Fig. 2

Wettability, dispersion and photodegradation resistance of NMs. (A-D) Contact angles of water, CDs, SiO₂ and SiO₂@CDs on tobacco at 100 mg/L; (E) Spraying simulation of water, CDs, SiO₂, and SiO₂@CDs on tobacco at 100 mg/L; (F) The surface tension measurements of water, CDs, SiO₂, and SiO₂@CDs; (G) The TGA curves of CDs, SiO₂, and SiO₂@CDs; The photostability of CDs and SiO₂@CDs under 365 nm (H) and 450 nm (I) excitation