Effective adsorptive removal of sulfamethoxazole (SMX) from aqueous solution by ZIF-8 derived adsorbent ZC-0.5

Fabrication of Size-Controlled MOF-74-Derived Porous Nanospheres toward Efficient Water Treatment

“…When calcined above 600 °C, the diffraction peak of a small angle gradually disappears, and the MOF-74 skeleton collapses, corresponding to (200), (220), (311), and (222) crystal planes of MgO at 2θ = 42.9°, 62.3°, 74.6°, and 78.5°, respectively . For Mg–N–C600/700/800, it can be seen that the carbonized sample shows a wide diffraction peak at 2θ = 37–43°, corresponding to the graphite-like (002) and (101) crystal planes, and the large peak width range indicates that the degree of graphitization is relatively dispersed . The FTIR spectra of Mg–N–CX cover the wavelength range of 4000–500 cm –1 (Figure S4).…”

“…When the calcination temperature is 900 °C, the number of surface faces of the material reaches the maximum and the distribution is more uniform. However, as the calcination temperature rises to 1000 °C, the specific surface area decreases, which is because the C element will disappear at higher temperatures, and 1000 °C will destroy the frame and further cause the collapse of the composite skeleton . Therefore, the temperature plays a crucial role in determining the morphology of such composites.…”

“…40 For Mg−N− C600/700/800, it can be seen that the carbonized sample shows a wide diffraction peak at 2θ = 37−43°, corresponding to the graphite-like (002) and (101) crystal planes, and the large peak width range indicates that the degree of graphitization is relatively dispersed. 42 The FTIR spectra of Mg−N−CX cover the wavelength range of 4000−500 cm −1 (Figure S4). It can be clearly seen that the derived carbon material is not significantly different from the previous one, which suggests that although the material is calcined by pyrolysis, the functional groups of the materials themselves do not change.…”