehyde photodecomposition measurements indicate that Ag2O has better mineralization ability than Ag0 in this kind of silver-TiO2 nanofiber photocatalytic system. The photoinduced conversion of composition on TiO2-based nanofibers may find applications in photocatalysis, antibacterial technology, and other areas.

Original languageEnglish
Pages (from-to)658-665
Number of pages8
JournalJournal of Physical Chemistry C
Volume111
Issue number2
DOIs
Publication statusPublished - Jan 18 2007
Externally publishedYes

Fingerprint

Nanofibers
Silver
silver
Chemical analysis
Electrospinning
photodecomposition
acetaldehyde
Povidone
visible spectrum
Acetaldehyde
ultraviolet radiation
photochemical reactions
roasting
Photocatalysis
heat treatment
titanium
Calcination
X ray photoelectron spectroscopy
Titanium
transmission electron microscopy

ASJC Scopus subject areas

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

Cite this

Jin, M., Zhang, X., Nishimoto, S., Liu, Z., Tryk, D. A., Emeline, A. V., ... Fujishima, A. (2007). Light-stimulated composition conversion in TiO2-based nanofibers. Journal of Physical Chemistry C, 111(2), 658-665. https://doi.org/10.1021/jp065590n

Light-stimulated composition conversion in TiO2-based nanofibers. / Jin, Ming; Zhang, Xintong; Nishimoto, Shunsuke; Liu, Zhaoyue; Tryk, Donald A.; Emeline, Alexei V.; Murakami, Taketoshi; Fujishima, Akira.

In: Journal of Physical Chemistry C, Vol. 111, No. 2, 18.01.2007, p. 658-665.

Research output: Contribution to journalArticle

Jin, M, Zhang, X, Nishimoto, S, Liu, Z, Tryk, DA, Emeline, AV, Murakami, T & Fujishima, A 2007, 'Light-stimulated composition conversion in TiO2-based nanofibers', Journal of Physical Chemistry C, vol. 111, no. 2, pp. 658-665. https://doi.org/10.1021/jp065590n
Jin, Ming ; Zhang, Xintong ; Nishimoto, Shunsuke ; Liu, Zhaoyue ; Tryk, Donald A. ; Emeline, Alexei V. ; Murakami, Taketoshi ; Fujishima, Akira. / Light-stimulated composition conversion in TiO2-based nanofibers. In: Journal of Physical Chemistry C. 2007 ; Vol. 111, No. 2. pp. 658-665.
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