fig2
Figure 2. (A) FT-IR spectra of ZS and (B) as-prepared composites; (C) N2 adsorption/desorption isotherms; (D) XRD spectra of as-prepared catalysts. ZS: Zr-SBA-15; PDA: polydopamine; FT-IR: Fourier transform infrared spectroscopy; XRD: X-ray diffraction.
