Fabrication of CeO2 Micro-Nanofibers by Electrospinning and Its Fluoride Removal Performance

Abstract

Abstract: Cerium nitrate/polyacrylonitrile (Ce(NO₃)₃/PAN) fibers were synthesized by electrospinning using PAN as template, Ce(NO₃)₃·6H₂O as raw material. Cerium oxide (CeO₂) micro-nanofibers were obtained by calcination in air. The morphology and structure of CeO₂ micro-nanofibers were characterized by XRD, BET and SEM. The fluoride removal performance of CeO₂ micro-nanofibers in aqueous solution was investigated by static experimental data. The influences of solution pH value, initial F^- concentration and coexistent anions on the adsorption performance were studied. The results show that the adsorption capacity of CeO₂ micro-nanofibers for F^- is the best at pH=3, and it increases as F^- concentration increases. The adsorption isotherm of F^- on CeO₂ micro-nanofibers fits the Langmuir model, and the second-order kinetics can well describe the adsorption process of F^- on CeO₂ micro-nanofibers. CeO₂ micro-nanofibers have excellent fluoride removal performance, which can provide a theoretical reference for its practical application.

Key words: CeO₂, defluoridation, micro-nanofiber, electrospinning, thermodynamic, kinetics, adsorption, adsorption isotherm

CLC Number:

TQ424
X703

JIAN Shaoju, CHENG Yiting, HONG Huifang, XIAO Jinyu, LIU Tao, ZHANG Mingxin, SHI Fengshuo, HU Jiapeng, YANG Weisen. Fabrication of CeO₂ Micro-Nanofibers by Electrospinning and Its Fluoride Removal Performance[J]. JOURNAL OF SYNTHETIC CRYSTALS, 2022, 51(2): 316-323.

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Fabrication of CeO₂ Micro-Nanofibers by Electrospinning and Its Fluoride Removal Performance

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