Heterogeneous activation of peroxymonosulfate by cobalt-doped MIL-53(Al) for efficient tetracycline degradation in water: Coexistence of radical and non-radical reactions

Adsorption and Desorption of Amoxicillin Antibiotic from Water Matrices Using an Effective and Recyclable MIL-53(Al) Metal–Organic Framework Adsorbent

“…The peak at 2θ = 8.8°corresponds to the (110) reflection, while the rise at 2θ = 17.7°mainly arises from the (211) and ( 220) reflections merged into a single peak. 49,52 This result that the MIL-53(Al) is crystalline and the average size of crystals is small is in a good agreement with the FE-SEM and TEM result. According to EDS analysis (Figure 4), the MIL-53(Al) MOF includes carbon (C), oxygen (O), and aluminum (Al) elements.…”

“…The FE-SEM and TEM analyses (Figure 2) reveal that the average size of MIL-53(Al) is 41 ± 10 nm and is found as small crystals, small rod-shaped, filamentous, and rod long crystals, similar to previous reports. 49,50 The XRD pattern of MIL-53(Al) (Figure 3) shows the diffraction peak of MIL-53(Al) at about 10°, indicating that MIL-53(Al) has been synthesized successfully. The crystal size (D s ) of MIL-53(Al) was evaluated using the Debye−Scherrer equation (eq 9).…”

“…It determines that the MIL-53(Al) contained abundant micropores. 48,49 The PSD diagram of the synthesized MIL-53(Al) (Figure 1b) showed that the pore diameter mainly accumulated in the range of 0−10 nm. The specific surface area, total pore volume (P/P 0 = 0.990), mean pore diameter, and parameter C from the BET method are 1288.0 m 2 g −1 , 1.1 cm 3 g −1 , 3.3 nm, and 6929.2, respectively.…”

Peroxymonosulfate activation by tea residue biochar loaded with Fe3O4 for the degradation of tetracycline hydrochloride: performance and reaction mechanism

“…8a , the degradation rate of TCH in the blank control group reached 91.98% after 60 minutes, while the degradation rate of TCH was inhibited to varying degrees after adding the quencher, indicating that all four free radicals exist in the reaction system and play a role in the degradation process effect. 59 Among them, the most obvious decline in the degradation rate of TCH was in the FFA- 1 O 2 group ( Fig. 8b ); within 60 minutes of the reaction, the degradation rate of TCH in the FFA- 1 O 2 group was always the lowest, and the reaction speed was the slowest.…”

Progress in the design of nanoporous adsorbent materials containing transition metals for the removal of contaminants of emerging concern

“…This encompasses a wide range of strategies, from the addition of specific surface chemical species that serve as unique uptake sites to the preparation of composites that display multi-functional character. For instance, the inclusion of transition metals as the material active sites or structural element in catalysts [24][25][26][27][28][29][30][31][32], functionalization of membranes [33][34][35][36][37][38], or adsorbents [39][40][41][42]. Some of the enhancements in chemical activity are principally due to the capacity of the metal d subshell to form specific bonds (e.g.…”