Pore-size control of carbon nanospace with ultrasonic irradiation

T. Ohkubo, R. Hori, K. Tsuchiya, H. Sakai, M. Abe

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

In this study, we examined the micropore-size control on activated carbons by ultrasonic irradiation with various conditions. Pitch-based activated carbon fiber (ACF) was used for the sample having relatively uniform micropores whose micropore size was determined as 1.15 nm from the measurement of nitrogen adsorption isotherm at 77 K and high-resolution αs-plot analysis. Also, the ultrasonic irradiations to ACF were carried out in the water bath with various irradiation times and at three irradiation frequencies (40 kHz, 200 kHz, and 1 MHz). The results indicate that we can decrease the pore volume and average pore widths of ACFs with longer irradiation time. Also, we examined the dependence of ultrasonic frequencies on micropore-size control. The average pore width of ACF irradiated by 40 kHz was decreased over 10% from the original one. This result suggests that the nanospaces of ACF are collapsed as a result of sonication. Besides, larger pores, are more easily collapsed selectively.

Original languageEnglish
Title of host publication2006 NSTI Nanotechnology Conference and Trade Show - NSTI Nanotech 2006 Technical Proceedings
Pages162-165
Number of pages4
Publication statusPublished - Dec 8 2006
Externally publishedYes
Event2006 NSTI Nanotechnology Conference and Trade Show - NSTI Nanotech 2006 Technical Proceedings - Boston, MA, United States
Duration: May 7 2006May 11 2006

Publication series

Name2006 NSTI Nanotechnology Conference and Trade Show - NSTI Nanotech 2006 Technical Proceedings
Volume1

Other

Other2006 NSTI Nanotechnology Conference and Trade Show - NSTI Nanotech 2006 Technical Proceedings
CountryUnited States
CityBoston, MA
Period5/7/065/11/06

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Keywords

  • Activated carbon fiber
  • Micropore
  • Nitrogen adsorption isotherm
  • Ultrasonic irradiation

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Ohkubo, T., Hori, R., Tsuchiya, K., Sakai, H., & Abe, M. (2006). Pore-size control of carbon nanospace with ultrasonic irradiation. In 2006 NSTI Nanotechnology Conference and Trade Show - NSTI Nanotech 2006 Technical Proceedings (pp. 162-165). (2006 NSTI Nanotechnology Conference and Trade Show - NSTI Nanotech 2006 Technical Proceedings; Vol. 1).