Ag nanoparticle sheet as a marker of lateral remote photocatalytic reactions

Takeshi Nagahiro, Kenichi Ishibashi, Yasuo Kimura, Michio Niwano, Tomohiro Hayashi, Yasuhiro Ikezoe, Masahiko Hara, Tetsu Tatsuma, Kaoru Tamada

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

The lateral remote photocatalytic activity of TiO2 nanotubes fabricated by anodic oxidation, was characterized by use of a ‘silver nanosheet’ as a marker. The silver nanosheet is a two-dimensional crystalline film composed of myristate-capped silver nanoparticles (d = 5 nm), which has a sharp localized plasmon absorption band at λmax = 470 nm. A quartz substrate was coated with TiO2 nanotubes to a coverage of 10% and then covered with a silver nanosheet. Upon UV irradiation a rapid decrease in the intensity of the 470 nm plasmon band and an increase in the long-wavelength absorption (550–1000 nm) band were clearly confirmed, indicating fusion of the nanoparticles due to decomposition of the myristate capping agent. Surface morphology measured by high-resolution scanning electron microscopy (SEM) and atomic force microscopy (AFM) revealed the decomposition and fusion of silver nanoparticles even in regions of the surface a micron away from the TiO2 nanotubes.

Original languageEnglish
Pages (from-to)107-113
Number of pages7
JournalNanoscale
Volume2
Issue number1
DOIs
Publication statusPublished - Jan 8 2010
Externally publishedYes

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Silver
Nanosheets
Nanoparticles
Nanotubes
Myristic Acid
Fusion reactions
Decomposition
Quartz
High resolution electron microscopy
Anodic oxidation
Surface morphology
Absorption spectra
Atomic force microscopy
Irradiation
Crystalline materials
Wavelength
Scanning electron microscopy
Substrates

All Science Journal Classification (ASJC) codes

  • Materials Science(all)

Cite this

Nagahiro, T., Ishibashi, K., Kimura, Y., Niwano, M., Hayashi, T., Ikezoe, Y., ... Tamada, K. (2010). Ag nanoparticle sheet as a marker of lateral remote photocatalytic reactions. Nanoscale, 2(1), 107-113. https://doi.org/10.1039/b9nr00240e

Ag nanoparticle sheet as a marker of lateral remote photocatalytic reactions. / Nagahiro, Takeshi; Ishibashi, Kenichi; Kimura, Yasuo; Niwano, Michio; Hayashi, Tomohiro; Ikezoe, Yasuhiro; Hara, Masahiko; Tatsuma, Tetsu; Tamada, Kaoru.

In: Nanoscale, Vol. 2, No. 1, 08.01.2010, p. 107-113.

Research output: Contribution to journalArticle

Nagahiro, T, Ishibashi, K, Kimura, Y, Niwano, M, Hayashi, T, Ikezoe, Y, Hara, M, Tatsuma, T & Tamada, K 2010, 'Ag nanoparticle sheet as a marker of lateral remote photocatalytic reactions', Nanoscale, vol. 2, no. 1, pp. 107-113. https://doi.org/10.1039/b9nr00240e
Nagahiro T, Ishibashi K, Kimura Y, Niwano M, Hayashi T, Ikezoe Y et al. Ag nanoparticle sheet as a marker of lateral remote photocatalytic reactions. Nanoscale. 2010 Jan 8;2(1):107-113. https://doi.org/10.1039/b9nr00240e
Nagahiro, Takeshi ; Ishibashi, Kenichi ; Kimura, Yasuo ; Niwano, Michio ; Hayashi, Tomohiro ; Ikezoe, Yasuhiro ; Hara, Masahiko ; Tatsuma, Tetsu ; Tamada, Kaoru. / Ag nanoparticle sheet as a marker of lateral remote photocatalytic reactions. In: Nanoscale. 2010 ; Vol. 2, No. 1. pp. 107-113.
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