Triazine- and Heptazine-Based Carbon Nitrides: Toxicity Qi Dong, Naziah Mohamad Latiff, Vlastimil Mazánek, Nur Farhanah Rosli, Hui Ling Chia, Zdeněk Sofer, Martin Pumera* ACS Applied Nano Materials 2018, 1(9), 4442-4449