Nitrogen adsorption measurements were done on a Belsorp Max-II instrument at 77 K. The samples were activated at 150°C prior to the measurement. The specific surface area was calculated by the BET method using BETSI. Thermogravimetric analysis (TGA) profiles were obtained using a TA Q-Series TGA Q500. The balance flow rate was 15 mL/min with nitrogen. The thermal stability profile was measured using 15 mL/min airflow and a ramp of 5°C per minute up to 800°C. Fourier-Transform Infrared (FTIR) spectra were collected using a PerkinElmer Frontier MIR/FIR spectrometer. Samples were pressed on a diamond window, and spectra were recorded between 4000 and 400 cm -1 at a resolution of 2 cm -1 .