Figure 1.
(a) Schematic representation of the structure of a halloysite with the indication of the molecular geometry around Al and Si centers specific for each layer and (b) TEM micrograph of a HNT sample (inset: HNT lumen diameter distribution).
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.