Shuting Wei, Yu Qi, Li Ma, Yongchun Liu, Guangke Li, Nan Sang, Sijin Liu and Yajun Liu
Environ. Sci.: Nano, 2020,7, 1633-1641
DOI:
10.1039/D0EN00281J,
Communication
We uncover that O3-induced ageing dynamically alters the surface O-functionalities of carbon black (CB) nanoparticles, a model of airborne particles. The consequent distinct bioreactivity and toxicity towards susceptible cells under low-dose exposure are largely attributed to the variant species of O-functionalities, thereby signifying the importance of the environmental ageing process in changing CB toxicity features.