In situ carbothermal reduction synthesis of Fe nanocrystals embedded into N-doped carbon nanospheres for highly efficient U(VI) adsorption and reduction | |
Zhu, Kairuo3,4; Chen, Changlun1,3,4; Xu, Mingwenchan4; Chen, Ke4; Tan, Xiaoli4; Wakeel, M.2; Alharbi, Njud S.1 | |
刊名 | CHEMICAL ENGINEERING JOURNAL
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2018 | |
卷号 | 331期号:无页码:395-405 |
关键词 | U(VI) Removal Fe nanocrystals Dopamine |
ISSN号 | 1385-8947 |
DOI | 10.1016/j.cej.2017.08.126 |
英文摘要 | 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). |
资助项目 | 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关键词 | ZERO-VALENT IRON ; REDUCED GRAPHENE OXIDES ; ONE-POT SYNTHESIS ; ENHANCED SEQUESTRATION ; ORGANIC FRAMEWORK ; PLASMA TECHNIQUE ; AQUEOUS-SOLUTION ; CHROMIUM REMOVAL ; OXYGEN-REDUCTION ; TRANSITION-METAL |
WOS研究方向 | Engineering |
语种 | 英语 |
出版者 | ELSEVIER SCIENCE SA |
WOS记录号 | WOS:000414155500044 |
内容类型 | 期刊论文 |
源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/36015] ![]() |
专题 | 合肥物质科学研究院_中科院等离子体物理研究所 |
通讯作者 | Chen, Changlun |
作者单位 | 1.King Abdulaziz Univ, Dept Biol Sci, Fac Sci, Jeddah 21589, Saudi Arabia 2.Bahauddin Zakariya Univ, Dept Environm Sci, Multan, Pakistan 3.Soochow Univ, Jiangsu Higher Educ Inst, Collaborat Innovat Ctr Radiat Med, Suzhou 215123, Peoples R China 4.Chinese Acad Sci, Inst Plasma Phys, POB 1126, Hefei 230031, Anhui, Peoples R China |
推荐引用方式 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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