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(a) Photo of absorption progressof BY with time by new 3D BN architecture. (b) UV-vis absorption spectra of the aqueous BY solution (90 mg L−1, 25 mL) in the presence of 3D BN architecture at different intervals, respectively. (c) Adsorption rates of the BY on 3D BN architecture. (d) Adsorption isotherms of BY on 3D BN architecture. The insets present the photographs of the 3D BN architecture with BY composites before (upper) and after (bottom) recovering by heating at 500°C for 2 h.
