. 2024 Jul 27;29(15):3543. doi: 10.3390/molecules29153543
© 2024 by the authors.
Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
Figure 1.
TEM images of SBA-15 and modified SBA-15 [23].