Fig. 2. (a) Photoluminescence spectra of prepared composites with an excitation wavelength of 320 nm, (b) UV-vis diffuse reflectance spectra of BUN-15, BiOBr, and UiO-66-NH2; inset shows the optical absorption edges, and (c) N2 adsorption–desorption BET surface area and BJH pore size of BUN-15 composite. (d) Transient photocurrent spectra of BiOBr, UiO-66-NH2, BUN-15.
