Preparation of polyacrylic acid-b-polystyrene covered Fe/Ni nanoparticles and application
ZHAN Cong, LIN Kuang-fei, LU Qiang, LI Can, LIU Fu-wen, HUANG Kai
State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, School of Resources and Environmental Engineering, East China University of Science and Technology, Shanghai 200237, China
Abstract: Polyacrylic acid-b-polystyrene covered Fe/Ni nanoparticles (PAA-b-PS-Fe/Ni),a new material,is developed and evaluated for the selective dechlorination of 1,1,1-trichloroethane (1,1,1-TCA) in the presence of potential interferents.The sizes of PAA-b-PS coated Fe/Ni bimetallic nanoparticles are averaged approximately at 50 nm because PAA-b-PS can prevent zero-valent iron from agglomeration.The dechlorination reaction reaches balance within 240 min while the removal rate of 200 mg·L-1 1,1,1-TCA achieves the best,87.5% under a 1.0 g·L-1 Fe/Ni (Ni/Fe=2%) and 0.5 g·L-1 PAA-b-PS-coated concentration.The removal efficiency of 1,1,1-TCA by PAA-b-PS-Fe/Ni is averaged at around 88%,regardless of various common inorganic anions (NO3-,HCO3- and SO42-) at different concentrations.However,humic acid has a great influence on the degradation of 1,1,1-TCA.In conclusion,PAA-b-PS-covered Fe/Ni nanoparticles have selectivity and are highly effective for the degradation of 1,1,1-TCA from groundwater.
詹聪, 林匡飞, 陆强, 李灿, 刘馥雯, 黄凯. PAA-b-PS包埋纳米Fe/Ni材料的制备及其应用研究[J]. 现代化工, 2019, 39(11): 84-88.
ZHAN Cong, LIN Kuang-fei, LU Qiang, LI Can, LIU Fu-wen, HUANG Kai. Preparation of polyacrylic acid-b-polystyrene covered Fe/Ni nanoparticles and application. Modern Chemical Industry, 2019, 39(11): 84-88.
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