Figure 5. Reaction process of the gas evolution after adding concentrated hydrogen peroxide solution to a platinum nanoparticle dispersion.

From

Electrochemical Synthesis of Coin Metal Nanoparticles in School Chemistry Education

Elena von Hoff, Stefanie Waitz, Felix Kollenda, Thomas Waitz

World Journal of Chemical Education. 2018, 6(1), 72-77 doi:10.12691/wjce-6-1-11