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Removal of U(VI) from Aqueous Solution by Amino Functionalized Flake Graphite Prepared by Plasma Treatment
Duan, Shengxia1,2; Wang, Yanan1,2; Liu, Xia1,2; Shao, Dadong1; Hayat, Tawwar3; Alsaedi, Ahmed3; Li, Jiaxing1,4
2017-05-01
Source PublicationACS SUSTAINABLE CHEMISTRY & ENGINEERING
Volume5Issue:5Pages:4073-4085
AbstractFlake graphite (FG) with high uranium(VI) entrapment efficiency was successfully fabricated via a simple and efficient nonthermal plasma treatment method. FG was modified with -NH2 functional groups through nonthermal plasma with different treatment times under vacuum conditions. The modified FG samples were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), Fourier transformed infrared spectroscopy (FT-IR spectra), thermogravimetric analysis (TGA), BET surface area measurements, and zeta potential. FG samples with different treatment times are used as contrast adsorbents for U(VI) entrapment. The adsorption experiments show that the modified FG has higher high U(VI) entrapment efficiency than others, and longer treatment time results in higher efficiency, demonstrating that the plasma treatment can greatly increase the active sites of FG samples and lead to the successful grafting of -NH2 on FG surface. The -NH2 modified FG with 2 h treatment time shows the highest adsorption capacity with 140.68 mg.g(-1) among the five samples at 333.15 K. Thermodynamic studies reveal that the U(VI) entrapment process is spontaneous and entropy-driven endothermic. XPS studies reveal that the adsorption mechanism for U(VI) entrapment is achieved through the complexation of U(VI) with both -NH2 and phenolic hydroxyl group on the surface of modified FG. Moreover, desorption studies exhibit that PTFG-4 can be used repeatedly and adsorption capacity only shows slight decrease after five cycles. Thus, it can be concluded that the nonthermal plasma treatment can be used as an effective method for the fabrication of adsorbents with great adsorption performance for heavy metals entrapment.
SubtypeArticle
KeywordFlake Graphite Plasma Treatment Adsorption u(Vi)
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
Funding OrganizationNational Natural Science Foundation of China(21677146 ; National Natural Science Foundation of China(21677146 ; special scientific research fund of public welfare profession of China(201509074) ; special scientific research fund of public welfare profession of China(201509074) ; 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 ; 21272236 ; 21272236 ; U1530131) ; U1530131) ; National Natural Science Foundation of China(21677146 ; National Natural Science Foundation of China(21677146 ; special scientific research fund of public welfare profession of China(201509074) ; special scientific research fund of public welfare profession of China(201509074) ; 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 ; 21272236 ; 21272236 ; U1530131) ; U1530131)
DOI10.1021/acssuschemeng.7b00069
WOS KeywordMULTIWALLED CARBON NANOTUBES ; GRAPHENE OXIDE NANOSHEETS ; EFFICIENT REMOVAL ; SILICA PARTICLES ; ACTIVATED CARBON ; URANIUM VI ; ADSORPTION ; COMPOSITES ; SORPTION ; IONS
Indexed BySCI
Language英语
Funding OrganizationNational Natural Science Foundation of China(21677146 ; National Natural Science Foundation of China(21677146 ; special scientific research fund of public welfare profession of China(201509074) ; special scientific research fund of public welfare profession of China(201509074) ; 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 ; 21272236 ; 21272236 ; U1530131) ; U1530131) ; National Natural Science Foundation of China(21677146 ; National Natural Science Foundation of China(21677146 ; special scientific research fund of public welfare profession of China(201509074) ; special scientific research fund of public welfare profession of China(201509074) ; 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 ; 21272236 ; 21272236 ; U1530131) ; U1530131)
WOS Research AreaChemistry ; Engineering
WOS SubjectChemistry, Multidisciplinary ; Engineering, Chemical
WOS IDWOS:000400634900057
Citation statistics
Cited Times:48[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.hfcas.ac.cn:8080/handle/334002/33487
Collection中科院等离子体物理研究所
Affiliation1.Chinese Acad Sci, Inst Plasma Phys, Key Lab Novel Thin Film Solar Cells, POB 1126, Hefei 230031, Peoples R China
2.Univ Sci & Technol China, Hefei 230026, Peoples R China
3.King Abdulaziz Univ, Fac Sci, Jeddah 21589, Saudi Arabia
4.Jiangsu Higher Educ Inst, Collaborat Innovat Ctr Radiat Med, Suzhou, Peoples R China
Recommended Citation
GB/T 7714
Duan, Shengxia,Wang, Yanan,Liu, Xia,et al. Removal of U(VI) from Aqueous Solution by Amino Functionalized Flake Graphite Prepared by Plasma Treatment[J]. ACS SUSTAINABLE CHEMISTRY & ENGINEERING,2017,5(5):4073-4085.
APA Duan, Shengxia.,Wang, Yanan.,Liu, Xia.,Shao, Dadong.,Hayat, Tawwar.,...&Li, Jiaxing.(2017).Removal of U(VI) from Aqueous Solution by Amino Functionalized Flake Graphite Prepared by Plasma Treatment.ACS SUSTAINABLE CHEMISTRY & ENGINEERING,5(5),4073-4085.
MLA Duan, Shengxia,et al."Removal of U(VI) from Aqueous Solution by Amino Functionalized Flake Graphite Prepared by Plasma Treatment".ACS SUSTAINABLE CHEMISTRY & ENGINEERING 5.5(2017):4073-4085.
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