Figure 4.
In vivo clearance of elemental Bi and Se and oxidation/dissolution of Bi2Se3 nanosheets. Time-depnedent decrease of Bi concentratoin (a) and Se concentration (b) caused by clearance effects. Digital image (c) and XRD spectrum of the oxidized Bi2Se3 nanosheets after exposure to air for 30 days (d). (e) Illustration showing dissolution and oxidation of the Bi2Se3 nanosheets after intraperitoneal injection. Reprinted with permission from ref. 125. Copyright 2013, John Wiley & Sons, Inc.