ROS evaluation for series of CNTs using the ESR method and the effects of CNT morphology

S. Tsuruoka, K. Takeuchi, K. Koyama, Kazunori Fujisawa, H. Matsumoto, N. Saito, Y. Usui, D. W. Porter, V. Castranova, M. Endo

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

Abstract

Carbon nanotubes (CNTs) are becoming important materials in industry. It is a concern that CNTs may induce carcinogenic responses through pulmonary exposure. It has been recently reported that CNTs scavenge radical oxygen species (ROS) depending on their morphology. ROS production has been utilized for toxicological evaluations. The present work specifically investigates ROS scavenging capabilities using the series of CNTs and their derivatives with surface modifications. Those ROS scavenging properties were measured by ESR with 5, 5-Dimethyl-1-pyrroline N-oxide (DMPO). Highly crystallized, mechanically chopped, and mechanically de-bulked CNTs were evaluated. Furthermore, their surface modification by nitric acid and ozone was compared with untreated CNTs.

Original languageEnglish (US)
Title of host publicationTechnical Proceedings of the 2013 NSTI Nanotechnology Conference and Expo, NSTI-Nanotech 2013
Pages449-452
Number of pages4
Volume3
StatePublished - Aug 9 2013
EventNanotechnology 2013: Bio Sensors, Instruments, Medical, Environment and Energy - 2013 NSTI Nanotechnology Conference and Expo, NSTI-Nanotech 2013 - Washington, DC, United States
Duration: May 12 2013May 16 2013

Other

OtherNanotechnology 2013: Bio Sensors, Instruments, Medical, Environment and Energy - 2013 NSTI Nanotechnology Conference and Expo, NSTI-Nanotech 2013
CountryUnited States
CityWashington, DC
Period5/12/135/16/13

All Science Journal Classification (ASJC) codes

  • Biotechnology

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