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Superior immobilization of U(VI) and Am-243(III) on polyethyleneimine modified lamellar carbon nitride composite from water environment
Wang, Pengyi1; Yin, Ling1; Wang, Jian1; Xu, Chao2; Liang, Yu1; Yao, Wen1; Wang, Xiangxue1; Yu, Shujun1; Chen, Jing2; Sun, Yubing1,3; Wang, Xiangke1,4,5
2017-10-15
发表期刊CHEMICAL ENGINEERING JOURNAL
卷号326页码:863-874
摘要A novel low-cost, effective and environmental-friendly laminated carbon nitride decorated with polydopamine (PDA) and grafted with polyethyleneimine (PEI) brush (l-C3N4/PDA/PEI3) was successfully synthesized and applied as environmental cleaner for removing U(VI) ions from aqueous solutions under various environmental conditions. The adsorption isotherms fitted well by the Langmuir model, suggesting that the removal of U(VI) on l-C3N4/PDA/PEI3 was monolayer coverage. The effects of different PEI contents were also investigated and the results demonstrated that the adsorption capacity of U(VI) on l-C3N4/PDA/PEIx decreased at higher content of PEI. Typically, various cations (Ca2+ and Mg2+) and SO42 could inhibit the adsorption through competitive coordination with U(VI), while CO32 promoted U(VI) sorption owing to the formation of indissolvable complexes. The main driving force between U(VI) and l-C3N4/PDA/PEI3 was surface complexation with various functional groups (C=C, C=O, N-C=C, and C-C or C-H) and electrostatic attraction. According to the analysis of EXAFS spectra, the occurrence of U-C and U-U shell revealed that inner-sphere complexation and surface co-precipitation dominated the adsorption of U(VI) on l-C3N4/PDA/PEI3 at pH 5.0. The composites were also applied to remove Am-243(III), Cu(II) and Pb(II) ions at different pH values, and similar results were also found for these metal ions. Such a facile synthesis method and efficient removal performance suggested that the l-C3N4/PDA/PEI3 materials might be a promising adsorbent for efficient elimination of radionuclides and heavy metal ions in environmental pollution management. (C) 2017 Elsevier B.V. All rights reserved.
文章类型Article
关键词Polyethyleneimine u(Vi) Carbon Nitride Adsorption Exafs
WOS标题词Science & Technology ; Technology
资助者Science Challenge Project(TZ2016004) ; Science Challenge Project(TZ2016004) ; NSFC(91326202 ; NSFC(91326202 ; Fundamental Research Funds for the Central Universities(JB2015001) ; Fundamental Research Funds for the Central Universities(JB2015001) ; National Special Water Programs(2015ZX07203-011 ; National Special Water Programs(2015ZX07203-011 ; Jiangsu Provincial Key Laboratory of Radiation Medicine and Protection ; Jiangsu Provincial Key Laboratory of Radiation Medicine and Protection ; Priority Academic Program Development of Jiangsu Higher Education Institutions ; Priority Academic Program Development of Jiangsu Higher Education Institutions ; 21577032) ; 21577032) ; 2015ZX07204-007) ; 2015ZX07204-007) ; Science Challenge Project(TZ2016004) ; Science Challenge Project(TZ2016004) ; NSFC(91326202 ; NSFC(91326202 ; Fundamental Research Funds for the Central Universities(JB2015001) ; Fundamental Research Funds for the Central Universities(JB2015001) ; National Special Water Programs(2015ZX07203-011 ; National Special Water Programs(2015ZX07203-011 ; Jiangsu Provincial Key Laboratory of Radiation Medicine and Protection ; Jiangsu Provincial Key Laboratory of Radiation Medicine and Protection ; Priority Academic Program Development of Jiangsu Higher Education Institutions ; Priority Academic Program Development of Jiangsu Higher Education Institutions ; 21577032) ; 21577032) ; 2015ZX07204-007) ; 2015ZX07204-007)
