Figure 1

SEM images of P. denitrificans cells in the absence (A) and presence of 50 mg/L non-modified SWNT (B) and carboxyl-modified SWNT (C) after 24 h of exposure.

SEM images of P. denitrificans cells in the absence (A) and presence of 50 mg/L non-modified SWNT (B) and carboxyl-modified SWNT (C) after 24 h of exposure.