fig2

Figure 2. (A) FT-IR spectra of BTC and COP_MCT-Co; (B) The corresponding pore distribution of COP_MCT-Co-900; (C) N₂ adsorption and desorption isotherm of COP_MCT-Co-900; (D) Raman spectra of COP_MCT-Co-900; XRD spectra of (E) COP_MCT-Co and (F) COP_MCT-Co-900. FT-IR: Fourier transform infrared spectroscopy; BTC: Benzene-1,2,4,5-tetracarbonitrile; COP: covalent organic polymer; XRD: X-ray diffractometer.