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 language | English |
|---|---|
| Title of host publication | 2006 NSTI Nanotechnology Conference and Trade Show - NSTI Nanotech 2006 Technical Proceedings |
| Pages | 162-165 |
| Number of pages | 4 |
| Volume | 1 |
| Publication status | Published - 2006 |
| Externally published | Yes |
| Event | 2006 NSTI Nanotechnology Conference and Trade Show - NSTI Nanotech 2006 Technical Proceedings - Boston, MA, United States Duration: May 7 2006 → May 11 2006 |
Other
| Other | 2006 NSTI Nanotechnology Conference and Trade Show - NSTI Nanotech 2006 Technical Proceedings |
|---|---|
| Country | United States |
| City | Boston, MA |
| Period | 5/7/06 → 5/11/06 |
Fingerprint
Keywords
- Activated carbon fiber
- Micropore
- Nitrogen adsorption isotherm
- Ultrasonic irradiation
ASJC Scopus subject areas
- Engineering(all)
Cite this
Pore-size control of carbon nanospace with ultrasonic irradiation. / Ohkubo, Takahiro; Hori, R.; Tsuchiya, K.; Sakai, H.; Abe, M.
2006 NSTI Nanotechnology Conference and Trade Show - NSTI Nanotech 2006 Technical Proceedings. Vol. 1 2006. p. 162-165.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Pore-size control of carbon nanospace with ultrasonic irradiation
AU - Ohkubo, Takahiro
AU - Hori, R.
AU - Tsuchiya, K.
AU - Sakai, H.
AU - Abe, M.
PY - 2006
Y1 - 2006
N2 - 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.
AB - 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.
KW - Activated carbon fiber
KW - Micropore
KW - Nitrogen adsorption isotherm
KW - Ultrasonic irradiation
UR - http://www.scopus.com/inward/record.url?scp=33845228122&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=33845228122&partnerID=8YFLogxK
M3 - Conference contribution
SN - 0976798565
SN - 9780976798569
VL - 1
SP - 162
EP - 165
BT - 2006 NSTI Nanotechnology Conference and Trade Show - NSTI Nanotech 2006 Technical Proceedings
ER -