Adsorption Of Quinolones Antibiotics And Catalytic Performance As Solid Acids Of Hollow Nanospheres And Microporous Polymers

Antibiotics pollution is a kind of commonly used drugs of potential, endangering body health and ecological effect. Compared with the traditional water treatment method, adsorption method is one of the most economic and effective to eliminate the antibiotics. Designing and developing an adsorbent for effective removal of antibiotics pollutant will become a scientific research and academic challenges, and practical application significance. This paper put in practice around the synthesis of functionalized organic-inorganic hybrid materials and its adsorption for antibiotics, and the derivative application of biomass synthesis. It also examines that the difference of different organic functional groups on antibiotics adsorption strength and the influence of network structure of new typical microporous polymer on the adsorption performance of antibiotics.The clickable hollow nanospheres (HNSs) were synthesized by the co-condensation and assembling of tetramethoxysilane (TMOS) and 3-azidopropyltrimethoxysilane (AzPTMS) around F127 single micelle template. The clicked HNSs showed excellent adsorption capacity and recyclability for antibiotics (ciprofloxacin hydrochloride). Results show that the adsorption effect of phenyl modified click HNS is best, mainly due to electrostatic effect and ?-? conjugation effect between adsorbate and adsorbent.These polymers can be made through internal and external cross-linker:(?) the external one must be completed with the help of external electrophiles FDA. At the same time, FeCl3 as catalyst is also necessary. (?) Without the presence of crosslinking agent, the catalyst AlCl3 can initiate the internal hyper-crosslinking. Notably, three kinds of microporous polymers reported, such as KAP-Ph-CH2, SMP-PhPh3, and SMP-PhPh3-SO3H, show stronger adsorption capacity than active carbon. The kinetics of adsorption fits pseudo-second-order model perfectly. According to the tested results of different pH and ionic strength, the existence of microporous and network structure can have an important effect on the adsorption capacity.Facile synthesis of hybrid solid acids with finely engineered surface properties was successfully realized via sulfonation of polystyrene (PS) dispersed in nanopores of silica hollow nanosphere modified with different organic group. It was found that octyl or perfluorinated octyl could efficiently increase the surface hydrophobicity of the hybrid solid acids. Benefited from the facile adjustability of the surface properties, the catalytic performance of the solid acids could be readily improved in both the esterification of lauric acid with ethanol and the transterification between tripalmitin and methanol. The solid acid modified with perfluorinated octyl shows even higher activity than liquid sulfuric acid in the transesterification reaction. The octyl group incorporated in the silica shell could also prevent the leaching of PS-SO3H during the catalytic process.