Figure 6. SEM image of an Ag SPE before (left) and after electrochemical activation (right). (Thanks to Nadine Schnabel, Institute for Physical Chemistry, University of Stuttgart)

From

Methylene Blue - New Chemistry Experiments for University Education

P. Wagler, J. Scheible, A. Habekost

World Journal of Chemical Education. 2022, 10(4), 137-148 doi:10.12691/wjce-10-4-3