Efficient one-pot solvothermal synthesis of lanthanum-iron oxide and its application in tenofovir adsorption
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Abstract
A novel magnetic lanthanum-iron oxide composites have been synthesized using a one-pot method. The proposed approach simplifies the synthesis process by eliminating traditional requirements such as pH adjustment and high-temperature calcination, resulting in a more streamlined procedure and production of a magnetic material. The effects of the Fe-to-La ratio, reaction time, and reaction temperature on the properties and adsorption performance of the lanthanum-iron oxide composites were investigated. The synthesized composites were characterized by SEM, XRD, VSM, FTIR, BET, TGA, and XPS, which indicated that the samples comprised of randomly oriented particles with sizes ranging from 20 to 200 nm, it possessed excellent crystallinity, magnetic responsiveness and thermal stability. Additionally, this study also explored the application of lanthanum-iron oxide in adsorbing tenofovir ((R)-9-(2-phosphonomethoxypropyl)adenine, PMPA), with the maximum adsorption capacity of 34.06 mg/g, under the conditions of adsorbent dosage=0.9 g/L, pH=4, C=50 mg/L, and T=25 °C. The prepared lanthanum-iron oxide was simple to prepare and enabled rapid separation, which was beneficial to practical applications.
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National Natural Science Foundation of China
Grant numbers 22106051
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