[7p-S203-1~13] 17.1 Carbon nanotubes & other nanocarbon materials

1:00 PM - 1:15 PM JST(4:00 AM - 4:15 AM UTC)Presentation by Applicant for JSAP Young Scientists Presentation Award

[7p-S203-1] High sensitivity of CO₂ gas response by polymer-wrapped single-walled carbon nanotubes without the need for simi-metallic separation

〇(M2)Koshin Tanaka¹, Naoki Tanaka^1,2, Masafumi Inaba³, Tsuyohiko Fujigaya^1,2,4 (1.Grad. Sch. Eng., Kyushu Univ., 2.I2CNER, Kyushu Univ., 3.Grad. Sch. Inf. Sci. & Electr. Eng., Kyushu Univ., 4.CMS, Kyushu Univ.)

Keywords:

CO2 gas sensor,single-walled carbon nanotube,polymer wrrapped

Single-walled carbon nanotubes (SWCNTs) are promising materials for CO₂ sensing, however enhancing their sensitivity typically requires complex procedures such as the extraction of semiconducting SWCNTs. In this study, we demonstrated that SWCNTs wrapped with polybenzimidazole (PBI) significantly improved CO₂ response sensitivity without the need for semiconducting extraction. The surface structural analysis suggested that the enhanced sensitivity arose from the CO₂ affinity of the amine groups in PBI and the modulation of the electronic properties of SWCNTs.