Aspartic Acid- and Glycine-Functionalized Mesoporous Silica as an Effective Adsorbent to Remove Methylene Blue from Contaminated Water

In this work, aspartic acid- and glycine-functionalized mesoporous silica nanoparticles (Asp-MSNs Gly-MSNs) were successfully prepared applied as adsorbents for removal of methylene blue (MB) from contaminated water. The structure the fabricated nanomaterials was confirmed by nitrogen adsorption/desorption with specific surface area ca. 700 m2/g pore volume 0.9 cm3/g both Asp-MSNs Gly-MSNs. average size nanoadsorbents estimated to be 290 nm characterized scanning electron microscopy (SEM) transmission microscope (TEM). physical chemical properties Gly-MSNs also Fourier transform infrared (FTIR) spectroscopy, zeta potential, elemental analysis. exhibited good adsorption performance cationic organic dyes (MB). equilibrium capacity found 55 mg·g−1 43 mg·g−1, respectively, under optimal conditions. Langmuir model pseudo-second-order equation correlation isotherm kinetic data MB, respectively.