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.
SEM images of some representative noble metal aerogels. The aerogels in (a–d) were prepared via strategy (I); the aerogels in (e) and (f) were obtained by strategy (II). The images in (c) and (d) are reproduced from ref (21). Copyright 2014 American Chemical Society. The image in (e) is reproduced with permission from ref (18). Copyright 2012 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.