DOI10.1016/j.cej.2017.06.034
关键词[WOS]ZERO-VALENT IRON ; GRAPHENE OXIDE NANOSHEETS ; LAYERED DOUBLE HYDROXIDE ; ABSORPTION FINE-STRUCTURE ; COEFFICIENT K-D ; ENHANCED SEQUESTRATION ; AQUEOUS-SOLUTIONS ; THEORETICAL CALCULATIONS ; ADSORPTIVE REMOVAL ; EFFICIENT REMOVAL
收录类别SCI
语种英语
资助者Science Challenge Project(TZ2016004) ; Science Challenge Project(TZ2016004) ; NSFC(91326202 ; NSFC(91326202 ; Fundamental Research Funds for the Central Universities(JB2015001) ; Fundamental Research Funds for the Central Universities(JB2015001) ; National Special Water Programs(2015ZX07203-011 ; National Special Water Programs(2015ZX07203-011 ; Jiangsu Provincial Key Laboratory of Radiation Medicine and Protection ; Jiangsu Provincial Key Laboratory of Radiation Medicine and Protection ; Priority Academic Program Development of Jiangsu Higher Education Institutions ; Priority Academic Program Development of Jiangsu Higher Education Institutions ; 21577032) ; 21577032) ; 2015ZX07204-007) ; 2015ZX07204-007) ; Science Challenge Project(TZ2016004) ; Science Challenge Project(TZ2016004) ; NSFC(91326202 ; NSFC(91326202 ; Fundamental Research Funds for the Central Universities(JB2015001) ; Fundamental Research Funds for the Central Universities(JB2015001) ; National Special Water Programs(2015ZX07203-011 ; National Special Water Programs(2015ZX07203-011 ; Jiangsu Provincial Key Laboratory of Radiation Medicine and Protection ; Jiangsu Provincial Key Laboratory of Radiation Medicine and Protection ; Priority Academic Program Development of Jiangsu Higher Education Institutions ; Priority Academic Program Development of Jiangsu Higher Education Institutions ; 21577032) ; 21577032) ; 2015ZX07204-007) ; 2015ZX07204-007)
WOS研究方向Engineering
WOS类目Engineering, Environmental ; Engineering, Chemical
WOS记录号WOS:000406137200087
引用统计
文献类型期刊论文
条目标识符http://ir.hfcas.ac.cn:8080/handle/334002/33544
专题中科院等离子体物理研究所
作者单位1.North China Elect Power Univ, Coll Environm Sci & Engn, Beijing 102206, Peoples R China
2.Tsinghua Univ, Collaborat Innovat Ctr Adv Nucl Energy Technol, Inst Nucl & New Energy Technol, Beijing 100084, Peoples R China
3.Chinese Acad Sci, Inst Plasma Phys, POB 1126, Hefei 230031, Anhui, Peoples R China
4.Soochow Univ, Collaborat Innovat Ctr Radiat Med, Jiangsu Higher Educ Inst, Suzhou 215123, Peoples R China
5.Soochow Univ, Sch Radiol & Interdisciplinary Sci, Suzhou 215123, Peoples R China
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Wang, Pengyi,Yin, Ling,Wang, Jian,et al. Superior immobilization of U(VI) and Am-243(III) on polyethyleneimine modified lamellar carbon nitride composite from water environment[J]. CHEMICAL ENGINEERING JOURNAL,2017,326:863-874.
APA Wang, Pengyi.,Yin, Ling.,Wang, Jian.,Xu, Chao.,Liang, Yu.,...&Wang, Xiangke.(2017).Superior immobilization of U(VI) and Am-243(III) on polyethyleneimine modified lamellar carbon nitride composite from water environment.CHEMICAL ENGINEERING JOURNAL,326,863-874.
MLA Wang, Pengyi,et al."Superior immobilization of U(VI) and Am-243(III) on polyethyleneimine modified lamellar carbon nitride composite from water environment".CHEMICAL ENGINEERING JOURNAL 326(2017):863-874.
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