From illite/smectite clay to mesoporous silicate adsorbent for efficient removal of chlortetracycline from water

Preparation of magnesium silicate/carbon composite for adsorption of rhodamine B

“…19 Silicates have the advantages of rich content, eco-friendliness and inexpensiveness and are suitable for use as adsorbents. [20][21][22] Magnesium silicates can potentially adsorb cationic dyes because of their large surface area and surfaces rich with hydroxyl groups. 23,24 The research community has recently become interested in composite materials since they oen possess excellent properties, which are superior to the virgin component they are made of.…”

Carbon modified Ti(I/S) composites and their photocatalytic degradation of rhodamine B

“…The functional groups of all C-Ti(I/S) composites did not change, indicating that there were no new functional groups that were formed between C and Ti(I/S). 32 Among them, the characteristic peak of 3622 cm À1 is assigned to the stretching vibration of Al-O-Si-O-H, 33 the peak at 1629 cm À1 is attributed to the bending vibration of the H-O-H bond, 16 the absorption peak at 1032 cm À1 , 914 cm À1 and 798 cm À1 correspond to the stretching vibration of the Si-O-Si, Si-O, Si-O-Al bond, 33,34 and the peak at 470 cm À1 is ascribed to the Si-O-Fe band. 19 The intensity of the peak at 1032 cm À1 was increased, which means that either a possible interaction occurred between the C and Ti(I/S) or may be due to the bonding that occurred during the hydrothermal process of C and Ti(I/S).…”

Important Roles of Water Clusters Confined in a Nanospace as Revealed by a Synchrotron X-ray Diffraction Study

“…The time-course profile of the adsorbed amount of caffein is shown in Figure S8. Governed by pseudo-second-order kinetics, the adsorption equilibrium was reached after ∼3 h. − The pseudo-second-order model has been fitted to the kinetic data of diverse systems involving (ad)­sorption on 2D materials. − From the time-course profile we calculated the effective diffusion coefficient D = 2 x 2 / t f , where x is the thickness (size) of the adsorbents and t f is the completion time of the adsorption. Although the D of caffeine intercalation was not precisely determined, its order of magnitude was estimated as 10 –12 m 2 /s referring to intercalation of an organic molecule into a hydrated smectite with x = 65 ± 20 μm .…”