Figure 4. Set-ups of the experimental steps: Step 1: Evolution of nitrous fumes, Step 2: Irradiation with UV-light in the presence of the photocatalyst (three UV-flashlights), Step 3: Transfer of a gas portion into a vial filled with Griess reagent via a syringe (Pictures: Lisa Schnödewind).

From

Education for Sustainable Development and Experiments involving Titanium Dioxide

Julian Venzlaff, Kaltrina Kosumi, Diana Zeller, Claudia Bohrmann-Linde

World Journal of Chemical Education. 2023, 11(3), 80-86 doi:10.12691/wjce-11-3-10