Capturing functional two-dimensional nanosheets from sandwich-structure vermiculite for cancer theranostics.

ABSTRACT: Clay-based nanomaterials, especially 2:1 aluminosilicates such as vermiculite, biotite, and illite, have demonstrated great potential in various fields. However, their characteristic sandwiched structures and the lack of effective methods to exfoliate two-dimensional (2D) functional core layers (FCLs) greatly limit their future applications. Herein, we present a universal wet-chemical exfoliation method based on alkali etching that can intelligently "capture" the ultrathin and biocompatible FCLs (MgO and Fe₂O₃) sandwiched between two identical tetrahedral layers (SiO₂ and Al₂O₃) from vermiculite. Without the sandwich structures that shielded their active sites, the obtained FCL nanosheets (NSs) exhibit a tunable and appropriate electro

SUBMITTER: Ji X 

PROVIDER: S-EPMC7892577 | biostudies-literature | 2021 Feb

REPOSITORIES: biostudies-literature