New and simple synthetic strategy for two-dimensional ultra-microporous aromatic framework for selective uranium capture in liquid

被引:13
作者
Ahmad, Mudasir [1 ,2 ]
Ren, Jianquan [1 ]
Naik, Mehraj-ud-din [3 ]
Wang, Yabin [1 ]
Khosla, Ajit [4 ]
Zhang, Qiuyu [1 ,2 ]
Zhang, Baoliang [1 ,5 ,6 ]
机构
[1] Northwestern Polytech Univ, Sch Chem & Chem Engn, Xian, Peoples R China
[2] Northwestern Polytech Univ, Xian Key Lab Funct Organ Porous Mat, Xian, Peoples R China
[3] Jazan Univ, Coll Engn, Dept Chem Engn, Jazan, Saudi Arabia
[4] Xidian Univ, Sch Adv Mat & Nanotechnol, Xian, Peoples R China
[5] Sunresins New Mat Co Ltd, Shaanxi Engn & Res Ctr Funct Polymers Adsorpt & Se, Xian, Peoples R China
[6] Northwestern Polytech Univ, Sch Chem & Chem Engn, Youyi Rd 127, Xian 710072, Peoples R China
基金
中国国家自然科学基金;
关键词
clean-energy source; porous aromatic framework; ultra-microporous; uranium; ORGANIC FRAMEWORKS; RECOVERY; EFFICIENT; SEAWATER; EXTRACTION; SORPTION; U(VI); ADSORBENTS; ADSORPTION; SORBENTS;
D O I
10.1002/aic.18143
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
Uranium is a key element to improve nuclear energy demands, and thereby the extraction of uranium from seawater is a strategic way to address uranium sustainability. Herein, a novel two-dimensional porous aromatic framework (AO-PAF), which possesses an ultra-microporous architecture with an ordered structure, excellent stability and selectivity of uranium extraction from a liquid phase. AO-PAF shows excellent uranium adsorption capacities of 637 (mg/g) and 3.22 (mg/g) in simulated and natural seawater attributable to the selective uranium coordinating groups on highly accessible pores on the walls of open channels. In addition, benefiting from the super-hydrophilicity due to the presence of amidoxime groups attributes high selectivity and ultrafast kinetics with an uptake rate of 0.43 +/- 0.03 (mg/g center dot day) and allowing half-saturation within 1.35 +/- 0.09 days. This strategy demonstrates the potential of PAF not only recovery of uranium and can be extended for other applications by sensible planning of target ligands.
引用
收藏
页数:17
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