文献名： Novel Fe 3 O 4–poly (methacryloxyethyltrimethyl ammonium chloride) adsorbent for the ultrafast and efficient removal of anionic dyes

作者 ： Bo Zhou ^a , Yuling Tang ^a , Liming Zhao ^a , Lijun Guo ^a and Jianfei Zhou

^a National Engineering Research Center of Clean Technology in Leather Industry, Sichuan University, Chengdu, 610065, China.

^b Key Laboratory of Leather Chemistry and Engineering (Sichuan University), Ministry of Education, Chengdu, 610065, P. R. China

摘要： The removal of anionic dyes from wastewater has attracted global concern. In this work, a novel Fe ₃ O ₄ –poly(methacryloxyethyltrimethyl ammonium chloride) (Fe ₃ O ₄ –pDMC) adsorbent for the efficient removal of anionic dyes from wastewater was successfully synthesized by grafting methacryloxyethyltrimethyl ammonium chloride (DMC) on the surfaces of Fe ₃ O ₄ . Various characterization analyses confirmed that the obtained Fe ₃ O ₄ –pDMC possessed numerous functional groups on its surfaces and retained good magnetic separation properties. Fe ₃ O ₄ –pDMC showed ultrafast removal for acid orange 7 (AO7, 58.6%, 1 min) and direct blue 15 (DB15, 98.1%, 1 min), and the maximum adsorption capacity was high (266.8 and 336.5 mg g ^{− 1} for AO7 and DB15, respectively). In addition, the adsorption process was in accordance with pseudo-second-order kinetics and the Langmuir isotherm. The mechanism underlying the adsorption of Fe ₃ O ₄ –pDMC on anionic dyes was mainly dependent on electrostatic interaction. This study illustrated that Fe ₃ O ₄ –pDMC has great potential applications as an environmentally friendly, desirable adsorbent for the efficient removal of anionic dyes from wastewater.

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