Selective and efficient removal of radioactive ions from water with well-dispersed metal oxide nanoparticles@N-doped carbon

doi:10.1016/j.seppur.2021.120366

	Selective and efficient removal of radioactive ions from water with well-dispersed metal oxide nanoparticles@N-doped carbon
	Lv, Zhimin 1; Zhang, Jing 1; Zhang, Yifeng 1; Li, Kexin 2; Ye, Xiushen 2; Fang, Ming 1; Tan, Xiaoli 1,2; Kong, Mingguang 3; Wang, Xiangke 1
刊名	SEPARATION AND PURIFICATION TECHNOLOGY
	2022-03-15
卷号	285
关键词	COF MgO NPs Uranium N-doped carbon Adsorption Ions exchange
ISSN号	1383-5866
DOI	10.1016/j.seppur.2021.120366
通讯作者	Fang, Ming(mfang@ncepu.edu.cn) ; Tan, Xiaoli(xltan@ncepu.edu.cn)
英文摘要	Nuclear pollution in the environment is increasingly serious recently, which directly endangers human health and environmental quality. Herein, this paper proposes a COF-absorption-pyrolysis strategy to confine MgO NPs in COF-derived N-doped porous carbon matrix. The MgO NPs in the obtained materials were evenly anchored on a carbon matrix with a diameter of less than 10 nm confirming by HRTEM analysis. With the characters of porous structure, large specific surface area, and the evenly loading of MgO NPs, MgO@NCt derived from COF shows a significant removal capacity for U(VI), the removal amounts of U(VI) on MgO@NC400 (389.91 mg/g), MgO@NC500 (947.91 mg/g) and MgO@NC600 (880.60 mg/g) at 298 K were remarkably greater than that of NC500 (180.18 mg/g) and other reported carbon-based materials. Moreover, MgO@NC500 still maintains a high selective removal capacity for U(VI) in the existence of Mg2+, Ca2+, Na+, PO43-, SO42- ions. Characteristic analysis shows that the removal process of U(VI) mainly includes ions exchange, the conversion of MgO to Mg (OH)(2), and the complexation between the high-affinity O-H of Mg(OH)(2) and U(VI). The ultra-high removal capacity of the MgO@NCt can be restored by pyrolyzing, and it is further proved to be an efficient adsorbent. In addition, MgO@NC500 has excellent removal capacity for methylene blue and tetracycline. Therefore, the synthesis strategy of confining MgO NPs in the COF-derived N-doped carbon provides a new insight for the treatment of heavy metals and organic pollutants in wastewater.
资助项目	National Natural Science Foundation of China[21876047] ; Thousand Talents Plan of Qinghai province ; National Key Research and Development Program of China[2018YFC1900105] ; Science Challenge Project[TZ2016004] ; Beijing Outstanding Young Scientist Program
WOS关键词	URANIUM REMOVAL ; ADSORPTION ; COMPOSITES ; NANOMATERIALS ; PYROLYSIS ; U(VI) ; MICROSPHERES ; FRAMEWORKS ; REDUCTION ; CAPACITY
WOS研究方向	Engineering
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000777763300001
资助机构	National Natural Science Foundation of China ; Thousand Talents Plan of Qinghai province ; National Key Research and Development Program of China ; Science Challenge Project ; Beijing Outstanding Young Scientist Program
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/128605]
专题	中国科学院合肥物质科学研究院
通讯作者	Fang, Ming; Tan, Xiaoli
作者单位	1.North China Elect Power Univ, Coll Environm Sci & Engn, MOE Key Lab Resources & Environm Syst Optimizat, Beijing 102206, Peoples R China 2.Chinese Acad Sci, Key Lab Salt Lake Resources & Chem, Qinghai Inst Salt Lakes, Xining 810008, Peoples R China 3.Chinese Acad Sci, Key Lab Mat Phys, Inst Solid State Phys, HFIPS, Hefei 230031, Anhui, Peoples R China
推荐引用方式 GB/T 7714	Lv, Zhimin,Zhang, Jing,Zhang, Yifeng,et al. Selective and efficient removal of radioactive ions from water with well-dispersed metal oxide nanoparticles@N-doped carbon[J]. SEPARATION AND PURIFICATION TECHNOLOGY,2022,285.
APA	Lv, Zhimin.,Zhang, Jing.,Zhang, Yifeng.,Li, Kexin.,Ye, Xiushen.,...&Wang, Xiangke.(2022).Selective and efficient removal of radioactive ions from water with well-dispersed metal oxide nanoparticles@N-doped carbon.SEPARATION AND PURIFICATION TECHNOLOGY,285.
MLA	Lv, Zhimin,et al."Selective and efficient removal of radioactive ions from water with well-dispersed metal oxide nanoparticles@N-doped carbon".SEPARATION AND PURIFICATION TECHNOLOGY 285(2022).