Figure 5.
(a) Photo of absorption progress of CR with time by new 3D BN architecture. (b) UV-vis absorption spectra of the aqueous CR solution (110 mg L−1, 25 mL) in the presence of 3D BN architecture at different intervals, respectively. (c) Adsorption rates of the CR on 3D BN architecture. (d) Adsorption isotherms of CR on 3D BN architecture. The insets present the photographs of the 3D BN architecture with CR composites before (upper) and after (bottom) recovering by heating at 500°C for 2 h.