Fig. 6

Pyro-catalysis of 2D-BP for dye decomposition. a The pyro-catalytic variation of the absorption spectra of RhB dye solution (5 mg L−1) with different thermal cycles between 15 and 65 °C. b The decomposition ratio as a function of thermal cycles. The inset shows the photos of the pyro-catalytically-decomposed RhB dye solution of 2D few-layer black phosphorene (2D-BP) at different stages