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In situ carbothermal reduction synthesis of Fe nanocrystals embedded into N-doped carbon nanospheres for highly efficient U(VI) adsorption and reduction
Zhu, Kairuo1,2; Chen, Changlun1,2,4; Xu, Mingwenchan1; Chen, Ke1; Tan, Xiaoli1; Wakeel, M.3; Alharbi, Njud S.4
2018
Source PublicationCHEMICAL ENGINEERING JOURNAL
ISSN1385-8947
Volume331Issue:Pages:395-405
Abstract

In this work, magnetic porous nitrogen doped carbon structures containing well-dispersed active Fe nanocrystals (Fe/N-C) are fabricated conveniently via Fe3+-mediated polymerization of dopamine as precursor combined with in situ post carbonization process, thus allowing the entire encapsulation of active Fe nanocrystals in the interior. The obtained functional hybrid materials at 700 degrees C (Fe/N-C-700) show spherical structure, high proportion of metallic Fe nanocrystals, ultrahigh surface area, and easy magnetic separation property, affording excellent U(VI) removal capability (232.54 mg.g(-1)), surpassing the Fe/N-C samples pyrolyzed at different temperatures and nano zero-valent iron. During the adsorption process, effects of water chemistries (i.e., reaction time, pH, carbonates concentration and temperature) on U(VI) adsorption on Fe/N-C-700 are full explored, and the well-dispersed Fe nanocrystals play important role in reducing into U(IV). Meanwhile, nitrogen dopant could make function well in the electrostatic interaction and partial reduction of U(VI). The present study demonstrates that Fe/N-C-700 nanospheres derived from Fe-PDA have potential application for the preconcentration and immobilization of U(VI).

KeywordU(VI) Removal Fe nanocrystals Dopamine
DOI10.1016/j.cej.2017.08.126
WOS KeywordZERO-VALENT IRON ; REDUCED GRAPHENE OXIDES ; ONE-POT SYNTHESIS ; ENHANCED SEQUESTRATION ; ORGANIC FRAMEWORK ; PLASMA TECHNIQUE ; AQUEOUS-SOLUTION ; CHROMIUM REMOVAL ; OXYGEN-REDUCTION ; TRANSITION-METAL
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[U1607102] ; National Natural Science Foundation of China[21377132] ; National Natural Science Foundation of China[21477133] ; Priority Academic Program Development of Jiangsu Higher Education Institutions ; Priority Academic Program Development of Jiangsu Higher Education Institutions ; National Natural Science Foundation of China[21477133] ; National Natural Science Foundation of China[21377132] ; National Natural Science Foundation of China[U1607102]
WOS Research AreaEngineering
WOS SubjectEngineering, Environmental ; Engineering, Chemical
WOS IDWOS:000414155500044
PublisherELSEVIER SCIENCE SA
Citation statistics
Cited Times:61[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.hfcas.ac.cn:8080/handle/334002/36016
Collection中科院等离子体物理研究所
Corresponding AuthorChen, Changlun
Affiliation1.Chinese Acad Sci, Inst Plasma Phys, POB 1126, Hefei 230031, Anhui, Peoples R China
2.Soochow Univ, Jiangsu Higher Educ Inst, Collaborat Innovat Ctr Radiat Med, Suzhou 215123, Peoples R China
3.Bahauddin Zakariya Univ, Dept Environm Sci, Multan, Pakistan
4.King Abdulaziz Univ, Dept Biol Sci, Fac Sci, Jeddah 21589, Saudi Arabia
First Author AffilicationChinese Academy of Sciences, Institute of Plasma Physics, Hefei 230031, Anhui, Peoples R China
Corresponding Author AffilicationChinese Academy of Sciences, Institute of Plasma Physics, Hefei 230031, Anhui, Peoples R China
Recommended Citation
GB/T 7714
Zhu, Kairuo,Chen, Changlun,Xu, Mingwenchan,et al. In situ carbothermal reduction synthesis of Fe nanocrystals embedded into N-doped carbon nanospheres for highly efficient U(VI) adsorption and reduction[J]. CHEMICAL ENGINEERING JOURNAL,2018,331(无):395-405.
APA Zhu, Kairuo.,Chen, Changlun.,Xu, Mingwenchan.,Chen, Ke.,Tan, Xiaoli.,...&Alharbi, Njud S..(2018).In situ carbothermal reduction synthesis of Fe nanocrystals embedded into N-doped carbon nanospheres for highly efficient U(VI) adsorption and reduction.CHEMICAL ENGINEERING JOURNAL,331(无),395-405.
MLA Zhu, Kairuo,et al."In situ carbothermal reduction synthesis of Fe nanocrystals embedded into N-doped carbon nanospheres for highly efficient U(VI) adsorption and reduction".CHEMICAL ENGINEERING JOURNAL 331.无(2018):395-405.
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