静电纺丝法制备CeO2微纳米纤维及其除氟性能

人工晶体学报 ›› 2022, Vol. 51 ›› Issue (2): 316-323.

静电纺丝法制备CeO₂微纳米纤维及其除氟性能

简绍菊^1,2,3, 程意婷¹, 洪慧芳¹, 肖金玉¹, 刘涛¹, 张铭鑫¹, 史丰硕¹, 胡家朋¹, 杨为森^1,2,3

1.武夷学院生态与资源工程学院,武夷山 354300;
2.闽北竹产业公共技术创新服务平台,武夷山 354300;
3.福建省绿色福建省生态产业绿色技术重点实验室(武夷学院),武夷山 354300

收稿日期:2021-10-29 出版日期:2022-02-15 发布日期:2022-03-14
通讯作者: 杨为森,博士,副教授。E-mail:yangweisen@126.com
作者简介:简绍菊(1985—),女,江西省人,博士,副教授。E-mail:jianshaoju@126.com
基金资助:
国家自然科学基金(51406141);福建省自然科学基金(2020J05220,2020J01419);福建省中青年教师教育科研项目(JAT170592,JT180551);福建省大学生创新创业训练(202110397013);福建省生态产业绿色技术重点实验室开放基金(WYKF2019-11)

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

JIAN Shaoju^1,2,3, CHENG Yiting¹, HONG Huifang¹, XIAO Jinyu¹, LIU Tao¹, ZHANG Mingxin¹, SHI Fengshuo¹, HU Jiapeng¹, YANG Weisen^1,2,3

1. School of Ecology and Resources Engineering, Wuyi University, Wuyishan 354300, China;
2. Science and Technology Innovation Public Service Center of Minbei Bamboo Industry, Wuyishan 354300, China;
3. Fujian Key Laboratory of Eco-Industrial Green Technology (Wuyi University), Wuyishan 354300, China

Received:2021-10-29 Online:2022-02-15 Published:2022-03-14

摘要/Abstract

摘要： 以聚丙烯腈(PAN)为载体,六水合硝酸铈[Ce(NO₃)₃·6H₂O]为原料,采用静电纺丝法制备了Ce(NO₃)₃/PAN纤维,在空气中热处理得到CeO₂微纳米纤维,通过XRD、BET和SEM对CeO₂微纳米纤维进行表征。采用静态吸附实验探讨了CeO₂微纳米纤维去除水溶液中氟离子的性能,考察了溶液pH值、初始氟离子浓度及共存阴离子等对吸附性能的影响。结果表明,pH=3时,CeO₂微纳米纤维对F^-的吸附性能最佳,CeO₂吸附量随着F^-浓度的增大呈上升趋势。CeO₂微纳米纤维对F^-的吸附等温线遵循Langmuir模型,二级动力学模型能很好地描述CeO₂微纳米纤维对F^-的吸附过程。CeO₂微纳米纤维的除氟性能优良,可为其实际应用提供理论参考。

关键词: CeO₂, 除氟, 微纳米纤维, 静电纺丝, 热力学, 动力学, 吸附, 吸附等温线

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

中图分类号:

TQ424
X703

简绍菊, 程意婷, 洪慧芳, 肖金玉, 刘涛, 张铭鑫, 史丰硕, 胡家朋, 杨为森. 静电纺丝法制备CeO₂微纳米纤维及其除氟性能[J]. 人工晶体学报, 2022, 51(2): 316-323.

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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静电纺丝法制备CeO₂微纳米纤维及其除氟性能

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

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