Enhancing U(VI) adsorptive removal via amidoximed polyacrylonitrile nanofibers with hierarchical porous structure
Enhancing U(VI) adsorptive removal via amidoximed polyacrylonitrile nanofibers with hierarchical porous structure
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具有分级多孔结构的偕胺肟化聚丙烯腈纳米纤维增强 U(VI) 吸附去除
DOI：
10.1007/s00396-020-04764-8
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发表时间：
2020-10
影响因子：
2.4
通讯作者：
Liu Rui
中科院分区：
文献类型：
--
作者：
Zhang Zhijie;Chu Nini;Shen Yinglin;Li Congling;Liu Rui
在本研究中，通过静电纺丝沸石咪唑酸骨架-8 （ZIF-8）和聚丙烯腈（PAN），然后通过单宁酸（TA）蚀刻和氨基肟化（p-PAN-AO）制备了层次化多孔聚丙烯腈纳米纤维。利用制备的p-PAN-AO去除污水和模拟海水中的放射性U（VI）。考察了铀对p-PAN-AO吸附性能随铀浓度、pH和时间的变化规律。吸附动力学实验表明，拟二级动力学模型比拟一级动力学模型拟合得更好。利用偕胺肟化和层次化多孔结构，该纳米吸附剂在298 K下的U（VI）吸附量高达412.28 mg/g。热力学分析表明，吸附U（VI）具有自发吸热性质。结果表明，所报道的材料在核废水和环境净化方面具有潜在的应用前景。
In this study, hierarchical porous polyacrylonitrile nanofibers were fabricated via electrospinning zeolitic imidazolate framework-8 (ZIF-8) and polyacrylonitrile (PAN), followed by tannic acid (TA) etching and amidoximation (denoted as p-PAN-AO). The as-prepared p-PAN-AO was utilized to remove radioactive U(VI) from sewage water and simulated seawater. The influence of uranium adsorption on p-PAN-AO was investigated as a function of uranium concentration, pH, and time. Adsorption kinetic experiments indicated that the pseudo-second-order kinetic model was fitted better than the pseudo-first-order model. Benefiting from amidoximation and hierarchical porous structure, the nanoadsorbent exhibited a high U(VI) adsorption capacity of 412.28 mg/g at 298 K. The thermodynamic analysis manifested a spontaneous and endothermic nature of U(VI) adsorption. The results demonstrated a potential application of the reported materials in nuclear wastewater and environmental cleanup.
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影响因子：
6
作者：
Jiang Xiao;Shaolei Xie;Y. Jing;Ying Yao;Xingquan Wang;Yongzhong Jia
通讯作者：
Jiang Xiao;Shaolei Xie;Y. Jing;Ying Yao;Xingquan Wang;Yongzhong Jia
层状钛酸盐纳米线的低温合成及其在高效去除U(VI)中的应用
影响因子：
8.9
作者：
Yin Ling;Wang Pengyi;Wen Tao;Yu Shujun;Wang Xiangxue;Hayat Tasawar;Alsaedi Ahmed;Wang Xiangke
通讯作者：
Wang Xiangke
影响因子：
1.6
作者：
Ziwei Zhou;J. Zhao;Yinglin Shen;Rui Liu
通讯作者：
Ziwei Zhou;J. Zhao;Yinglin Shen;Rui Liu
影响因子：
1.8
作者：
M. Hosseini;A. Keshtkar;M. Moosavian
通讯作者：
M. Hosseini;A. Keshtkar;M. Moosavian
DOI：
10.1299/jsmemag.81.714_475
发表时间：
1978
期刊：
Journal of the Society of Mechanical Engineers, Japan
影响因子：
--
作者：
H. Miyazaki
通讯作者：
H. Miyazaki