Here, a novel joint chemo/photothermal/chemodynamic therapy was developed using a pH/GSH/photo triple-responsive 2D-covalent organic framework (COFs) drug carriers for passive target treatment of tumor with extraordinarily high efficiency. The well-designed...
1The easily reproducible magnetic carbon nanoadsorbents (MPSN) derived from 2 polystyrene (PS) by direct calcination of the functionalized PS with the iron salt are 3 employed for effective tetrabromobisphenol A (TBBPA) adsorption. Batch adsorption 4 tests indicate that MPSN exhibited high adsorption affinity to aqueous TBBPA with a 5 maximum adsorption capacity of 117.00 mg g -1 . The TBBPA adsorption kinetics by the 6 MPSN is found to obey the pseudo-second-order behavior with a calculated room 7 temperature initial adsorption rate of 42.871 g mg -1 min -1 for the solution with an initial 8 TBBPA concentration of 4.0 mg L -1 and pH value of 8.0. A monolayer adsorption for 9 Langmuir isotherm model is well fitted rather than the multilayer adsorption of 10 Freundlich isotherm model. The calculated thermodynamic parameters suggest that the 11 TBBPA adsorption on MPSN is spontaneous and exothermic. The optimal pH value for 12 TBBPA adsorption on MPSN is around 8.0 with the MPSN dose of 30.0 mg L -1 and 13 contact time of 30 min under sonication at 298 K. The TBBPA adsorption performance by 14 MPSN is strongly influenced by the presence of humic acid. The prepared MPSN retains 15 around 85% of Cr(VI) adsorption capacity after 5 cycles and exhibits a good reusability. 16 The explored adsorption mechanism by Raman and Fourier transform infrared 17 spectroscopy (FT-IR) spectra suggests that the C-O-Fe bond existed on MPSN is 18 responsible for the superior TBBPA adsorption performance. This work provide a 19 promising magnetic adsorbents for TBBPA wastewater treatment as well as a new 20 strategy for recycle and reuse the polymer plastic waste.
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